Sedis MCP Server

@sedis/mcp

A Model Context Protocol (MCP) server that wraps the Sedis PartnerAPI v2 as a small set of curated, read-only tools, so AI assistants and agents (Claude Desktop, Cursor, and any MCP-capable client) can query your Sedis Bolagsanalys (listed-company financials) and Fastighetsbenchmark (real-estate comparables) data in natural language. The server is a thin pass-through: it adds shape and transport only — every tenant-isolation, authentication, rate-limit, and billing rule lives in PartnerAPI v2, not here.

Install

Easiest: one-click Claude Desktop bundle (.mcpb) — recommended

For non-technical users, install the Desktop Extension — a single file, no Node, no JSON, no terminal:

1. Download sedis-mcp.mcpb from the latest release.
2. Double-click it (or open Claude Desktop → Settings → Extensions and drag it in) and click Install.
3. Paste your Sedis API key into the field that appears (stored in your OS keychain) and confirm.
4. Done — start a chat and ask, e.g. "Visa nyckeltal för Fabege" (lang: "sv" for Swedish).

The bundle packages the exact server described below together with its dependencies; Claude Desktop supplies the Node runtime, so the user installs nothing else. Ask your Sedis administrator for a key — a customer-level (M2M) key needs no per-session two-factor step. Maintainers build the bundle with npm run build:mcpb (output: dist/sedis-mcp.mcpb).

Manual config (any MCP client — Claude Code, Cursor, …)

The server runs over stdio and is launched on demand via npx — no global install needed. The canonical launch command is:

npx -y @sedis/mcp

Add it to your client's MCP config and set your PartnerAPI key:

{
  "mcpServers": {
    "sedis": {
      "command": "npx",
      "args": ["-y", "@sedis/mcp"],
      "env": {
        "SEDIS_API_KEY": "your-partnerapi-v2-key"
      }
    }
  }
}

• Claude Desktop: add the block above to claude_desktop_config.json.
• Cursor / other clients: add it to the client's mcp.json (same shape).

Configuration

The key is validated lazily — the server starts without it and returns a friendly, actionable error on the first tool call if it is missing or invalid. There is no startup ping.

Tools not showing up? MCP servers are loaded when your client starts — after editing the config, fully restart/reload the client (a new chat in the same window is not enough). If you registered it via a CLI (claude mcp add), make sure it landed in the right scope: a server added in one directory isn't visible in another project unless you use a global/user scope.

Session tokens (user-owned keys)

If your key is owned by a specific user (issued to a named person, not a machine/M2M integration key), PartnerAPI v2 requires a short-lived session token alongside X-Api-Key, refreshed periodically via two-factor auth:

1. On a 401 with reason session_expired / session_invalid, the tool error carries a reproveUrl. Open it in a browser, complete 2FA, and copy the freshly-minted sedis_sess_… token.
2. Paste it with the set_session tool — it is carried as X-Api-Session on the very next call, no client restart needed. Use clear_session to sign out.
3. Optionally seed a token at startup with the SEDIS_API_SESSION env var (handy for CI / power users); at runtime set_session always takes precedence.

Machine / org-wide keys (no owner) are headless — X-Api-Key only, no session token, and you never call set_session.

Local development / testing against beta

To run a local build (unpublished) or point at a non-prod environment, swap npx for the built entrypoint and override the base URL:

{
  "mcpServers": {
    "sedis-beta": {
      "command": "node",
      "args": ["/absolute/path/to/sedis-mcp/build/index.js"],
      "env": {
        "SEDIS_API_KEY": "your-beta-key",
        "SEDIS_API_BASE_URL": "https://beta.sedis.se"
      }
    }
  }
}

This is a development convenience only — production users just use the npx -y @sedis/mcp block above with a single SEDIS_API_KEY.

Tools

All tools are read-only. Tenant scope is enforced by v2: the "YOUR …" tools only ever return data your key is entitled to, and a request for another tenant's object comes back as a friendly not found (never a 403 that would leak existence).

Bolagsanalys (listed-company financials)

Fastighetsbenchmark (real-estate comparables)

Names and descriptions are English by default; pass lang: "sv" on the parameter-discovery and property-unit tools to get Swedish.

Session (user-owned keys)

These are needed only for user-owned keys (see Session tokens above); machine / org-wide keys never use them.

Errors are mapped from PartnerAPI v2's RFC 7807 problem responses into short, friendly tool errors that carry a traceId for support — and never the API key or a stack trace. If a tool reports a session / two-factor re-verification error, open the reproveUrl in the message, complete 2FA, copy the new sedis_sess_… token, and paste it via the set_session tool — then retry (no client restart). See Session tokens (user-owned keys) above.

API reference

This server is a wrapper. The underlying endpoints, query conventions, multi-tenant isolation model, geometry, error shapes, rate limits, and data freshness are documented in the PartnerAPI v2 guide that Sedis provides with your API key — contact Sedis if you need access. The live OpenAPI description is served at <SEDIS_API_BASE_URL>/openapi/v2.json (default https://api.sedis.se/openapi/v2.json). This README does not duplicate that reference.

Data use

Use of Sedis data in AI/LLM contexts is subject to your Sedis agreement and the accompanying MCP data-use terms. See SECURITY.md for the key-handling and supply-chain posture.

Licence

MIT.