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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1465 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
PrismPoster Creator Tools

Social media frame sizes with sourced safe areas, plus aspect-ratio, bitrate and subtitle tools.

Marketing & SalesData access / search

Outdated check552 ms15 / 22
Hoplix Print on Demand

Print-on-demand: browse products, create campaigns with your designs, quote, order and track.

Marketing & SalesData access / search

Outdated check617 ms15 / 22
ProductClank

Boost posts and launch community growth campaigns from your AI assistant. OAuth, credit-billed.

Marketing & SalesData access / search

Outdated check634 ms15 / 22
Hermoso

AI marketing agent and AI ad generator: 1195 tools, usable alone. No model markup on Starter and up.

Marketing & SalesCode & DevOps

Outdated check849 ms15 / 22
LeadMarina

Verified local-business leads: search by niche and US city, export to Close, GoHighLevel or Sheets.

Marketing & SalesData access / search

Outdated check849 ms15 / 22
Hermoso: Social Media Manager

AI marketing agent for social: post, schedule and answer comments and DMs across 15 channels.

Marketing & SalesCode & DevOps

Responded1051 ms15 / 22
Mailrith Email Marketing

Manage Subscribers, Broadcasts, Sequences, Automations, and reporting in Mailrith.

Marketing & SalesAutomation & workflows

Outdated check1069 ms15 / 22
Nebula - AI-first B2B digital marketing, Mumbai

Ask Nebula (Mumbai) about AI-first B2B digital marketing: services, sectors, GEO/AEO Answers, blogs.

Marketing & SalesData access / search

Outdated check1408 ms15 / 22
SEO·AEO·GEO

Audit a page for Google and AI search (ChatGPT, Claude, Perplexity); get a fix pack to apply.

Marketing & SalesAI / LLM tooling

Outdated check4290 ms15 / 22
Referrals.com MCP by usefulapi

Read brands, campaigns and stats; create or update brands and campaigns in Referrals.com.

Marketing & SalesData access / search

Outdated check51 ms14 / 22
Steady MCP by usefulapi

Read publication income, plans and subscriptions; list newsletter subscribers in Steady.

Marketing & SalesPayments & trading

Outdated check52 ms14 / 22
ReferralHero MCP by usefulapi

Read ReferralHero campaigns, subscribers, referrals and rewards; add subscribers and points.

Marketing & SalesData access / search

Outdated check53 ms14 / 22
Viral Loops MCP by usefulapi

Read campaign stats, participants, referrals, ranks and rewards in Viral Loops.

Marketing & SalesData access / search

Outdated check54 ms14 / 22
Taggun MCP by usefulapi

Scan receipts with Taggun OCR from a URL or file and read receipt-validation campaigns.

Marketing & SalesData access / search

Outdated check54 ms14 / 22
Method CRM MCP by usefulapi

Query Method CRM customers, leads, activities and invoices; create and update records.

Marketing & SalesPayments & trading

Outdated check54 ms14 / 22
Workiz MCP by usefulapi

Manage Workiz jobs and leads: create, update, assign team members and convert leads to jobs.

Marketing & SalesData access / search

Outdated check55 ms14 / 22
SalesRabbit MCP by usefulapi

Read leads, statuses, users and org units; create and update leads in SalesRabbit.

Marketing & SalesData access / search

Outdated check55 ms14 / 22
Vtiger MCP by usefulapi

Search, read, create and update Vtiger CRM leads, contacts, deals, cases and more; tag records.

Marketing & SalesData access / search

Outdated check56 ms14 / 22
smsmode MCP by usefulapi

Read smsmode balance, messages, replies, campaigns and usage; send SMS to up to 10 numbers.

Marketing & SalesCommunication & messaging

Outdated check57 ms14 / 22
SendGrid MCP by usefulapi

Send email and read templates, marketing contacts, lists, stats, bounces and unsubscribes.

Marketing & SalesCommunication & messaging

Outdated check57 ms14 / 22
Sarbacane MCP by usefulapi

Read Sarbacane campaigns, stats, lists and blacklists; manage contacts and draft email campaigns.

Marketing & SalesCommunication & messaging

Outdated check57 ms14 / 22
MyOnlineStore MCP by usefulapi

Read orders, articles, customers, discount codes and newsletter subscribers in MyOnlineStore.

Marketing & SalesData access / search

Outdated check57 ms14 / 22
Mailchimp MCP by usefulapi

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

Marketing & SalesData access / search

Outdated check57 ms14 / 22
Teamgate MCP by usefulapi

Manage Teamgate CRM leads, people, companies, deals, activities and notes.

Marketing & SalesData access / search

Outdated check58 ms14 / 22

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