Witness MCP Server

witness turns a stream of text into a dated record of how its subject changed. Feed it your AI coding sessions and it tracks how you think and work. Feed it market commentary, research notes, or any document stream and it tracks how that changed instead. One pure-Go binary, a local SQLite archive plus plain markdown, served to your agent over MCP.

People connecting coding agent tools to Claude, Cursor, VS Code, or another MCP client. The project is written in Go.

VERIFIED ACTIVE

LAST COMMIT 2026-08-24 · ★ 8 · #28 OF 194 MAINTAINED CODING AGENT · VERIFIED 2026-08-25

MIT · Go servers · how we verify → /methodology

01 · Install Witness

Claude Code

claude mcp add ingtian-witness -- npx -y @witness-ai/opencode

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "ingtian-witness": {
      "command": "npx",
      "args": [
        "-y",
        "@witness-ai/opencode"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

repo age created 2026-07-02 - young repo, little track record yet

license MIT - declared in the repository

npm package @witness-ai/opencode - the @witness-ai scope differs from the repo owner (ingtian); confirm it's the project's official package

registry namespace io.github.IngTian is GitHub-verified and matches the repo owner

03 · What Witness can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.8.0 · 2026-08-24

If you have ever run witness export as a backup, that backup is incomplete - please re-take it with --all. This release exists because of that, and it is the reason for a minor rather than a patch bump. · witness…

v0.7.9 · 2026-08-09

Metadata only - code-identical to v0.7.7. Nothing to adopt. · v0.7.8 published the corrected npm listings successfully but failed to update the MCP Registry: the registry caps a server description at 100 characters and…

v0.7.8 · 2026-08-09

Metadata only - code-identical to v0.7.7. Nothing to adopt; skip this one unless you care how witness describes itself. · npm versions and MCP Registry entries are immutable, so the listing corrections that landed…

04 · Who maintains Witness

witness is maintained by ingtian. It's the only MCP server we track from this author; the repo dates to Jul 2026.

05 · Facts

repository: github.com/ingtian/witness
website: https://github.com/IngTian/witness#readme
category: coding agent - ranked #28 of 194 actively-maintained coding agent servers as of 2026-08-25.
release cadence: 10+ releases in the last 90 days (latest 2026-08-24)
registry: io.github.IngTian/witness (active, first published 2026-07-26 · 15 versions)
packages: npm:@witness-ai/opencode

06 · Witness FAQ

What is Witness?

Is Witness still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-24 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Witness?

Run `npx -y @witness-ai/opencode`. You can also paste the ready-made client config above.

Does Witness run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Witness

Alternatives to Witness

Maintained coding agent servers if Witness isn't the fit.

Pairs well with

Servers that cover what Witness doesn't - only shown when the pairing reason fits the companion.

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