Open Source

Developer tools built in the open. Code intelligence, spec-driven development, and MCP server management.

lgrep

Open Source
1

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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Advance

Open Source
1

Spec-driven engineering infrastructure for OpenCode. Turn AI-assisted development into a governed loop with specs as laws, 7 gates, Temporal-backed task state, and evidence-first delivery.

  • Specs as laws with proposal, agreement, and archive artifacts
  • 7-gate workflow from proposal through release
  • Temporal-backed change and task orchestration
  • TDD evidence, checkpoints, review, and hardening built in
  • OpenCode-first, with Claude Code and ACP-first versions planned

Technical Details

  • Temporal workflow engine for durable change and task state with replay-safe updates
  • 7-gate state machine: proposal → discovery → design → planning → execution → acceptance → release
  • Spec-as-law model: committed .adv/specs/*.md files serve as architectural contracts
  • Contract minting with review matrices for evidence-based acceptance gate
  • Per-change git worktree isolation with merge-before-delete protocol
  • TDD protocol (RED/GREEN) with checkpoint commits and doom-loop detection
  • Sub-agent orchestration: adv-engineer, adv-researcher, adv-reviewer with depth-1 nesting limit
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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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