feat(agent): add provider templates

Assisted-by: Codex

Dockerfile.codex

@@ -0,0 +1,20 @@
+# claude-bottle Codex provider image.
+#
+# Mirrors the default Claude image shape: Node LTS, git/network tooling,
+# non-root node user, and the provider CLI installed globally.
+
+FROM node:22-slim
+
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends git ca-certificates openssh-client socat curl dnsutils \
+  && rm -rf /var/lib/apt/lists/*
+
+RUN npm install -g --no-fund --no-audit @openai/codex@0.134.0 \
+  && npm cache clean --force
+
+USER node
+WORKDIR /home/node
+
+RUN mkdir -p /home/node/.codex
+
+CMD ["codex"]

README.md

@@ -126,10 +126,12 @@ and MCP endpoints resolve without an agent-side change.
    └─────────────────────────────────────────────────────────────────────┘
 ```
 
-- **agent image** — built from the repo `Dockerfile` (`node:22-slim`
-  base) on first run; runs `claude` with the manifest-granted skills,
-  env vars, and `~/.gitconfig` (the latter for the git-gate's
-  `insteadOf` rules when `bottle.git` is set).
+- **agent image** — built from the provider template Dockerfile
+  (`Dockerfile` for Claude, `Dockerfile.codex` for Codex, or
+  `agent_provider.dockerfile`) on first run; runs the selected agent
+  CLI with the manifest-granted skills, env vars, and `~/.gitconfig`
+  (the latter for the git-gate's `insteadOf` rules when `bottle.git`
+  is set).
 - **pipelock image** — per-agent sidecar. Terminates the agent's
   outbound HTTP/HTTPS, enforces the resolved allowlist, runs DLP
   scanning. Design in `docs/prds/0001-per-agent-egress-proxy-via-pipelock.md`
@@ -261,8 +263,8 @@ child's declared fields overlay. Merge rules:
 - `git.remotes:` — dict merge by host, child wins on host collision.
   An explicit `git.remotes: {}` clears the parent's remotes; omitting
   `git.remotes` inherits the parent's remotes.
-- `egress:`, `supervise:` — full replace when the child declares the
-  field.
+- `agent_provider:`, `egress:`, `supervise:` — full replace when the
+  child declares the field.
 
 ```yaml
 ---
@@ -287,6 +289,10 @@ parents die at parse with a clear pointer. Bottles remain
 env:
   GIT_AUTHOR_NAME: didericis
 
+agent_provider:
+  template: claude       # default; codex is also supported
+  dockerfile: ""         # optional custom agent Dockerfile
+
 git:
   user:
     name: "Eric Bauerfeld"
@@ -298,56 +304,33 @@ git:
       IdentityFile: /Users/didericis/.ssh/id_ed25519_gitea
       KnownHostKey: ssh-ed25519 AAAA...
 
-# Routes declared here are held by a per-bottle cred-proxy sidecar,
-# not the agent. Each route names a path the agent dials, the
-# upstream the proxy forwards to, an auth_scheme, and a token_ref
-# (host env var). The value goes into the sidecar's environ via
-# `docker create -e`, never touches argv or disk. Optional `role`
-# tags drive agent-side rewrites: anthropic-base-url (sets
-# ANTHROPIC_BASE_URL), npm-registry (writes ~/.npmrc), git-insteadof
-# (writes ~/.gitconfig), tea-login (writes ~/.config/tea/config.yml).
-# See docs/prds/0010-cred-proxy.md.
-cred_proxy:
-  routes:
-    - path: /anthropic/
-      upstream: https://api.anthropic.com
-      auth_scheme: Bearer
-      token_ref: CLAUDE_BOTTLE_OAUTH_TOKEN
-      role: anthropic-base-url
-    - path: /gh-api/
-      upstream: https://api.github.com
-      auth_scheme: Bearer
-      token_ref: GH_PAT
-    - path: /gh-git/
-      upstream: https://github.com
-      auth_scheme: Bearer
-      token_ref: GH_PAT
-      role: git-insteadof
-    - path: /npm/
-      upstream: https://registry.npmjs.org
-      auth_scheme: Bearer
-      token_ref: NPM_TOKEN
-      role: npm-registry
-
-# Egress is forced through a per-agent pipelock sidecar on a Docker
-# `--internal` network — without the proxy the agent has no route
-# off-box. The effective allowlist is the union of baked-in defaults
-# (api.anthropic.com, claude.ai, ...) and the hostnames listed here.
-# Pipelock also runs DLP scanning and detects URL-embedded
-# high-entropy secrets. The resolved allowlist is shown in the y/N
-# preflight before launch.
+# Egress routes are held by a per-bottle sidecar, not the agent.
+# Auth token values go into the sidecar's environ, never into the
+# agent. Provider-specific roles add non-secret placeholder env vars
+# so the selected CLI starts while egress strips/re-injects auth.
 egress:
-  allowlist:
-    - github.com
-    - registry.npmjs.org
-    - pypi.org
+  routes:
+    - host: api.anthropic.com
+      role: claude_code_oauth
+      auth:
+        scheme: Bearer
+        token_ref: CLAUDE_BOTTLE_OAUTH_TOKEN
+    - host: api.github.com
+      auth:
+        scheme: Bearer
+        token_ref: GH_PAT
 ---
 
-The `gitea-dev` bottle. Backs my work on personal projects: Anthropic
-OAuth via cred-proxy, gitea.dideric.is over SSH (with PAT for tea
-API), and npm for publishing scoped packages.
+The `gitea-dev` bottle. Backs my work on personal projects: provider
+auth through egress and gitea.dideric.is over SSH.
 ````
 
+For a Codex-backed bottle, set `agent_provider.template: codex` and
+use the `codex_auth` egress role for the OpenAI API route. The built-in
+Codex template uses `Dockerfile.codex`; set `agent_provider.dockerfile`
+to build the agent from a custom Dockerfile while keeping the
+claude-bottle sidecars in place.
+
 ### Example agent (`~/.claude-bottle/agents/gitea-helper.md`)
 
