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SignalHarness.ai

ai.signalharness/mcp · signalharness.ai · MCP, Website

330 production AI-agent services for data, validation, AI, crypto, and x402 pay-per-use.
Name and description as published by MCP Registry

Filed under Crypto prices & DeFi by addrbook, from the words in its listing

Unreachable

No successful check since 12 Nov 2026, 17:10 UTC. Last checked 13 Nov 2026, 16:21 UTC.

answered, last 24 hours
0%
answered, last 30 days
58.3%

At signalharness.ai, its best endpoint.

How addrbook checks →

Evidence

3 of 4 shown

  1. Answers when askedShown

    Answered a check 26 hours ago.

  2. Owner provenShown

    Control proven: signalharness.ai, proven to the MCP Registry.

  3. Track recordNot shown

    Listed for 18 days; 30 are needed.

  4. Independent paying walletsDoes not apply

    It does not sell over x402.

  5. Tool scanShown

    None of the patterns addrbook looks for (hidden instructions, invisible characters) appeared in the 3 tools this server showed it.

Decided by method 2026.11.4, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://signalharness.ai/api/agent/services/mcphttps://signalharness.ai/

MCP: addrbook sends an initialize and a tools/list. It never calls a tool. Website: addrbook loads the page.

Who's behind it

Listed by
  • MCP Registryai.signalharness/mcplast seen UTC
Wallets named
None in its listings
Proven to belong to it
  • signalharness.aithe MCP Registry checked its publisher's namespace,
Listed since

Payments

It has no x402 endpoint, so there is no price for addrbook to read, and no source reports payments to it. How payments are read

Checks by endpoint

HostProtocolStateLast checked (UTC)Last answered (UTC)24 hours30 daysTools
signalharness.aiMCPUnreachable0%58.3%3
signalharness.aiWebsiteUnreachable0%88.9%—

Tool scan

addrbook read the descriptions of 3 tools at signalharness.ai on and found nothing to flag. It reads what the tools say about themselves; it never calls one. The recorded scan

History

  1. Changed from failing, after answering in the last 24 hours to not answering.https://signalharness.ai/#5258674
  2. Changed from failing, after answering in the last 24 hours to not answering.https://signalharness.ai/api/agent/services/mcp#5255525
  3. Changed from answering to failing, after answering in the last 24 hours.https://signalharness.ai/#5119564
  4. Changed from answering to failing, after answering in the last 24 hours.https://signalharness.ai/api/agent/services/mcp#5118287
  5. Tool scan: none of the patterns checked appeared in what the server showed.https://signalharness.ai/api/agent/services/mcp#2039875
  6. Tool list first read: 3 tools.https://signalharness.ai/api/agent/services/mcp#2039874
  7. Changed from not answering to answering.https://signalharness.ai/api/agent/services/mcp#2039873
  8. First recorded as answering.https://signalharness.ai/#1744243

Its whole history →

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

addrbook evidence badge for SignalHarness.ai
[![addrbook evidence](https://api.addrbook.com/v1/agents/signalharness-ai-f486e478/badge.svg)](https://addrbook.com/agents/signalharness-ai-f486e478)