langbot-space-ops

name

langbot-space-ops

description

Browse and search the LangBot Space marketplaces (plugins, MCP servers, skills) through the Space MCP server. Use when an AI agent needs to discover LangBot extensions on space.langbot.app over MCP. Covers the /mcp endpoint, Personal Access Token (PAT) auth, the tool surface, and client configuration. Triggers on "langbot space mcp", "search langbot plugins", "langbot marketplace mcp", "space.langbot.app mcp".

LangBot Space MCP Operations

LangBot Space (space.langbot.app) exposes an MCP server so user-facing AI agents can browse and search the marketplaces (plugins, MCP servers, skills) and rank live models for automated setup.

Endpoint

https://space.langbot.app/mcp

Transport: streamable HTTP (stateless, JSON responses). For a self-hosted Space instance: http://<host>:8383/mcp.

Authentication

Reuses the existing Personal Access Token (PAT) — the same token the lbp CLI uses. Create one in your Space account (Profile → Personal Access Tokens), then send it as a Bearer token:

Authorization: Bearer lbpat_...uests without a valid PAT get `401 Unauthorized`.

## Client configuration

```json
{
  "mcpServers": {
    "langbot-space": {
      "url": "https://space.langbot.app/mcp",
      "headers": { "Authorization": "Bearer <your-pat>" }
    }
  }
}

Tool surface

Tool	Purpose
list_plugins / search_plugins / get_plugin	Plugin marketplace
list_mcp_servers / search_mcp_servers / get_mcp_server	MCP-server marketplace
list_skills / search_skills / get_skill	Skill marketplace
select_models	Live best-first model list for setup wizards; optional category filter

list_* and search_* are paged (page, page_size). get_* takes author + name. The tool surface mirrors the REST endpoints under /api/v1/marketplace/*; select_models mirrors /api/v1/models/selection. All tools are read-only.

How to use

1. Create a PAT in your Space account settings.
2. Point your MCP client at https://space.langbot.app/mcp with the Bearer PAT.
3. Use search_plugins / search_mcp_servers / search_skills to find items, then get_* for details (e.g. to obtain author/name for installation in LangBot itself).
4. For automatic local-agent setup, call select_models (optionally with category) and choose the first compatible item. Ordering is latest probe state (available, unprobed, unavailable), then Space recommendation. Each item includes availability.up, last_probed_at, latency, and HTTP status.

Implementation & maintenance (for Space developers)

• Server: internal/controller/mcp/server.go (official Go MCP SDK github.com/modelcontextprotocol/go-sdk). Tools call the service layer (PluginService, MCPService, SkillService, ModelStatusService) directly.
• Mount: internal/controller/api.go at /mcp and /mcp/*any.
• Auth: PAT via AccountService.ValidatePersonalAccessToken.
• Docs: docs/MCP_SERVER.md.

When you add, remove, or change a marketplace API endpoint that should be agent-accessible, update the corresponding MCP tool and this skill. The MCP tool surface and the API must stay aligned (see AGENTS.md).

Pitfalls

• The PAT prefix is lbpat_ (Space), distinct from LangBot's lbk_ API keys.
• This server is read/browse only; it does not publish or modify marketplace items. Use the web UI or REST API (with appropriate auth) for that.