{"$schema":"https://verifymcp.io/schemas/trust-report.json","schemaVersion":1,"license":{"name":"CC BY-NC 4.0","url":"https://creativecommons.org/licenses/by-nc/4.0/"},"generatedAt":"2026-11-05T19:26:00.114Z","url":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp","markdownUrl":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp.md","server":{"slug":"dev-paidfor-paidfor","name":"paidfor","registryName":"dev.paidfor/paidfor","description":"Check an x402 seller before paying: verdict, failure rate and evidence from paid calls on Base.","registryStatus":"active","deletedAt":null,"statusMessage":null,"liveness":"live","publisher":{"class":"unknown","claimed":false}},"component":{"slug":"mcp","type":"remote","identifier":"https://mcp.paidfor.dev/mcp","withdrawn":false,"url":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp","version":"0.4.0","transport":null,"scoredAt":"2026-11-05T01:25:37.441Z"},"score":{"total":73,"tier":"medium","status":"scored","weekDelta":null,"history":[{"date":"2026-11-05","total":73},{"date":"2026-11-04","total":72},{"date":"2026-11-03","total":72},{"date":"2026-11-02","total":71},{"date":"2026-11-01","total":71},{"date":"2026-10-31","total":70},{"date":"2026-10-30","total":70}]},"categories":[{"name":"Endpoint Security","score":74,"verdict":"fail","reasons":["The endpoint's TLS certificate is valid, in date, and uses a strong key.","No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation.","HTTPS is enforced; there's no plaintext access path.","HSTS check failed: the Strict-Transport-Security header is absent.","DNSSEC check failed: this domain isn't protected by DNSSEC."],"codes":[{"code":"tls.valid","args":{}},{"code":"auth.none_no_destructive","args":{}},{"code":"https.enforced","args":{}},{"code":"headers.hsts_absent","args":{}},{"code":"dnssec.absent","args":{}}]},{"name":"Transport & Reachability","score":100,"verdict":"pass","reasons":["Verified streamable-http transport via a live MCP handshake."],"codes":[{"code":"transport.verified","args":{"transport":"streamable-http"}}]},{"name":"Schema Quality & AI Usability","score":68,"verdict":"fail","reasons":["AI-judged instruction clarity (excellent).","Context-footprint check failed: tool/resource definitions use about 966 tokens (~241/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params.","Usage-examples check failed: none of the tools include examples."],"codes":[{"code":"schema.ai_quality","args":{"band":"excellent"}},{"code":"schema.footprint_heavy","args":{"avg":"241","items":"4","tools":"4","tokens":"966","resources":"0"}},{"code":"schema.examples_absent","args":{}}]},{"name":"Stability & Change Management","score":20,"verdict":"partial","reasons":["Stability observed for 6 of 30 days with no destabilising changes; credit accrues until the full window elapses."],"codes":[{"code":"stability.building_history","args":{"days":"6"}}]},{"name":"Tool Coverage","score":100,"verdict":"pass","reasons":["100% of tools have a non-trivial description (not blank, and not just the tool's name).","100% of tool parameters carry a description.","Structured output schemas are declared (100% of tools); any adoption earns full credit."],"codes":[{"code":"toolquality.descriptions","args":{"pct":"100"}},{"code":"toolquality.param_docs","args":{"pct":"100"}},{"code":"toolquality.output_present","args":{"pct":"100"}}]},{"name":"Tool Safety","score":100,"verdict":"pass","reasons":["No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.","We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.","An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it."],"codes":[{"code":"toolsafety.injection_clean","args":{}},{"code":"toolsafety.destructive_none","args":{"tools":"4"}},{"code":"toolsafety.manipulation_clean","args":{"units":"5","judged":"5"}}]},{"name":"Capabilities","score":100,"verdict":"pass","reasons":["Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28."],"codes":[{"code":"protocol.supported","args":{"latest":"2026-07-28","version":"2025-11-25"}}]}],"inconclusive":[],"malware":[],"components":[{"slug":"mcp","type":"remote","identifier":"https://mcp.paidfor.dev/mcp","withdrawn":false,"score":73,"current":true,"url":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp","markdownUrl":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp.md"},{"slug":"paidfor-mcp","type":"npm","identifier":"@paidfor/mcp","withdrawn":false,"score":61,"current":false,"url":"https://verifymcp.io/servers/dev-paidfor-paidfor/paidfor-mcp","markdownUrl":"https://verifymcp.io/servers/dev-paidfor-paidfor/paidfor-mcp.md"}],"facts":[{"label":"Endpoint","value":"https://mcp.paidfor.dev/mcp"},{"label":"Transports","value":"streamable-http"},{"label":"Auth","value":"none"},{"label":"Version","value":"0.4.0"}],"install":{"available":true,"bundleSha256":null},"tools":[{"name":"check_x402_seller","title":"Check an x402 seller before paying","description":"Call this before any x402 payment, before retrying a request that answered HTTP 402, or whenever the user is about to buy an API call with USDC on Base or names an API