MCP HeartbeatTHE MCP OBSERVATORY
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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

40944 servers

Ordered by checks passed
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
Perigee

Positions, distances, mission facts and 3D views of objects orbiting the Earth, Moon, Mars and Sun.

Developer ToolsCode & DevOps

Outdated check140 ms15 / 22
Eviduct — Independent MCP Discovery

Read-only MCP discovery with direct network observations and no paid rankings.

Developer ToolsCode & DevOps

Responded141 ms15 / 22
aft.page

Deploy a folder, build output, or public GitHub repo to a live URL. Update, roll back.

Developer ToolsCode & DevOps

Responded141 ms15 / 22
Linear MCP by usefulapi

Search, read and create Linear issues, projects, teams and cycles.

Developer ToolsData access / search

Responded141 ms15 / 22
Financial Modeling Prep MCP Server

MCP server for Financial Modeling Prep API with 250+ financial data tools

Developer ToolsCode & DevOps

Outdated check141 ms15 / 22
yieldhunter

Risk-adjusted stablecoin yield ranks for other agents. Research only. Never holds keys or executes.

Finance & CryptoPayments & trading

Outdated check141 ms15 / 22
InjectScan

Prompt-injection scanner for agents: risk score, categories and spans for text, pages, MCP tools

Developer ToolsCode & DevOps

Outdated check141 ms15 / 22
Digital Gemology: gem identification and gemstone properties

Identify 36 gems by refractive index, birefringence, SG, pleochroism and spectrum; cut scores in 30

OtherOther

Outdated check141 ms15 / 22
DNSimple MCP by usefulapi

MCP server for DNSimple — domains, DNS zone records, availability, pricing and contacts.

Developer ToolsCode & DevOps

Responded142 ms15 / 22
Billy MCP by usefulapi

Read Billy invoices, bills, contacts, products and postings; create contacts and draft invoices.

Finance & CryptoPayments & trading

Responded142 ms15 / 22
Agent Tools MCP

32 free MCP tools for data validation, text optimization, and synthetic test data.

Developer ToolsCode & DevOps

Responded142 ms15 / 22
SCVD General Store

Evidence observatory: x402/MPP inspection, signed receipt checks and settlement attestations.

Finance & CryptoPayments & trading

Responded143 ms15 / 22
JobNimbus MCP by usefulapi

Manage JobNimbus contacts, jobs, tasks, estimates and invoices from chat.

Finance & CryptoPayments & trading

Responded143 ms15 / 22
Briox MCP by usefulapi

Read invoices, journals and accounts; create customers, items and unposted invoices in Briox.

Finance & CryptoPayments & trading

Responded143 ms15 / 22
SimplyUtils

Developer and text tools: JSON, QR codes, units, passwords, UUIDs, hashes, Base64, regex and more.

Developer ToolsCode & DevOps

Outdated check143 ms15 / 22
Nifra docs

Nifra docs, runnable examples, and API types as an MCP server for any AI assistant.

Developer ToolsCode & DevOps

Outdated check143 ms15 / 22
Digital Gemology: gemstone and diamond cut library

Gemstone and diamond cuts: ray-traced brilliance, fire and sparkle in 26 gems, 3D and faceting files

OtherOther

Outdated check143 ms15 / 22
publicdata.au

Search, filter, count and sum Australian government open data, with every version kept.

GovernmentData access / search

Outdated check143 ms15 / 22
Cellarion Wine Registry

Public wine registry and guides: search wines, grapes, regions, appellations. No account.

OtherData access / search

Outdated check144 ms15 / 22
Eventee MCP by usefulapi

Read an Eventee event's program, participants and reviews; create sessions, speakers; invite.

Developer ToolsCode & DevOps

Responded145 ms15 / 22
Bind ERP MCP by usefulapi

Read Bind ERP clients, products, inventory, invoices, orders; create prospects, clients, orders.

Finance & CryptoPayments & trading

Responded145 ms15 / 22
Frankfurter

Convert currencies and fetch blended FX rates from 50+ institutional sources.

Developer ToolsCode & DevOps

Outdated check145 ms15 / 22
NBA Prop Lab

NBA and WNBA player-prop analytics: daily board, graded track record, matchup and referee data.

Developer ToolsCode & DevOps

Outdated check145 ms15 / 22
JobsPipe

Live job postings from 30+ ATS feeds and job boards, one schema. Sign in with OAuth, or use a key.

Developer ToolsCode & DevOps

Outdated check145 ms15 / 22

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