fact-check-report

fact-check-report is a command for Claude Code from axiomantic/spellbook. It costs 15 tokens per session (424 once invoked), scanned A, original, MIT.

A reporting step that turns fact-checking results into a cited report with findings, evidence, an implementation plan, and reusable glossary entries.

In plain words
What is it for?
Use it to document verified findings, highlight changes that need implementation, and preserve confirmed facts for future sessions.
Why use it?
It makes conclusions traceable to code, tests, documentation, history, or other sources instead of presenting unsupported claims.

Command for Claude Code

Written for Claude Code: a Claude Code command (commands/*.md). Also seen: mentions CLAUDE.md; mentions AGENTS.md; mentions Gemini CLI.

Good fit Use it to document verified findings, highlight changes that need implementation, and preserve confirmed facts for future sessions.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/axiomantic/spellbook/fact-check-report
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.

Clone the repo
git clone --depth 1 https://github.com/axiomantic/spellbook

Made for: Claude Code.

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 fact-check-report

README.md
[![agentmods](https://agentmods.dev/badge/commands/axiomantic/spellbook/fact-check-report/github.svg)](https://agentmods.dev/commands/axiomantic/spellbook/fact-check-report)
Your own site
<a href="https://agentmods.dev/commands/axiomantic/spellbook/fact-check-report"><img src="https://agentmods.dev/badge/commands/axiomantic/spellbook/fact-check-report/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 fact-check-report

Your own site · 80×15
<a href="https://agentmods.dev/commands/axiomantic/spellbook/fact-check-report"><img src="https://agentmods.dev/badge/commands/axiomantic/spellbook/fact-check-report.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 424 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 $0.00015 $0.00424
Opus 5 $0.00008 $0.00212
Sonnet 5 $0.00003 $0.00085
Haiku 4.5 $0.00002 $0.00042

Measured 5d ago against content hash f40e25dabf91, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

fact-check-report 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 5d 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.

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.

commands/fact-check-report.md · 52 lines

What it actually says

Fact-Check: Report and Learning (Phases 6-7)

Invariant Principles

  1. Traceability through bibliography - Every finding must link to its verification evidence with proper citation format
  2. Actionable over comprehensive - Report prioritizes findings that require code changes over informational items
  3. Learning feeds forward - Verified facts and patterns are persisted for future sessions, not discarded after reporting

Phase 6: Report

Sections: Header, Summary, Findings by Category, Bibliography, Implementation Plan

Bibliography Formats:

Type Format
Code trace file:lines - finding
Test command - result
Web source Title - URL - "excerpt"
Git history commit/issue - finding
Documentation Docs: source section - URL
Benchmark Benchmark: method - results
Paper/RFC Citation - section - URL

Phase 6.5: Clarity Mode (if enabled)

Generate glossaries/key facts from verified claims (confidence > 0.7).

Targets: CLAUDE.md, GEMINI.md, AGENTS.md, *_AGENT.md, *_AI.md

Glossary Entry: - **[Term]**: [1-2 sentence definition]. [Usage context.]

Key Fact Categories: Architecture, Behavior, Integration, Error Handling, Performance

Update existing sections or append before --- separators.

Phase 7: Learning

Store trajectories in ReasoningBank:

await reasoningBank.insertPattern({
  type: 'verification-trajectory',
  domain: 'fact-checking-learning',
  pattern: { claimText, claimType, depthUsed, verdict, timeSpent, evidenceQuality }
});

Applications: depth prediction, strategy selection, ordering optimization, false positive reduction.

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. 5d ago First seen · 52 lines · 15 tokens per session scan A f40e25dabf91

Subscribe to this mod's changes

fact-check-report is a command published in the GitHub repository axiomantic/spellbook (10 stars, last pushed yesterday), licensed MIT. It adds 15 tokens to every session and 424 once invoked, about $0.0001 per session on Opus 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 2026-09-03.