 ````markdown

claude_bottle/agent_provider.py

@@ -0,0 +1,79 @@
+"""Agent provider runtime mapping.
+
+The manifest owns the user-facing AgentProvider shape. This module is
+the launch-time table that turns a provider template into an executable
+command, default image, and prompt/auth behavior.
+"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from pathlib import Path
+
+
+PROVIDER_CLAUDE = "claude"
+PROVIDER_CODEX = "codex"
+PROVIDER_TEMPLATES = frozenset({PROVIDER_CLAUDE, PROVIDER_CODEX})
+
+
+@dataclass(frozen=True)
+class AgentProviderRuntime:
+    template: str
+    command: str
+    image: str
+    dockerfile: str
+    auth_role: str
+    placeholder_env: str
+    prompt_mode: str
+    bypass_args: tuple[str, ...]
+    resume_args: tuple[str, ...]
+    remote_control_args: tuple[str, ...]
+
+
+_REPO_ROOT = Path(__file__).resolve().parent.parent
+
+
+_RUNTIMES = {
+    PROVIDER_CLAUDE: AgentProviderRuntime(
+        template=PROVIDER_CLAUDE,
+        command="claude",
+        image="claude-bottle:latest",
+        dockerfile="",
+        auth_role="claude_code_oauth",
+        placeholder_env="CLAUDE_CODE_OAUTH_TOKEN",
+        prompt_mode="claude_append_file",
+        bypass_args=("--dangerously-skip-permissions",),
+        resume_args=("--continue",),
+        remote_control_args=("--remote-control",),
+    ),
+    PROVIDER_CODEX: AgentProviderRuntime(
+        template=PROVIDER_CODEX,
+        command="codex",
+        image="claude-bottle-codex:latest",
+        dockerfile=str(_REPO_ROOT / "Dockerfile.codex"),
+        auth_role="codex_auth",
+        placeholder_env="OPENAI_API_KEY",
+        prompt_mode="codex_read_prompt_file",
+        bypass_args=("--dangerously-bypass-approvals-and-sandbox",),
+        resume_args=("resume", "--last"),
+        remote_control_args=(),
+    ),
+}
+
+
+def runtime_for(template: str) -> AgentProviderRuntime:
+    return _RUNTIMES[template]
+
+
+def prompt_args(
+    prompt_mode: str, prompt_path: str | None, *, argv: list[str] | None = None,
+) -> list[str]:
+    if not prompt_path:
+        return []
+    if prompt_mode == "claude_append_file":
+        return ["--append-system-prompt-file", prompt_path]
+    if prompt_mode == "codex_read_prompt_file":
+        if argv and "resume" in argv:
+            return []
+        return [f"Read and follow the instructions in {prompt_path}."]
+    raise ValueError(f"unknown provider prompt mode: {prompt_mode}")

claude_bottle/backend/__init__.py

@@ -215,6 +215,7 @@ class BottleBackend(ABC, Generic[PlanT, CleanupT]):
         bottle = manifest.bottle_for(spec.agent_name)
         self._validate_skills(agent.skills)
         self._validate_git_entries(bottle.git)
+        self._validate_agent_provider_dockerfile(spec)
 
     def _validate_skills(self, skills: Sequence[str]) -> None:
         """Each named skill must be a directory under the host's
@@ -238,6 +239,20 @@ class BottleBackend(ABC, Generic[PlanT, CleanupT]):
             if not os.path.isfile(key):
                 die(f"git upstream key file not found for '{entry.Name}': {key}")
 
+    def _validate_agent_provider_dockerfile(self, spec: BottleSpec) -> None:
+        bottle = spec.manifest.bottle_for(spec.agent_name)
+        dockerfile = bottle.agent_provider.dockerfile
+        if not dockerfile:
+            return
+        path = Path(expand_tilde(dockerfile))
+        if not path.is_absolute():
+            path = Path(spec.user_cwd) / path
+        if not path.is_file():
+            die(
+                f"agent_provider.dockerfile for bottle "
+                f"'{spec.manifest.agents[spec.agent_name].bottle}' not found: {path}"
+            )
+
     @abstractmethod
     def _resolve_plan(self, spec: BottleSpec, *, stage_dir: Path) -> PlanT:
         """Backend-specific plan resolution: image/container names,

claude_bottle/backend/docker/bottle.py

@@ -1,16 +1,11 @@
-"""DockerBottle — concrete Bottle handle yielded by
-DockerBottleBackend.launch.
-
-Holds the container name plus the in-container prompt path so
-exec_claude can transparently add --append-system-prompt-file when a
-prompt was provisioned.
-"""
+"""DockerBottle — concrete Bottle handle yielded by DockerBottleBackend."""
 
 from __future__ import annotations
 
 import subprocess
 from typing import Callable
 
+from ...agent_provider import prompt_args
 from .. import Bottle, ExecResult
 
 
@@ -22,22 +17,32 @@ class DockerBottle(Bottle):
         container: str,
         teardown: Callable[[], None],
         prompt_path_in_container: str | None,
+        *,
+        agent_command: str = "claude",
+        agent_prompt_mode: str = "claude_append_file",
     ):
         self.name = container
         self._teardown = teardown
         self._prompt_path = prompt_path_in_container
+        self._agent_command = agent_command
+        self._agent_prompt_mode = agent_prompt_mode
+        self.agent_command = agent_command
+        self.agent_provider_template = (
+            "codex" if agent_command == "codex" else "claude"
+        )
         self._closed = False
 
     def claude_argv(
         self, argv: list[str], *, tty: bool = True,
     ) -> list[str]:
         full_argv = list(argv)
-        if self._prompt_path:
-            full_argv.extend(["--append-system-prompt-file", self._prompt_path])
+        full_argv.extend(
+            prompt_args(self._agent_prompt_mode, self._prompt_path, argv=full_argv)
+        )
         cmd = ["docker", "exec"]
         if tty:
             cmd.append("-it")
-        cmd.extend([self.name, "claude", *full_argv])
+        cmd.extend([self.name, self._agent_command, *full_argv])
         return cmd
 
