Borrowing it
Nothing to install: this file belongs to arpitkath/backstory. 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/arpitkath/backstory/master/CLAUDE.mdgit clone --depth 1 https://github.com/arpitkath/backstoryWrote 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/arpitkath/backstory/claude-md)<a href="https://agentmods.dev/instructions/arpitkath/backstory/claude-md"><img src="https://agentmods.dev/badge/instructions/arpitkath/backstory/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/arpitkath/backstory/claude-md"><img src="https://agentmods.dev/badge/instructions/arpitkath/backstory/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 | $0.00723 | $0.00723 |
| Opus 5.5 | $0.00289 | $0.00289 |
| Sonnet 5.5 | $0.00145 | $0.00145 |
| Haiku 4.5 | $0.00072 | $0.00072 |
Grade A, and why
backstory 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.
How it starts
The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Repository instructions for Claude-based work in this repo.
Project Summary
Backstory is a local-first AI memory layer for Git repositories. It stores
session history as OKF markdown under .backstory/knowledge/ and links that
memory to commits. Capture should come from tool-native hooks, callbacks, or
transcript exporters, not from Git hooks.
Current State
- Session persistence uses OKF markdown, not JSON.
- Pending sessions live at
.backstory/knowledge/sessions/latest.md. - Attached sessions live as stable
.mdfiles in the same directory. backstory diffcan warn about likely contradictions with previous sessions.backstory dumpis the ingestion step used by tool integrations.
Development (source-only)
Run the CLI directly from the source tree — no pip install needed.
# Run the backstory CLI from local source
python -m backstory <command>
# Run tests
PYTHONPATH=src python -m pytest -q
Important Commands
Useful CLI commands (requires installation or python -m backstory):
backstory init
backstory attach HEAD
backstory why HEAD
backstory file <path>
backstory line <path>:<line>
backstory range <path>:<start>-<end>
backstory code <path>:<start>-<end>
backstory diff
backstory status
Publishing (via GitHub Actions)
The package is published to PyPI as backstory-cli via GitHub Actions.
How to publish
- Bump version in
pyproject.toml(semver: bugfix → patch, new feature → minor, breaking → major) - Commit and push the version bump
- Create a GitHub Release from the pushed tag — the
publish.ymlworkflow auto-deploys
Workflow
- Trigger:
on: release: [published] - Uses trusted publishing (OIDC) — no tokens to manage
- Dry-run:
gh workflow run publish.yml -f dry_run=true
Manual publish (fallback)
If CI is down, publish from local:
pip install build twine
python -m build
twine upload dist/backstory_cli-*
Requires a PyPI API token from https://pypi.org/manage/account/token.
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 · 104 lines · 723 tokens per session scan A 8b6b567e3f2c
backstory CLAUDE.md is an instructions file published in the GitHub repository arpitkath/backstory (11 stars, last pushed 3mo ago), licensed MIT. It adds 723 tokens to every session, about $0.0029 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.