verify-project-tighten-only SKILL.md skillA
verify-project-tighten-only from kenryu42/cc-safety-net is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add kenryu42/cc-safety-net/verify-project-tighten-only@git:20261021.6f70c21Pins git:20261021.6f70c21 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- kenryu42/cc-safety-net
- Path
.agents/skills/verify-project-tighten-only/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261021.6f70c21, committed Oct 21, 2026
- First version recorded
- Oct 21, 2026
- Size
- 8,844 bytes
- Repository stars
- 1,877
- License
- MIT
Use in the cc-safety-net repo before finishing any change to how a project policy merges with the user policy or how a merged policy turns into protections: src/core/policy/merge.ts, safety-level.ts, env.ts (levels, capabilities, sessionSafetyLevel), effective-rules.ts, the merge call and normalizePolicyConfig in store.ts, resolveSecretDisabledRules, rule metadata flags (catastrophic, activationCapability, secret defaultOff), or a new field in GuiPolicy / ProjectPolicyProjection. Runs an…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Verify: a project policy cannot weaken the user policy under tighten-only ## The promise **Property.** With `CC_SAFETY_NET_PROJECT_TIGHTEN_ONLY=1`, every protection the user policy gives on its own is still given after `mergeProjectPolicy` merges in the project policy. **Harm if broken.** A user opts into tighten-only so that a cloned repo cannot relax their guard. If the merge misses one weakening, a repo's project policy file silently turns off a destructive-command rule, a capability such as `fail_closed`, or secret protection for a path, and the agent runs what the user meant to block. ## Run it ```bash bun test tests/core/policy/merge-tighten-only.test.ts ``` It takes about 2 seconds and needs no tool beyond Bun. It also runs in `bun run check` (the pre-push hook and CI), so a break fails the push even if nobody runs it by hand. ## What it checks …
Read the whole file at its exact version.
How to install
mdr add kenryu42/cc-safety-net/verify-project-tighten-only@sha256:fadb303db5b9e4c3The line at the top of this page pins the label git:20261021.6f70c21, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_255qfndddwjsckll)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Oct 21, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261021.6f70c21 latest | 2026-10-21 | 6f70c21 | 8,844 B | A | view · diff |
| git:20261021.c0b6653 | 2026-10-21 | c0b6653 | 8,715 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8844 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
kenryu42/cc-safety-net · 1,877 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_255qfndddwjsckll GET https://markdownregistry.com/api/v1/resolve?ref=kenryu42/cc-safety-net/verify-project-tighten-only GET https://markdownregistry.com/api/v1/blob/fadb303db5b9e4c349bb218062e12f5d2e943b8afa6f7d48339794a9890e79a7
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.