Access, auth, and limits
There is no auth layer because there is no remote server: it runs on your machine against your licensed copy of SEO Spider v24, in stdio mode or on localhost:11435/mcp. A paid licence is required, the free version will not run it, and database storage mode has to be enabled. Any listing showing a public MCP URL for Screaming Frog is pointing at the guide, not an endpoint.
One practical constraint that will catch you out: the GUI must be closed before MCP tools will work. The intended rhythm is crawl in the GUI, close it, then let the agent analyse and export. Leave the Node.js execution tools off unless you have a specific reason to enable them, since they let the model run arbitrary scripts locally and that is a much larger grant than reading crawl data.
Where it works and what to build
Claude Desktop is the documented stdio target, and the optional localhost HTTP mode covers clients like LM Studio that prefer a URL. Both run against the same local install.
The workflow this changes is large-crawl analysis. A hundred-thousand-URL crawl is unpleasant to interrogate through the UI, and asking an agent which templates generate the most duplicate titles, or which orphaned pages still receive internal links, gets you an answer in one turn. The GUI-must-be-closed rule makes this a batch activity rather than an interactive one, so plan the crawl first and the questions after.
Which AI clients can use Screaming Frog MCP?
Not every AI assistant supports MCP natively. Per-client picture for Screaming Frog:
| Client | Support | Notes |
|---|---|---|
| Claude (Desktop/Web) | Native MCP | — |
Does Screaming Frog MCP cost extra?
Screaming Frog ships an official MCP server that uses your existing subscription credentials.
- No separate MCP licence to buy. You pay for your Screaming Frog plan, the MCP server queries that account.
- Whether it's gated to a specific tier wasn't extracted automatically — verify the access requirements on the MCP page or pricing docs.
Screaming Frog also publishes a REST API
Screaming Frog publishes an API, but per-tier gating wasn't extracted automatically.
What you can do with Screaming Frog from an AI agent
Three shapes of agent workflow. Pick the row that matches how you actually use Claude / Cursor / Codex day to day.
Skip the dashboard, ask Claude
- "What keywords moved this week?" answered in seconds
- Quick one-off questions without leaving the editor
- Pipe Screaming Frog data into your personal notes / docs without writing a script
Run client analysis at agent speed
- Hand the MCP server to your team — every consultant can ask Claude about any client's Screaming Frog account
- Multi-account workflows without context-switching the Screaming Frog UI
- Reports you'd normally spend hours on, done before standup
Production agent workflows
- Embed in your internal Codex / Cursor agents that triage Screaming Frog data daily
- Combine with other MCP servers in a multi-step agent chain
- Constrain agents to read-only roles to keep production Screaming Frog safe
Limits and gotchas
- Official MCP server — published by Screaming Frog themselves, so it should track product changes.
- Fallback: the REST API works for any flow the MCP server doesn't cover.
- Auth flow: MCP servers usually inherit the underlying API auth method (oauth2). Expect to configure that on first install.
- Rate limits: MCP calls count against your underlying Screaming Frog API quota. Burst usage from a curious agent can drain a daily allowance fast.
Agent-readiness verdict
The deepest crawler MCP available, gated behind a paid licence and a local install. The default-off script execution and the blunt warning around it are a model for how to ship a powerful local server responsibly.
Moderate agent-fit with official MCP support. Screaming Frog has an official MCP server and documented API with OAuth, making it accessible to Claude and Gemini workflows for technical SEO audits. The lack of OpenAPI specs, SDKs, and structured outputs limits deeper integration and makes parsing crawl data require custom handling.
Scored by Joonas (TMB).
Screaming Frog MCP & API FAQ
Is the Screaming Frog MCP server official?+
Can I use the Screaming Frog MCP with Cursor or Codex?+
Does Screaming Frog have a public API?+
Sources
- Screaming Frog official site: https://www.screamingfrog.co.uk/seo-spider/
- API docs: https://www.screamingfrog.co.uk/guides/mcp-server/
Data verified by Joonas on the dates shown. MCP server status auto-rechecked weekly.
10+ years in digital marketing. I review marketing software for AI-stack fit: real pricing, MCP and API support, and how cleanly each tool drops into an AI agent workflow, cross-checked against verified data and real user feedback.