     def exec_claude(self, argv: list[str], *, tty: bool = True) -> int:

claude_bottle/backend/docker/bottle_plan.py

@@ -51,6 +51,9 @@ class DockerBottlePlan(BottlePlan):
     # is opt-in via the manifest's bottle.supervise field.
     supervise_plan: SupervisePlan | None
     use_runsc: bool
+    agent_command: str = "claude"
+    agent_prompt_mode: str = "claude_append_file"
+    agent_provider_template: str = "claude"
 
     def print(self, *, remote_control: bool) -> None:
         """Render the y/N preflight summary to stderr — compact form
@@ -73,6 +76,7 @@ class DockerBottlePlan(BottlePlan):
 
         print(file=sys.stderr)
         info(f"agent           : {spec.agent_name}")
+        info(f"provider        : {self.agent_provider_template}")
         print_multi("env             ", env_names)
         print_multi("skills          ", list(agent.skills))
         info(f"bottle          : {agent.bottle}")
@@ -91,4 +95,3 @@ class DockerBottlePlan(BottlePlan):
                 egress_lines.append(f"{r.host}{auth}")
             print_multi("  egress        ", egress_lines)
         print(file=sys.stderr)
-

claude_bottle/backend/docker/launch.py

@@ -207,6 +207,12 @@ def launch(
         # Step 9: yield. exec_claude continues to use `docker exec -it`
         # — the agent runs `sleep infinity` per the renderer's
         # service spec.
-        yield DockerBottle(plan.container_name, teardown, prompt_path)
+        yield DockerBottle(
+            plan.container_name,
+            teardown,
+            prompt_path,
+            agent_command=plan.agent_command,
+            agent_prompt_mode=plan.agent_prompt_mode,
+        )
     finally:
         teardown()

claude_bottle/backend/docker/prepare.py

@@ -14,6 +14,7 @@ import os
 from datetime import datetime, timezone
 from pathlib import Path
 
+from ...agent_provider import runtime_for
 from ...egress import Egress
 from ...env import ResolvedEnv, resolve_env
 from ...git_gate import GitGate
@@ -58,6 +59,8 @@ def resolve_plan(
     manifest = spec.manifest
     agent = manifest.agents[spec.agent_name]
     bottle = manifest.bottle_for(spec.agent_name)
+    provider = bottle.agent_provider
+    provider_runtime = runtime_for(provider.template)
 
     # PRD 0016 follow-up: identity, not bare slug. A fresh `start`
     # mints a random-suffixed identity (so parallel runs of the same
@@ -89,8 +92,14 @@ def resolve_plan(
     if per_bottle_dockerfile(slug) is not None:
         image_default = per_bottle_image_tag(slug)
         dockerfile_path = str(per_bottle_dockerfile_path(slug))
+    elif provider.dockerfile:
+        image_default = f"claude-bottle:{provider.template}-{slug}"
+        dockerfile_path = _resolve_manifest_dockerfile(provider.dockerfile, spec)
+    elif provider_runtime.dockerfile:
+        image_default = provider_runtime.image
+        dockerfile_path = provider_runtime.dockerfile
     else:
-        image_default = "claude-bottle:latest"
+        image_default = provider_runtime.image
     image = os.environ.get("CLAUDE_BOTTLE_IMAGE", image_default)
     derived_image = ""
     runtime_image = image
@@ -171,8 +180,16 @@ def resolve_plan(
         # PRD 0017 chunk 3 moved them behind the
         # `list-egress-routes` MCP tool so the agent gets live
         # state rather than a launch-time snapshot.)
-        dockerfile_path = Path(__file__).resolve().parent.parent.parent.parent / "Dockerfile"
-        dockerfile_content = dockerfile_path.read_text() if dockerfile_path.is_file() else ""
+        supervise_dockerfile_path = (
+            Path(dockerfile_path)
+            if dockerfile_path
+            else Path(__file__).resolve().parent.parent.parent.parent / "Dockerfile"
+        )
+        dockerfile_content = (
+            supervise_dockerfile_path.read_text()
+            if supervise_dockerfile_path.is_file()
+            else ""
+        )
         supervise_dir = supervise_state_dir(slug)
         supervise_dir.mkdir(parents=True, exist_ok=True)
         supervise_plan = supervise.prepare(
@@ -192,12 +209,12 @@ def resolve_plan(
     # placeholder. The placeholder isn't any real token value, so
     # leaking it would tell an attacker only that egress is in
     # front. Manifest validation enforces singleton on this role.
-    has_anthropic_auth = any(
-        "claude_code_oauth" in r.roles
-        for r in egress_plan.routes
+    has_provider_auth = any(
+        provider_runtime.auth_role in r.roles for r in egress_plan.routes
     )
-    if has_anthropic_auth:
-        forwarded_env["CLAUDE_CODE_OAUTH_TOKEN"] = "egress-placeholder"
+    if has_provider_auth:
+        forwarded_env[provider_runtime.placeholder_env] = "egress-placeholder"
+    if provider.template == "claude" and has_provider_auth:
         # Belt-and-braces: turn off telemetry endpoints (statsig,
         # error reporting) that egress can't gate by auth.
         forwarded_env.setdefault("CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC", "1")
@@ -225,6 +242,9 @@ def resolve_plan(
         egress_plan=egress_plan,
         supervise_plan=supervise_plan,
         use_runsc=use_runsc,
+        agent_command=provider_runtime.command,
+        agent_prompt_mode=provider_runtime.prompt_mode,
+        agent_provider_template=provider.template,
     )
 
