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.

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40733 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
GreenCycle Compound Atlas

Read-only cannabis compound, receptor, anatomy and evidence data, every value sourced.

OtherOther

Outdated check107 ms15 / 22
Dictionary of Applied Machine Learning

Look up, search and cross-reference machine-learning terms from dictionaryofml.org.

OtherData access / search

Responded108 ms15 / 22
D7 Networks MCP by usefulapi

Read D7 Networks balance, SMS pricing and delivery status; look up numbers; send one SMS.

ProductivityData access / search

Responded108 ms15 / 22
Emendas parlamentares do Brasil

Brazilian federal budget amendments by municipality, author and recipient. Paid via Lightning.

GovernmentCode & DevOps

Responded108 ms15 / 22
CKB Pulse

Who builds on Nervos CKB, from public GitHub: projects, people, updates, DAO-funded work. Read-only.

Developer ToolsCode & DevOps

Outdated check108 ms15 / 22
LiveVariant

Build, inspect and read adaptive A/B tests. Config travels in the URL; no account or API key needed.

TravelCode & DevOps

Outdated check108 ms15 / 22
WhatConverts MCP by usefulapi

Read WhatConverts leads, calls, forms, accounts and profiles; add leads and update lead value.

Marketing & SalesData access / search

Responded109 ms15 / 22
Spike.sh MCP by usefulapi

Read Spike.sh incidents, on-call, escalations and services; acknowledge, resolve, set priority.

Developer ToolsCode & DevOps

Responded109 ms15 / 22
Schedule it MCP by usefulapi

Read Schedule it events, resources, groups and labels; create and update events and resources.

Developer ToolsCode & DevOps

Responded109 ms15 / 22
Lavenders (LAVNDR120)

Read-only facts on Lavenders (LAVNDR120): packages, prices, FAQ and the live consumer index card.

Developer ToolsCode & DevOps

Outdated check109 ms15 / 22
Naibul — agent-only board-game hall

Agent-only board-game hall: 12 verifiable games — chess, Go, backgammon, and 8-seat Werewolf.

OtherOther

Outdated check109 ms15 / 22
Sosumi

Search and read Apple developer documentation, HIG, and WWDC transcripts as Markdown.

OtherFile & docs

Outdated check109 ms15 / 22
StatusPal MCP by usefulapi

Read status-page status, services, incidents and metrics; create, update and publish incidents.

Data & AnalyticsData access / search

Responded110 ms15 / 22
Mailchimp MCP by usefulapi

Read audiences, members, campaigns and reports; add, update, tag and archive subscribers.

Marketing & SalesData access / search

Responded110 ms15 / 22
CSS SOTA

What CSS you can actually ship today, from live Baseline data and MDN browser-compat-data.

Developer ToolsCode & DevOps

Outdated check110 ms15 / 22
Clarity by Health AI

Condition-aware ingredient and product checks for agents, with evidence tiers and citations.

OtherKnowledge & memory

Outdated check110 ms15 / 22
org.snapforge/snapforge

Screenshots, PDFs and Markdown from any URL or HTML for AI agents, via the SnapForge API

Developer ToolsFile & docs

Responded111 ms15 / 22
When I Work MCP by usefulapi

Check shifts, time clock entries, time-off requests, swaps and availability, and manage shifts.

Developer ToolsCode & DevOps

Responded111 ms15 / 22
F-sąskaita MCP by usefulapi

Read invoices, expenses and PDFs; create invoices and record expenses in F-sąskaita.

Finance & CryptoPayments & trading

Responded111 ms15 / 22
Drupal MCP by usefulapi

Read and write Drupal JSON:API nodes, taxonomy terms, users and files.

Developer ToolsCode & DevOps

Responded111 ms15 / 22
ShipStatic

Deploy static websites, landing pages, and prototypes instantly. Free, no account needed.

Developer ToolsCode & DevOps

Outdated check111 ms15 / 22
Veeqo MCP by usefulapi

Read Veeqo orders, products, stock, warehouses, customers and POs; add notes, tag, set stock.

Finance & CryptoPayments & trading

Responded112 ms15 / 22
GetResponse MCP by usefulapi

Manage GetResponse contacts, campaigns, newsletters and autoresponders.

Marketing & SalesData access / search

Responded112 ms15 / 22
Web Validator by DigestSEO

Audit public webpages and supplied markup for HTML, CSS, SEO, JSON-LD, and link issues.

Developer ToolsCode & DevOps

Outdated check112 ms15 / 22

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