claims-gate

claims-gate is a skill for Claude Code, Codex from gooseworks-ai/goose-skills. It costs 124 tokens per session (3,704 once invoked), scanned A, original, MIT.

A review step that checks claims in marketing copy against the claims a brand has approved. It keeps, rewrites, or removes unsupported lines and records what proof or approval is needed.

In plain words
What is it for?
Use it to check claims in ads, emails, posts, web pages, scripts, captions, and creative briefs before publication.
Why use it?
It reduces the risk of publishing statements the brand cannot substantiate or has not approved. It also makes the missing evidence clear instead of silently treating a claim as true.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to check claims in ads, emails, posts, web pages, scripts, captions, and creative briefs before publication.

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Install with agentmods
npx agentmods add skills/gooseworks-ai/goose-skills/claims-gate
About the project

Goose Skills is a library of workflows and data APIs that lets coding agents handle growth and go-to-market work such as advertising, social media, content, SEO, lead generation, and customer research. It is intended for teams using Claude Code, Cursor, Codex, and similar agents. The catalogue entries are its reusable skills.

gooseworks-ai/goose-skills · 1,265 stars · on GitHub · gooseworks.ai

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add gooseworks-ai/goose-skills --skill claims-gate
Clone the repo
git clone --depth 1 https://github.com/gooseworks-ai/goose-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for claims-gate

README.md
[![agentmods](https://agentmods.dev/badge/skills/gooseworks-ai/goose-skills/claims-gate/github.svg)](https://agentmods.dev/skills/gooseworks-ai/goose-skills/claims-gate)
Your own site
<a href="https://agentmods.dev/skills/gooseworks-ai/goose-skills/claims-gate"><img src="https://agentmods.dev/badge/skills/gooseworks-ai/goose-skills/claims-gate/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for claims-gate

Your own site · 80×15
<a href="https://agentmods.dev/skills/gooseworks-ai/goose-skills/claims-gate"><img src="https://agentmods.dev/badge/skills/gooseworks-ai/goose-skills/claims-gate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 124 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,704 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00124 $0.03704
Opus 5.5 $0.00050 $0.01482
Sonnet 5.5 $0.00025 $0.00741
Haiku 4.5 $0.00012 $0.00370

Measured today against content hash 41c0e4bfd1ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claims-gate scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/marketing/claims-gate/SKILL.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

claims-gate

One contract for every playbook that writes copy, scripts, briefs, emails, posts, pages or captions. Only this atom ever writes a claim as approved; claims and markers already in the brand (from the GooseWorks app or an earlier brand pass) are read the same way. The calling playbook keeps its own extract step (on-image text, video scenes, page sections) and hands this atom the spans.

Say it to the human in plain words ("two lines need your OK before I use them"), never as tool, fact or playbook names.

1. Load the contract (once per job)

Which path. Use the older path (steps 1–2: the marker and its Claims you may use — facts) on every server today, including ones that list brand_knowledge_* tools: approvals customers already gave live there, and a chat sign-off recorded by §5 is usable at once. Also count a brain claim a person confirmed (step 5). Where the two disagree, the stricter wins. Steps 3, 4, 6, 7 and 8 always apply. (The brain path, where only brain-confirmed claims count and a chat yes waits for the app, §4.6, applies once the brand's server says chat approvals are recorded only in the app.)

Local mode (no GooseWorks, the marketing-guide skill §5): the contract is gooseworks-local/<brand-slug>/claims.md, read and written by local-claims.md (next to this file) in place of steps 1–3 and 5. Only a row whose newest status is approved and that passes its checks (scope, date, the approver's own words, proof reopened) is usable; declined, pending and retired rows never are. The donts and musts come from brand-notes.md. §2–4 run as written, with local-claims.md for who approves and the record.

  1. gooseworks:brand_read sections: ["learnings"] (lean is enough: it returns every must and dont).
  2. Older path: find the marker: a must fact starting Claims sign-off (learn-my-brand, (a fixed format: the opening names its first writer and stays as it is). Read its status token and match it exactly:
    • signed-off → the claims you may use are the Claims you may use — facts, one claim per fact: verbatim, within the scope written in it, before its review date, with its qualifier.
    • pending-client or not-signed, or no marker → no claim is approved yet beyond plain product facts.
    • approver: tells you who may approve new lines (§4.2).
    • voice: provisional in the marker → label drafts "voice not yet confirmed".
  3. Variants and proof (only when you need a variant or must show proof): gooseworks:file_read the current Brand record — the highest v<N> in a gooseworks:file_list of brand/records/ (the scope in the marketing-guide skill §2). Never use search snippets of it: they can come from its "Not approved" or "Retired" tables.
  4. Never approved claims, whatever the label: kit approvedClaims, proofPoints, valueProps, description; knowledge_search ["claim"] rows; search snippets of any document; the live site (plain descriptions of what the product is and does, in the kit or on the site, still count under 7); press quotes, reviews or testimonials not on the list; a yes in chat that did not go through §4 below.
  5. Brain claims (read alongside the older path). The brain keeps claims with a status (chapter 13, "What we can claim"; older Claims you may use — rules sit in chapter 14 with a status too). A claim is usable only if its status is confirmed and you have opened the full record with gooseworks:brand_knowledge_read and checked it: the exact wording, its scope (product, market, channel), its qualifier, its evidence, and that it hasn't passed its valid_until or recheck_at. Use it verbatim, within scope, with its qualifier. Such a confirmed claim counts even without a marker, but only when a person confirmed it: a claim marked confirmed by research or import, with no person's words in its record, counts as found. A found, guess or waiting claim is not approved, whatever its wording or whoever said it. If a legacy marker also exists and it and the brain disagree about a line (narrower scope, a retired or declined line), the stricter one wins and you say so. Playbooks never read claims from the brain themselves; they consume them only through this atom.
  6. Always apply every dont (never-say, not public, banned words) and every must (policies, qualifiers, terminology).
  7. Plain product facts are always usable: product name, price (only as 8 says), size, listed ingredients or features, how to use, current policies stated in a must fact, and what the product is and does as the brand's own product record, kit or site words it ("Goose makes ads, videos and campaigns inside the agent you already use"). Never benefit, result or outcome wording, numbers, comparisons, customers or regulated words: those need §4. Free-from wording ("no preservatives", "no seed oils") and nutrition numbers are claims too, even when printed on the pack: the pack shows them, the ad's own text needs §4. A brand-voice headline may express a plain product fact's meaning if it adds nothing (no number, result, scope or promise); an approved claim, number or regulated word is used verbatim.
  8. Current offers and prices: the product record's price and offers count as plain facts only when the human confirms in this job that they are live (offers carry their end date). Nothing else about an offer ("best price ever", "limited") is a plain fact.

Read the full file on GitHub · 81 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today Changed 41c0e4bfd1ca
  2. 5d ago First seen · 81 lines · 124 tokens per session scan A 79dbdd726916

Subscribe to this mod's changes

claims-gate is a skill published in the GitHub repository gooseworks-ai/goose-skills (1,265 stars, last pushed today), licensed MIT. It adds 124 tokens to every session and 3,704 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-21.

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