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Michael Suchacz
8d4d0b35dd
Exposes the experimental Coder Agents chats API through the MCP tool registry, so MCP clients (the hosted `/api/experimental/mcp/http` server and `coder exp mcp server`) can start and drive server-side coding agents. New tools in `codersdk/toolsdk`, all thin wrappers over existing `codersdk.ExperimentalClient` methods: | Tool | Wraps | |---|---| | `coder_create_chat` | `CreateChat` (prompt, optional org, model config, labels) | | `coder_get_chat` | `GetChat` (status, last error, last turn summary, workspace, files) | | `coder_get_chat_messages` | `GetChatMessages` (user-facing parts, chronological, cursor pagination, queued prompts) | | `coder_send_chat_message` | `CreateChatMessage` (queue or interrupt busy behavior) | | `coder_interrupt_chat` | `InterruptChat` | | `coder_archive_chat` | `UpdateChat` with `archived: true` | | `coder_list_chat_model_configs` | `ListChatModelConfigs` (enabled configs with default flag) | Both MCP servers register tools from `toolsdk.All`, so no additional wiring is needed. Responses are trimmed to what an MCP caller needs (IDs as strings, user-facing transcripts) rather than full SDK payloads. No new endpoints and no database changes. Also adds MCP [prompts](https://modelcontextprotocol.io/specification/2026-07-28/server/prompts) for the chat workflows, defined once in `codersdk/toolsdk` and registered by both servers: | Prompt | Purpose | |---|---| | `coder_agents_delegate` | delegate a task to a Coder Agents chat and monitor it to completion | | `coder_agents_check` | check the status and recent activity of an existing chat | Each prompt declares the tools its workflow needs; the stdio server skips prompts whose tools are excluded by `--allowed-tools`. Tests run the tools against a chat-enabled coderdtest instance (fake OpenAI-compatible provider plus in-process AI bridge), covering the full lifecycle, an interrupt against a blocked turn, pagination cursors, permission-dependent model config filtering, and argument validation. Prompt coverage spans SDK rendering, the hosted `prompts/list`/`prompts/get` round trip, and the stdio server including allowlist gating. > Mux created this PR on Mike's behalf.