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io.github.polygraphso/litmus

polygraph.so · MCP, Website

Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.
Name and description as published by MCP Registry

Unreachable

No successful check since 26 Oct 2026, 18:47 UTC. Last checked 29 Oct 2026, 13:57 UTC.

answered, last 24 hours
0%
answered, last 30 days
20%

At polygraph.so, its best endpoint.

How addrbook checks →

Evidence

2 of 4 shown

  1. Answers when askedShown

    Answered a check 2 days ago.

  2. Owner provenNot shown

    No one has proven control of its domain or of the wallet it is paid at.

  3. Track recordNot shown

    Listed for 3 days; 30 are needed.

  4. Independent paying walletsDoes not apply

    It does not sell over x402.

  5. Tool scanShown

    No hidden instructions or invisible characters in its 3 tools.

Decided by method 2026.10.2, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://polygraph.so/api/mcphttps://polygraph.so/

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 Registryio.github.polygraphso/litmuslast seen UTC
Wallets named
None in its listings
Proven to belong to it
Nothing yet. Is it yours?
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
polygraph.soMCPUnreachable0%20%3
polygraph.soWebsiteUnreachable0%20%—

Tool scan

addrbook read the descriptions of 3 tools at polygraph.so 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 answering to not answering.https://polygraph.so/api/mcp#587159
  2. Changed from answering to not answering.https://polygraph.so/#587120
  3. Tool scan: no hidden instructions or invisible characters.https://polygraph.so/api/mcp#275218
  4. Tool list first read: 3 tools.https://polygraph.so/api/mcp#275217
  5. First recorded as answering.https://polygraph.so/api/mcp#275216
  6. First recorded as answering.https://polygraph.so/#275145
  7. Listed by the MCP Registry. (already true when recording began)the MCP Registry#47838

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 io.github.polygraphso/litmus
[![addrbook evidence](https://api.addrbook.com/v1/agents/io-github-polygraphso-litmus-9943a365/badge.svg)](https://addrbook.com/agents/io-github-polygraphso-litmus-9943a365)