Connection check
verified live · 20h ago
agent-reliability-scores
Before you pay an endpoint you cannot vouch for: credit grade, drift and preflight.
Tools
7
GitHub stars
—
Installs / wk
—
Licence
—
Transport
streamable-http
Last checked
20h ago
Tools & capabilities
7 toolsRead from the running server on 20h ago.
mcpfax_endpoint_credit_score
read-only
endpoint*
Creditworthiness grade for one x402 endpoint or MCP server: letter grade A-E (or NR when unrated), a 0-1000 score, per-component subscores, a confidence level, flags, and the dated… Creditworthiness grade for one x402 endpoint or MCP server: letter grade A-E (or NR when unrated), a 0-1000 score, per-component subscores, a confidence level, flags, and the dated evidence each figure rests on. Use this before trusting or paying an unfamiliar endpoint. The grade ranks observed risk; it is not a calibrated probability of failure, not validated over any forward horizon, and not a security audit. Coverage is young: the response carries archive_coverage (measured archive span), most listings grade NR, and payer-concentration risk is reported as "not rated" until a listing's own payment record clears the published coverage floor. Costs $0.002 USDC per call via x402 on Base.
mcpfax_endpoint_revenue_estimate
read-only
endpoint*
Observed on-chain revenue signals for one listing: total USDC inflow, how many distinct payers, the modal transfer size, payment rate, 7- and 30-day trend windows, and where it sit… Observed on-chain revenue signals for one listing: total USDC inflow, how many distinct payers, the modal transfer size, payment rate, 7- and 30-day trend windows, and where it sits in its cohort by percentile. Use this to size a seller's real traction. Inflow is observed on-chain and is not proven to be x402 sales revenue. Trend windows are only as wide as the wallet's real scanned span, which the response reports as trends.scanned_days with per-window backed-by-scan flags; a 30-day window is not yet backed by 30 days of scanning. Costs $0.01 USDC per call via x402 on Base.
mcpfax_integration_drift
read-only
sincesubjects*
What changed under an x402 endpoint or MCP server you have ALREADY integrated: payTo rotations, price, asset and network changes, terms added or removed, and tool-schema changes. T… What changed under an x402 endpoint or MCP server you have ALREADY integrated: payTo rotations, price, asset and network changes, terms added or removed, and tool-schema changes. This is not a discovery tool and will not help you choose a server; it tells you whether the one you wired in still matches what you wired in. Pass up to 50 subjects and the `since` watermark returned by your last call, and you receive only what changed after it plus a fresh watermark, so repeat checks stay cheap. A subject with no changes is reported as verified-unchanged with the date that is true as of — that is a real answer and is billed. A subject MCPFax has never observed is named in `not_observed` and given NO verdict, because reporting "no changes" about something we never watched is indistinguishable from a genuine all-clear. The watermark is the last date MCPFax actually observed, never the current clock, so no window is skipped between sweeps. Coverage is young and every response carries its archive span. Costs $0.002 USDC per call via x402 on Base.
mcpfax_payer_wallet_profile
read-only
address*
Know-your-agent profile for a paying wallet: how many distinct services it pays, total observed spend, whether the address is a contract or an externally owned account, and coverag… Know-your-agent profile for a paying wallet: how many distinct services it pays, total observed spend, whether the address is a contract or an externally owned account, and coverage-gated screening signals. Use this to vet a counterparty that is paying you. Screening signals are withheld with status "not_rated" until the observed record for the address clears the published coverage floor (14 days, 20 payments); the measured graph facts are always returned and carry no inference about intent. Costs $0.002 USDC per call via x402 on Base.
mcpfax_payto_change_feed
read-only
since
Chronological feed of rating actions since a date: grade upgrades and downgrades, payTo wallet changes (a seller redirecting payment), listing removals, and returns. Use this to mo… Chronological feed of rating actions since a date: grade upgrades and downgrades, payTo wallet changes (a seller redirecting payment), listing removals, and returns. Use this to monitor a portfolio of endpoints for adverse changes rather than re-scoring each one. The feed cannot return events from before the observatory archive started; the response reports coverage.archive_since, coverage.rating_actions_recorded, and whether the requested window predates the archive. Costs $0.001 USDC per call via x402 on Base.
mcpfax_preflight_check
read-only
target*probe_methodexpected_paytoexpected_pricemax_age_secondsexpected_schema_hash
Check that an endpoint is live and that its terms have not changed, BEFORE you send it an expensive request. WHEN THIS PAYS FOR ITSELF: a $15 call with a 2% failure rate carries an… Check that an endpoint is live and that its terms have not changed, BEFORE you send it an expensive request. WHEN THIS PAYS FOR ITSELF: a $15 call with a 2% failure rate carries an expected loss of $0.30, so a $0.002 check is a 150x return. WHEN IT DOES NOT: before a $0.001 data lookup the same check is a 2x loss. Buy it before a consequential call — expensive inference, a purchase, a state-changing action — and not before a cheap one. Returns two halves. LIVE: one unpaid bounded probe (~2.2s cap) giving reachability, HTTP status, latency, whether an MCP server still answers initialize, and the price and payTo it is serving right now. HISTORICAL: reliability over our OBSERVED window (stated in days, never implied), payTo changes, price changes, tool-schema changes, first-seen date, and credit grade or an honest not-rated. Supply expected_price, expected_payto or expected_schema_hash and each is compared with old to new and the date we first observed the change. The verdict is ALLOW, WARN or UNKNOWN and is ADVISORY: it reports evidence, it is not a warranty, an audit, or a promise your call will succeed. UNKNOWN is a real answer and is returned whenever the evidence does not support the other two. If we have never observed the target AND cannot reach it, you get UNKNOWN and are charged nothing. Otherwise $0.002 USDC per call via x402 on Base.
mcpfax_wallet_authenticity
read-only
wallet*