they intend to pay per call. Returns a verdict (avoid, caution, ok, unknown), one sentence to act on, the seller's paid-call count and failure rate with a 95% interval, listed price, modal quote and max overcharge ratio when known, and links to the seller page and raw evidence.","inputs":[{"name":"url","type":"string","required":true,"description":"x402 resource URL, or a bare seller domain such as api.example.com"}],"outputs":[{"name":"candidate","type":null,"required":true,"description":"Queue state for a seller not yet measured; null otherwise"},{"name":"evidence_url","type":"string|null","required":true,"description":null},{"name":"generated_at","type":"string","required":true,"description":"When the index was generated"},{"name":"host","type":"string|null","required":true,"description":null},{"name":"methodology_url","type":"string","required":true,"description":null},{"name":"probe","type":null,"required":true,"description":"Hourly unpaid probes of the seller's 402 quote; null when not probed"},{"name":"resource","type":null,"required":true,"description":"Measured paid calls to this exact URL; null when not measured"},{"name":"seller","type":null,"required":true,"description":"Measured paid calls to this seller; null when the study never paid it"},{"name":"seller_url","type":"string|null","required":true,"description":null},{"name":"verdict","type":"string","required":true,"description":null},{"name":"verdict_text","type":"string","required":true,"description":"One sentence to act on, with the evidence link"}],"hasOutputSchema":true,"hasExamples":false,"tokenEstimate":136},{"name":"list_reliable_sellers","title":"List reliable pay-per-call API sellers","description":"Call this when choosing among sellers for a task, or when the user asks for a safe or reliable API. Returns sellers with zero failures across at least 30 paid calls, most-called first. For each: domain, category, paid-call count, the 95% upper bound on its failure rate, median quoted price in USDC, USDC paid to it in the last 30 days, when it was last seen, and its paidfor seller page.","inputs":[{"name":"category","type":"string","required":false,"description":"Kind of service to list sellers for; omit to list every kind"},{"name":"limit","type":"integer","required":false,"description":"How many sellers to return, most-called first; 50 when omitted"}],"outputs":[{"name":"generated_at","type":"string","required":true,"description":"When the index was generated"},{"name":"sellers","type":"array","required":true,"description":null}],"hasOutputSchema":true,"hasExamples":false,"tokenEstimate":145},{"name":"recent_changes","title":"Recent changes to x402 sellers","description":"Call this when the user asks what changed, or before relying on a verdict older than a day. Returns recent changes, newest first: verdict changes, new failures by type, moved quotes, changed pay-to addresses, sellers added or reaching 30 paid calls, published seller replies, the operator-reported series maturing or disagreeing with ours. Each change has its time, type, seller domain, seller page and type-specific details (for example the old and new quote).","inputs":[{"name":"host","type":"string","required":false,"description":"Seller to show changes for, as a bare domain such as api.example.com; omit for every seller"},{"name":"since","type":"string","required":false,"description":"Show only changes after this time, in ISO 8601 (such as the generated_at of a verdict you already have); omit for the latest changes"}],"outputs":[{"name":"count","type":"number","required":true,"description":"Matching changes the index returned (it caps the feed at the newest 500); events holds at most the newest 100"},{"name":"events","type":"array","required":true,"description":null}],"hasOutputSchema":true,"hasExamples":false,"tokenEstimate":167},{"name":"report_x402_payment","title":"Report an x402 payment outcome","description":"After your agent pays an x402 seller with any wallet, report what came back. Needs the resource URL, the settlement transaction hash and the outcome. Free, no account, no key; the report counts only with on-chain proof.","inputs":[{"name":"http_status","type":"integer","required":false,"description":"The HTTP status of the paid response, if known"},{"name":"outcome","type":"string","required":true,"description":"What came back: ok (the response was usable for its purpose), non_delivery (an error, an empty body or nothing usable after paying), wrong_goods (a usable response, but not what was asked for), overc…"},{"name":"quoted_usdc","type":null,"required":false,"description":"The price the 402 quoted, in USDC, if known"},{"name":"tx_hash","type":"string","required":true,"description":"The settlement transaction hash on Base: the `transaction` field of the seller's PAYMENT-RESPONSE or X-PAYMENT-RESPONSE header (base64 JSON)"},{"name":"url","type":"string","required":true,"description":"The x402 resource URL that was paid for"}],"outputs":[{"name":"amount_usdc","type":"string|null","required":true,"description":"USDC moved, read from