Borrowing it
Nothing to install: this file belongs to oddbit/shrtnr. 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/oddbit/shrtnr/main/CLAUDE.mdgit clone --depth 1 https://github.com/oddbit/shrtnrWrote 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/oddbit/shrtnr/claude-md)<a href="https://agentmods.dev/instructions/oddbit/shrtnr/claude-md"><img src="https://agentmods.dev/badge/instructions/oddbit/shrtnr/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/oddbit/shrtnr/claude-md"><img src="https://agentmods.dev/badge/instructions/oddbit/shrtnr/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 | $0.02493 | $0.02493 |
| Opus 5.5 | $0.00997 | $0.00997 |
| Sonnet 5.5 | $0.00499 | $0.00499 |
| Haiku 4.5 | $0.00249 | $0.00249 |
Grade A, and why
shrtnr 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 17d 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 — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Shape: docs/architecture.md, docs/code-architecture.md. Technical rules: docs/code-rules.md.
Styling
- No inline styles for global design. Styles live in centralized files that components and pages import.
Releases
A version bump on main drives each track:
| Target | Manifest | Tag prefix |
|---|---|---|
| Cloudflare Workers app | root package.json |
app-v* |
| TypeScript/npm SDK | sdk/typescript/package.json |
npm-v* |
| Python/PyPI SDK | sdk/python/pyproject.toml |
py-v* |
| Dart/pub.dev SDK | sdk/dart/pubspec.yaml |
pub-v* |
SDK bumps: scripts/bump-sdk-version.sh <npm|python|pub> <version> edits the manifest, adds a placeholder CHANGELOG entry and refreshes lockfiles. Replace TODO: fill in release notes. before committing.
On "update the version", "bump version" or "create a release":
- Bump the manifest per semver. Confirm the track if ambiguous.
- Add a concise section (paragraph or bullets, not a commit log) to the
CHANGELOG.mdnext to the manifest. - App track only: the spec embeds
info.version, so the bump stales all three SDK hashes. Run./scripts/spec-hash.shand update every hash field (see Spec hash) in the same commit, or CI'ssdk-spec-driftfails. - Commit. Do not push.
- Dart only: tag locally, do not push:
git tag pub-v<version>. pub.dev publishes on tag push. CI tags app, npm and Python after publish.
Only the app track creates a GitHub Release (with --latest). SDK and extension workflows tag and publish to their registry; never add gh release create to them.
Details: docs/release-automation.md.
SDKs
- SDK parity. A change to one SDK under
sdk/applies to the others: public methods, models, auth, errors, base-URL handling. A single-SDK change states its reason in the commit message. - README parity. SDK READMEs stay in lockstep (install, usage, auth, feature list), differing only for language idioms. Removing or renaming a documented feature in one means the same edit in the others.
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.
- 17d ago Changed · +2 lines · -145 tokens per session def33cd0f161
- 1mo ago Changed · +21 lines · +533 tokens per session f8cfe9227391
- 1mo ago Changed · +2 lines · +37 tokens per session 0d18f0c9cb74
- 1mo ago Changed · +6 lines · +278 tokens per session 65c65602a7c8
- 2mo ago First seen · 104 lines · 1,790 tokens per session scan A c2863845112b
shrtnr CLAUDE.md is an instructions file published in the GitHub repository oddbit/shrtnr (33 stars, last pushed 3d ago), licensed Apache-2.0. It adds 2,493 tokens to every session, about $0.0100 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 2026-08-30.
shrtnr CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| shrtnr CLAUDE.mdoddbit/shrtnr | Instructions file | 33 | 3d ago | Apache-2.0 | A | 2,493 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |