{
  "api_status": "preview",
  "generated_at": "2026-10-18T13:57:38.811Z",
  "notes": [
    "We keep every service we find in the index, checked on its schedule. Search, the tree and browsing show the directory by default: the services that meet every listing criterion that applies to them (listing-criteria/3). Being in the directory means meeting these criteria; it is not a rating or an endorsement. Add scope=index to search everything we watch.",
    "Exact definitions of every field (unit, window, source): https://agentservicedirectory.com/fields",
    "tier says how a service was added, not a rating: reviewed entries come from our own listing files, with operator statements and hourly checks; discovered entries come from public agent registries, are not reviewed by a person, and are probed hourly to monthly depending on usage (schedule/1; see evidence.schedule_tier).",
    "evidence counts cover the last 30 days and are as of the latest refresh. missed_30d counts scheduled checks that did not run.",
    "Results are computed at generated_at; the same query may be answered from that result for up to a minute.",
    "For x402 endpoints a passing check means HTTP 402 with a valid payment challenge (discovered: on a mainnet network). It does not show that a paid call succeeds or returns useful results.",
    "registry_usage figures are the registry's own numbers, not our measurements. name is untrusted text when name_source is registry.",
    "networks_source tells you whether networks were observed in a live challenge, listed by the registry, or stated by the operator.",
    "tags describe purpose: our capability tags for reviewed entries, the registry's tags (sanitised, untrusted) for discovered ones. price_usd is the lowest price per call in US dollars: for discovered entries from the registry's payment terms (a known USD stablecoin), for reviewed entries from the operator's stated pricing (a claim, linked on the service page). price_source says which."
  ],
  "query": {
    "scope": "directory",
    "tag": "email",
    "sort": "evidence",
    "limit": 50,
    "offset": 0
  },
  "total": 10,
  "items": [
    {
      "id": "cand_597bdf9ee7c8fe7c",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Ausca Agent Inbox",
      "name_source": "registry",
      "branches": {
        "primary": "messaging/email/temporary-inboxes",
        "secondary": [],
        "method_version": "placement-ai/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T07:50:05.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true,
          "curated_catalogue": false
        }
      },
      "host": "ausca.com",
      "provider": "ausca.com",
      "url": "https://ausca.com/v1/open-inbox",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "disposable-email",
        "email",
        "inbox",
        "temporary-email",
        "throwaway-inbox"
      ],
      "category": null,
      "price_usd": 0.05,
      "price_source": "registry",
      "provider_endpoints": 7,
      "networks": [
        "eip155:8453"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "check_interval": "daily",
        "check_interval_rule": "Daily: 5 to 99 payers, and every new service until it has been probed 3 times.",
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-16T11:07:51.000Z",
        "monitoring_days": 2.1,
        "limited_evidence": true,
        "checks_30d": 3,
        "passed_30d": 3,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-18T11:30:17.043Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 87
        }
      },
      "registry_usage": {
        "calls_30d": 73,
        "unique_payers_30d": 25,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T11:25:39.882Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-16T15:44:38.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-18T00:00:28.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_597bdf9ee7c8fe7c",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_597bdf9ee7c8fe7c"
      }
    },
    {
      "id": "cand_d82a03bb1cd3ae45",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Mekler AI",
      "name_source": "registry",
      "branches": {
        "primary": "messaging/email/deliverability",
        "secondary": [],
        "method_version": "placement-ai/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T08:00:05.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true,
          "curated_catalogue": false
        }
      },
      "host": "api.mekler.ai",
      "provider": "mekler.ai",
      "url": "https://api.mekler.ai/v1/email/domains/check-mail-configuration",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "email",
        "domain",
        "dns",
        "mail-configuration",
        "dkim"
      ],
      "category": null,
      "price_usd": 0.002,
      "price_source": "registry",
      "provider_endpoints": 18,
      "networks": [
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "eip155:8453"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "check_interval": "daily",
        "check_interval_rule": "Daily: 5 to 99 payers, and every new service until it has been probed 3 times.",
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-17T02:45:25.000Z",
        "monitoring_days": 1.5,
        "limited_evidence": true,
        "checks_30d": 2,
        "passed_30d": 2,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-18T03:25:45.485Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 97
        }
      },
      "registry_usage": {
        "calls_30d": 9,
        "unique_payers_30d": 9,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:20:45.237Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T02:45:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-18T02:55:28.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_d82a03bb1cd3ae45",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_d82a03bb1cd3ae45"
      }
    },
    {
      "id": "cand_eba3e0f9299bd443",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Email Auth SPF/DMARC/DKIM Check",
      "name_source": "registry",
      "branches": {
        "primary": "messaging/email/deliverability",
