How do I connect an AI agent to Abstract API MCP by usefulapi?

Use the MCP streamable HTTP endpoint https://abstract-api.usefulapi.io/mcp.

Catalog › io.usefulapi/abstract-api

Is Abstract API MCP by usefulapi reliable?

Reliable (measured) Yes. Faceabot measured Abstract API MCP by usefulapi 23 times: 100% of checks succeeded, including the last 23 in a row (last check 2026-10-19 08:20 UTC).

Last check: 2026-10-19 08:20 UTC · answered in 7030 ms · remote (no install)

En français : Fiable (mesuré). Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Validate emails, phones, IBAN, VAT; look up IPs and companies; rates, holidays, time via Abstract.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.0.0 · publisher website

Connect your agent

{
  "mcpServers": {
    "abstract-api": {
      "url": "https://abstract-api.usefulapi.io/mcp"
    }
  }
}

Or ask Faceabot first: MCP tool check_reliability {"id":"io.usefulapi/abstract-api"} on https://faceabot.com/api/mcp.

Does it actually do the job?

Not tested with a real task yet. Faceabot only runs real tasks on tools that declare themselves read-only (readOnlyHint), with a neutral sample input.

Faceabot measurements

When	Answers	Real task	Latency
2026-10-19 08:20 UTC	✅ ok	❌ auth_required	7030 ms
2026-10-18 15:35 UTC	✅ ok	❌ auth_required	5665 ms
2026-10-18 04:45 UTC	✅ ok	❌ auth_required	5184 ms
2026-10-17 20:45 UTC	✅ ok	❌ auth_required	4750 ms
2026-10-17 12:20 UTC	✅ ok	❌ auth_required	5360 ms
2026-10-17 04:40 UTC	✅ ok	❌ auth_required	6016 ms
2026-10-16 21:00 UTC	✅ ok	❌ auth_required	4103 ms
2026-10-16 13:50 UTC	✅ ok	❌ auth_required	5230 ms
2026-10-16 06:50 UTC	✅ ok	❌ auth_required	4730 ms
2026-10-15 23:55 UTC	✅ ok	❌ auth_required	4747 ms
2026-10-15 17:02 UTC	✅ ok	❌ auth_required	5727 ms
2026-10-15 10:16 UTC	✅ ok	❌ auth_required	3837 ms
2026-10-15 03:45 UTC	✅ ok	❌ auth_required	3758 ms
2026-10-14 21:20 UTC	✅ ok	❌ auth_required	6889 ms
2026-10-14 14:50 UTC	✅ ok	❌ auth_required	4417 ms
2026-10-14 08:25 UTC	✅ ok	❌ auth_required	2906 ms
2026-10-14 01:36 UTC	✅ ok	❌ auth_required	6356 ms
2026-10-13 19:25 UTC	✅ ok	❌ auth_required	8640 ms
2026-10-13 13:20 UTC	✅ ok	❌ auth_required	8086 ms
2026-10-13 07:15 UTC	✅ ok	❌ auth_required	7120 ms

Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

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Read appointments, types, calendars and availability; create, cancel or reschedule bookings.

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Publisher of Abstract API MCP by usefulapi?

Show your measured reliability on your README or website:

[![Measured by Faceabot](https://faceabot.com/badge/io.usefulapi/abstract-api.svg)](https://faceabot.com/tools/io.usefulapi/abstract-api)

Data in JSON: /api/catalog?id=io.usefulapi/abstract-api · Stop probes: POST /api/reliability/opt-out

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

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