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Bounded file patcher

Skill iiwish/skillrun/examples/bounded_file_patcher

Local-first Agent Skill Runtime for packaging SOPs, schemas, preflight checks, run records, and MCP tools as executable skill capsules.

Install
npx -y skills add iiwish/skillrun --skill bounded_file_patcher

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

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SKILL.md

1.2 KB, 278 tokens by cl100k_base, as published. Nobody here has run it

Bounded File Patcher

Purpose

This SkillRun capsule applies one bounded text replacement inside an allowed project directory. It is an example of converting file-write rules into a manifest-bound skill contract, not a claim of OS sandboxing.

SOP

  1. Modify only project-relative files under src/, docs/ or tests/.
  2. Never accept absolute paths, drive-prefixed paths, hidden path segments or parent-directory traversal.
  3. Never modify secret-bearing files, lockfiles or package manager manifests.
  4. Require an exact old_text match before writing new_text.
  5. Reject ambiguous replacements where old_text appears more than once.
  6. Record a markdown patch summary artifact for audit.

Required Context

  • file_path: project-relative path under src/, docs/ or tests/.
  • old_text: exact text to replace.
  • new_text: replacement text.

Recovery Guidance

If this capsule returns PolicyViolation, choose an allowed path or narrower replacement. If it returns ValidationError, provide all required fields.

Prohibited Behavior

  • Do not overwrite entire files without an exact old-text match.
  • Do not modify .env, secrets, lockfiles, package manifests or hidden folders.
  • Do not treat this capsule as an OS sandbox.

What ships with it: 5 files

4.2 KB alongside SKILL.md, 1 of them executable

docs/

examples/

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