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os-tack

Local-first infrastructure for AI agents. Public projects are AGPL-3.0 or MIT; production binaries are GPG-signed.

ostk.ai · contact@ostk.ai

Install

curl -fsSL https://ostk.ai/install.sh | sh

ostk — the kernel

Repo What it is
ostk.ai Production release mirror. Signed binaries, governance bail, prime key.
ostk-site Source for ostk.ai. Astro.
libostk Userspace client library for the ostk kernel.
homebrew-ostk Homebrew tap. Auto-updated on release.
ostk-recall Local-first hybrid retrieval MCP server — model2vec embeddings + LanceDB + Tantivy BM25 + SQLite. One binary; hybrid search across markdown, code, and Claude Code sessions.
ostk-cache Context-aware caching proxy for Anthropic and OpenAI. Drop-in for Claude Code, Codex, Cursor, and custom harnesses.
osteak Elm-style architecture for ratatui — you bring the loop.

Companion tools

Repo What it is
prism Project a canonical .agents/ directory into every AI coding tool's config (Claude, Cursor, Gemini, Cline, Continue, Windsurf, Copilot, AGENTS.md).
docfresh Track documentation freshness against source code.

Benchmarks

Repo What it is
find-the-needle 23 Docker benchmarks. Submit broken Dockerfiles, watch models fix them. Leaderboard at needle-bench.cc.

File Context Protocol (FCP)

MCP servers that expose verb-based DSLs over complex file formats. Each driver exposes the semantic operations a format supports rather than raw file I/O.

Frameworks

Repo Language
fcp Protocol spec
fcp-core TypeScript + Python shared framework
fcp-core-rust Rust shared framework

Drivers

Repo Format
fcp-pdf PDF — read, annotate, redact, merge, split
fcp-drawio draw.io diagrams
fcp-midi MIDI composition
fcp-sheets Spreadsheets
fcp-slides Slide decks
fcp-terraform Terraform HCL
fcp-rust Rust codebases via rust-analyzer
fcp-python Python codebases via pylsp
fcp-regex Regex via named fragment composition

Documentation · contact@ostk.ai

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