cairo-coder: Instructions file for Claude Code

CLAUDE.md

cairo-coder CLAUDE.md is an instructions file for Claude Code from KasarLabs/cairo-coder. It costs 1,514 tokens per session, scanned C, original, MIT.

A project instruction file for Cairo Coder, a service that generates Cairo-language code using retrieved project information. It documents the Python backend, TypeScript/Bun data ingester, database, Docker commands, tests, and code checks.

In plain words
What is it for?
Use it when developing or testing Cairo Coder's Python service, data ingester, PostgreSQL database setup, embeddings workflow, or Docker services.
Why use it?
It gives coding agents the setup and command knowledge needed to work in the project's different parts. This prevents running backend, ingester, or verification commands from the wrong place.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is KasarLabs/cairo-coder's own configuration. It tells Claude Code how to work on cairo-coder 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 cairo-coder configures →

Reuse

Borrowing it

Nothing to install: this file belongs to KasarLabs/cairo-coder. 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/KasarLabs/cairo-coder/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/KasarLabs/cairo-coder

Made for: Claude Code.

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Per session 1,514 This file is loaded in full into every session.
When invoked 1,514 The same file — it is already loaded in full.
Security scan C 2 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 $0.01514 $0.01514
Opus 5.5 $0.00606 $0.00606
Sonnet 5.5 $0.00303 $0.00303
Haiku 4.5 $0.00151 $0.00151

Measured 2mo ago against content hash 5ab95a998f77, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

cairo-coder CLAUDE.md scanned grade C with 2 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -LsSf https://astral.sh/uv/install.sh | sh

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -LsSf https://astral.sh/uv/install.sh | sh
CLAUDE.md · 196 lines

How it starts

The opening of the file, as written. The whole thing — 196 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

Agent instructions for working with Cairo Coder.

Project Overview

Cairo Coder is a Cairo language code generation service using RAG (Retrieval-Augmented Generation) with DSPy.

Stack: Python/FastAPI backend, TypeScript/Bun ingester, PostgreSQL/pgvector database.

Essential Commands

Python Backend (from python/ directory)

# Setup
curl -LsSf https://astral.sh/uv/install.sh | sh
uv sync

# Run server
uv run cairo-coder              # Start FastAPI server
uv run cairo-coder --dev        # Development mode with auto-reload

# Testing
uv run pytest                   # Run all tests
uv run pytest -k "test_name"    # Run specific test
uv run pytest --cov=src/cairo_coder  # With coverage

# Linting & Type Checking
trunk check --fix               # Lint and auto-fix
uv run ty check                 # Type checking

Ingester (from ingesters/ directory)

# Setup
bun install

# Run ingestion
bun run generate-embeddings      # Interactive
bun run generate-embeddings:yes  # Non-interactive (CI/CD)

# Testing
bun test

Docker

# From root directory
docker compose up postgres backend   # Start services
docker compose up postgres ingester  # Run ingestion

Key File Locations

Component Location
RAG Pipeline python/src/cairo_coder/dspy/
Agent Registry python/src/cairo_coder/agents/registry.py
API Server python/src/cairo_coder/server/app.py
Core Types python/src/cairo_coder/core/types.py
Ingesters ingesters/src/ingesters/
Ingester Types ingesters/src/types/index.ts
Optimized Programs python/optimizers/results/

Development Guidelines

Python

  • Use uv for all dependency management (not pip/poetry)
  • Follow DSPy patterns: Signatures -> Modules -> Programs
  • Type hints required (enforced by mypy)
  • Use structlog for logging: get_logger(__name__)
  • Async/await for I/O operations

Read the full file on GitHub · 196 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. 2mo ago First seen · 196 lines · 1,514 tokens per session scan C 5ab95a998f77

Subscribe to this mod's changes

cairo-coder CLAUDE.md is an instructions file published in the GitHub repository KasarLabs/cairo-coder (41 stars, last pushed 3mo ago), licensed MIT. It adds 1,514 tokens to every session, about $0.0061 per session on Opus 5.5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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