Borrowing it
Nothing to install: this file belongs to sequant-io/sequant. 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/sequant-io/sequant/main/CLAUDE.mdgit clone --depth 1 https://github.com/sequant-io/sequantWrote 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/sequant-io/sequant/claude-md)<a href="https://agentmods.dev/instructions/sequant-io/sequant/claude-md"><img src="https://agentmods.dev/badge/instructions/sequant-io/sequant/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/sequant-io/sequant/claude-md"><img src="https://agentmods.dev/badge/instructions/sequant-io/sequant/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 | $0.00881 | $0.00881 |
| Opus 5.5 | $0.00352 | $0.00352 |
| Sonnet 5.5 | $0.00176 | $0.00176 |
| Haiku 4.5 | $0.00088 | $0.00088 |
Grade A, and why
sequant 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 21d 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.
How it starts
The opening of the file, as written. The whole thing — 26 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sequant
Commit Rules
- Do NOT add
Co-Authored-Bylines to any commits in this repository.
Branch protection
mainrejects direct pushes (rulesetCC, #1109: requiredtest+canary, strict up-to-date —GH013; the payload inscripts/ruleset-main.shswaps strict for a merge queue, which applies once #1368 lands — the live ruleset is unchanged until then). Every commit, docs included, lands through a PR;/releaseStep 6 does the same (#1131).
Hooks
HOOK_BLOCKED: Force push— see .claude/skills/_shared/references/force-push.md for the user-handoff pattern. Do not attemptCLAUDE_HOOKS_DISABLED=truebypasses; they don't work.
Skills
- When invoking a sequant skill via
Skill(skill: "<name>", ...)from inside another sequant skill, qualify names that collide with Anthropic top-level skills asSkill(skill: "sequant:<name>", ...). Bare colliding names silently misroute to Anthropic's version. Enforced in CI bynpm run lint:skill-calls(scripts/lint-skill-calls.ts). See #562 / #568.
Testing
- Gate tests ship with a recorded mutation result. A test whose job is to gate a claim — a fixture exists, a skill section is present, a flag is wired — must be mutation-verified before it counts as coverage: delete the thing it asserts, confirm exactly that test fails, restore, and record the result using the
Mutation-verified: AC-N — <mutation>; <test> failed; restored.marker format (machine-anchored as<!-- SEQUANT_MUTATION: {"ac":"AC-N","mutation":"...","failedTest":"<test file path> > <describe> > <case>"} -->) in the PR body —/qa§6i parses and enforces this record for gate-test ACs, and it resolves only the path segment before the first>: a describe-block name or bare test title there classifiestest_not_in_diffand floors the verdict atAC_NOT_MET. Scope file-reading assertions to the delimited region they mean to check; matching the whole file lets a doc header or comment satisfy the assertion. See #830, where deleting the injection fixture's payload left the suite green, and #939, which promoted this record from prose to a parseable gate.
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.
- 21d ago Changed · +48 tokens per session 69e1761e19ed
- 1mo ago Changed · +67 tokens per session 308252ec06a9
- 1mo ago Changed · +4 lines · +63 tokens per session cc9219a433ea
- 1mo ago Changed · +4 lines · +303 tokens per session a23b26b114d6
- 2mo ago First seen · 18 lines · 400 tokens per session scan A 47c02c14db48
sequant CLAUDE.md is an instructions file published in the GitHub repository sequant-io/sequant (1 stars, last pushed today), licensed MIT. It adds 881 tokens to every session, about $0.0035 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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AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.