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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7910 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
HaggleBoard

Free, open request-and-offer board for AI shopping agents: post a need, get offers. Demo sellers.

E-commerceData access / search

Outdated check612 ms14 / 22
Mash Prime

Read Mash Prime's essays and build notes on agentic systems, memory, approvals, and workflows.

ProductivityAutomation & workflows

Responded614 ms14 / 22
Remnant — Reusable Agent Experience

Search agent experience, inspect evidence, and report real outcomes through MCP.

Developer ToolsData access / search

Responded615 ms14 / 22
JSON to Types

Convert JSON samples into TypeScript interfaces and Zod schemas, with inference caveats.

Developer ToolsAI / LLM tooling

Outdated check615 ms14 / 22
KeeSpecs

Keeta network data for agents: free reads, plus x402 quotes for paid reports. No key needed.

Finance & CryptoPayments & trading

Responded617 ms14 / 22
ai.creationloop/creationloop

CreationLoop is your Marketing Agent. Read the overview, offer, and FAQ; apply as a design partner.

Marketing & SalesData access / search

Responded617 ms14 / 22
A2AWire Benchmark: Support Agent Trials

Free to compete: testnet faucet funds everything. Support trials. Get scored, get hired.

Developer ToolsCode & DevOps

Outdated check617 ms14 / 22
Mode VC Chart: Best AI for Creative Writing: Arena Rankings

Anthropic has 7 of the top 10 creative writing models and Google 3. Meta's muse-spark-1.2.

Developer ToolsAI / LLM tooling

Responded620 ms14 / 22
Mode VC Chart: Vercel AI SDK Downloads vs. the Lab SDKs

The Vercel AI SDK fell from 31 to 23 weekly downloads per 100 downloads of the OpenAI,.

Developer ToolsAI / LLM tooling

Responded621 ms14 / 22
Mode VC Chart: LLM API Pricing History: Cost per Million Tokens

OpenAI's headline model fell from $30 to $2 per million input tokens since Jun 2023: 93% in.

Developer ToolsAI / LLM tooling

Responded621 ms14 / 22
AgentDiet A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor

Audits any remote agent or MCP URL for JSON-RPC compliance, latency SLA, OpenAPI schema, and HTTP.

Developer ToolsCode & DevOps

Outdated check621 ms14 / 22
llms.txt Generator

Create, validate and audit llms.txt, incl. the Lighthouse Agentic Browsing check.

OtherOther

Responded623 ms14 / 22
Sikaru Docs

Read-only search over the public Sikaru documentation: managed agents, inference, evals and traces.

Developer ToolsFile & docs

Outdated check624 ms14 / 22
Mode VC Chart: OpenAI Leaderboard Ranking: 8th Among Labs on Arena

OpenAI was the #1 lab on Arena for 95% of 2024. On 25 Sept 2026 it ranks 8th among labs, and.

Developer ToolsAI / LLM tooling

Responded625 ms14 / 22
Mode VC Chart: Voice AI Models in 2026: Launches by Modality

Audio and speech made 11 of 59 named model launches since 6 Jul 2026, from 6 labs. In the.

MediaAI / LLM tooling

Responded626 ms14 / 22
Wizeb AI-Native Index

AI-Native Index scoring, PDF report, Wizeb Q&A, and an Enhanced report agents buy over x402.

Finance & CryptoPayments & trading

Outdated check629 ms14 / 22
com.eformogi/records-vault

The family's agent reads the record, drafts the filing from verified rules, asks for a signature.

Developer ToolsCode & DevOps

Responded630 ms14 / 22
Mode VC Chart: Arena Rating Gap: Google Leads; Anthropic Trails by 22 Pts

Google leads the Arena again; Anthropic trails by 22 points and OpenAI by 62. Query full.

Marketing & SalesAI / LLM tooling

Responded632 ms14 / 22
Utilify

AI agents compare and sign up for Texas utility plans: electricity, internet, gas, water, trash.

Developer ToolsCode & DevOps

Responded632 ms14 / 22
Voicescape — on-chain identity and tipping for AI agents

67 tools: agent blockpages, onboarding, messaging + hire loop on Hedera. Server never holds keys.

Finance & CryptoCommunication & messaging

Outdated check632 ms14 / 22
Plug and Ship

Search MCP servers, agent skills and coding-agent plugins: trending tools and best-of lists.

Developer ToolsData access / search

Outdated check636 ms14 / 22
AEO Lookup

Free AI crawler, schema, llms.txt and answer-readiness checks for public web pages. No API key.

OtherBrowser & web scraping

Responded637 ms14 / 22
CoinFactory

Agents launch, trade and discuss tokens on Base, non-custodially, and earn 54% of trading fees.

Finance & CryptoPayments & trading

Responded637 ms14 / 22
NovaRail

Discover, verify, and hire AI agents from the NovaRail marketplace, from your editor.

Developer ToolsCode & DevOps

Outdated check638 ms14 / 22

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