 
@@ -243,3 +263,10 @@ def _write_env_file(resolved: ResolvedEnv, env_file: Path) -> None:
         env_lines.append(f"{name}={value}")
     env_file.write_text("\n".join(env_lines) + ("\n" if env_lines else ""))
     env_file.chmod(0o600)
+
+
+def _resolve_manifest_dockerfile(path_value: str, spec: BottleSpec) -> str:
+    path = Path(os.path.expanduser(path_value))
+    if not path.is_absolute():
+        path = Path(spec.user_cwd) / path
+    return str(path)

claude_bottle/backend/smolmachines/bottle.py

@@ -21,6 +21,7 @@ import subprocess
 import sys
 from typing import Mapping
 
+from ...agent_provider import prompt_args
 from .. import Bottle, ExecResult
 from . import pty_resize as _pty_resize
 from . import smolvm as _smolvm
@@ -72,6 +73,8 @@ class SmolmachinesBottle(Bottle):
         *,
         prompt_path: str | None = None,
         guest_env: Mapping[str, str] | None = None,
+        agent_command: str = "claude",
+        agent_prompt_mode: str = "claude_append_file",
     ) -> None:
         self.name = machine_name
         # In-VM path to the agent's prompt file. None when the
@@ -83,6 +86,12 @@ class SmolmachinesBottle(Bottle):
         # Forwarded on every `smolvm machine exec` via `-e K=V`
         # because exec doesn't inherit from machine_create's env.
         self._guest_env = dict(guest_env or {})
+        self._agent_command = agent_command
+        self._agent_prompt_mode = agent_prompt_mode
+        self.agent_command = agent_command
+        self.agent_provider_template = (
+            "codex" if agent_command == "codex" else "claude"
+        )
 
     def claude_argv(
         self, argv: list[str], *, tty: bool = True,
@@ -92,10 +101,16 @@ class SmolmachinesBottle(Bottle):
             flags += ["-i", "-t"]
         flags += _env_flags_for("node")
         flags += _guest_env_flags(self._guest_env)
-        claude_tail = ["claude"]
-        if self._prompt_path:
-            claude_tail += ["--append-system-prompt-file", self._prompt_path]
-        claude_tail += argv
+        claude_tail = [self._agent_command]
+        provider_prompt_args = prompt_args(
+            self._agent_prompt_mode, self._prompt_path, argv=argv,
+        )
+        if self._agent_prompt_mode == "codex_read_prompt_file":
+            claude_tail += argv
+            claude_tail += provider_prompt_args
+        else:
+            claude_tail += provider_prompt_args
+            claude_tail += argv
         flags += ["--", "runuser", "-u", "node", "--", *claude_tail]
         if not tty:
             # No PTY allocated — no SIGWINCH to forward, no resize

claude_bottle/backend/smolmachines/bottle_plan.py

@@ -92,6 +92,10 @@ class SmolmachinesBottlePlan(BottlePlan):
     agent_proxy_url: str = ""
     agent_git_gate_host: str = ""
     agent_supervise_url: str = ""
+    agent_command: str = "claude"
+    agent_prompt_mode: str = "claude_append_file"
+    agent_provider_template: str = "claude"
+    agent_dockerfile_path: str = ""
 
     def print(self, *, remote_control: bool) -> None:
         """Compact y/N preflight. Same shape as the Docker
@@ -113,6 +117,7 @@ class SmolmachinesBottlePlan(BottlePlan):
 
         print(file=sys.stderr)
         info(f"agent           : {spec.agent_name}")
+        info(f"provider        : {self.agent_provider_template}")
         print_multi("env             ", env_names)
         print_multi("skills          ", list(agent.skills))
         info(f"bottle          : {agent.bottle}")

claude_bottle/backend/smolmachines/launch.py

@@ -219,7 +219,10 @@ def launch(
         # output doesn't garble the dashboard's preflight modal:
         # both the curses-endwin path and the tmux pane-routing
         # path redirect stderr around `launch` already.
-        agent_from_path = _ensure_smolmachine(plan.agent_image_ref)
+        agent_from_path = _ensure_smolmachine(
+            plan.agent_image_ref,
+            dockerfile=plan.agent_dockerfile_path,
+        )
 
         # smolvm VM. --from carries the pre-packed .smolmachine
         # artifact; --allow-cidr + -e carry the per-bottle TSI
@@ -286,6 +289,8 @@ def launch(
             plan.machine_name,
             prompt_path=prompt_path,
             guest_env=plan.guest_env,
+            agent_command=plan.agent_command,
+            agent_prompt_mode=plan.agent_prompt_mode,
         )
     finally:
         stack.close()
@@ -413,7 +418,7 @@ def _resolve_token_env(
     return egress_resolve_token_values(ep.token_env_map, dict(host_env))
 
 
-def _ensure_smolmachine(image_ref: str) -> Path:
+def _ensure_smolmachine(image_ref: str, *, dockerfile: str = "") -> Path:
     """Build the agent docker image and convert it into a
     `.smolmachine` artifact, caching the result under
     `~/.cache/claude-bottle/smolmachines/` keyed by the docker image
@@ -438,7 +443,7 @@ def _ensure_smolmachine(image_ref: str) -> Path:
     so we skip the whole pipeline when the cached sidecar is
     already on disk for this image ID."""
     _SMOLMACHINE_CACHE_DIR.mkdir(parents=True, exist_ok=True)
-    docker_mod.build_image(image_ref, _REPO_DIR)
+    docker_mod.build_image(image_ref, _REPO_DIR, dockerfile=dockerfile)
     # `sha256:abcd...` -> `abcd...` first 16 chars: short enough to
     # keep filenames manageable, long enough to make collisions
     # astronomically unlikely.

claude_bottle/backend/smolmachines/prepare.py

@@ -14,6 +14,7 @@ import os
 from datetime import datetime, timezone
 from pathlib import Path
 
+from ...agent_provider import runtime_for
 from ...backend import BottleSpec
 from ...backend.docker.bottle_state import (
     BottleMetadata,
@@ -55,6 +56,8 @@ def resolve_plan(
 
     manifest = spec.manifest
     bottle = manifest.bottle_for(spec.agent_name)
+    provider = bottle.agent_provider
+    provider_runtime = runtime_for(provider.template)
 
     slug = spec.identity or bottle_identity(spec.agent_name)
 
