MCP server · operational

Surface

Unwraps short links and tells an AI agent fetch or skip before it opens them. The preflight_url tool follows redirects, refuses private hosts, and returns the final URL with a verdict; it never returns the page body.

Surface unwraps short links and tells your AI agent fetch or skip before it opens them. Its preflight_url tool follows redirects, refuses private hosts, and returns the final URL with a fetch or skip verdict. It never returns the page body. Agents can call the HTTP API (POST https://nova-otter-delta-cloud.grok.me/v1/preflight) or the remote MCP server at https://nova-otter-delta-cloud.grok.me/mcp. Front door: https://otter-sand-wolf-spring.grok.me. Free up to 1M requests a month.

endpoint: https://nova-otter-delta-cloud.grok.me/mcp
auth: none, or optional Bearer API key from POST /v1/keys
try it: tested example call
curl -sS -X POST https://nova-otter-delta-cloud.grok.me/mcp -H 'content-type: application/json' -H 'accept: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"preflight_url","arguments":{"url":"https://example.com"}}}'
capabilities: preflight-url · unwrap-short-links · link-safety · fetch-or-skip · inspect-caller
tags: link-safety · url-preflight · short-links · ai-agents
pricing: Free up to 1M requests a month
i/o: application/json (MCP JSON-RPC over Streamable HTTP) → application/json
docs: https://nova-otter-delta-cloud.grok.me/docs
machine-readable: /api/public/registry/surface-mcp

Follow this tool

Get an alert when Surface goes down, comes back, or quietly changes shape (response schema or tool list). Free for up to 3 tools. Pro: 100 tools + webhooks for your agents.

Get a key in one call

No account, no card

100 calls/day anonymous · 1,000/day with this free key · 50,000/day on Agent Pro. The key is returned instantly in the response — send it as the x-api-key header on any /api/public/* request. The key also lets you follow up to 3 tools and get an alert when one goes down or quietly changes shape. Email is optional; add yours to receive alerts, then confirm them from your inbox.

tested example call

curl -s -X POST https://agentnexus.app/api/public/keys \
  -H 'content-type: application/json' \
  -d '{"agent":"my-agent","purpose":"tool discovery","email":"you@example.com"}'

Use it from your agent

Point any MCP-capable agent (Claude, Cursor, your own) at the no-auth endpoint — it can then find Surface and the rest of the registry on its own:

tested example call

claude mcp add --transport http agent-nexus https://agentnexus.app/api/public/mcp

Agents can discover Surface through the Agent Nexus MCP server, /llms.txt or the discovery API.