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MCPFax Reliability

R0· no sign-in

Before you pay an endpoint you cannot vouch for: credit grade, drift and preflight.

v1.1.5 · active · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality88good
Trust79of 100
Uptime, 30 days94%
Latency p50161 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "agent-reliability-scores": {
      "type": "http",
      "url": "https://mcpfax-reliability.bowling-anthony.workers.dev/mcp"
    }
  }
}
claude mcp add --transport http agent-reliability-scores https://mcpfax-reliability.bowling-anthony.workers.dev/mcp
[mcp_servers.agent-reliability-scores]
url = "https://mcpfax-reliability.bowling-anthony.workers.dev/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "agent-reliability-scores": {
      "type": "remote",
      "url": "https://mcpfax-reliability.bowling-anthony.workers.dev/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "agent-reliability-scores": {
      "type": "http",
      "url": "https://mcpfax-reliability.bowling-anthony.workers.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=agent-reliability-scores&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwZmF4LXJlbGlhYmlsaXR5LmJvd2xpbmctYW50aG9ueS53b3JrZXJzLmRldi9tY3AifQ%3D%3D"
}
{
  "servers": {
    "agent-reliability-scores": {
      "type": "http",
      "url": "https://mcpfax-reliability.bowling-anthony.workers.dev/mcp"
    }
  }
}
{
  "mcpServers": {
    "agent-reliability-scores": {
      "httpUrl": "https://mcpfax-reliability.bowling-anthony.workers.dev/mcp"
    }
  }
}
extensions:
  "agent-reliability-scores":
    enabled: true
    name: "agent-reliability-scores"
    type: streamable_http
    uri: "https://mcpfax-reliability.bowling-anthony.workers.dev/mcp"
    timeout: 300

Quality 88 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene93 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • warn
    tools.description_length2 tools have descriptions over 1,024 characters, which crowds the context
  • pass
    tools.schemasevery tool has an object input schema
  • pass
    tools.annotations7 of 7 tools declare readOnlyHint or destructiveHint
  • pass
    tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
  • pass
    tools.token_costabout 2,618 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

7 tools, about 2,618 tokens to load them all · tool set 551eb942746e · checked 2026-10-20 15:57 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 79 / 100

no-repository
provenance55
liveness98
freshness85
hygiene80

+dns-namespace +website +reachable +uptime-94% ~updated-50d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://mcpfax-reliability.bowling-anthony.workers.dev/mcp streamable-httpnoneyes94%161 ms2025-06-182026-10-20

Tools (7)

mcpfax_endpoint_credit_scoreread-onlyCreditworthiness 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 $0.008 USDC per call via x402 on Base.
mcpfax_endpoint_revenue_estimateread-onlyObserved 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 $0.005 USDC per call via x402 on Base.
mcpfax_integration_driftread-onlyWhat 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 observed-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 $0.008 USDC per call via x402 on Base.
mcpfax_payer_wallet_profileread-onlyKnow-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 $0.008 USDC per call via x402 on Base.
mcpfax_payto_change_feedread-onlyChronological 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 $0.005 USDC per call via x402 on Base.
mcpfax_preflight_checkread-onlyCheck that an endpoint is live and that its terms have not changed, BEFORE you send it an expensive request. A $15 call with a hypothetical 2% loss rate carries $0.30 of expected loss; a reachability check cannot promise to prevent it. Compare the quoted fee with the value of the pending call and the failures this check can actually detect. For a cheap $0.001 lookup, the $0.008 fee is eight times the call price. 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 $0.008 USDC per call via x402 on Base.
mcpfax_wallet_authenticityread-onlyPayer-concentration and wash-risk assessment for a receiving wallet: how concentrated its observed payers are, the measured coverage of that observation, an explicit wash-risk haircut ONLY when coverage is sufficient, how many listings declare the same address, and observed USDC inflow. Use this to judge whether a seller's apparent revenue reflects real independent demand. The haircut and the adjusted-inflow figure are withheld as null with status "not_rated" until the wallet's own record covers at least 14 days and 20 payments, because below that a thin payer count is a property of our observation window, not of the wallet. Concentration is not proof of common control. Costs $0.01 USDC per call via x402 on Base.

Schemas: list_tools.

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Official server.json
{
  "name": "com.mcpscores/agent-reliability-scores",
  "_meta": {
    "io.modelcontextprotocol.registry/publisher-provided": {
      "x402": {
        "asset": "USDC",
        "network": "base",
        "protocol": "x402",
        "networkNote": "The 402 challenge is x402 v1 and advertises accepts[0].network = \"base\", the named network the standard x402 client libraries accept. eip155:8453 is the CAIP-2 label for the same chain and is never put on the wire.",
        "x402Version": 1,
        "assetAddress": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "caip2Network": "eip155:8453"
      },
      "pricing": {
        "model": "per-call",
        "perTool": {
          "mcpfax_preflight_check": "0.008",
          "mcpfax_integration_drift": "0.008",
          "mcpfax_payto_change_feed": "0.005",
          "mcpfax_wallet_authenticity": "0.01",
          "mcpfax_payer_wallet_profile": "0.008",
          "mcpfax_endpoint_credit_score": "0.008",
          "mcpfax_endpoint_revenue_estimate": "0.005"
        },
        "currency": "USD"
      },
      "homepage": "https://mcpfax-reliability.bowling-anthony.workers.dev/",
      "dataCoverage": {
        "note": "The observation archive is young and every reported window is bounded by it. Nothing is a 30-day or 90-day record until the archive covers 30 or 90 days, and no window is back-filled.",
        "measuredAt": "GET /health -> coverage.archive_since, coverage.archive_through, coverage.archive_days",
        "notRatedPolicy": "Payer-concentration, wash-risk and payer screening verdicts are withheld as not_rated until the subject's own observed record covers at least 14 days and 20 observed payments. Measured facts are still returned; the risk figures are null."
      },
      "freeEndpoints": [
        "/health",
        "/llms.txt",
        "/server.json",
        "initialize",
        "ping",
        "tools/list"
      ]
    }
  },
  "title": "MCPFax Reliability",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcpfax-reliability.bowling-anthony.workers.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.1.5",
  "websiteUrl": "https://mcpscores.com",
  "description": "Before you pay an endpoint you cannot vouch for: credit grade, drift and preflight."
}