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coder/coderd
Kyle Carberry f4a7fa5b95 fix(chatd): block subagents from spawning workspaces (#22603)
## Summary

Subagent (child) chats were previously given access to workspace
provisioning tools (`list_templates`, `read_template`,
`create_workspace`), which could lead to uncontrolled resource
consumption. This PR moves those tools behind the same
`!chat.ParentChatID.Valid` gate that already protects the subagent tools
(`spawn_agent`, `wait_agent`, etc.).

## Changes

- **`coderd/chatd/chatd.go`**: Moved `list_templates`, `read_template`,
and `create_workspace` tool registration into the root-chat-only block
alongside subagent tools.
- **`coderd/chatd/chatd_test.go`**: Added
`TestSubagentChatExcludesWorkspaceProvisioningTools` — an E2E test that
spawns a subagent via a root chat and verifies the subagent's LLM call
does not include workspace provisioning or subagent tools.
- **`coderd/chatd/chattest/openai.go`**: Added `Tools` field to
`OpenAIRequest` and supporting `OpenAITool`/`OpenAIToolFunction` types
so tests can inspect which tools are sent to the model.
2026-03-04 15:49:14 +00:00
..