tslsp

tslsp-cli

Type-aware TypeScript/JavaScript code intelligence as a CLI. Wraps tsgo (Microsoft's native Go port of tsserver) and exposes its LSP capabilities — references, definition, rename, rename-file, hover, outline, diagnostics, call-hierarchy, code-action — as a small set of agent-friendly commands.

The point is to give coding agents an alternative to grep/find-and-replace/mv on identifier-level work. rename updates every reference. rename-file rewrites every import. outline returns the LSP's structural view, not 200 lines of source.

One tsgo per tsconfig.json, lazy-spawned. Optional --daemon keeps tsgo warm across calls.

install

Two clients are first-class: Claude Code (via the bundled plugin marketplace) and Codex (via the CLI + AGENTS.md).

Claude Code

/plugin marketplace add 0xdeafcafe/tslsp-cli
/plugin install tslsp@0xdeafcafe-tslsp

The plugin bundles a routing skill that tells Claude to use tslsp-cli instead of grep / string-edit / mv for any TS/JS identifier work — no CLAUDE.md editing required. The skill drives the CLI, so install that too:

npm i -g @0xdeafcafe/tslsp-cli

The skill instructs Claude to verify the CLI is on PATH at the start of each session; a missing install surfaces immediately rather than mid-refactor. Update the skill with /plugin marketplace update 0xdeafcafe-tslsp.

Codex

Codex reads AGENTS.md the same way Claude reads CLAUDE.md. Install the CLI and let it write the routing block:

npm i -g @0xdeafcafe/tslsp-cli

tslsp-cli install --skills --project --with-agents-md   # writes ./AGENTS.md
tslsp-cli install --skills --with-agents-md             # writes ~/.codex/AGENTS.md (user-wide)

Idempotent — guarded by a marker comment, so re-runs are no-ops. --with-claude-md is the equivalent flag for non-marketplace Claude Code installs; both flags can be passed together.

Other agents

Cursor, Cline, Aider, anything else that runs a shell and reads an instructions file: install the CLI (npm i -g @0xdeafcafe/tslsp-cli), then paste the body of skills/tslsp/SKILL.md into the host's equivalent file.

From source

git clone https://github.com/0xdeafcafe/tslsp-cli.git
cd tslsp-cli && pnpm install && pnpm run build
./dist/cli.js --help

commands

command	purpose
find-symbol	Workspace symbol search. Multi-query positional or --queries a,b,c. --kind, --container.
references	Every reference. Locator or --symbols batch. --summary for path (N): lines.
definition	Jump to where a symbol is defined. --symbols batch.
type-definition	Jump to a value's type declaration (vs. value). --symbols batch.
implementation	Concrete implementations of an interface/abstract member. --symbols batch.
rename	Type-aware rename across every file. --dry-run previews.
rename-file	Move a file or folder; updates every import. Folders walked recursively.
hover	Type signature + JSDoc. --symbols batch.
outline	Indented declaration outline. Files, globs ('src/**/*.ts'), directories. --depth, --kind.
diagnostics	Type errors. Files, globs, directories. No args → aggregate across every open file.
call-hierarchy	Callers and callees. --direction incoming / outgoing / both.
code-action	List quick-fixes / refactors / organize-imports; --apply N applies one.

tslsp-cli --help and tslsp-cli <command> --help are authoritative.

locator

Commands that need a position accept three forms, in priority order:

--file F --line L --character C   explicit LSP position
--file F --line L --symbol NAME   scan line L of F for NAME
--symbol NAME                     workspace search; exit 2 with candidates if ambiguous

Agents typically know the symbol name and line, not the column. Modes 2 and 3 cover the gap.

batch