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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18175 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
Bahdan Hal

Bahdan Hal software consulting: services, pricing, CV and skills, and contact requests.

Developer ToolsCode & DevOps

Responded233 ms15 / 22
ID MANDAT – Registry for AI Agents

Open registry for AI agents: check who stands behind an agent and what it may do.

Developer ToolsCode & DevOps

Responded235 ms15 / 22
IRS Mileage Rate and Per Diem

IRS mileage rates 2011-2026 (76 cents from July 2026), GSA per diem by ZIP FY2026-27, high-low.

Developer ToolsCode & DevOps

Responded237 ms15 / 22
Section 179 Deduction Calculator

Section 179 limits, 100% bonus depreciation, heavy SUV caps and asset loan cost (2025-2026, IRS).

Developer ToolsCode & DevOps

Responded238 ms15 / 22
registry-mcp — national company registries

The company registry MCP: brreg orgnr, Companies House, Bolagsverket organisationsnummer.

Developer ToolsCode & DevOps

Responded239 ms15 / 22
Paycheck Calculator

Take-home pay for 2025-2026: IRS brackets, FICA wage base and state income tax for 50 states + DC.

Developer ToolsCode & DevOps

Responded242 ms15 / 22
Cups to Grams

Cups to grams for 271 ingredients with USDA and King Arthur densities, recipe scaling, oven temps.

Developer ToolsCode & DevOps

Responded242 ms15 / 22
Car Loan Interest Deduction Calculator

2025-2028 car loan interest deduction, SALT cap, child tax credit and 2026 tax brackets (IRS).

Developer ToolsCode & DevOps

Responded244 ms15 / 22
ATSPrep

Free resume tools: ATS score, job match, bullet and LinkedIn checks, tailoring, interview prep.

Developer ToolsCode & DevOps

Responded245 ms15 / 22
OptimToken

Compare LLM API and cloud compute pricing, estimate workload costs, pick a model within budget.

Developer ToolsCode & DevOps

Responded246 ms15 / 22
tickadoo Experiences and Events

Discover and book theatre, tours, attractions, and live experiences worldwide. No API key required.

Developer ToolsCode & DevOps

Responded248 ms15 / 22
Bibelstudium MCP

Wortgetreue deutsche Bibelarbeit: Grundtext, Morphologie, Konkordanz, Querverweise

Developer ToolsCode & DevOps

Responded251 ms15 / 22
Lake Level MCP

Live US lake and reservoir water levels from USGS, USACE, CDEC, USBR and TWDB gauges.

Developer ToolsCode & DevOps

Responded252 ms15 / 22
Helfer & Profi

Free German neighborhood marketplace: search local help requests and providers by postal code.

Developer ToolsCode & DevOps

Responded256 ms15 / 22
Agent Commons

A home for any agent: inbox, public memory, job board, rooms, human help. Free, no key.

Developer ToolsCommunication & messaging

Responded258 ms15 / 22
Context Atlas

Find llms.txt, docs, MCP servers, skills and CLIs for a tech stack, for coding agents.

Developer ToolsCode & DevOps

Responded259 ms15 / 22
Boletín Claro

Subvenciones, licitaciones y boletines oficiales de España y Europa para tu IA. Gratis, sin login.

Developer ToolsCode & DevOps

Responded260 ms15 / 22
No Tax on Overtime

No tax on overtime, tips and senior deductions for 2025-2028 (OBBBA), with IRS caps and phase-outs.

Developer ToolsCode & DevOps

Responded263 ms15 / 22
BillionVerify

Email verification for AI agents: verify single or bulk emails, check credits and history.

Developer ToolsCommunication & messaging

Responded265 ms15 / 22
Laravilt

Laravilt docs, packages and plugins for agents: a Laravel admin panel on Inertia with Vue or React.

Developer ToolsCode & DevOps

Responded270 ms15 / 22
Ratevert MCP

Read-only Ratevert MCP for asset search, pair rates, and conversions.

Developer ToolsData access / search

Responded271 ms15 / 22
Subdomain Finder MCP

Passive subdomain enumeration from certificate transparency (certspotter, crt.sh) with DNS checks.

Developer ToolsCode & DevOps

Responded272 ms15 / 22
CPI Inflation Calculator

Inflation calculator with official BLS CPI 1913 to the latest month, raise vs inflation, SS COLA.

Developer ToolsCode & DevOps

Responded272 ms15 / 22
The Wyze Blog

The Wyze blog: guaranteed rent, temporary accommodation and lettings guides for UK letting agents.

Developer ToolsCode & DevOps

Responded272 ms15 / 22

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