ThumbGate: Skill for Claude Code

.claude/skills/evidence-first-answer/SKILL.md

evidence-first-answer is a skill for Claude Code from IgorGanapolsky/ThumbGate. It costs 67 tokens per session (1,089 once invoked), scanned B, original, MIT.

A pre-answer checklist for questions about business results such as revenue, customers, traffic, leads, or conversion. It requires separating measured data from plans and forecasts.

In plain words
What is it for?
It helps verify dates, identify live telemetry, and answer commercial-status questions with evidence.
Why use it?
It reduces the risk of presenting old documents or targets as current business results.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions CLAUDE.md.

This is IgorGanapolsky/ThumbGate's own configuration. It tells Claude Code how to work on ThumbGate itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ThumbGate configures →

Part of the thumbgate plugin — 37 skills, 7 commands, 1 agent, 5 hooks, 2 MCP servers, 2 plugins shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to IgorGanapolsky/ThumbGate. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/IgorGanapolsky/ThumbGate/main/.claude/skills/evidence-first-answer/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/IgorGanapolsky/ThumbGate

Made for: Claude Code.

Or install thumbgate, the plugin that ships this one along with the rest of its 37 skills, 7 commands, 1 agent, 5 hooks, 2 MCP servers, 2 plugins.

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 evidence-first-answer

README.md
[![agentmods](https://agentmods.dev/badge/skills/igorganapolsky/thumbgate/evidence-first-answer/github.svg)](https://agentmods.dev/skills/igorganapolsky/thumbgate/evidence-first-answer)
Your own site
<a href="https://agentmods.dev/skills/igorganapolsky/thumbgate/evidence-first-answer"><img src="https://agentmods.dev/badge/skills/igorganapolsky/thumbgate/evidence-first-answer/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 evidence-first-answer

Your own site · 80×15
<a href="https://agentmods.dev/skills/igorganapolsky/thumbgate/evidence-first-answer"><img src="https://agentmods.dev/badge/skills/igorganapolsky/thumbgate/evidence-first-answer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,089 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 $0.00067 $0.01089
Opus 5 $0.00034 $0.00544
Sonnet 5 $0.00013 $0.00218
Haiku 4.5 $0.00007 $0.00109

Measured 10d ago against content hash a15508b95be3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade B, and why

evidence-first-answer scanned grade B with 2 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 10d ago.

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.

Strips warnings and disclaimersmediumAnti-refusal

Omitting safety caveats hides risk from the user and is a common jailbreak preamble.

1. **Do not restate.** Do not add caveats to the previous answer.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Any number inside `reports/gtm/*` that isn't backed by a same-file `curl` output
.claude/skills/evidence-first-answer/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Evidence-First Answer — The "Are You Sure?" Discipline

When to invoke

  • Any user question that contains: "why didn't", "how come no", "are we", "what's our", "did we", "how much", "revenue", "money", "customers", "conversion", "traffic", "leads", "sales"
  • Any pushback that contains: "are you sure?", "really?", "is that right?", "verify", "prove it"
  • Before writing any phrase that implies traction or its absence

The hard discipline (4 steps, no skipping)

1. Date-check every number you're about to cite

# For any doc you're about to quote:
git log -1 --format='%ai %s' -- <path>
grep -E "^Updated:|^Status:|2026-" <path> | head -5

If the doc's last-updated date is older than 14 days, treat its numbers as historical, not current. Say "as of " explicitly.

2. Distinguish "plan" from "telemetry"

Words/phrases that mean the number is a forecast, not an actual:

  • "30-day revenue plan showed..."
  • "Modeled target..."
  • "Projected..."
  • "If we hit..."
  • Any number inside docs/MONETIZATION_EXEC_SUMMARY_*.md past line 30
  • Any number inside reports/gtm/* that isn't backed by a same-file curl output

Words/phrases that mean the number is measured:

  • "getBillingSummary returned..."
  • "curl /v1/billing/summary JSON..."
  • "Stripe-reconciled charges..."
  • A bash code block with the actual command + output

When in doubt, run revenue-truth skill — query the live endpoint.

3. The "what would change my mind" test

Before submitting an answer, write down: "What single piece of evidence would prove this answer wrong?" Then go look for that evidence. If you find it, rewrite. If you can't find a falsifier, your hypothesis is probably too vague — refine it.

4. State your uncertainty explicitly

End every answer that touches commercial state with:

  • What I verified: (curl outputs, file dates, commit SHAs)
  • What I'm assuming: (and why)
  • What would change the answer: (the specific check the user can run)

Read the full file on GitHub · 94 lines

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. 10d ago First seen · 94 lines · 67 tokens per session scan B a15508b95be3

Subscribe to this mod's changes

evidence-first-answer is a skill published in the GitHub repository IgorGanapolsky/ThumbGate (26 stars, last pushed today), licensed MIT. It adds 67 tokens to every session and 1,089 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 2 findings (strips warnings and disclaimers, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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