@@ -117,8 +120,12 @@ def resolve_plan(
     # the agent gets a non-secret placeholder here (matches the
     # docker backend's forwarded_env logic in
     # claude_bottle/backend/docker/prepare.py).
-    if any("claude_code_oauth" in r.roles for r in egress_plan.routes):
-        guest_env["CLAUDE_CODE_OAUTH_TOKEN"] = "egress-placeholder"
+    has_provider_auth = any(
+        provider_runtime.auth_role in r.roles for r in egress_plan.routes
+    )
+    if has_provider_auth:
+        guest_env[provider_runtime.placeholder_env] = "egress-placeholder"
+    if provider.template == "claude" and has_provider_auth:
         guest_env.setdefault("CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC", "1")
         guest_env.setdefault("DISABLE_ERROR_REPORTING", "1")
 
@@ -145,9 +152,16 @@ def resolve_plan(
     # Stash the agent image ref — `launch.launch` runs the
     # build → pack pipeline at bringup. Honors CLAUDE_BOTTLE_IMAGE
     # to match the docker backend's `resolve_plan` default.
-    agent_image_ref = os.environ.get(
-        "CLAUDE_BOTTLE_IMAGE", "claude-bottle:latest"
-    )
+    agent_dockerfile_path = ""
+    if provider.dockerfile:
+        agent_dockerfile_path = _resolve_manifest_dockerfile(provider.dockerfile, spec)
+        image_default = f"claude-bottle:{provider.template}-{slug}"
+    elif provider_runtime.dockerfile:
+        agent_dockerfile_path = provider_runtime.dockerfile
+        image_default = provider_runtime.image
+    else:
+        image_default = provider_runtime.image
+    agent_image_ref = os.environ.get("CLAUDE_BOTTLE_IMAGE", image_default)
 
     return SmolmachinesBottlePlan(
         spec=spec,
@@ -164,4 +178,15 @@ def resolve_plan(
         git_gate_plan=git_gate_plan,
         egress_plan=egress_plan,
         supervise_plan=supervise_plan,
+        agent_command=provider_runtime.command,
+        agent_prompt_mode=provider_runtime.prompt_mode,
+        agent_provider_template=provider.template,
+        agent_dockerfile_path=agent_dockerfile_path,
     )
+
+
+def _resolve_manifest_dockerfile(path_value: str, spec: BottleSpec) -> str:
+    path = Path(os.path.expanduser(path_value))
+    if not path.is_absolute():
+        path = Path(spec.user_cwd) / path
+    return str(path)

claude_bottle/cli/dashboard.py

@@ -26,6 +26,7 @@ from datetime import datetime, timezone
 from pathlib import Path
 
 from .. import supervise as _supervise
+from ..agent_provider import runtime_for
 from ..backend import (
     ActiveAgent,
     BottleSpec,
@@ -693,7 +694,7 @@ def _stop_bottle_flow(
         return (
             f"[{slug}] not dashboard-owned — use ./cli.py cleanup"
         )
-    cm, _bottle, identity = bottles.pop(slug)
+    cm, bottle, identity = bottles.pop(slug)
 
     def _do_teardown() -> None:
         # Best-effort snapshot before teardown so the operator
@@ -703,7 +704,8 @@ def _stop_bottle_flow(
         # existing preserve marker (if any) is honored by
         # settle_state below.
         try:
-            capture_session_state(identity, exit_code=0)
+            if getattr(bottle, "agent_provider_template", "claude") == "claude":
+                capture_session_state(identity, exit_code=0)
         except BaseException:
             pass
         try:
@@ -761,21 +763,24 @@ def _in_tmux() -> bool:
     return bool(os.environ.get("TMUX"))
 
 
-def _claude_runtime_args(*, resume: bool, remote_control: bool = False) -> list[str]:
+def _claude_runtime_args(
+    *, resume: bool, remote_control: bool = False, provider_template: str = "claude",
+) -> list[str]:
     """The argv the dashboard hands to `bottle.claude_argv`
     on every attach — matches what `attach_claude` builds for the
     foreground handoff so both surfaces produce the same claude
     invocation."""
-    args = ["--dangerously-skip-permissions"]
+    runtime = runtime_for(provider_template)
+    args = list(runtime.bypass_args)
     if remote_control:
-        args.append("--remote-control")
+        args.extend(runtime.remote_control_args)
     if resume:
-        args.append("--continue")
+        args.extend(runtime.resume_args)
     return args
 
 
 def _build_resume_argv_with_fallback(
-    bottle, *, remote_control: bool = False,
+    bottle, *, remote_control: bool = False, provider_template: str = "claude",
 ) -> list[str]:
     """Build a backend-exec argv that runs `claude --continue` and
     falls back to plain `claude` if no prior session exists.
@@ -796,20 +801,34 @@ def _build_resume_argv_with_fallback(
     `smolvm machine exec --name <m> -- runuser -u node --`).
     Splitting at `claude` keeps the framing as the prefix and
     wraps just the claude tail in `sh -c`."""
-    base_args = ["--dangerously-skip-permissions"]
-    if remote_control:
-        base_args.append("--remote-control")
+    if provider_template != "claude":
+        return bottle.claude_argv(
+            _claude_runtime_args(
+                resume=True,
+                remote_control=remote_control,
+                provider_template=provider_template,
+            )
+        )
+    base_args = _claude_runtime_args(
+        resume=False,
+        remote_control=remote_control,
+        provider_template=provider_template,
+    )
     base_exec = bottle.claude_argv(base_args)
     # Split exec-framing prefix from the claude-and-args tail so
     # we can compose `<claude…> --continue || <claude…>` inside
-    # `sh -c`. The `claude` token is the marker.
-    claude_idx = base_exec.index("claude")
+    # `sh -c`. The provider command token is the marker.
+    command = getattr(bottle, "agent_command", runtime_for(provider_template).command)
+    claude_idx = base_exec.index(command)
     prefix = base_exec[:claude_idx]
     claude_cmd = " ".join(shlex.quote(a) for a in base_exec[claude_idx:])
+    resume_args = " ".join(
+        shlex.quote(a) for a in runtime_for(provider_template).resume_args
+    )
     return [
         *prefix,
         "sh", "-c",
-        f"{claude_cmd} --continue || {claude_cmd}",
+        f"{claude_cmd} {resume_args} || {claude_cmd}",
     ]
 
