Open Source

Tools that sharpen your workflow. Built for developers who value precision.

Concord

Open Source
1

An organized product-development engine for coordinating several AI coding agents around one durable, evidence-backed record.

  • Durable SQLite record for requirements, work, evidence, knowledge, and research
  • Typed, authorized operations at the agent boundary
  • Approved outcome predicates checked at acceptance
  • Architecture-domain collision refusal before conflicting work starts
  • MIT licensed, installable from GitHub releases

Technical Details

  • Go core with SQLite as the sole durable authority
  • Append-only event history with rebuildable read projections
  • Atomic terminal transitions and typed degradation states
  • One local library-in-process authority per operator machine
  • OpenCode adapter for typed tool transport and session context
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lgrep

Open Source
3

Dual-engine code intelligence for OpenCode. Semantic search finds implementations by intent, while tree-sitter symbol tools handle exact lookup, outlines, and targeted source retrieval.

  • Semantic code search for intent-level discovery
  • Symbol lookup, file outlines, and repo outlines
  • Local-first indexes with one shared warm MCP server
  • MIT licensed with commercial use allowed
  • Built for parallel OpenCode agent workflows

Technical Details

  • Dual-engine: LanceDB semantic search + Tree-sitter symbol index
  • Hybrid retrieval: dense vectors combined with BM25 keyword scoring
  • Local LanceDB indexes — no cloud API calls, no data leaves your machine
  • MCP server over stdio — one warm process shared across OpenCode sessions
  • Incremental symbol indexing with file-watcher auto-refresh
  • Tree-sitter AST parsing for 40+ languages with precise scope-aware symbol resolution
  • CLI and MCP interfaces — works standalone or embedded in OpenCode/IDE
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Vision

Open Source
2

Autonomous MCP Gateway. Manage, monitor, and coordinate multiple MCP servers from a single daemon with hot-reload and health monitoring.

  • Single daemon, multiple MCP servers
  • Hot-reload configuration changes
  • Health monitoring and auto-restart
  • Catalog of pre-configured servers
  • OpenCode integration out of the box

Technical Details

  • MCP protocol gateway — proxies JSON-RPC between OpenCode and managed MCP servers
  • YAML-based server config with hot-reload (no restart for config changes)
  • Process lifecycle management: spawn, health-check, auto-restart crashed servers
  • HTTP proxy mode for remote MCP servers (Context7, Exa, searchcode)
  • OpenCode plugin integration — servers register via opencode.jsonc
  • Catalog of pre-configured servers: context7, exa, lgrep, time, playwright
  • Systemd user service support with vision daemon status/reload CLI
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