cartomancer 0.3.1

PR review tool with blast radius awareness — Semgrep + cartog + LLM
cartomancer-0.3.1 is not a library.

cartomancer

PR review tool with blast radius awareness — Semgrep + cartog + LLM deepening.

Cartomancer bridges static analysis with code graph intelligence to produce structurally-aware, severity-escalated review comments on GitHub pull requests.

Install

cargo install cartomancer

Requires Semgrep in PATH.

Usage

# Scan a local directory
cartomancer scan .

# Review a GitHub PR (requires GITHUB_TOKEN)
export GITHUB_TOKEN=ghp_...
cartomancer review owner/repo 42

# Dry run — output review JSON without posting
cartomancer review owner/repo 42 --dry-run

# Reuse an existing checkout
cartomancer review owner/repo 42 --work-dir /path/to/repo

How it works

  1. Fetch PR diff from GitHub
  2. Run Semgrep with --baseline-commit (only new findings)
  3. Enrich with cartog blast radius and caller analysis
  4. Escalate severity for findings in auth/payment flows or with large blast radius
  5. Optionally deepen high-severity findings with LLM (Ollama or Anthropic)
  6. Post PR review with inline comments + summary

Configuration

Create .cartomancer.toml in your project root:

[semgrep]
rules = ["auto"]
timeout_seconds = 120

[llm]
provider = "ollama"
ollama_model = "gemma4"

[severity]
blast_radius_threshold = 5
llm_deepening_threshold = "error"

License

MIT