Obsidian Mind is an Obsidian vault that stores notes, links, indexes, and other accumulated context so AI coding agents can retain memory across sessions. It is designed for Claude Code and also supports Codex CLI and Gemini CLI through shared hooks, commands, and vault data. Its catalogue add-ons package the vault’s commands, agents, skills, hooks, instructions, settings, plugin, and MCP integration.
Borrowing it
Nothing to install: this file belongs to breferrari/obsidian-mind. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/breferrari/obsidian-mind/main/.claude/agents/review-fact-checker.mdgit clone --depth 1 https://github.com/breferrari/obsidian-mindWrote 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.
[](https://agentmods.dev/agents/breferrari/obsidian-mind/review-fact-checker)<a href="https://agentmods.dev/agents/breferrari/obsidian-mind/review-fact-checker"><img src="https://agentmods.dev/badge/agents/breferrari/obsidian-mind/review-fact-checker/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.
<a href="https://agentmods.dev/agents/breferrari/obsidian-mind/review-fact-checker"><img src="https://agentmods.dev/badge/agents/breferrari/obsidian-mind/review-fact-checker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00027 | $0.00499 |
| Opus 5 | $0.00014 | $0.00249 |
| Sonnet 5 | $0.00005 | $0.00100 |
| Haiku 4.5 | $0.00003 | $0.00050 |
Grade A, and why
review-fact-checker 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 12d 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.
What it actually says
Review Fact-Checker
Takes a review draft file (self-review or peer review) and systematically verifies every factual claim against vault sources.
Input
The user provides a file path to a review draft.
Process
-
Read the draft file completely.
-
Extract every factual claim. A claim is:
- A number (PR count, days, team size, percentage)
- A timeline (dates, sequences, "before X happened")
- An attribution ("she authored", "he initiated", "I led")
- A comparison ("first time", "only", "every", "never")
- A characterization ("self-initiated", "without being asked", "autonomously")
- A day-of-week implication ("weekend", "same day", "overnight")
-
For each claim, search the vault:
perf/evidence/for PR dataperf/<cycle>/for review briefsperf/brag/for quarterly brag notesperf/competencies/for competency criteriawork/for project notesorg/people/for person notesbrain/for operational context
-
Classify each claim:
- Verified: Found in vault with matching source
- Unverified: Not found in vault, but plausible (from brag sheet, conversation)
- Flagged: Contradicts vault evidence, embellished, or could be challenged
- Date check: Any day-of-week claim — verify with
datecommand
-
For flagged claims, suggest a fix.
Output
Return a structured report:
## Verified (X claims)
- [claim] — source: [file]
## Unverified (X claims)
- [claim] — no vault source, from [brag sheet / conversation / inference]
## Flagged (X claims)
- [claim] — issue: [what's wrong] — fix: [suggestion]
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.
- 12d ago First seen · 62 lines · 27 tokens per session scan A a386aada6431
review-fact-checker is an agent published in the GitHub repository breferrari/obsidian-mind (4,631 stars, last pushed 9d ago), licensed MIT. It adds 27 tokens to every session and 499 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 2026-08-30.
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