feat(codelayer): add per-subagent tool/prompt overrides to coding subagent tool - #48
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…coding subagent tool
Adds a builder-style Agent.withOverrides(overrides) that returns a new
immutable Agent with extra tools merged and system-prompt strings appended.
The parameter is required (callers pass `subagentOverrides[name] ?? {}`), so
the method body narrows cleanly; an empty override returns `this` to avoid a
pointless clone. The core AgentOverrides shape ({ tools?, system? }) is
exported and used directly.
createCodingSubagentTool gains a subagentOverrides map keyed by subagent
name; each subagent builder chains .withOverrides(overrides[name] ?? {})
inline, so callers can grant a specific subagent extra tools + guidance
without replacing the whole subagent tool.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Summary
Adds a generic per-subagent override surface to the CodeLayer coding subagent tool, letting a consumer grant specific named subagents extra tools and system-prompt instructions without forking the whole subagent tool.
What changed
CodingSubagentOverride { additionalTools?: Record<string, Tool>; systemPromptAdditions?: string[] }.subagentOverrides?: Record<string, CodingSubagentOverride>option oncreateCodingSubagentTool/createCodelayerAgent, keyed by subagent name.applyOverride(name, tools, system)helper that merges any extra tools and appends system-prompt additions for the named subagent; all subagent construction sites now route through it.agent.ts(CodelayerAgentOptions.subagentOverrides) and re-exported the new types fromindex.ts.Why
The riptide daemon needs to grant specific research subagents an extra cwd-bound
writetool plus prompt instructions so they persist their findings durably to disk. This override surface makes that possible generically at the library level, rather than baking a research-specific behavior into the shared subagent tool.Test plan
agents/codelayer/test/coding-subagent-tool.test.tscovering:🤖 Generated with Claude Code