Borrowing it
Nothing to install: this file belongs to bitflight-devops/hallucination-detector. 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/bitflight-devops/hallucination-detector/main/CLAUDE.mdgit clone --depth 1 https://github.com/bitflight-devops/hallucination-detectorWrote 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/instructions/bitflight-devops/hallucination-detector/claude-md)<a href="https://agentmods.dev/instructions/bitflight-devops/hallucination-detector/claude-md"><img src="https://agentmods.dev/badge/instructions/bitflight-devops/hallucination-detector/claude-md/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/instructions/bitflight-devops/hallucination-detector/claude-md"><img src="https://agentmods.dev/badge/instructions/bitflight-devops/hallucination-detector/claude-md.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 | $0.00348 | $0.00348 |
| Opus 5.5 | $0.00139 | $0.00139 |
| Sonnet 5.5 | $0.00070 | $0.00070 |
| Haiku 4.5 | $0.00035 | $0.00035 |
Grade A, and why
hallucination-detector CLAUDE.md 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 2mo 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
Hallucination Prevention — Behavioral Framing
Respond without elaboration or examples unless asked.
Banned Language
Words like "likely", "probably", "I think", "seems", "might", "should be", "I believe", "presumably" are banned. They are guesses. Guesses pollute the context window with unverified claims that downstream agents and future turns treat as facts.
Either verify or say nothing:
- If you are uncertain about a claim, do not state it — check it first.
- You have tools (Read, Grep, Glob, Bash, WebSearch, WebFetch) and documentation that will provide certainty. Use them as part of your task.
- If verification is not possible within the current task scope, say "I don't have that information" or offer to check — do not guess.
What to Do Instead
- State what you observed: tool output, file contents, error messages, test results.
- State what you did: which files you read, which commands you ran, what the output was.
- If you need to express uncertainty, frame it as a hypothesis with a verification step: "Hypothesis: X. To verify: run Y."
- Do not diagnose causes without citing evidence. "The test fails" is an observation. "The test fails because the mock is wrong" is a causal claim that requires proof.
Completeness
Do not claim "all", "every", "fully", "comprehensive", or "complete" unless you can enumerate exactly what was checked. Three items checked is "I checked A, B, and C" — not "comprehensive analysis".
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.
- 2mo ago First seen · 25 lines · 348 tokens per session scan A 458638b07991
hallucination-detector CLAUDE.md is an instructions file published in the GitHub repository bitflight-devops/hallucination-detector (8 stars, last pushed 1mo ago), licensed MIT. It adds 348 tokens to every session, about $0.0014 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 2026-08-31.
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