MCP Server modified by Viktor Fási

Viktor Fási — Wed, 06 May 2026 09:06:52 -0000

MCP Server

The Lastest MCP server (@lastest/mcp-server) is a Model Context Protocol server that lets AI agents (Claude Code, Claude Desktop, Cursor, Cline, Windsurf, etc.) drive your Lastest instance directly.

With it, an agent can:

List repositories, tests, functional areas, and builds
Create and run tests, including AI-authored tests from a URL or prompt
Inspect test runs and background jobs
Review visual diffs and approve / reject baselines
Heal failing tests via AI

Package

npm: @lastest/mcp-server
Source: packages/mcp-server
Transport: stdio
Bin: lastest-mcp

Prerequisites

A running Lastest instance reachable over HTTP(S).
An API key generated from the Lastest UI: Settings → Agents & API Access → Create API Key (see [Settings Reference]). Copy the key — it is shown only once.
Node.js 18+ on the machine running the agent.

Quick start — Claude Code

claude mcp add lastest -- npx -y @lastest/mcp-server@latest \
  --url https://your-lastest-instance \
  --api-key YOUR_API_KEY

Verify it loaded:

claude mcp list

Quick start — Claude Desktop / generic JSON config

Add this to claude_desktop_config.json (or any MCP-compatible client config):

{
  "mcpServers": {
    "lastest": {
      "command": "npx",
      "args": [
        "-y",
        "@lastest/mcp-server@latest",
        "--url",
        "https://your-lastest-instance",
        "--api-key",
        "YOUR_API_KEY"
      ]
    }
  }
}

Restart the client after editing.

Cursor

Cursor reads ~/.cursor/mcp.json. Use the same JSON shape as Claude Desktop above.

Available tools

The server exposes a tool per high-level operation. Names may evolve — use the agent's "list tools" command to see the current set. Categories:

Category	Examples
Repositories	`list_repos`, `get_repo`
Tests	`list_tests`, `get_test`, `create_test`, `update_test`, `delete_test`, `heal_test`
Functional areas	`list_areas`, `create_area`, `list_tests_by_area`
Builds & runs	`create_build`, `get_build`, `list_builds`, `get_run`
Diffs	`get_diff`, `approve_diff`, `reject_diff`, `approve_all_diffs`
Jobs	`get_active_jobs`, `get_job`
Coverage	`get_coverage`

All tools return a structured ToolResponse with status, summary, optional actionRequired, and details.

Authentication

The MCP server authenticates against Lastest's REST API (/api/v1/*) with a Bearer token. The same key works for the VSCode Extension API. Manage and revoke keys from Settings → Agents & API Access.

Troubleshooting

Symptom	Fix
`Failed to connect to Lastest at ...`	Check the URL is reachable from the machine running the agent and that the API key is valid.
`Lastest API error 401`	Token revoked or expired — generate a new one in Settings.
Tools don't appear in Claude Code	Run `claude mcp list`; if missing, re-run `claude mcp add`. Restart the client.
`command not found: npx`	Install Node.js 18+.

Local development

cd packages/mcp-server
pnpm install
pnpm dev -- --url http://localhost:3000 --api-key <key>

Recent changes to MCP Server