BetaBots-LLC/callimachus

Named for Callimachus, who built the first catalogue of the Library of Alexandria.
Download
Grab the latest signed build from **Releases** — macOS (.dmg, Apple Silicon), Windows (.msi), or Linux (.AppImage / .deb). The app auto-updates from there on. Prefer to build it yourself? See Develop.
What it does
- **Indexes** every conversation from 11 coding agents into one local SQLite store — Claude Code, Codex, Cursor, Gemini CLI, Qwen Code, Goose, OpenCode, Continue, Cline, Roo Code, and Kilo Code. Adding another source is a small, documented contract.
- **Searches** them with hybrid ranking: keyword (SQLite FTS5 / BM25) fused with on-device semantic similarity (sqlite-vec KNN, no cloud) via Reciprocal Rank Fusion. Filter by source, project, subagents, starred, and tags.
- **Finds code-aware** — type file:embed/mod.rs in the search bar (or cal files ) to find every thread that touched a path; backed by a file-mention index built at index time.
- **Distills knowledge** — free heuristic TODO extraction, plus opt-in LLM distillation of decisions, gotchas, and summaries, with cross-thread semantic recall of past decisions/gotchas. Optional **auto-distillation** drains new/changed threads in the background so memory self-populates. Runs on local Ollama (keyless), your logged-in **Claude Code or Codex CLI** subscription (keyless, no API key), or a cloud API key.
- **Curates the facts** — pin, edit, or delete distilled facts so your edits survive re-distilling, plus an LLM **"Review conflicts"** pass that flags decisions that contradict each other.
- **Remembers per project** — a **Projects** tab aggregates each repo's decisions, gotchas, and open TODOs into durable memory (grouped by a canonical project key, so worktrees / symlinks / ~ don't split one repo), with an LLM brief and a managed .callimachus/memory.md. That memory is prepended when you "Open in CLI", and you can inject it into any agent automatically: **Update AGENTS.md** (or cal agents) writes a managed block into the repo's AGENTS.md / CLAUDE.md, and cal hook feeds it to a Claude Code SessionStart hook.
- **Asks your history (RAG)** — a synthesized, cited answer over your own threads, with [thread N] citations back to the sources it used. Needs an LLM engine (Knowledge/distillation enabled).
- **Organizes into collections** — star threads and attach free-form tags, then filter the list by starred or by tag.
- **Chats** with an in-app agent (Anthropic / OpenAI / Gemini / OpenRouter / Ollama — local or Cloud — or your logged-in **Claude Code / Codex CLI** with no key) that can **search your own history** and **run shell commands with your approval**; streaming, cancellable, with live model lists. Chats are saved and become searchable too.
- **Carries context across tools** — open any thread in any agent CLI ("Open in Claude / Codex / Gemini …", seeded with the packed transcript), resume a Claude Code / Codex thread in its native CLI, copy context, or export a thread to Obsidian (optionally AI-summarized with decisions / gotchas / TODOs).
- **Links threads to commits** — infers **on-device** which git commits a thread produced, by overlapping the files a thread discussed with git log's changed files inside the thread's time window (shared-file count = confidence). See it as a thread→commit timeline (cal commits), per-thread in the desktop UI ("Produced commits"), or via the linked_commits MCP tool.
- **Snapshots agent sessions** — durable, resumable checkpoints of a thread (packed transcript + carry-forward project memory) for handoff across a context-window compaction or across tools; auto-captured via Claude Code PreCompact / SubagentStop hooks. Take, list, and resume them (cal snapshot / cal snapshots / cal resume, or the snapshot_session / list_snapshots / load_snapshot MCP tools).