 
@@ -1018,8 +1037,12 @@ def _attach_via_handoff(
     `_attach_in_tmux` when tmux misbehaves)."""
     curses.endwin()
     try:
+        provider_template = getattr(bottle, "agent_provider_template", "claude")
         exit_code = attach_claude(
-            bottle, remote_control=False, resume=resume,
+            bottle,
+            remote_control=False,
+            resume=resume,
+            provider_template=provider_template,
         )
     except BaseException:
         stdscr.refresh()
@@ -1049,14 +1072,21 @@ def _attach_in_tmux(
     auto-attach after a stop) leave it False so the operator
     stays in the dashboard pane."""
     if resume:
+        provider_template = getattr(bottle, "agent_provider_template", "claude")
         # `--continue` exits non-zero when no prior session
         # exists (agent spun up but never typed at). Wrap with a
         # shell-level fallback so the pane lands in a fresh
         # claude instead of crashing.
-        claude_argv = _build_resume_argv_with_fallback(bottle)
+        claude_argv = _build_resume_argv_with_fallback(
+            bottle, provider_template=provider_template,
+        )
     else:
+        provider_template = getattr(bottle, "agent_provider_template", "claude")
         claude_argv = bottle.claude_argv(
-            _claude_runtime_args(resume=False),
+            _claude_runtime_args(
+                resume=False,
+                provider_template=provider_template,
+            ),
         )
     pane_id = _ensure_right_pane(tmux_state, claude_argv)
     if pane_id is None:
@@ -1208,8 +1238,14 @@ def _new_agent_flow(
         # Foreground handoff: claude owns the terminal until exit,
         # then we restore curses.
         try:
-            exit_code = attach_claude(bottle, remote_control=False)
-            capture_session_state(identity, exit_code)
+            provider_template = getattr(plan, "agent_provider_template", "claude")
+            exit_code = attach_claude(
+                bottle,
+                remote_control=False,
+                provider_template=provider_template,
+            )
+            if provider_template == "claude":
+                capture_session_state(identity, exit_code)
         finally:
             stdscr.refresh()
         return f"[{plan.slug}] claude session ended (exit {exit_code})"

claude_bottle/cli/start.py

@@ -18,6 +18,7 @@ import tempfile
 from pathlib import Path
 from typing import Callable
 
+from ..agent_provider import runtime_for
 from ..backend import (
     Bottle,
     BottleSpec,
@@ -114,6 +115,7 @@ def prepare_with_preflight(
 
 def attach_claude(
     bottle: Bottle, *, remote_control: bool = False, resume: bool = False,
+    provider_template: str = "claude",
 ) -> int:
     """Run claude inside `bottle` as an interactive session. Blocks
     until the session ends; returns the claude process's exit code.
@@ -129,17 +131,16 @@ def attach_claude(
     dashboard, which calls it from inside a `curses.endwin → … →
     stdscr.refresh()` handoff so the curses surface gets out of the
     terminal's way while claude has it."""
+    runtime = runtime_for(provider_template)
     info(
-        "attaching interactive claude session "
+        f"attaching interactive {provider_template} session "
         "(Ctrl-D or 'exit' to leave; container will be removed)"
     )
-    claude_args = ["--dangerously-skip-permissions"]
+    claude_args = list(runtime.bypass_args)
     if remote_control:
-        claude_args.append("--remote-control")
+        claude_args.extend(runtime.remote_control_args)
     if resume:
-        # `--continue` jumps straight to the most recent session
-        # without showing the picker `--resume` would surface.
-        claude_args.append("--continue")
+        claude_args.extend(runtime.resume_args)
     return bottle.exec_claude(claude_args, tty=True)
 
 
@@ -217,7 +218,12 @@ def _launch_bottle(
 
         backend = get_bottle_backend(backend_name)
         with backend.launch(plan) as bottle:
-            exit_code = attach_claude(bottle, remote_control=remote_control)
+            provider_template = getattr(plan, "agent_provider_template", "claude")
+            exit_code = attach_claude(
+                bottle,
+                remote_control=remote_control,
+                provider_template=provider_template,
+            )
             info(
                 f"session ended (exit {exit_code}); "
                 f"container {bottle.name} will be removed"
@@ -230,7 +236,8 @@ def _launch_bottle(
             # way. snapshot_transcript is best-effort so the
             # capability-block path's prior snapshot isn't clobbered
             # when the container is already gone.
-            capture_session_state(identity, exit_code)
+            if provider_template == "claude":
+                capture_session_state(identity, exit_code)
         return 0
     finally:
         # PRD 0018 chunk 2: prepare now writes the bottle's bind-mount

claude_bottle/manifest.py

@@ -48,6 +48,7 @@ from dataclasses import dataclass, field
 from pathlib import Path
 from typing import Mapping, cast
 
+from .agent_provider import PROVIDER_TEMPLATES
 from .log import die, warn
 from .yaml_subset import YamlSubsetError, parse_frontmatter
 
@@ -180,6 +181,7 @@ EGRESS_AUTH_SCHEMES = ("Bearer", "token")
 # special happens on the agent side.
 EGRESS_ROLES = frozenset({
     "claude_code_oauth",
+    "codex_auth",
 })
 
 # Singleton roles may appear on at most one route per bottle.
@@ -188,8 +190,55 @@ EGRESS_ROLES = frozenset({
 # ambiguous for any future role-aware logic.
 EGRESS_SINGLETON_ROLES = frozenset({
     "claude_code_oauth",
+    "codex_auth",
 })
 
