OnCrawl MCP server: setup, pricing & agent-readiness

How to connect OnCrawl MCP to Claude Desktop

Add this block to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows), then restart Claude Desktop. Cursor and Codex use a similar schema.

{
  "mcpServers": {
    "oncrawl": {
      "command": "npx",
      "args": ["-y", "<server-package-name>"],
      "env": {
        "ONCRAWL_API_KEY": "your-api-key-here"
      }
    }
  }
}
// Server source: https://github.com/Amaculus/oncrawl-mcp-server
// Check the server's README for the exact "command" and required env vars.

Some MCP servers require an API key. Check the source page for setup: github.com/Amaculus/oncrawl-mcp-server.

Does OnCrawl MCP cost extra?

Community (free)

The OnCrawl MCP server is community-built — free to run, but you still pay for your OnCrawl subscription.

Community MCPs are normally self-hosted from a GitHub repo. There's no extra license fee.
Your OnCrawl account still needs whatever plan is required to access the data the MCP server queries.
Trade-off: zero MCP cost, but no guarantee it'll keep working when OnCrawl changes their UI or API.

MCP cost

Free (self-hosted)

Subscription required

Yes (your tool plan)

Maintained by

Community

OnCrawl also publishes a REST API

OnCrawl publishes an API, but per-tier gating wasn't extracted automatically.

API docs

developer.oncrawl.com

Auth method

—

SDK languages

—

OpenAPI spec

—

Webhooks

—

Structured outputs

—

See OnCrawl API page

What you can do with OnCrawl from an AI agent

Three shapes of agent workflow. Pick the row that matches how you actually use Claude / Cursor / Codex day to day.

INDIE / SOLO

Skip the dashboard, ask Claude

"What keywords moved this week?" answered in seconds
Quick one-off questions without leaving the editor
Pipe OnCrawl data into your personal notes / docs without writing a script

Effort: 30 seconds — paste the config, restart Claude

AGENCY

Run client analysis at agent speed

Hand the MCP server to your team — every consultant can ask Claude about any client's OnCrawl account
Multi-account workflows without context-switching the OnCrawl UI
Reports you'd normally spend hours on, done before standup

Effort: An afternoon — set up auth per client

IN-HOUSE TEAM

Production agent workflows

Embed in your internal Codex / Cursor agents that triage OnCrawl data daily
Combine with other MCP servers in a multi-step agent chain
Constrain agents to read-only roles to keep production OnCrawl safe

Effort: Days — security review + role config

Limits and gotchas

Community MCP — not maintained by OnCrawl. Check the README and last-update date before depending on it.
Fallback: the REST API works for any flow the MCP server doesn't cover.
Rate limits: MCP calls count against your underlying OnCrawl API quota. Burst usage from a curious agent can drain a daily allowance fast.

5/10

Agent-readiness verdict

Moderate agent potential with community MCP support. OnCrawl has a documented public API and ChatGPT integration, plus an active community-built MCP server for broader LLM compatibility. The lack of official OpenAPI specs and Claude integration limits its native accessibility in modern agent stacks.

MCP server availablePublic API with docsNative ChatGPT integration

Scored 2026-05-21 by Joonas (TMB).

OnCrawl MCP & API FAQ

Is the OnCrawl MCP server official?+

No — it's a community build, not maintained by OnCrawl. Expect occasional drift and check the README before depending on it for production agents.

Can I use the OnCrawl MCP with Cursor or Codex?+

Yes — MCP is a protocol, not Claude-specific. Any MCP-capable client (Cursor, Codex, Windsurf, Zed) can use the same server config with minor path adjustments.

Does OnCrawl have a public API?+

Yes — public REST API at developer.oncrawl.com.

Which LLMs does OnCrawl integrate with directly?+

ChatGPT. Direct integrations skip the need for custom API wrappers.

Sources

OnCrawl official site: https://www.oncrawl.com
MCP server page: https://github.com/Amaculus/oncrawl-mcp-server
API docs: https://developer.oncrawl.com

Data verified by Joonas on the dates shown. MCP server status auto-rechecked weekly.

OnCrawl MCP Server

What is the OnCrawl MCP server?

What you actually do with the OnCrawl MCP