Friction, not a security boundary: asks a person before a write adds secrets scan-secrets misses -- high-entropy values (16-150 chars) by secret-like keys, GitHub/npm tokens with valid checksums, Stripe test keys, Slack/AWS key-id shapes, Luhn-valid cards. Asks a person (HP01 entropy is a heuristic, so it asks rather than blocks). Misses: values split across lines, over 150 chars, cut by # or & when unquoted, under other key names, written like code (a.b(), ALL_CAPS, words, URLs, paths), wrap...
Installs into .claude/skills of the current project.
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---
name: scan-secrets-entropy
description: "Friction, not a security boundary: asks a person before a write adds secrets scan-secrets misses -- high-entropy values (16-150 chars) by secret-like keys, GitHub/npm tokens with valid checksums, Stripe test keys, Slack/AWS key-id shapes, Luhn-valid cards. Asks a person (HP01 entropy is a heuristic, so it asks rather than blocks). Misses: values split across lines, over 150 chars, cut by # or & when unquoted, under other key names, written like code (a.b(), ALL_CAPS, words, URLs, paths), wrapped in a call, parens or concatenation, in XML, or padded with control characters."
metadata:
chock.artifact: hook
chock.enforcement: block
chock.coverage_without_chock: advisory
---
# Scan Secrets Entropy
Friction, not a security boundary: asks a person before a write adds secrets scan-secrets misses -- high-entropy values (16-150 chars) by secret-like keys, GitHub/npm tokens with valid checksums, Stripe test keys, Slack/AWS key-id shapes, Luhn-valid cards. Asks a person (HP01 entropy is a heuristic, so it asks rather than blocks). Misses: values split across lines, over 150 chars, cut by # or & when unquoted, under other key names, written like code (a.b(), ALL_CAPS, words, URLs, paths), wrapped in a call, parens or concatenation, in XML, or padded with control characters.
```
on(commit|tool_use): ask(script) script=scan-secrets-entropy-gate.py
Possible secret: a high-entropy value assigned to a secret-like key, a vendor token whose structure checks out, or a card number. Move it to an environment variable or a secret store and reference it; rotate it if it was ever real. A person who has checked a test value keeps it with 'pragma: allowlist secret' on the same line (a person's commit, push or CI honours it; in the agent only a line already in HEAD counts). An agent asks a person; it never writes the pragma.
```
This skill is advisory: the client reading it has no mechanism to enforce it. The same policy compiled by `chock` asks at commit, on an agent's file writes and at turn end. See https://github.com/open-coder-ai/chock
