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SKILL verified MIT Self-run

Tool Permission Planner

skill-45ck-skill-harness-tool-permission-planner · by 45ck

Design least-privilege tool access for agent workflows, MCP servers, connectors, browser automation, shell commands, and external side effects.

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Install

$ agentstack add skill-45ck-skill-harness-tool-permission-planner

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

Tool Permission Planner

Use this skill when an agent needs tools beyond local read-only reasoning.

Process

  • Start from user task outcomes, not endpoint completeness.
  • List each tool, its side effects, and the data it can expose.
  • Choose read-only or dry-run modes first when they can prove the next step.
  • Define command, path, network, account, and write boundaries.
  • Name approval gates for destructive or externally visible actions.
  • Define audit evidence: logs, issue comments, manifests, screenshots, traces, or command output.

Permission Tiers

  • read: inspect files, issues, docs, metadata, screenshots
  • write-local: edit repo files or generated artifacts
  • execute-local: run tests, builds, formatters, or local validators
  • external-read: call APIs or remote systems without mutation
  • external-write: create, update, publish, deploy, merge, or notify
  • destructive: delete, revoke, reset, drop, overwrite, or irreversibly mutate

Output

Tool Surface

Minimum Required Tier

Boundaries

Approval Gates

Audit Evidence

Denied Capabilities

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

  • Author: 45ck
  • Source: 45ck/skill-harness
  • License: MIT
  • Homepage: https://github.com/45ck/skill-harness/releases/tag/v0.1.0

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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