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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4139 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.docracy1/chasa

AI invoice follow-up emails for freelancers. Draft-only, never sends for you.

Finance & CryptoPayments & trading

Not measuredNot measured5 / 22
io.github.gdietsch/trading-signals-mcp

Trading tools for agents: AI trade brief, pre-trade check, event gate, insider buys. Remote or x402

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.gigshow/decker

Deterministic market-state engine for trading agents — state, gate, coordinates, with receipts.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.grazy88/midwest-legal-docs

Legal-form catalog, search, and checkout for AI agents. Document prep only; not a law firm.

LegalPayments & trading

Requires authOutdated checkNot measured5 / 22
io.github.hostkey-cloud-ru/mcp-server-ru

MCP server for Hostkey .ru (InvAPI): servers, power, order, DNS, S3, billing

Developer ToolsPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.hostkey-cloud/mcp-server

MCP server for Hostkey .com (InvAPI): servers, power, order, DNS, S3, billing

Developer ToolsPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.imsrvstv/fixledger-mcp

Free <50ms Peek-Before-Pay error-to-fix & breaking-change oracle (MCP + x402 Base USDC).

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.Infinihash/infinihash-kyt-mcp

Screen crypto wallets vs OFAC SDN + threat intel; pre-payment checks, signed receipts; SAR drafts

Finance & CryptoPayments & trading

Requires authNot measured5 / 22
io.github.invoicepdfs/mcp

Render invoices and credit notes as PDFs, and check them against EN 16931 e-invoicing rules.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.javyxx/xestando

Spanish SME suite: VeriFactu invoices, time clock, e-sign. AI drafts; you approve.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22
io.github.JessieJanie/skim402

Clean markdown and structured web data. Free card API key; wallet/x402 pay-per-call optional.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.jink9428-source/smartdocs-mcp

Korean export docs: agents create invoice & packing list drafts via OAuth.

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured5 / 22
io.github.jyswee/analyga

Agent-first analytics: stats, events, sessions, funnels, ingest, websites & billing.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.jyswee/gpusmarket

Rent real GPUs from the terminal. Per-second billing, $0.50 minimum. stdio MCP server.

Developer ToolsPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.lonniev/optionality-mcp

Optionality — AI-judged options trading drill, Tollbooth-monetized MCP server

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured5 / 22
io.github.Massed-Compute/mcp

Massed Compute MCP — GPU inventory, VM lifecycle, billing, SSH keys, and setup recipes.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.MLTCorp/convertfilefast

Convert files, run PDF/image tools, create billing links, and report feedback.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.mrlarryjohnson111/polymarket-mcp-server

Live Polymarket data for agents: markets, insider-scored whale trades, leaderboards, wallet P&L

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.nexus-mcp-infra/onchain-activity-index

DeFi Protocol Activity Index -- quantitative on-chain activity metric from DefiLlama data

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured5 / 22
io.github.nexus-mcp-infra/x402-receipt-verifier

Audits NEXUS's own x402 payment logs against its own delivery logs and issues a signed proof-of-deli

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured5 / 22
io.github.pairsync/pairsync

Read-only MCP access to nightly pairs trading cointegration statistics for compatible AI clients.

Data & AnalyticsPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.physics-star-cat/databutler-us-rates

US federal 2026 tax brackets, standard deductions, payroll and retirement limits, sourced.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22
io.github.quicknode/mcp

Manage your blockchain infrastructure across 80+ chains with your agents.

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured5 / 22
io.github.Steveser1989/opc-mcp-server

OPC Suite — CRM, sales, inventory, accounting, HRM, payroll, claims, projects from any AI agent.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22

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