+PROVIDER_EGRESS_ROLES = {
+    "claude": frozenset({"claude_code_oauth"}),
+    "codex": frozenset({"codex_auth"}),
+}
+
+
+@dataclass(frozen=True)
+class AgentProvider:
+    """Provider/template for the agent process inside a bottle.
+
+    `template` selects a built-in launch/runtime contract. `dockerfile`
+    optionally points at a custom agent-image Dockerfile while leaving
+    claude-bottle's sidecar infrastructure intact.
+    """
+
+    template: str = "claude"
+    dockerfile: str = ""
+
+    @classmethod
+    def from_dict(cls, bottle_name: str, raw: object) -> "AgentProvider":
+        d = _as_json_object(raw, f"bottle '{bottle_name}' agent_provider")
+        for k in d:
+            if k not in {"template", "dockerfile"}:
+                die(
+                    f"bottle '{bottle_name}' agent_provider has unknown key {k!r}; "
+                    f"allowed: template, dockerfile"
+                )
+        template = d.get("template", "claude")
+        if not isinstance(template, str) or not template:
+            die(
+                f"bottle '{bottle_name}' agent_provider.template must be a "
+                f"non-empty string"
+            )
+        if template not in PROVIDER_TEMPLATES:
+            die(
+                f"bottle '{bottle_name}' agent_provider.template {template!r} "
+                f"is not one of {', '.join(sorted(PROVIDER_TEMPLATES))}"
+            )
+        dockerfile = d.get("dockerfile", "")
+        if not isinstance(dockerfile, str):
+            die(
+                f"bottle '{bottle_name}' agent_provider.dockerfile must be a "
+                f"string (was {type(dockerfile).__name__})"
+            )
+        return cls(template=template, dockerfile=dockerfile)
+
 
 @dataclass(frozen=True)
 class GitUser:
@@ -428,7 +477,9 @@ class EgressConfig:
     routes: tuple[EgressRoute, ...] = ()
 
     @classmethod
-    def from_dict(cls, bottle_name: str, raw: object) -> "EgressConfig":
+    def from_dict(
+        cls, bottle_name: str, raw: object, *, provider_template: str = "claude",
+    ) -> "EgressConfig":
         d = _as_json_object(raw, f"bottle '{bottle_name}' egress")
         routes_raw = d.get("routes")
         routes: tuple[EgressRoute, ...] = ()
@@ -443,7 +494,9 @@ class EgressConfig:
                 EgressRoute.from_dict(bottle_name, i, entry)
                 for i, entry in enumerate(routes_list)
             )
-            _validate_egress_routes(bottle_name, routes)
+            _validate_egress_routes(
+                bottle_name, routes, provider_template=provider_template,
+            )
         for k in d:
             if k != "routes":
                 die(
@@ -456,6 +509,7 @@ class EgressConfig:
 @dataclass(frozen=True)
 class Bottle:
     env: Mapping[str, str] = field(default_factory=_empty_str_dict)
+    agent_provider: AgentProvider = field(default_factory=AgentProvider)
     git: tuple[GitEntry, ...] = ()
     # Per-bottle git identity (issue #86). Empty default — bottles
     # that don't set `git.user:` in the manifest skip the
@@ -526,8 +580,17 @@ class Bottle:
         if git_raw is not None:
             git, git_user = _parse_git_config(name, git_raw)
 
+        agent_provider = (
+            AgentProvider.from_dict(name, d["agent_provider"])
+            if "agent_provider" in d
+            else AgentProvider()
+        )
+
         egress = (
-            EgressConfig.from_dict(name, d["egress"])
+            EgressConfig.from_dict(
+                name, d["egress"],
+                provider_template=agent_provider.template,
+            )
             if "egress" in d
             else EgressConfig()
         )
@@ -540,8 +603,8 @@ class Bottle:
             )
 
         return cls(
-            env=env, git=git, git_user=git_user, egress=egress,
-            supervise=supervise_raw,
+            env=env, agent_provider=agent_provider, git=git,
+            git_user=git_user, egress=egress, supervise=supervise_raw,
         )
 
 
@@ -823,6 +886,8 @@ def _parse_git_upstream(url: str, label: str) -> tuple[str, str, str, str]:
 def _validate_egress_routes(
     bottle_name: str,
     routes: tuple[EgressRoute, ...],
+    *,
+    provider_template: str = "claude",
 ) -> None:
     """Cross-validation for `bottle.egress.routes`:
 
@@ -854,6 +919,16 @@ def _validate_egress_routes(
                 f"routes with role {role!r} (hosts: {hosts}); this role drives a "
                 f"single launch-step side effect — pick one."
             )
+    allowed_roles = PROVIDER_EGRESS_ROLES[provider_template]
+    for route in routes:
+        for role in route.Role:
+            if role not in allowed_roles:
+                die(
+                    f"bottle '{bottle_name}' egress route for host "
+                    f"{route.Host!r} has role {role!r}, but provider "
+                    f"{provider_template!r} only accepts roles "
+                    f"{', '.join(sorted(allowed_roles)) or '(none)'}"
+                )
 
 
 def _validate_unique_git_names(bottle_name: str, git: tuple[GitEntry, ...]) -> None:
@@ -881,7 +956,7 @@ _FILENAME_RX = re.compile(r"^[a-z][a-z0-9-]*$")
 # sets dies with a "did you mean" pointer — typos shouldn't silently
 # ghost into an empty config.
 _BOTTLE_KEYS = frozenset(
-    {"env", "extends", "git", "egress", "supervise"}
+    {"env", "extends", "agent_provider", "git", "egress", "supervise"}
 )
 _AGENT_KEYS_REQUIRED = frozenset({"bottle"})
 _AGENT_KEYS_OPTIONAL = frozenset({"skills"})
@@ -1056,12 +1131,22 @@ def _merge_bottles(
     # Presence-driven full-replace for the remaining list-valued +
     # scalar fields.
     merged_egress = child.egress if "egress" in child_raw else parent.egress
+    merged_agent_provider = (
+        child.agent_provider
+        if "agent_provider" in child_raw
+        else parent.agent_provider
+    )
     merged_supervise = (
         child.supervise if "supervise" in child_raw else parent.supervise
     )
+    _validate_egress_routes(
+        name, merged_egress.routes,
+        provider_template=merged_agent_provider.template,
+    )
 
     return Bottle(
         env=merged_env,
+        agent_provider=merged_agent_provider,
         git=merged_git,
         git_user=merged_git_user,
         egress=merged_egress,

docs/prds/0026-agent-provider-templates.md

@@ -6,7 +6,7 @@
 
 ## Summary
 
-Support multiple agent harnesses, starting with Codex and Claude, while keeping agent files provider-agnostic and bottle files responsible for boundaries.
+Support Claude and Codex agent providers while keeping agent files provider-agnostic and bottle files responsible for boundaries.
 
