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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18500 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
io.github.shoggi211/jsonaut

Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid.

Developer ToolsCode & DevOps

Responded72 ms14 / 22
io.github.frinto/vera-commons

Provider-neutral commons where AI agents register and exchange ed25519-signed messages.

Developer ToolsCode & DevOps

Responded72 ms14 / 22
rows.page

Push CSV, JSON, JSONL or Parquet from your agent and get a link a human can explore.

Developer ToolsFile & docs

Responded72 ms14 / 22
Agent Daily

Live health of 65 agent APIs/MCPs plus a 15-min LLM leaderboard; recommend(task) picks a provider.

Developer ToolsCode & DevOps

Responded73 ms14 / 22
Agentic Commerce Tools

7 free tools: MCP health scans, AI-readiness scores, llms.txt generator, glossary, indexes.

Developer ToolsCode & DevOps

Responded73 ms14 / 22
yasashii.org

Human-verified Easy Japanese versions of Japanese administrative and disaster-preparedness info.

Developer ToolsCode & DevOps

Responded73 ms14 / 22
TheSkillVault

Search and fetch vibe-coding Agent Skills (SKILL.md files) and prompts from TheSkillVault library.

Developer ToolsData access / search

Responded73 ms14 / 22
HoShy

Search Rakuten Ichiba products and compare prices via Claude. Zero setup, no API key needed.

Developer ToolsCode & DevOps

Responded73 ms14 / 22
io.github.himanshusaleria/events-mcp

Discover tech events, startup meetups, AI events across 8 cities — including hidden ones.

Developer ToolsCode & DevOps

Responded73 ms14 / 22
WebUpCheck — DNS, Website & Provider Diagnostics

DNS comparison, Claude and cloud components/incidents, and website diagnostics. Free; no API key.

Developer ToolsAI / LLM tooling

Responded73 ms14 / 22
Date Math

Date/time math for agents: business days, holidays, time zones, cron, RRULE. 25 free calls/day.

Developer ToolsCode & DevOps

Responded74 ms14 / 22
io.github.f-tiger/hvac-btu-heat-klimaanlage

getecoback.com: humidity decisions, BTU sizing, window seals, running costs and dew point (DE/EU).

Developer ToolsCode & DevOps

Responded74 ms14 / 22
bot.yeehaw/events

Agent-first Austin events concierge — fresh, sourced answers to what's happening in Austin.

Developer ToolsCode & DevOps

Responded74 ms14 / 22
McpStamp Bill of Sale

Bills of sale for vehicles, equipment or phones: drafts and signing copies with signature lines.

Developer ToolsCode & DevOps

Responded74 ms14 / 22
io.github.f-tiger/agiscorecard-web3-protocol

Read dated x402, ERC-8004 and token-interface profiles with official sources and freshness limits.

Developer ToolsCode & DevOps

Responded75 ms14 / 22
SubcueAI

Public read-only MCP for SubcueAI: live pricing, latest desktop version, overview and FAQ.

Developer ToolsCode & DevOps

Responded76 ms14 / 22
io.github.VidhiJav/myrsu-mcp

Concentration risk analysis for tech workers with RSU comp — global (US/IN/CA/UK/EU/AU).

Developer ToolsCode & DevOps

Responded76 ms14 / 22
402xAgent

Check an x402 endpoint before your agent pays: pay, skip or recheck, with Ed25519-signed receipts.

Developer ToolsCode & DevOps

Responded76 ms14 / 22
getresearch: the Data Research door

The record's research page on a listed company: no analyst, no rating, no view. Signed, receipted.

Developer ToolsCode & DevOps

Responded76 ms14 / 22
agent-web — URL to LLM-ready markdown: a polite, robots-respecting web page reader (free)

URL to clean markdown for LLMs: a polite, robots.txt-respecting web reader. Free, no API key

Developer ToolsFile & docs

Responded77 ms14 / 22
drxinfra knowledge base for Directum RX

Directum RX ops: find errors by log line, articles, sizing calculators, versions, checklists

Developer ToolsKnowledge & memory

Responded77 ms14 / 22
Bible by Midvash

Free, no-key Bible MCP server — 86 translations in 32 languages, from any MCP client.

Developer ToolsCode & DevOps

Responded77 ms14 / 22
io.github.inity13/scenariosim-mcp

Deterministic what-if & scenario simulation for AI agents: projections, sensitivity & break-even.

Developer ToolsCode & DevOps

Responded77 ms14 / 22
ScreenSeal

Sanctions screening for AI agents: check a name against OFAC and EU lists. Free during launch.

Developer ToolsCode & DevOps

Responded77 ms14 / 22

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