Faceabot
‹ Back

Catalog › io.usefulapi/classmarker

Is ClassMarker MCP by usefulapi reliable?

Reliable (measured) Yes. Faceabot measured ClassMarker MCP by usefulapi 26 times: 100% of checks succeeded, including the last 26 in a row (last check 2026-10-19 16:25 UTC).

Last check: 2026-10-19 16:25 UTC · answered in 6848 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 ClassMarker groups, links, exams and recent results; manage question bank and access codes.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.0.0 · publisher website
Connect your agent
{
  "mcpServers": {
    "classmarker": {
      "url": "https://classmarker.usefulapi.io/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"io.usefulapi/classmarker"} 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
WhenAnswersReal taskLatency
2026-10-19 16:25 UTC✅ ok❌ auth_required6848 ms
2026-10-19 01:35 UTC✅ ok❌ auth_required7614 ms
2026-10-18 10:10 UTC✅ ok❌ auth_required6000 ms
2026-10-18 01:55 UTC✅ ok❌ auth_required3547 ms
2026-10-17 17:45 UTC✅ ok❌ auth_required6358 ms
2026-10-17 09:40 UTC✅ ok❌ auth_required5115 ms
2026-10-17 01:45 UTC✅ ok❌ auth_required5171 ms
2026-10-16 18:31 UTC✅ ok❌ auth_required5827 ms
2026-10-16 11:25 UTC✅ ok❌ auth_required4979 ms
2026-10-16 04:30 UTC✅ ok❌ auth_required4742 ms
2026-10-15 21:35 UTC✅ ok❌ auth_required6059 ms
2026-10-15 14:46 UTC✅ ok❌ auth_required4878 ms
2026-10-15 08:05 UTC✅ ok❌ auth_required3590 ms
2026-10-15 01:30 UTC✅ ok❌ auth_required4333 ms
2026-10-14 19:05 UTC✅ ok❌ auth_required7860 ms
2026-10-14 12:35 UTC✅ ok❌ auth_required4065 ms
2026-10-14 06:11 UTC✅ ok❌ auth_required7482 ms
2026-10-13 23:21 UTC✅ ok❌ auth_required8273 ms
2026-10-13 17:15 UTC✅ ok❌ auth_required6666 ms
2026-10-13 11:05 UTC✅ ok❌ auth_required5936 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.

More from the same publisher

17TRACK MCP by usefulapi Reliable (measured) · 100% over 26 checks

Track parcels across 3000+ carriers with 17TRACK: register numbers, read tracking events and quota.

MCP endpoint : https://17track.usefulapi.io/mcp · website · measurements and details
Ably MCP by usefulapi Being measured · 100% over 1 checks

MCP server for Ably — channel history, presence, occupancy, stats, publish, and app management.

MCP endpoint : https://ably.usefulapi.io/mcp · website · measurements and details
Abstract API MCP by usefulapi Reliable (measured) · 100% over 24 checks

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

MCP endpoint : https://abstract-api.usefulapi.io/mcp · website · measurements and details
Accelo MCP by usefulapi Being measured · 100% over 2 checks

Manage Accelo companies, contacts, jobs, tasks, tickets and time.

MCP endpoint : https://accelo.usefulapi.io/mcp · website · measurements and details
Accredible MCP by usefulapi Reliable (measured) · 100% over 26 checks

Read Accredible credentials, groups, designs, analytics, skills; issue one credential as a draft.

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

Find tools similar to ClassMarker MCP by usefulapi →

Publisher of ClassMarker MCP by usefulapi?

Show your measured reliability on your README or website:

Faceabot reliability badge for ClassMarker MCP by usefulapi

[![Measured by Faceabot](https://faceabot.com/badge/io.usefulapi/classmarker.svg)](https://faceabot.com/tools/io.usefulapi/classmarker)
Data in JSON: /api/catalog?id=io.usefulapi/classmarker · 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

Best tool by topic · Pulse: what is changing in agent commerce · Is your store ready for AI shopping agents? · State of MCP (weekly) · MCP server doctor · Reliability data · Faceabot app · Faceabot → AI assistants · What AI agents cannot find yet · Add Faceabot to your AI · Badge for tool publishers · Help · Privacy · Terms