cartog: Instructions file for Claude Code

AGENTS.md

cartog AGENTS.md is an instructions file for Claude Code, Codex, OpenCode from jrollin/cartog. It costs 13,989 tokens per session, scanned A, original, MIT.

Project instructions for cartog, a Rust tool that builds a searchable map of source code for AI coding agents.

In plain words
What is it for?
Use them when developing cartog, running its Rust workspace tests, checking formatting and linting, or verifying optional AI-provider builds.
Why use it?
They give an agent the project context, coding rules, build commands, tests, and checks needed to make safe changes.

Instructions file for Claude CodeCodexOpenCode

Written for Claude Code and Codex and OpenCode: SessionEnd hook event, but also the file is AGENTS.md. Also seen: mentions .claude-plugin; mentions CLAUDE.md; mentions Claude Code.

This is jrollin/cartog's own configuration. It tells Claude Code, Codex and OpenCode how to work on cartog itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything cartog configures →

Runs only inside a plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else, and the catalogue could not identify which plugin ships it.

Reuse

Borrowing it

Nothing to install: this file belongs to jrollin/cartog. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/jrollin/cartog/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/jrollin/cartog

Made for: Claude Code, Codex, OpenCode.

Wrote 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.

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README.md
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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.

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Per session 13,989 This file is loaded in full into every session.
When invoked 13,989 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.13989 $0.13989
Opus 5.5 $0.05596 $0.05596
Sonnet 5.5 $0.02798 $0.02798
Haiku 4.5 $0.01399 $0.01399

Measured 3d ago against content hash 64c2a02f9690, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cartog AGENTS.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 3d 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.

AGENTS.md · 330 lines

How it starts

The opening of the file, as written. The whole thing — 330 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Guidelines

Project

cartog — code graph indexer for LLM coding agents. Cargo workspace (11 published crates + cartog-loom-models, a test-only model-checking crate), tree-sitter parsing, SQLite storage.

See docs/product.md for product context, docs/tech.md for architecture decisions, docs/structure.md for module layout, docs/usage.md for CLI commands and MCP/skill setup.

Build & Test

cargo build              # debug build
cargo build --release    # release build
cargo test --workspace   # run all tests (~600 tests across the 11 published crates)
cargo fmt --check        # check formatting
cargo clippy --all-targets -- -D warnings  # lint

Always run cargo fmt --check and cargo clippy --all-targets -- -D warnings before committing.

cargo check --no-default-features -p cartog-rag     # verify builds without ONNX
cargo check --features provider-ollama -p cartog-rag # verify Ollama feature
cargo check --features provider-openai -p cartog-rag # verify OpenAI feature

Integrity checks

make check                 # all checks (Rust project + fixtures + skill + versions)
make check-rust            # cargo fmt + clippy + test
make check-fixtures        # validate all fixture codebases (py, ts, go, rs, rb, java, php, dart, swift, kt)
make check-fixtures-docker # same, forcing the Docker fallback for every language
make check-skill           # skill tests (ensure_indexed.sh unit tests)
make check-versions        # every version anchor release.sh bumps matches Cargo.toml
make check-flaky           # repeat the full suite 4x (N=8 for more) to surface cross-test interference
make eval-skill            # LLM-as-judge skill evaluation (requires claude CLI)
make eval-agents           # LLM-as-judge agent evaluation (requires claude CLI)
make bench                 # shell benchmark suite (13 scenarios x 12 languages)
make bench-resolution      # edge-resolution rate (heuristic + host LSP, all languages; saves a provenance snapshot)
make bench-resolution-docker # same, LSP servers via Docker images (all 16, strict — no host fallback); `make lsp-images` builds them
make bench-resolution-scale # synthetic N-vs-2N repo, asserts index time stays near-linear (quadratic-regression guard, cf. #110)
make bench-memory          # guards `cartog serve` idle footprint (macOS `footprint` / Linux `smaps_rollup`; in CI)
make bench-criterion       # ONNX-free criterion benches (queries, per-language indexing, hybrid search)
make bench-onnx            # real-model embed/rerank benches (needs `cartog rag setup`; not in CI)
make bench-rag             # RAG relevancy benchmarks (in-memory + shell scenario 13)

Read the full file on GitHub · 330 lines

Changes

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.

  1. 3d ago Changed · +5 lines · +201 tokens per session 64c2a02f9690
  2. 4d ago Changed · +2 lines · +215 tokens per session 562ba96895cc
  3. 10d ago Changed · +1 lines · +112 tokens per session 7036baf6e43f
  4. 1mo ago Changed · +156 tokens per session 3d8ab68b63e7
  5. 1mo ago Changed · +50 lines · +3,716 tokens per session f8dc60bc9db8
  6. 1mo ago Changed · +42 tokens per session 9275e557bf2f
  7. 2mo ago First seen · 272 lines · 9,547 tokens per session scan A 1b68392f78d1

Subscribe to this mod's changes

cartog AGENTS.md is an instructions file published in the GitHub repository jrollin/cartog (19 stars, last pushed 3d ago), licensed MIT. It adds 13,989 tokens to every session, about $0.0560 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.

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