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Fact gate

Skill chadcorp/warden/skills/research-brain/fact-gate

The run-trust layer for MCP agent skills: content-addressed, Ed25519-signed, scanned, sandboxed, behaviorally trust-scored, transparency-logged. Local-first, zero-dependency. A signal, not a guarantee.From the repository description

Install
npx -y skills add chadcorp/warden --skill fact-gate

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

One thing to look at

  • 0 stars0 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

SKILL.md

2.1 KB, 507 tokens by cl100k_base, as published. Nobody here has run it

Fact Gate

Verify every factual, legal, or financial claim against a dated primary source before anything ships. This is a blocking discipline: a draft does not pass until each checkable claim is signed off.

When to use

Any deliverable that cites laws, official figures, statistics, regulations, rates, or deadlines — or whenever someone asks "is this accurate?" / "check this against sources."

The protocol

  1. Extract the checkable claims. Walk the draft and pull out every assertion a reader could dispute: numbers, dates, rates, thresholds, named rules, jurisdictions. Restate each as a single, testable sentence.

  2. Class each claim. Tag the kind of claim, because each kind has a typical failure mode:

    • Rate / amount — often stale; verify the year it applies to.
    • Threshold / phase-out limit — easy to off-by-one; confirm the exact band.
    • Deadline — confirm the current cycle, not last year's.
    • Jurisdiction / forum — confirm the level (federal vs state, court vs agency); loose phrasing from a single outlet is a classic trap.
  3. Match each claim to a dated primary source. Prefer the authoritative issuer (the statute, the official table, the regulator's own page) over a secondary summary. Record the source and its date next to the claim.

  4. Block on the unverifiable. If a claim cannot be tied to a primary source, it does not ship as fact. Either soften it to attributed opinion ("according to X…"), or cut it. Never assert a number you could not source.

  5. Re-read for the silent claim-classes. Court forum, effective dates, "up to" limits, and percentages are the ones a casual pass skips. Sweep for them explicitly.

Output

A claims ledger: each claim, its class, its dated source, and a status of SIGNED / SOFTENED / CUT. The draft passes only when no claim is left unsigned. If anything is post-dated beyond your knowledge or unsourced, say so plainly rather than guessing.

Honesty rule

"I could not verify this" is a valid, valuable result. A fact gate that waves everything through is not a gate.

What ships with it: 3 files

3.1 KB alongside SKILL.md

tests/

Keep looking

Skills are one crate of 326,149. Ordering is by how many stacks a row turns up in, so the top of any crate is what has actually been picked rather than what has the most stars.