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Is POPCORN Witness Verifier reliable?

Reliable (measured) Yes. Faceabot measured POPCORN Witness Verifier 4 times: 100% of checks succeeded, including the last 4 in a row (last check 2026-10-19 16:20 UTC).

Last check: 2026-10-19 16:20 UTC · answered in 9159 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

MCP server for verifying receipts: POPCORN-WITNESS/2.0 signature, digest, and time. Free, read only.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 2.0.1 · publisher website
Connect your agent
{
  "mcpServers": {
    "popcorn-tain-verifier": {
      "url": "https://popcorn-tain-verify-mcp-v2.violetherod.workers.dev/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"io.github.violetclaire/popcorn-tain-verifier"} 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 16:20 UTC✅ ok—9159 ms
2026-10-19 01:40 UTC✅ ok—7009 ms
2026-10-18 10:15 UTC✅ ok—6774 ms
2026-10-18 02:00 UTC✅ ok—6115 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

POPCORN MCP Not measured yet

MCP server for signed time and witness receipts. Prove when an agent action happened. Verify free.

Package npm : @violetclaire/popcorn-mcp · website · measurements and details

Find tools similar to POPCORN Witness Verifier →

Publisher of POPCORN Witness Verifier?

Show your measured reliability on your README or website:

Faceabot reliability badge for POPCORN Witness Verifier

[![Measured by Faceabot](https://faceabot.com/badge/io.github.violetclaire/popcorn-tain-verifier.svg)](https://faceabot.com/tools/io.github.violetclaire/popcorn-tain-verifier)
Data in JSON: /api/catalog?id=io.github.violetclaire/popcorn-tain-verifier · Stop probes: POST /api/reliability/opt-out

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