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

348 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
Biohacking Kompakt

Evidence-rated German database of supplements, peptides and longevity methods, plus podcast.

MediaDatabase

Responded105 ms15 / 22
Discord Timestamp Generator

Make Discord <t:unix:F> timestamp codes from any date and timezone; decode Discord snowflake IDs.

Data & AnalyticsDatabase

Responded122 ms15 / 22
run.zero

Deploy apps, APIs and Postgres from your AI agent. EU PaaS hosted in Germany, OAuth sign-in.

Developer ToolsDatabase

Responded173 ms15 / 22
Homespun

Deploy a multi-user web app from your agent: hosting, auth, database, and permissions.

Developer ToolsDatabase

Responded189 ms15 / 22
NicheDB

Sources in, feeds out: an open, ever-growing database of real-time public data, enriched.

Developer ToolsDatabase

Responded438 ms15 / 22
Quadratic

AI access to Quadratic spreadsheets: open files, run Python/SQL, query connected databases.

Developer ToolsDatabase

Responded707 ms15 / 22
GoSQLX

SQL validation, formatting, parsing, metadata extraction, linting, and security analysis.

Developer ToolsCode & DevOps

Responded795 ms15 / 22
Census MCP by usefulapi

List reverse-ETL sources, destinations, models, syncs and runs; trigger syncs into SaaS tools.

GovernmentData access / search

Outdated check53 ms14 / 22
Knack MCP by usefulapi

Read, create, update and delete records; inspect objects, fields and schema in your Knack database.

Developer ToolsDatabase

Responded56 ms14 / 22
Extensiv MCP by usefulapi

Read Extensiv warehouse records, create outbound orders and cancel eligible orders.

Data & AnalyticsData access / search

Responded61 ms14 / 22
Dataset Join & Merge

Join two lists of JSON rows on a key, like SQL or VLOOKUP: left, inner, full, anti joins, union.

Developer ToolsCode & DevOps

Responded122 ms14 / 22
Veto — SQL Safety & Cost Oracle

Deterministic safety, correctness & cost gate that vets Postgres SQL before your AI agent runs it.

Developer ToolsDatabase

Responded127 ms14 / 22
SQLGuard — permission before production writes

AI agents need permission before production SQL writes. Pilot $100 · Gateway $299. Lint≠authorize.

Developer ToolsDatabase

Outdated check420 ms14 / 22
Lancelot

An MCP server for search and retrieval over a local LanceDB database

Developer ToolsDatabase

Responded435 ms14 / 22
io.github.timescale/pg-aiguide

Comprehensive PostgreSQL documentation and best practices, including ecosystem tools

Developer ToolsDatabase

Responded454 ms14 / 22
Open Quality

Open healthcare quality measures: CQL, SQL and FHIR with provenance and known issues

HealthcareDatabase

Responded468 ms14 / 22
Go Vulnerability Database Tracker — buy per-query in-session (govulnwatch)

Go vulns: CVEs per module, fixed versions. $0.01/query. Be born in one call — free testnet funds.

SecurityDatabase

Responded620 ms14 / 22
io.github.cyanheads/ensembl-mcp-server

Look up genes, sequences, variants, homologs, and cross-database xrefs from Ensembl REST.

Developer ToolsData access / search

Responded927 ms14 / 22
io.github.cyanheads/usda-mcp-server

Search foods, compare nutrients, and look up the full USDA FoodData Central database.

Developer ToolsData access / search

Responded971 ms14 / 22
massa

Massa de teste brasileira válida: CPF, CNPJ, cartão, conta e mais, em CSV, JSON, SQL ou Excel.

Developer ToolsFile & docs

Responded1010 ms14 / 22
io.github.cyanheads/ilostat-mcp-server

Search ILOSTAT labour indicators, query and compare series, build country profiles, run SQL.

Developer ToolsCode & DevOps

Responded1048 ms14 / 22
Health Canada Drugs

Health Canada Drug Product Database (fleet #522).

Developer ToolsDatabase

Responded124 ms14 / 22
Guidetopharmacology

IUPHAR/BPS Guide to PHARMACOLOGY (GtoPdb) MCP — BYO key. Expert-curated pharmacology database of…

Developer ToolsDatabase

Responded124 ms14 / 22
Historical Baseball

historical-baseball -- MLB history from Retrosheet game logs and the SABR Lahman Baseball Database…

Developer ToolsDatabase

Responded135 ms14 / 22

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