{"$schema":"https://wellknown.network/schemas/agent-record-v1.json","schemaVersion":"1","id":"ag_j7f4v5py2vdp","handle":"postbox-tools","url":"https://wellknown.network/agents/postbox-tools","links":{"self":"https://wellknown.network/agents/postbox-tools/record.json","html":"https://wellknown.network/agents/postbox-tools","markdown":"https://wellknown.network/agents/postbox-tools/record.md","api":"https://wellknown.network/api/v1/agents/postbox-tools","status":"https://wellknown.network/api/v1/agents/postbox-tools/status","claim":"https://wellknown.network/agents/postbox-tools/claim","claimApi":"https://wellknown.network/api/v1/claims","claimDescriptor":"https://wellknown.network/agents/postbox-tools/claim.json","badge":"https://wellknown.network/agents/postbox-tools/badge.svg","openapi":"https://wellknown.network/openapi.json","history":"https://wellknown.network/api/v1/agents/postbox-tools/history","tools":"https://wellknown.network/api/v1/agents/postbox-tools/tools"},"ard":{"identifier":"urn:air:mcp.postboxservices.com:server:postbox-tools","type":"application/mcp-server-card+json"},"kind":"mcp_server","declared":{"name":"postbox-tools","summary":"Free email checks: 24 blacklists, spoofing/BEC grade, redirect tracing, email spam test, WHOIS.","description":"Free email checks: 24 blacklists, spoofing/BEC grade, redirect tracing, email spam test, WHOIS.","publisher":{"name":"com.postboxservices","url":null},"homepage":"https://postboxservices.com/mcp/","repository":null,"version":"0.1.1","license":null,"protocols":["mcp"],"tags":[],"pricing":null,"endpoints":[{"url":"https://mcp.postboxservices.com/mcp","type":"mcp_streamable_http","auth":null,"probeable":true}],"skills":null,"tools":null,"extra":{"updatedAt":"2026-09-26T19:11:55.243282Z","publishedAt":"2026-09-26T19:11:55.243282Z","registryName":"com.postboxservices/postbox-tools"},"attribution":{"kind":"mcp_registry","name":"mcp_registry","summary":"mcp_registry","version":"mcp_registry","description":"mcp_registry","homepageUrl":"mcp_registry","publisherName":"mcp_registry"}},"derived":{"capabilities":[{"slug":"productivity.email","name":"Email","confidence":1,"provenance":"derived"},{"slug":"content.writing","name":"Writing & Editing","confidence":0.51,"provenance":"derived"}],"categories":["content","productivity"],"language":"en"},"observed":{"status":"live","statusReason":"Responded 6h ago.","lastOkAt":"2026-10-11T00:28:11.921Z","lastProbedAt":"2026-10-11T00:28:11.921Z","statusComputedAt":"2026-10-11T00:29:22.625Z","reliability30d":{"probes":48,"successRate":1,"p50Ms":381,"basis":"service","measures":{"availability":"availability","latency":"response time","tools":"tool surface observed","summary":"Checks reached the service itself."},"checks":{"total":48,"ok":48,"authBoundaryOk":0,"serviceOk":48,"note":"Counted from the observation rows for the window, checks of the server only (HTTP, A2A card, MCP initialize). ok = authBoundaryOk + serviceOk. `probes` is the sum of daily rollups and includes registry checks, so it can differ from `total`."}},"latestObservations":[{"at":"2026-10-11T00:28:11.921Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":378,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}},{"at":"2026-10-10T18:28:37.646Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":383,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}},{"at":"2026-10-10T12:29:10.743Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":379,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}},{"at":"2026-10-10T06:27:17.642Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":429,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T23:29:50.604Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":412,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T16:31:44.898Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":454,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T09:26:42.085Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":458,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