tool

Tool owns the callable tool contract and registry.

Language: rust

Path: crates/tool

Owns:

• Tool trait
• Registry
• tool specs
• tool lookup
• tool call boundary

Must Not:

• decide per-turn permissions alone
• own agent loop state
• write durable run state

Inputs:

• JSON tool input
• tool call request
• registered tool implementations

Outputs:

• JSON tool output
• tool call result
• tool registry names

Used By:

• agent

Verify:

• cargo check -p tool