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

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Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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18150 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
Package Intel MCP

Package intelligence for AI agents across npm, PyPI, crates.io and deps.dev. No API keys.

Developer ToolsCode & DevOps

Responded83 ms14 / 22
Ryan Lindsey

Ryan Lindsey's professional corpus, exposed as MCP tools.

Developer ToolsCode & DevOps

Responded83 ms14 / 22
UNPKG

Live npm and UNPKG data for AI agents: resolution, audits, import maps, malware/CVE checks.

SecurityCode & DevOps

Responded83 ms14 / 22
Nummerschilderen.com shop advisor

Search paint-by-number kits, get size and price advice for your own photo, shop info. No login.

MediaCode & DevOps

Outdated check83 ms14 / 22
ComputeFirst

Free deterministic tools for math, data transforms, dates, text, statistics, finance, and units.

Data & AnalyticsCode & DevOps

Outdated check83 ms14 / 22
CN HotRank

Real-time trending from major Chinese platforms (Weibo, Douyin, Baidu, Zhihu).

Developer ToolsCode & DevOps

Responded84 ms14 / 22
Aave MCP

Official Aave MCP for V3 and V4 markets, positions, governance, and transaction preparation.

Developer ToolsCode & DevOps

Responded84 ms14 / 22
io.github.agent-blueprint/free-blueprints

Two sample multi-agent blueprints over MCP, no signup. Main server: agentblueprint.ai/mcp

Developer ToolsCode & DevOps

Responded85 ms14 / 22
Sponsor Finder

Check whether a company holds a UK or Netherlands work-visa sponsorship licence.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
Lab4U

Lab4U (Russia): pick lab tests for a goal or a doctor's list and build a cart on lab4u.ru

Developer ToolsCode & DevOps

Responded85 ms14 / 22
Stackduke Radar

Read-only answers about tool changes in the public MCP servers on Stackduke's tracker. No sign-in.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
ClaraConverts

Install Clara, an AI agent website visitors talk to by voice or text. Free trial, no card.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
Agent Standings check

Live status and 30-day reliability of public MCP servers, from independent hourly probes.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
io.github.f-tiger/agiscorecard-web3-evidence

Review agent task evidence with sample deduplication, version filters and uncertainty intervals.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
io.github.f-tiger/agiscorecard-web3-disclosures

Compare supplied RWA disclosures with units, dates and source references; flag missing information.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
io.github.f-tiger/agiscorecard-web3-compute

Compare GPU workload costs per accepted output, including setup, storage, egress and failed work.

Developer ToolsCode & DevOps

Responded85 ms14 / 22
Business Agent OS

A free, read-only remote MCP server with templates for a file-based business operating system.

Developer ToolsCode & DevOps

Responded86 ms14 / 22
XGuard Live

Read current software facts with primary-source evidence and verification timestamps.

Developer ToolsCode & DevOps

Outdated check86 ms14 / 22
web3ctx

Version-true web3 docs, ABIs and human-validated integration recipes over MCP.

Developer ToolsCode & DevOps

Outdated check86 ms14 / 22
Pixel Agent

Convert images to PNG, JPEG, WebP, or AVIF through one public remote MCP tool.

MediaCode & DevOps

Outdated check86 ms14 / 22
SF Muni Real-Time Transit

Real-time SF Muni departures, routes, alerts, vehicle positions, and schedules.

Developer ToolsCode & DevOps

Responded87 ms14 / 22
BART Real-Time Transit

Real-time BART departures, trip planning, fares, stations, and advisories.

Developer ToolsCode & DevOps

Responded87 ms14 / 22
io.github.paxton888/basecite

Tenant-scoped evidence intake and controlled AI context over MCP.

Real Estate & PropertyCode & DevOps

Responded87 ms14 / 22
HTTP 402 AI Tollbooth

Free MCP troubleshooting-preview tools; purchases stay human-directed.

Developer ToolsCode & DevOps

Responded87 ms14 / 22

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