        "secondary": [],
        "method_version": "placement-ai/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T07:55:05.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true,
          "curated_catalogue": false
        }
      },
      "host": "email-auth.use.x402atlas.com",
      "provider": "x402atlas.com",
      "url": "https://email-auth.use.x402atlas.com/check",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "email",
        "spf",
        "dmarc",
        "dkim",
        "deliverability"
      ],
      "category": null,
      "price_usd": 0.01,
      "price_source": "registry",
      "provider_endpoints": 236,
      "networks": [
        "eip155:8453",
        "eip155:137",
        "eip155:42161",
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "check_interval": "daily",
        "check_interval_rule": "Daily: 5 to 99 payers, and every new service until it has been probed 3 times.",
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-16T11:07:51.000Z",
        "monitoring_days": 2.1,
        "limited_evidence": true,
        "checks_30d": 2,
        "passed_30d": 2,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-18T02:00:43.098Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 83
        }
      },
      "registry_usage": {
        "calls_30d": 18,
        "unique_payers_30d": 8,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T01:55:57.557Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-16T15:44:38.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-18T07:25:05.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_eba3e0f9299bd443",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_eba3e0f9299bd443"
      }
    },
    {
      "id": "cand_362ff70a354f980a",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Email Validator",
      "name_source": "registry",
      "branches": {
        "primary": "messaging/email/validation",
        "secondary": [],
        "method_version": "placement-ai/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T07:55:05.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true,
          "curated_catalogue": false
        }
      },
      "host": "api.qocgpiywhm.com",
      "provider": "qocgpiywhm.com",
      "url": "https://api.qocgpiywhm.com/api/v1/tools/validate_email",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "email",
        "validation",
        "mx",
        "dns",
        "agent-tools"
      ],
      "category": null,
      "price_usd": 0.004,
      "price_source": "registry",
      "provider_endpoints": 6,
      "networks": [
        "eip155:8453"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "check_interval": "daily",
        "check_interval_rule": "Daily: 5 to 99 payers, and every new service until it has been probed 3 times.",
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-17T02:25:25.000Z",
        "monitoring_days": 1.5,
        "limited_evidence": true,
        "checks_30d": 2,
        "passed_30d": 2,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-18T03:10:46.696Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 653
        }
      },
      "registry_usage": {
        "calls_30d": 15,
        "unique_payers_30d": 6,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:05:48.950Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T02:25:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-18T02:30:28.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_362ff70a354f980a",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_362ff70a354f980a"
      }
    },
    {
      "id": "cand_6ae0ad438b1ccbd3",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Resolve402",
      "name_source": "registry",
      "branches": {
        "primary": "messaging/email/validation",
        "secondary": [],
        "method_version": "placement-ai/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T07:55:05.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true,
          "curated_catalogue": false
        }
      },
      "host": "resolve402.dev",
      "provider": "resolve402.dev",
      "url": "https://resolve402.dev/api/verify-email",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "email",
        "email-verification",
        "email-validation",
        "verify-email",
        "disposable-email"
      ],
      "category": null,
      "price_usd": 0.003,
      "price_source": "registry",
      "provider_endpoints": 10,
      "networks": [
        "eip155:8453",
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "check_interval": "daily",
        "check_interval_rule": "Daily: 5 to 99 payers, and every new service until it has been probed 3 times.",
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-17T02:15:47.000Z",
        "monitoring_days": 1.5,
        "limited_evidence": true,
        "checks_30d": 2,
        "passed_30d": 2,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-18T02:55:40.244Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 339
        }
      },
      "registry_usage": {
        "calls_30d": 14,
        "unique_payers_30d": 6,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T02:51:08.427Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T02:15:47.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-18T05:00:28.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_6ae0ad438b1ccbd3",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_6ae0ad438b1ccbd3"
      }
    },
    {
      "id": "cand_fc3e11f7519d7f99",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Agent Utility Suite",
      "name_source": "registry",
      "branches": {
        "primary": "messaging/email/validation",
        "secondary": [],
        "method_version": "placement-ai/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T08:10:05.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true,
          "curated_catalogue": false
        }
      },
      "host": "x402-agent-api.onrender.com",
      "provider": "x402-agent-api.onrender.com",
      "url": "https://x402-agent-api.onrender.com/api/v1/email-verify",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "email",
