Oko

Oko

Help your coding agent find code faster and use fewer tokens.

Oko gives Claude Code, Codex, Cursor, OpenCode and Pi a better code search. When you ask your agent about your code, Oko has already found the relevant source, so the agent spends fewer rounds searching and reading files it does not need.

_{Nine coding tasks on Astro, HTTPX and ripgrep, three runs each, with and without Oko. Results · Method}

• Faster: about half the time in Claude Code, OpenCode and Pi; a quarter less in Codex.
• Cheaper: 33–44% fewer tokens with every tool we measured.
• Fewer detours: 65–89% fewer tool calls.
• Better ranking: puts the right file first more often than any published method on Agent Retrieval Bench.
• Local first: search runs on your machine; only the question and selected snippets go to the ranker (privacy).

Quick start

brew install bartlomein/tap/oko
cd your-project
oko setup --client claude     # or codex, cursor, opencode, pi, all

Without Homebrew: curl -fsSL https://raw.githubusercontent.com/bartlomein/oko/main/install.sh | sh.

Then use your coding tool as usual. Setup asks for a TypeSafe AI key the first time, connects your tool to Oko for this project, and checks the connection. Run it once per project; oko upgrade keeps everything current (with Homebrew, run brew upgrade oko first).

Codex: approve Oko's hook once

The first time you open the project, Codex shows Hooks need review. Choose Trust all and continue. If you skipped it, /hooks brings it back.

Cursor: turn Oko on once

Cursor adds a project's tools switched off. Open Customize > MCPs, click oko and turn it on.

Pi: trust the project

Pi 1.0 or later. Trust the project when Pi asks, then check /mcp. Pi setup.

Claude Code, OpenCode: nothing more to do

Start a new session after setup.

Platforms, manual install, no-key mode

macOS (Apple Silicon and Intel) and Linux (ARM64 and x64, glibc 2.35+). The installer puts oko in ~/.local/bin; add it to your PATH if needed. Other install options · Connect a tool by hand · Keys and configuration. For search without a key, add --no-jev: local keyword ranking only.

Results

The same task given to the same coding tool twice, once with its own search and once with Oko, in the same run. Means per session.

Coding tool	Time	Tokens	Tool calls	Tasks passed (without → with)
Claude Code	47% less 12.1 → 6.4 s	44% less 24,271 → 13,627	89% less 3.5 → 0.4	19 → 20 of 20
Codex	26% less 13.8 → 10.2 s	43% less 45,395 → 26,004	80% less 3.0 → 0.6	20 → 20 of 20
OpenCode	47% less 18.0 → 9.6 s	43% less 13,196 → 7,528	87% less 3.7 → 0.5	21 → 21 of 21
Pi	51% less 16.7 → 8.2 s	33% less 9,737 → 6,495	85% less 3.6 → 0.5	20 → 21 of 21
Cursor	6% less 52.3 → 49.2 s	40% less 182,940 → 109,520	65% less 8.0 → 2.8	26 → 24 of 27

_{Models: Claude Sonnet 5.5 (Claude Code), GPT-6.1 Sol (Codex, OpenCode, Pi), Grok 4.7 High (Cursor), at their default or low effort. Cursor's row is from its own run on the previous release; the others are from October 2026. Each tool counts tokens its own way, so compare within a row. Small benchmark; your results will vary. Method, per-task results and caveats · raw data.}

Other benchmarks

Benchmark	What it tests	Oko	Best comparison
Sense's agent benchmark	Six multi-step tasks, Claude Opus 4.7, run against Sense the same evening	Found 88% of the locations to cite, at half the cost	Sense: 63%
Agent Retrieval Bench	345 tasks: find the files a developer needs next	Right file ranked first most often: 0.40, checked by the benchmark's maintainers	Best published method: 0.24
SWE-Explore	848 real issues: rank the code fixing agents needed	One search ranks it within the range of agents that explore for many turns: 0.82	Agents: 0.72–0.95

Where Oko helps less

• Cursor's own search is already fast, so Oko saves less time there: mostly tokens and tool calls.
• Duplicated code can mislead it. When two files hold identical copies of a function, Oko may show the wrong one first; one Astro edit task in our benchmark fails this way.
• Big changes across many files: one search returns five places, so an issue touching many files still needs the agent's own exploring.

Use it from your terminal

oko ask "where is authentication handled?"
oko ask "how are retries handled?" --json
oko stats                     # what ranking has cost you

More in search options.

How it works

Oko searches your project locally (keywords, symbols and file structure), then asks Jev, TypeSafe AI's relevance model, which of the candidates actually answer the question, and returns those excerpts with exact line numbers. oko setup connects it to your tool as an MCP server, adds short guidance to the instructions your tool reads, and installs a hook that answers a code question as you send it. What setup changes · Privacy.

Documentation

I want to…	Guide
Install, upgrade or troubleshoot	Installation
Connect a tool by hand, or understand the MCP tool	Client setup · MCP reference
Configure keys, .env or caching	Configuration
Search from the terminal, or rank my own documents	Search · Document ranking
See every benchmark and how it was run	Benchmark results
Know what leaves my machine	Privacy

Contributing

Bug reports and ideas are welcome: open an issue with your OS and oko --version, without keys or private code. To build and test, see CONTRIBUTING.md.

License

MIT. Dependency attributions are in THIRD_PARTY_NOTICES.md.