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agentsop-tool-scoping

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Enhancement overlay for multi-agent / tool-using coder agents. Encodes the per-agent tool- scoping discipline that role-based frameworks (CrewAI, LangChain) document only as a passing best-practice: which agent gets which tool, and why blanket-sharing every tool to every agent is a correctness and blast-radius risk. Activates when an agent system has tools AND there is more than one agent (or one agent holding many tools). Treat a tool as a capability grant; scope by least-privilege. ENHANCE overlay — read alongside [[crewai]], [[agentsop-http-tool-wrapping]], [[agentsop-llm-tool-idempotency]]. Search keywords: which tools per agent, least-privilege agent, agent tool access, tool permissions, limit agent tools, scope tools to roles.overlay_type: enhancement

skills/agentsop-tool-scoping/SKILL.md

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Nov 8, 2026
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# Tool Scoping · Per-Agent Tool Binding (Least-Privilege Discipline)

> Overlay posture: the base frameworks ([[crewai]], LangChain, LangGraph) all
> *define* tools and *bind* them, but treat scoping as a one-line "assign tools
> to the agent that needs them" footnote. This overlay makes the rubric
> first-class. Non-trivial claims cite inline against
> `references/R1-source-evidence.md`.

The lever the base skills under-surface: **tool definition and tool binding are
two separate decisions.** You define a tool *once* (reusable class/function), but
you *bind* it per-agent deliberately. The [[crewai]] SKILL states this in one
clause — "tool 定义可复用；但每个 agent 只绑定其角色匹配的工具"
`[crewai-sop §DC-3]` — and then moves on. Production failures (wrong-tool
selection, an agent running a destructive op outside its role) come from skipping
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