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

Use the MCP streamable HTTP endpoint https://invoiced.usefulapi.io/mcp.

Catalog › io.usefulapi/invoiced

Is Invoiced MCP by usefulapi reliable?

Reliable (measured) Yes. Faceabot measured Invoiced MCP by usefulapi 26 times: 100% of checks succeeded, including the last 26 in a row (last check 2026-10-19 15:20 UTC).

Last check: 2026-10-19 15:20 UTC · answered in 8029 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

Read Invoiced customers, invoices, payments, subscriptions; create customers, draft invoices, notes.

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

Connect your agent

{
  "mcpServers": {
    "invoiced": {
      "url": "https://invoiced.usefulapi.io/mcp"
    }
  }
}

Or ask Faceabot first: MCP tool check_reliability {"id":"io.usefulapi/invoiced"} 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 15:20 UTC	✅ ok	❌ auth_required	8029 ms
2026-10-19 00:05 UTC	✅ ok	❌ auth_required	5604 ms
2026-10-18 09:05 UTC	✅ ok	❌ auth_required	6482 ms
2026-10-18 01:20 UTC	✅ ok	❌ auth_required	4404 ms
2026-10-17 17:10 UTC	✅ ok	❌ auth_required	4796 ms
2026-10-17 09:05 UTC	✅ ok	❌ auth_required	4881 ms
2026-10-17 01:05 UTC	✅ ok	❌ auth_required	5230 ms
2026-10-16 17:55 UTC	✅ ok	❌ auth_required	6045 ms
2026-10-16 10:55 UTC	✅ ok	❌ auth_required	4464 ms
2026-10-16 04:01 UTC	✅ ok	❌ auth_required	5005 ms
2026-10-15 21:05 UTC	✅ ok	❌ auth_required	5751 ms
2026-10-15 14:16 UTC	✅ ok	❌ auth_required	5429 ms
2026-10-15 07:40 UTC	✅ ok	❌ auth_required	3482 ms
2026-10-15 01:05 UTC	✅ ok	❌ auth_required	3324 ms
2026-10-14 18:40 UTC	✅ ok	❌ auth_required	5841 ms
2026-10-14 12:10 UTC	✅ ok	❌ auth_required	5305 ms
2026-10-14 05:46 UTC	✅ ok	❌ auth_required	7921 ms
2026-10-13 23:01 UTC	✅ ok	❌ auth_required	6329 ms
2026-10-13 16:55 UTC	✅ ok	❌ auth_required	5604 ms
2026-10-13 10:46 UTC	✅ ok	❌ auth_required	6101 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 Accredible credentials, groups, designs, analytics, skills; issue one credential as a draft.

MCP endpoint : https://accredible.usefulapi.io/mcp · website · measurements and details

Publisher of Invoiced MCP by usefulapi?

Show your measured reliability on your README or website:

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

Data in JSON: /api/catalog?id=io.usefulapi/invoiced · 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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