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