the transaction"},{"name":"pay_to","type":"string|null","required":true,"description":null},{"name":"payer","type":"string|null","required":true,"description":"The paying wallet, read from the transaction (never from the report)"},{"name":"reason","type":"string|null","required":true,"description":"Why a report was rejected; null otherwise"},{"name":"sentence","type":"string","required":true,"description":"The result in one sentence"},{"name":"status","type":"string","required":true,"description":"verified: counted once folded in (minutes); pending: checked on Base again within minutes; duplicate: this transaction was already reported; rejected: not counted, see reason"},{"name":"verification_url","type":"string|null","required":true,"description":null}],"hasOutputSchema":true,"hasExamples":false,"tokenEstimate":221}],"toolsTruncatedAtCapture":false,"diagnostics":{"capturedAt":"2026-11-05T01:25:37.000Z","track":"remote","endpoint":"https://mcp.paidfor.dev/mcp","declaredUrl":null,"truncated":false,"tls":{"outcome":"valid","label":"Valid","version":"TLS 1.3","cipherSuite":"TLS_AES_128_GCM_SHA256","chainError":null,"certificates":[{"subject":"CN=mcp.paidfor.dev","issuer":"CN=Cloudflare TLS Issuing ECC CA 3,O=SSL Corporation,C=US","notBefore":"2026-10-28T20:42:58Z","notAfter":"2027-01-26T20:43:53Z","keyType":"ECDSA","keyBits":256,"isCa":false},{"subject":"CN=Cloudflare TLS Issuing ECC CA 3,O=SSL Corporation,C=US","issuer":"CN=SSL.com TLS Transit ECC CA R2,O=SSL Corporation,C=US","notBefore":"2025-05-29T19:49:45Z","notAfter":"2035-05-27T19:49:44Z","keyType":"ECDSA","keyBits":256,"isCa":true},{"subject":"CN=SSL.com TLS Transit ECC CA R2,O=SSL Corporation,C=US","issuer":"CN=SSL.com TLS ECC Root CA 2022,O=SSL Corporation,C=US","notBefore":"2022-10-21T17:02:23Z","notAfter":"2037-10-17T17:02:22Z","keyType":"ECDSA","keyBits":384,"isCa":true},{"subject":"CN=SSL.com TLS ECC Root CA 2022,O=SSL Corporation,C=US","issuer":"CN=AAA Certificate Services,O=Comodo CA Limited,L=Salford,ST=Greater Manchester,C=GB","notBefore":"2025-08-01T00:00:00Z","notAfter":"2028-12-31T23:59:59Z","keyType":"ECDSA","keyBits":384,"isCa":true}]},"dnssec":{"result":"insecure","label":"Not signed","name":"mcp.paidfor.dev.","steps":[{"zone":".","outcome":"verified","label":"Verified"},{"zone":"dev.","outcome":"verified","label":"Verified"},{"zone":"paidfor.dev.","outcome":"insecure_proven","label":"Unsigned (proven)"}]},"auth":{"outcome":"none","label":"No authorisation required","gate":null,"gateLabel":null,"status":200,"authorizationServers":[]},"httpsRedirect":{"outcome":"https_enforced","label":"HTTPS enforced","status":301},"transports":[{"transport":"streamable-http","outcome":"verified","label":"Verified","status":200,"followed":false}],"provenance":null,"installScripts":[],"installScriptsTotal":null,"vulnerabilities":[],"vulnerabilitiesTotal":null,"dependencies":null},"mismatches":[],"changelog":{"trackingSince":"2026-10-30","recent":[{"id":"chg_01a1a94f-bc31-7b91-b657-443b77dc6f98","kind":"score.total_changed","summary":"Trust score (72 → 73)","materiality":"functional","direction":"improvement","scoreDelta":1,"occurredOn":"2026-11-05","url":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp#chg-chg_01a1a94f-bc31-7b91-b657-443b77dc6f98"},{"id":"chg_01a19f02-a86b-7681-a4cf-345d1b9f3270","kind":"score.total_changed","summary":"Trust score (71 → 72)","materiality":"functional","direction":"improvement","scoreDelta":1,"occurredOn":"2026-11-03","url":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp#chg-chg_01a19f02-a86b-7681-a4cf-345d1b9f3270"},{"id":"chg_01a194b6-648e-77fc-9c82-46da0c698ff6","kind":"score.total_changed","summary":"Trust score (70 → 71)","materiality":"functional","direction":"improvement","scoreDelta":1,"occurredOn":"2026-11-01","url":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp#chg-chg_01a194b6-648e-77fc-9c82-46da0c698ff6"},{"id":"chg_01a18f90-e43c-7e34-a89b-f4c7baa7edd1","kind":"check.reverified","summary":"Stability (unverified → 0.03)","materiality":"functional","direction":"improvement","scoreDelta":null,"occurredOn":"2026-10-31","url":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp#chg-chg_01a18f90-e43c-7e34-a89b-f4c7baa7edd1"},{"id":"chg_01a18b44-2ff9-729d-a109-041e8268ca4f","kind":"score.first_scored","summary":"First indexed and scored","materiality":"functional","direction":"neutral","scoreDelta":null,"occurredOn":"2026-10-30","url":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp#chg-chg_01a18b44-2ff9-729d-a109-041e8268ca4f"}],"truncated":false,"feedUrl":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp/changelog.json"},"links":{"html":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp","markdown":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp.md","changelogJson":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp/changelog.json","changelogRss":"https://verifymcp.io/servers/dev-paidfor-paidfor/mcp.xml","external":[{"label":"Remote endpoint","href":"https://mcp.paidfor.dev/mcp"},{"label":"Website","href":"https://paidfor.dev/install"}]}}