T02:27:01.361Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":355,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}},{"at":"2026-10-08T20:23:48.059Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":391,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}},{"at":"2026-10-08T13:22:04.872Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":366,"error":null,"detail":{"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"toolCount":8,"toolsHash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","serverName":"postbox-tools","capabilities":["tools"],"serverVersion":"0.1.1","protocolVersion":"2025-06-18"}}],"tools":[{"name":"check_blacklist","description":"Check a domain against domain blacklists (Spamhaus DBL, SURBL, URIBL and others), or an IP address against 24 IP blacklists including Spamhaus ZEN, Barracuda an"},{"name":"check_spoofability","description":"Grade how exposed a domain is to email spoofing and business email compromise, from its public DNS (SPF, DMARC policy strength, alignment, live lookalike domain"},{"name":"trace_redirect","description":"Follow a URL server-side through every HTTP redirect hop to its real final destination - per-hop status, IP, TLS and timing, plus phishing/deliverability flags "},{"name":"create_mailtest","description":"Create a disposable test address for a full email deliverability audit (score /10: SPF, DKIM, DMARC + alignment, blacklists, reverse DNS, SpamAssassin content, "},{"name":"get_mailtest_result","description":"Fetch the score and breakdown of a mail test created with create_mailtest, once the user has sent their email to the disposable address."},{"name":"analyze_eml","description":"Run a deliverability/content analysis on a raw RFC 822 email (.eml source: full headers + body). IMPORTANT LIMITS: with no live SMTP session, SPF, blacklist and"},{"name":"get_domain_age","description":"Get a domain's registration date and age (young domains have weak sending reputation)."},{"name":"whois_lookup","description":"WHOIS summary for a domain: registrar, created/updated/expires dates, nameservers, DNSSEC, status flags."}],"package":null,"toolSurface":{"id":"ts_7fc5n5qc3k4b","endpointId":"ep_cbn4j9kt35t9","hash":"9193769b74e067d540409220f5290650141ad18900cfd70bdb83927c7403c282","toolCount":8,"serverName":"postbox-tools","serverVersion":"0.1.1","protocolVersion":"2025-06-18","firstSeenAt":"2026-09-28T09:27:04.775Z","lastSeenAt":"2026-10-11T00:28:11.939Z","observations":47,"toolNames":["check_blacklist","check_spoofability","trace_redirect","create_mailtest","get_mailtest_result","analyze_eml","get_domain_age","whois_lookup"],"distinctSurfaces":2},"endpointFacts":[{"id":"ep_cbn4j9kt35t9","url":"https://mcp.postboxservices.com/mcp","type":"mcp_streamable_http","factsCheckedAt":"2026-10-08T20:23:48.068Z","auth":{"observedAt":"2026-10-08T20:23:48.363Z","authRequired":false,"scheme":null,"resourceMetadata":null,"authorizationServer":null,"conformance":{"dpop":false,"rfc8414":false,"rfc9728":false,"pkceS256":false,"clientIdMetadataDocument":false,"dynamicClientRegistration":false}},"tls":{"observedAt":"2026-10-08T20:23:48.373Z","protocol":"TLSv1.3","chainValid":true,"chainError":null,"hostMatches":true,"subject":"postboxservices.com","issuer":{"commonName":"WE1","organization":"Google Trust Services"},"validFrom":"2026-09-08T10:22:59.000Z","validTo":"2026-12-07T11:22:45.000Z","daysToExpiry":57,"sanCount":2,"fingerprint256":"C0:5F:94:5E:D0:4B:7B:9E:46:96:E7:76:65:38:6C:95:CA:D4:25:3C:17:20:74:9A:70:C5:6B:C6:E3:C9:AA:59"}}]},"verification":{"claimed":false,"claimedAt":null,"proofs":[]},"provenance":{"sources":[{"source":"mcp_registry","key":"com.postboxservices/postbox-tools","url":"https://registry.modelcontextprotocol.io/v0/servers/com.postboxservices%2Fpostbox-tools","firstSeenAt":"2026-09-28T02:18:01.347Z","fetchedAt":"2026-10-09T10:19:00.055Z","normalizedAt":"2026-10-09T10:19:00.055Z"}]},"firstSeenAt":"2026-09-28T02:18:01.347Z","updatedAt":"2026-10-11T00:30:57.855Z"}