 ## Problem
 
@@ -22,7 +22,7 @@ Today claude-bottle is hard-wired around Claude Code assumptions. When Claude ru
 
 ## Non-goals
 
-- Do not implement support for additional harnesses such as `pi`, `aider`, or other future providers.
+- Do not implement support for providers beyond Claude and Codex.
 - Do not move security boundaries into agent files.
 - Do not allow custom Dockerfiles to remove or bypass required claude-bottle infrastructure.
 - Do not add new runtime dependencies unless the existing Docker/Codex tooling cannot satisfy the minimum cut.
@@ -82,8 +82,8 @@ agent_provider:
 
 ## Open questions
 
-- What is the exact Codex auth role name and environment-variable contract?
-- Which state-folder artifacts are Claude-specific today, and which are provider-neutral?
+- The initial Codex auth role is `codex_auth`; it provides a non-secret `OPENAI_API_KEY` placeholder to the agent while egress holds the real token.
+- Existing state-folder transcript capture is Claude-specific and should remain gated to Claude until the follow-up state/transcript refactor.
 
 ## References
 

tests/unit/test_docker_bottle.py

@@ -22,6 +22,16 @@ def _bottle(prompt_path: str | None = None) -> DockerBottle:
     )
 
 
+def _codex_bottle(prompt_path: str | None = None) -> DockerBottle:
+    return DockerBottle(
+        container="claude-bottle-dev-abc",
+        teardown=lambda: None,
+        prompt_path_in_container=prompt_path,
+        agent_command="codex",
+        agent_prompt_mode="codex_read_prompt_file",
+    )
+
+
 class TestClaudeArgv(unittest.TestCase):
     def test_minimal_argv_no_prompt(self):
         argv = _bottle().claude_argv([])
@@ -79,6 +89,35 @@ class TestClaudeArgv(unittest.TestCase):
         _bottle("/x").claude_argv(original)
         self.assertEqual(["--continue"], original)
 
+    def test_codex_provider_uses_codex_command(self):
+        argv = _codex_bottle().claude_argv(
+            ["--dangerously-bypass-approvals-and-sandbox"],
+        )
+        self.assertEqual(
+            ["docker", "exec", "-it", "claude-bottle-dev-abc", "codex",
+             "--dangerously-bypass-approvals-and-sandbox"],
+            argv,
+        )
+
+    def test_codex_provider_passes_prompt_reference_as_initial_prompt(self):
+        argv = _codex_bottle("/home/node/.claude-bottle-prompt.txt").claude_argv([])
+        self.assertEqual(
+            ["docker", "exec", "-it", "claude-bottle-dev-abc", "codex",
+             "Read and follow the instructions in "
+             "/home/node/.claude-bottle-prompt.txt."],
+            argv,
+        )
+
+    def test_codex_resume_does_not_append_initial_prompt(self):
+        argv = _codex_bottle("/home/node/.claude-bottle-prompt.txt").claude_argv(
+            ["--dangerously-bypass-approvals-and-sandbox", "resume", "--last"],
+        )
+        self.assertEqual(
+            ["docker", "exec", "-it", "claude-bottle-dev-abc", "codex",
+             "--dangerously-bypass-approvals-and-sandbox", "resume", "--last"],
+            argv,
+        )
+
 
 if __name__ == "__main__":
     unittest.main()

tests/unit/test_manifest_egress.py

@@ -18,6 +18,18 @@ def _bottle(routes):
     }).bottles["dev"]
 
 
+def _provider_bottle(provider, routes):
+    return Manifest.from_json_obj({
+        "bottles": {
+            "dev": {
+                "agent_provider": {"template": provider},
+                "egress": {"routes": routes},
+            }
+        },
+        "agents": {"demo": {"skills": [], "prompt": "", "bottle": "dev"}},
+    }).bottles["dev"]
+
+
 class TestMinimalRoute(unittest.TestCase):
     def test_host_only(self):
         b = _bottle([{"host": "api.example.com"}])
@@ -178,6 +190,30 @@ class TestRole(unittest.TestCase):
                  "auth": {"scheme": "Bearer", "token_ref": "T2"}},
             ])
 
+    def test_codex_auth_role_allowed_for_codex_provider(self):
+        b = _provider_bottle("codex", [{
+            "host": "api.openai.com",
+            "role": "codex_auth",
+            "auth": {"scheme": "Bearer", "token_ref": "OPENAI_TOKEN"},
+        }])
+        self.assertEqual(("codex_auth",), b.egress.routes[0].Role)
+
+    def test_claude_role_rejected_for_codex_provider(self):
+        with self.assertRaises(Die):
+            _provider_bottle("codex", [{
+                "host": "api.anthropic.com",
+                "role": "claude_code_oauth",
+                "auth": {"scheme": "Bearer", "token_ref": "T"},
+            }])
+
+    def test_codex_role_rejected_for_default_claude_provider(self):
+        with self.assertRaises(Die):
+            _bottle([{
+                "host": "api.openai.com",
+                "role": "codex_auth",
+                "auth": {"scheme": "Bearer", "token_ref": "T"},
+            }])
+
 
 class TestRouteValidation(unittest.TestCase):
     def test_duplicate_hosts_rejected(self):