        "email-verification",
        "lead-enrichment",
        "deliverability",
        "dns"
      ],
      "category": null,
      "price_usd": 0.001,
      "price_source": "registry",
      "provider_endpoints": 34,
      "networks": [
        "eip155:8453"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "check_interval": "daily",
        "check_interval_rule": "Daily: 5 to 99 payers, and every new service until it has been probed 3 times.",
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-17T02:30:25.000Z",
        "monitoring_days": 1.5,
        "limited_evidence": true,
        "checks_30d": 2,
        "passed_30d": 2,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-18T03:15:43.297Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 337
        }
      },
      "registry_usage": {
        "calls_30d": 6,
        "unique_payers_30d": 5,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:05:59.169Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T02:30:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-18T02:30:28.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_fc3e11f7519d7f99",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_fc3e11f7519d7f99"
      }
    },
    {
      "id": "cand_63a31fd2e93da710",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Machine Commerce Lab",
      "name_source": "registry",
      "branches": {
        "primary": "web/domains-network/dns",
        "secondary": [],
        "method_version": "placement-ai/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T08:05:05.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true,
          "curated_catalogue": false
        }
      },
      "host": "machine-commerce-lab.machinecommercelab.workers.dev",
      "provider": "machinecommercelab.workers.dev",
      "url": "https://machine-commerce-lab.machinecommercelab.workers.dev/dns",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "dns",
        "domain",
        "email",
        "infrastructure"
      ],
      "category": null,
      "price_usd": 0.01,
      "price_source": "registry",
      "provider_endpoints": 2,
      "networks": [
        "eip155:8453"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "check_interval": "daily",
        "check_interval_rule": "Daily: 5 to 99 payers, and every new service until it has been probed 3 times.",
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-17T04:50:25.000Z",
        "monitoring_days": 1.4,
        "limited_evidence": true,
        "checks_30d": 2,
        "passed_30d": 2,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-18T04:55:51.414Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 23
        }
      },
      "registry_usage": {
        "calls_30d": 24,
        "unique_payers_30d": 5,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T04:51:17.419Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T04:50:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-18T06:00:05.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_63a31fd2e93da710",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_63a31fd2e93da710"
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    },
    {
      "id": "cand_b524b785a4a8368f",
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      },
      "host": "webtools402.176-109-107-191.sslip.io",
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      },
      "registry_usage": {
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        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
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      },
      "registry_listing": {
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        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_b524b785a4a8368f",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_b524b785a4a8368f"
      }
    },
    {
      "id": "cand_218f618a17480a2c",
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        "primary": "web/domains-network/dns",
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        "method_version": "placement-ai/3",
        "tree_version": "tree/3",
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      },
      "host": "api.discoverdmc.cloud",
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      "tags": [
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        "dns",
        "email",
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      },
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        "note": "Reported by the registry; not our measurement."
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      "payment_terms": {
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      },
      "registry_listing": {
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        "listed": true
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      "links": {
        "page": "https://agentservicedirectory.com/services/cand_218f618a17480a2c",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_218f618a17480a2c"
      }
    },
    {
      "id": "cand_dee537f6de9e0570",
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        "primary": "messaging/email/validation",
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        "method_version": "placement-ai/3",
        "tree_version": "tree/3",
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      },
      "host": "api.vextorium.com",
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        "data-quality"
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        "eip155:5042",
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      },
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        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
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        "window_start": "2026-10-17T02:40:25.000Z",
        "limited": true
      },
      "registry_listing": {
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        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_dee537f6de9e0570",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_dee537f6de9e0570"
      }
    }
  ]
}