Compile LLM-ready context for a change.

Give it changed symbol IDs (e.g. ./src/auth.py:validate_jwt) or a git ref (e.g. HEAD~1), and it returns the callers, callees, and related functions the model needs to make the change safely — packed into max_tokens with a disclosure header showing what was dropped.

Optionally pass task_description (the bug report or issue text) to bias retrieval toward symbols relevant to the described problem — the one signal the graph alone can't provide.

Args: repo_path: Absolute path to the repository. If omitted, uses the --repo from server startup. changed_symbols: List of changed symbol IDs (e.g. ["./src/auth.py:validate_jwt"]). Mutually exclusive with git_ref. git_ref: Git ref to detect changes from (e.g. "HEAD~1"). Mutually exclusive with changed_symbols. When only task_description is given (no changed_symbols or git_ref), defaults to "HEAD". task_description: The bug report or issue text. Biases retrieval toward symbols semantically related to the described problem, not just structurally near the changed symbols. max_tokens: Token budget for the context (default 8000). meta: Disclosure header level: "full" (default), "compact", or "off". The pass@1 effect of meta level is UNMEASURED.

Find what breaks if you change a symbol.

Returns the blast radius: direct callers, direct callees, and transitive impact. The "what breaks if I change this" query.

Args: repo_path: Absolute path to the repository. If omitted, uses the --repo from server startup. symbol: Symbol ID (e.g. ./src/auth.py:validate_jwt).

Explain why symbols were included or dropped from context.

Returns the included symbols (with scores and token costs) and the dropped symbols (scored but cut by the token budget), so an agent can inspect or filter the selection.

Args: repo_path: Absolute path to the repository. If omitted, uses the --repo from server startup. symbol: The changed symbol ID to build context for. max_tokens: Token budget (default 8000).

Mine git history and grade retrieval quality on your repo.

Generates test cases from co-change history, runs DiffContext retrieval against them, and reports hit/recall. Prints NULL RESULT when the tool doesn't fit your repo — finding that out IS the feature.

Args: repo_path: Absolute path to the repository. If omitted, uses the --repo from server startup. n: Maximum number of test cases to generate from git history (default 20).