MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

Connect your agent

1052 servers

Ordered by checks passedClear filters
Dated server measurements. The status describes the last probe or a listed authentication requirement. Checks that have not been measured are not failures. Open a server to inspect the evidence.
Server / capabilityLast probeMedian latencyChecks passedLast checked
Openiban

OpenIBAN MCP — validate an IBAN's checksum + bank code and resolve the bank name / BIC / city.…

Developer ToolsCode & DevOps

Outdated check117 ms13 / 22
Maine Code

Maine Revised Statutes — state statutes by citation.

LegalCode & DevOps

Outdated check117 ms13 / 22
Zippopotam

Zippopotam MCP — wraps Zippopotam.us ZIP/postal code API (free, no auth)

Developer ToolsCode & DevOps

Outdated check119 ms13 / 22
Ohio Code

Ohio Revised Code — state statutes by citation.

LegalCode & DevOps

Outdated check119 ms13 / 22
Utah Code

Utah Code — state statutes by citation, plus topic search.

LegalCode & DevOps

Outdated check120 ms13 / 22
Texas Code

Texas Statutes — state statutes by citation.

LegalCode & DevOps

Outdated check121 ms13 / 22
Superhero

Superhero MCP — wraps akabab.github.io/superhero-api (free, no auth)

Developer ToolsCode & DevOps

Outdated check123 ms13 / 22
W3c

W3C MCP — web-standards lookup over w3c/browser-specs (GitHub, CF-reachable). ~800 current web…

Developer ToolsCode & DevOps

Outdated check126 ms13 / 22
Oregon Code

Oregon Revised Statutes — state statutes by citation.

LegalCode & DevOps

Outdated check129 ms13 / 22
Oklahoma Code

Oklahoma Statutes — state statutes by citation, full-text topic search, amendment history, and…

LegalCode & DevOps

Outdated check136 ms13 / 22
South Carolina Code

South Carolina Code of Laws — state statutes by citation.

LegalCode & DevOps

Outdated check137 ms13 / 22
Virginia Code

Code of Virginia — state statutes by citation.

LegalCode & DevOps

Outdated check141 ms13 / 22
Virgin Islands Code

Virgin Islands Code (V.I.C.) — US Virgin Islands statutes, 2026 edition: full section text by…

LegalCode & DevOps

Outdated check145 ms13 / 22
Responded152 ms13 / 22
FreeQrly

Free QR code generation via MCP: no-key static codes plus authenticated dynamic codes.

Developer ToolsCode & DevOps

Responded158 ms13 / 22
Research Chain

One call, one paper: everything openly available around it — full text, license, datasets, code…

Developer ToolsCode & DevOps

Outdated check173 ms13 / 22
Tldr Pages

tldr-pages MCP — fetched from the canonical github repo.

Developer ToolsCode & DevOps

Outdated check176 ms13 / 22
Ucc Liens

UCC Liens — business-debtor UCC (Uniform Commercial Code) financing statements for Colorado…

Developer ToolsCode & DevOps

Outdated check197 ms13 / 22
Sdmx Structure

SDMX Structure MCP — dataflow dimensions and code lists for any SDMX 2.1 registry: Eurostat, OECD…

Developer ToolsCode & DevOps

Outdated check308 ms13 / 22
Uk Trade Tariff

UK Integrated Online Tariff from HMRC's trade-tariff service: look up a UK commodity code, its…

Developer ToolsData access / search

Outdated check314 ms13 / 22
Qrcode

QR Code MCP — wraps api.qrserver.com (free, no auth)

Developer ToolsCode & DevOps

Outdated check318 ms13 / 22
RogerThat

Real-time chat hub for AI agents — Claude Code, Cursor, Cline, Codex over MCP or REST.

Developer ToolsCode & DevOps

Responded457 ms13 / 22
Apuchat

Real-time chat for AI agents. Claude Code, Cursor, Cline and Codex join channels over MCP.

Developer ToolsCode & DevOps

Responded475 ms13 / 22
Rhode Island Code

Rhode Island General Laws — state statutes by citation.

LegalCode & DevOps

Outdated check726 ms13 / 22

Automated measurements. Not a rating. Unmeasured checks are not failures. How to read the evidence