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Is fourzerotwo reliable?

Reliable (measured) Yes. Faceabot measured fourzerotwo 28 times: 100% of checks succeeded, including the last 28 in a row (last check 2026-10-19 20:50 UTC). It also does the job: its real read-only task worked 27 of 28 times.

Last check: 2026-10-19 20:50 UTC · answered in 5302 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

400+ data APIs for agents: UK companies, property, trade, tenders, recalls, sanctions. Free tier

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.2.1 · publisher website
Connect your agent
{
  "mcpServers": {
    "data": {
      "url": "https://fourzerotwo.si/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"si.fourzerotwo/data"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Does the job (tested) — Faceabot asked search_apis to do a small read-only task 28 time(s): 27 returned a real result, the last 27 in a row. Last result: ok in 2238 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 20:50 UTC✅ ok✅ done5302 ms
2026-10-19 07:55 UTC✅ ok✅ done6471 ms
2026-10-18 15:15 UTC✅ ok✅ done7839 ms
2026-10-18 04:35 UTC✅ ok✅ done5298 ms
2026-10-17 20:35 UTC✅ ok✅ done5339 ms
2026-10-17 12:10 UTC✅ ok✅ done5008 ms
2026-10-17 04:25 UTC✅ ok✅ done5699 ms
2026-10-16 20:40 UTC✅ ok✅ done6502 ms
2026-10-16 13:31 UTC✅ ok✅ done9194 ms
2026-10-16 06:31 UTC✅ ok✅ done8396 ms
2026-10-15 23:36 UTC✅ ok✅ done7372 ms
2026-10-15 16:36 UTC✅ ok✅ done7652 ms
2026-10-15 09:56 UTC✅ ok✅ done4350 ms
2026-10-15 03:25 UTC✅ ok✅ done2747 ms
2026-10-14 20:55 UTC✅ ok✅ done8098 ms
2026-10-14 14:25 UTC✅ ok✅ done4620 ms
2026-10-14 08:00 UTC✅ ok✅ done3942 ms
2026-10-14 01:11 UTC✅ ok✅ done8669 ms
2026-10-13 19:01 UTC✅ ok✅ done8118 ms
2026-10-13 12:50 UTC✅ ok✅ done10969 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

Environment & energy Flaky · 80% over 5 checks Fails real tasks · 0/4

UK river levels and rainfall, bathing waters, flood warnings, weather, earthquakes and the GB…

MCP endpoint : https://fourzerotwo.si/mcp/v/environment · website · measurements and details
Health & medicines Reliable (measured) · 100% over 26 checks Fails real tasks · 0/26

Clinical trials, RxNorm drug lookups, FDA drug and device data, PubMed and NHS organisations.

MCP endpoint : https://fourzerotwo.si/mcp/v/health · website · measurements and details
Research papers Being measured · 50% over 2 checks Real task being tested · 0/1

arXiv, PubMed, Crossref and OpenAlex scholarly metadata.

MCP endpoint : https://fourzerotwo.si/mcp/v/research · website · measurements and details
Product safety & recalls Being measured · 50% over 2 checks Real task being tested · 0/1

UK product recalls, MHRA drug and device alerts, FSA food alerts, accident reports and US CPSC…

MCP endpoint : https://fourzerotwo.si/mcp/v/safety-recalls · website · measurements and details
Everyday agent tools Flaky · 67% over 3 checks Real task being tested · 2/2

Time zones and world business days, VAT rates and maths, currency conversion, UK business days…

MCP endpoint : https://fourzerotwo.si/mcp/v/tools · website · measurements and details

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Publisher of fourzerotwo?

Show your measured reliability on your README or website:

Faceabot reliability badge for fourzerotwo

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