Type Atlas

Return TypeScript's source-wide fix-all action as a Codex patch when applicable. The MCP does not modify files.

Return a Codex patch containing document-formatting edits. The MCP does not modify files.

Return type and documentation hover at a position.

Experimental: weigh a change to the symbol at a position — uses in loaded projects, grouped by package, with how many sit in tests. Composed for the decision, not the enumeration; references lists the sites themselves.

Return implementation locations at a position.

Return inline type and parameter hints for a source range.

Return a bounded working view of a symbol: type and documentation, exact definition/body ranges, distinct implementations and types, callers, direct calls, remaining references, project scope, and optional source. Select by exact file-local symbol name or source position.

Retrieve ranked code for an implementation question and attach verified relationships to the exact identifier match or a bounded set of distinct candidates. Structural similarity is optional and remains separate.

Show one bounded workspace-relative file tree rooted at the selected directory, with directories before files. Rows carry `git status` inline with editor-standard letters — `· M +2 -1`, `· R old.ts →`, `· U`, `· 2 changed` on directories — so one call answers structure, reading cost, and working-tree state together; no separate git call is needed to see what changed. Results honor .gitignore, omit dependency and VCS internals, and treat Git submodules as separate workspaces by default.

Inspect the usable module surface visible from an importing TypeScript file. Returns runtime signatures by default, declared package subpaths at package roots, nested runtime paths on request, and exported types or their members as opt-ins.

Find exact identifiers or expressions without knowing their files. Identifier queries resolve semantic references; expression queries match AST structure and receive Volar annotations. Use search_code for meaning-based retrieval.

Return the TypeScript organize-imports action as a Codex patch. The MCP does not modify files.

Return the TypeScript configuration selected for a source file.

Expand the transitive reference closure of a symbol, breadth-first, reporting every site with its source line and the declaration enclosing it, plus the frontier that was not expanded. Use before removing or replacing something, when you need the whole blast radius rather than one hop.

Read one or more UTF-8 text files, including source, Markdown, and JSON, with stable line numbers. Pass every path in one call rather than calling repeatedly. Function bodies fold to their signatures by default; startLine, endLine, and fold apply to every path in the call.

Return a bounded page of reference locations, across every project loaded this session unless scope narrows it. Set raw to return the complete scope instead of one page.

Find structurally similar code for a source line and anchor each match to an exact language-server symbol. Similarity is not a call, reference, or runtime relationship.

Return TypeScript's source-wide unused-code removal as a Codex patch. The MCP does not modify files.

Return a Codex patch that moves files and updates affected references. The MCP does not modify files.

Return a Codex patch for a TypeScript-project symbol rename at a source position. The MCP does not modify files.

Find code by behavior or concept and anchor each match to an exact language-server symbol. The first search of a repository builds its index and takes seconds; later searches answer in milliseconds.

Search installed package code and its matching public runtime API without indexing all of node_modules. Use path for a known namespace or type for instance and chained methods. The importing file selects the exact package versions visible to that project.

Return the nested structural ranges an editor expands through from one or more source positions.

Return overload and parameter information at a call site.

Return type-definition locations at a position.

Search symbols across TypeScript projects activated in this workspace session. Potentially expensive in large monorepos: each call may search many project files, and limit only bounds returned output. Use document_symbols when the file is known; avoid parallel or repeated speculative searches.