AgentStack
Sign in Publish
MCP servers Skills Toolkits Why AgentStack Sell Docs
Sign in
SKILL verified MIT Self-run

Host Instruction Drift Checker

skill-45ck-skill-harness-host-instruction-drift-checker · by 45ck

Check whether host instruction surfaces such as AGENTS.md, CLAUDE.md, Codex agents, Cursor rules, Copilot instructions, and SKILL.md files have drifted apart.

↗ Website ↗ Repository
— No reviews yet
0 installs
15 views
0.0% view→install

Install

$ agentstack add skill-45ck-skill-harness-host-instruction-drift-checker

✓ 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.

Are you the author of Host Instruction Drift Checker? Claim this listing to set pricing, connect Stripe payouts, and keep 70% of every sale.
Sign up to claim

About

Host Instruction Drift Checker

Use this skill when a repo supports multiple coding-agent hosts or when a baseline update may change agent behavior.

Process

  • Identify the canonical instruction source for the repo.
  • Inventory host surfaces:
  • AGENTS.md
  • CLAUDE.md
  • AGENT_INSTRUCTIONS.md
  • .claude/agents/*
  • .codex/agents/*
  • .agents/skills/*/SKILL.md
  • .claude/skills/*/SKILL.md
  • .codex/skills/*/SKILL.md
  • .cursor/rules/*.mdc
  • .github/copilot-instructions.md
  • Compare only the behavioral contract: scope, permissions, stop rules, evidence, generated-file ownership, and profile/installer semantics.
  • Treat host-specific syntax as normal, not drift.
  • Classify each mismatch as generated drift, overlay drift, stale doctrine, policy conflict, missing host surface, or intentional host specialization.
  • Prefer updating canonical source and regenerating derived surfaces over hand-editing generated agent files.

Output

Canonical Source

Surfaces Checked

Drift Findings

Intentional Differences

Regeneration Path

Required Manual Review

Avoid

  • forcing every host file to contain identical prose
  • editing generated files as if they were canonical
  • ignoring Cursor .mdc and Copilot surfaces when the repo advertises those hosts
  • treating missing evidence gates as minor wording drift

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.

Reviews

No reviews yet — be the first.

Write a review

Versions

  • v0.1.0 Imported from the upstream source.

More in Agent Skills