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Is prompt-guard-mcp reliable?

Reliable (measured) Yes. Faceabot measured prompt-guard-mcp 20 times: 100% of checks succeeded, including the last 20 in a row (last check 2026-10-19 12:25 UTC). It also does the job: its real read-only task worked 11 of 11 times.

Last check: 2026-10-19 12:25 UTC · answered in 9045 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

Scans untrusted web pages, emails, or tool outputs for prompt injections and returns sanitized tex

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.1.1
Connect your agent
{
  "mcpServers": {
    "prompt-guard-mcp": {
      "url": "https://prompt-guard-72343955726.us-central1.run.app/mcp/prompt-guard"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"io.github.robertoyanguas-ops/prompt-guard-mcp"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Does the job (tested) — Faceabot asked get_agent_wallet_status to do a small read-only task 11 time(s): 11 returned a real result, the last 11 in a row. Last result: ok in 2308 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 12:25 UTC✅ ok✅ done9045 ms
2026-10-18 20:20 UTC✅ ok✅ done5732 ms
2026-10-18 07:10 UTC✅ ok✅ done5757 ms
2026-10-17 23:20 UTC✅ ok✅ done5296 ms
2026-10-17 15:10 UTC✅ ok✅ done5787 ms
2026-10-17 07:05 UTC✅ ok✅ done5150 ms
2026-10-16 23:15 UTC✅ ok✅ done4726 ms
2026-10-16 16:05 UTC✅ ok✅ done7722 ms
2026-10-16 09:05 UTC✅ ok✅ done4830 ms
2026-10-16 02:10 UTC✅ ok✅ done5250 ms
2026-10-15 19:15 UTC✅ ok✅ done5131 ms
2026-10-15 12:31 UTC✅ ok—3020 ms
2026-10-15 05:55 UTC✅ ok—3841 ms
2026-10-14 23:25 UTC✅ ok—3052 ms
2026-10-14 17:05 UTC✅ ok—7256 ms
2026-10-14 10:35 UTC✅ ok—2979 ms
2026-10-14 04:06 UTC✅ ok—8830 ms
2026-10-13 21:31 UTC✅ ok—7152 ms
2026-10-13 15:25 UTC✅ ok—7983 ms
2026-10-13 09:20 UTC✅ ok—7853 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 prompt-guard-mcp?

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Data in JSON: /api/catalog?id=io.github.robertoyanguas-ops/prompt-guard-mcp · Stop probes: POST /api/reliability/opt-out

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