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Is OpenCancer reliable?

Reliable (measured) Yes. Faceabot measured OpenCancer 14 times: 100% of checks succeeded, including the last 14 in a row (last check 2026-10-19 13:40 UTC). It also does the job: its real read-only task worked 14 of 14 times.

Last check: 2026-10-19 13:40 UTC · answered in 7027 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

Cancer patient expert: NCCN-grounded answers with sources, recruiting trials, and expert review.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 2.0.0 · publisher website
Connect your agent
{
  "mcpServers": {
    "opencancer": {
      "url": "https://opencancer.ai/api/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"ai.opencancer/opencancer"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Does the job (tested) — Faceabot asked open_case to do a small read-only task 14 time(s): 14 returned a real result, the last 14 in a row. Last result: ok in 4798 ms.

Sample input: {}. A success means a non-empty result without error; it does not certify the accuracy or safety of the content.
Faceabot measurements
WhenAnswersReal taskLatency
2026-10-19 13:40 UTC✅ ok✅ done7027 ms
2026-10-18 21:50 UTC✅ ok✅ done6806 ms
2026-10-18 07:55 UTC✅ ok✅ done7155 ms
2026-10-18 00:10 UTC✅ ok✅ done6296 ms
2026-10-17 16:00 UTC✅ ok✅ done6721 ms
2026-10-17 07:55 UTC✅ ok✅ done5243 ms
2026-10-17 00:00 UTC✅ ok✅ done7044 ms
2026-10-16 16:50 UTC✅ ok✅ done7764 ms
2026-10-16 09:51 UTC✅ ok✅ done6203 ms
2026-10-16 02:55 UTC✅ ok✅ done5755 ms
2026-10-15 19:55 UTC✅ ok✅ done7687 ms
2026-10-15 13:11 UTC✅ ok✅ done4796 ms
2026-10-15 06:35 UTC✅ ok✅ done3580 ms
2026-10-15 00:00 UTC✅ ok✅ done4999 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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Publisher of OpenCancer?

Show your measured reliability on your README or website:

Faceabot reliability badge for OpenCancer

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