opencode-cli MCP server

opencode-cli-mcp

📖 Installation Guide - quick start, manual setup, and troubleshooting 📖 Onboarding - 5-minute first-run guide 📖 Full reference - tools, endpoints, env vars, architecture

MCP server wrapping opencode CLI's HTTP API (opencode serve) into 22 FastMCP tools (7 primary portmanteaus + 15 legacy aliases). Also includes a FastAPI REST bridge (unified with the MCP endpoint on one port), a Vite/React fleet-standard dashboard, and OpenCode custom tools that extend opencode itself.

Pattern: Plan with Claude, implement with opencode. Claude (expensive, high-judgment) orchestrates and supervises; opencode handles implementation grunt work on cheaper models (DeepSeek V4 Flash/Pro).

🧠 Eternal Session Memory — opencode stores every session since install in one searchable SQLite database. Ask it "what were we discussing last December about X?" — no other agentic IDE can do that. opencode-cli-mcp makes that memory searchable, exportable, editable, and backed up.

What can you do?

Capability	How
Wayback session find	opencode_depot(action="search", query="...") — full-text (FTS5) across every session transcript and title, ever. "What were we working on in December?"
Semantic recall (RAG)	opencode_depot(action="rag", query="...") — embeddings-based similarity over indexed transcripts; find it when you don't remember the words. rag_index builds the index, rag_status shows state
Read the past	opencode_sessions(action="messages"|"diff"|"export", session_id=...) — full transcript, file changes, or a clean markdown/html document
Edit the past	rename / archive / unarchive / delete sessions (live API or offline depot)
Never lose it	opencode_backups(action="create"|"restore", ...) — db + config snapshots, rotation, disk guard, autobackup every 24h
Run agents	opencode_runs(action="start"|"status"|"list"|"cancel", ...) — launch, supervise, review
Manage opencode	opencode_system(...) — status, providers, project, MCP pulse, config drift
Desktop sidebar	sidebar/opencode-sidebar.ahk (AHK v2 companion, outside the .mcpb) — docked session list, palette jump, right-click rename/archive/delete, hover previews. See docs/SIDEBAR.md

Install

Download: opencode-cli-mcp-0.2.11-setup.exe - installs the desktop app and its embedded backend in one step (Windows, current user, no admin).

The installer is unsigned, so SmartScreen will warn. Click More info → Run anyway.

All releases, older versions, and the .mcpb bundle: Releases.

You want	Use
Desktop app + backend	opencode-cli-mcp-0.2.11-setup.exe above
MCP server inside Claude Desktop only	opencode-cli-mcp-0.2.11.mcpb from Releases
Manual setup, prerequisites, troubleshooting	INSTALL.md
Development setup and build recipes	docs/DEVELOPMENT.md

Every path needs the opencode CLI installed (npm i -g opencode-ai).

MCP Tools

Primary surface - seven portmanteaus (operation discriminator):

Tool	Purpose
opencode_runs(action=...)	start / status / list / cancel agent runs
opencode_sessions(action=...)	list / get / messages / send / diff / grep / export / rename / delete sessions (live opencode serve API - the opencode UI picks the changes up immediately)
opencode_depot(action=...)	eternal memory - list/archive/unarchive/rename/delete/search/stats over the opencode SQLite DB. Full-text search across EVERY session since install, works offline (no opencode serve needed).
opencode_backups(action=...)	protect the memory - db + config snapshots (consistent online backup API), rotation, disk-space guard, guarded restore (refuses while serve runs unless force=True)
opencode_system(action=...)	status / providers / project / launch_ui / mcp_pulse / config_drift
opencode_mcpb_install(...)	install .mcpb bundles into opencode config
opencode_shutdown(confirm=...)	graceful self-termination

15 legacy atomic tools remain mounted as aliases through 0.2.x (opencode_run_agent, opencode_get_run_status, opencode_list_runs, opencode_cancel_run, opencode_list_sessions, opencode_get_session, opencode_send_message, opencode_get_messages, opencode_session_diff, opencode_server_status, opencode_list_providers, opencode_get_project, opencode_get_config, opencode_get_health, opencode_launch_ui, plus opencode_session_grep / opencode_export_session / opencode_config_drift / opencode_mcp_pulse).

Prefab in-chat cards: show_runs_app, show_sessions_app, show_status_app.

Eternal Session Memory

opencode records every conversation and agent run since install into one searchable SQLite database (~/.local/share/opencode/opencode.db). No other agentic IDE has this — you cannot ask Claude or Cursor "what were we discussing last December about santiclaus-mcp?", but you can ask opencode:

opencode_depot(action="search", query="santiclaus")          # wayback find - full-text across ALL transcripts
opencode_depot(action="rag", query="santiclaus")             # semantic recall - embeddings over indexed transcripts
opencode_depot(action="rag_index")                           # build the RAG index (once)
opencode_sessions(action="get", session_id="ses_...")        # metadata
opencode_sessions(action="messages", session_id="ses_...")   # the transcript
opencode_sessions(action="export", session_id="ses_...")     # markdown/html document
opencode_backups(action="create", kind="all")                # protect it (autobackup 24h)

Full walkthrough: docs/ETERNAL_MEMORY.md (also on the webapp Help page and History page).

Key Workflows

See Usage Guide for full details.

Basic: Launch -> Poll -> Review

opencode_run_agent(prompt="refactor main.py", wait=false)
    -> { job_id: "abc" }
opencode_get_run_status("abc")     -> poll until completed
opencode_session_diff("session-xyz") -> review changes

Multi-Agent Sweep

Launch N agents across N repos in parallel, poll all, review diffs. Designed for fleet-wide operations.

Interactive Supervision

Start an agent, read its messages mid-task, send corrections, review final diff.

OpenCode Custom Tools

Copy .opencode/tools/*.ts into your opencode project to give opencode's LLM direct access to MCP fleet management, session inspection, and system diagnostics. 6 tools covering fleet, sessions, runs, system, providers, and tool discovery. See the OC Tools page in the webapp for full documentation and source.

Documentation

Doc	Description
Onboarding	5-minute first-run guide
Usage Guide	All tools, workflows, async patterns, webapp pages
Integration Guide	MCP client config (Claude Desktop, Cursor, Windsurf)
Advanced Usage	Async patterns, session management, cross-project, custom tools
Improvement Plan	Known issues and roadmap
Changelog	Version history

Stack

• Backend: Python 3.12+, FastMCP 3.4.4, FastAPI, uvicorn, httpx, pydantic v2, prefab-ui, psutil, SQLite (job store)
• Frontend: React 18, Vite 5, TypeScript, TailwindCSS 3.4, Zustand, Framer Motion, Lucide, React Router, @tauri-apps/api
• Native: Tauri 2 (NSIS installer, embedded PyInstaller backend)
• Quality: ruff, biome, pytest (+coverage), Playwright e2e, pre-commit, just

Ports

Port	Service
10950	Frontend (Vite)
10951	Backend (FastAPI)
4097	opencode serve (dedicated; desktop app owns 4096)

Security

This MCP server runs arbitrary shell commands (opencode run) from LLM prompts. Only install in environments where you trust your MCP client (Claude Desktop, Cursor) and the models it uses.

Fleet

• Registered in mcp-central-docs: ports 10950/10951
• fleet-registry.json and glama.json in repo root
• Webapp dashboard: http://localhost:10950 (run .\start.ps1)