{
  "api_status": "preview",
  "generated_at": "2026-10-17T21:10:04.083Z",
  "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/1). 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.",
    "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": "gas",
    "sort": "evidence",
    "limit": 50,
    "offset": 0
  },
  "total": 6,
  "items": [
    {
      "id": "cand_ad3cc78c8cbeec10",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "TickersFeed",
      "name_source": "registry",
      "branches": {
        "primary": "finance-data/crypto",
        "secondary": [],
        "method_version": "placement-ai/1",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T11:05:28.000Z"
      },
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/1",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true
        }
      },
      "host": "api.tickersfeed.net",
      "provider": "tickersfeed.net",
      "url": "https://api.tickersfeed.net/gas",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "gas",
        "ethereum",
        "base",
        "onchain",
        "crypto"
      ],
      "category": null,
      "price_usd": 0.001,
      "price_source": "registry",
      "provider_endpoints": 31,
      "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": "2026-10-17T03:55:25.000Z",
        "monitoring_days": 0.7,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T04:05:59.771Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 158
        }
      },
      "registry_usage": {
        "calls_30d": 21,
        "unique_payers_30d": 8,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T04:05:59.771Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T03:55:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T06:55:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_ad3cc78c8cbeec10",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_ad3cc78c8cbeec10"
      }
    },
    {
      "id": "cand_7ec1767213fb4b40",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "oraclepost.higgsfield.app",
      "name_source": "registry",
      "branches": {
        "primary": "finance-data/crypto",
        "secondary": [],
        "method_version": "placement-ai/1",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T11:05:28.000Z"
      },
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/1",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true
        }
      },
      "host": "oraclepost.higgsfield.app",
      "provider": "higgsfield.app",
      "url": "https://oraclepost.higgsfield.app/api/gas",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "gas",
        "network",
        "base",
        "rpc",
        "onchain"
      ],
      "category": null,
      "price_usd": 0.001,
      "price_source": "registry",
      "provider_endpoints": 21,
      "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": 0.8,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T03:06:01.283Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 543
        }
      },
      "registry_usage": {
        "calls_30d": 7,
        "unique_payers_30d": 7,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:06:01.283Z",
        "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": "2026-10-17T10:30:28.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_7ec1767213fb4b40",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_7ec1767213fb4b40"
      }
    },
    {
      "id": "cand_f0d54c2a31eea32e",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Gas Price",
      "name_source": "registry",
      "branches": {
        "primary": "payments/crypto",
        "secondary": [],
        "method_version": "placement-ai/1",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T11:25:28.000Z"
      },
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/1",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true
        }
      },
      "host": "base-facts.yankii.fr",
      "provider": "yankii.fr",
      "url": "https://base-facts.yankii.fr/v1/gas",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "base",
        "gas",
        "fee"
      ],
      "category": null,
      "price_usd": 0.001,
      "price_source": "registry",
      "provider_endpoints": 10,
      "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": 0.8,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T03:05:58.893Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 345
        }
      },
      "registry_usage": {
        "calls_30d": 5,
        "unique_payers_30d": 5,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:05:58.893Z",
        "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": "2026-10-17T09:55:28.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_f0d54c2a31eea32e",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_f0d54c2a31eea32e"
      }
    },
    {
      "id": "cand_efc63720751593d6",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Gas price",
      "name_source": "registry",
      "branches": {
        "primary": "payments/crypto",
        "secondary": [],
        "method_version": "placement-ai/1",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T11:25:28.000Z"
      },
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/1",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true
        }
      },
      "host": "agent402.tools",
      "provider": "agent402.tools",
      "url": "https://agent402.tools/api/gas-estimate",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "payments",
        "gas",
        "gas-price",
        "fees",
        "gwei"
      ],
      "category": null,
      "price_usd": 0.001,
      "price_source": "registry",
      "provider_endpoints": 636,
      "networks": [
        "eip155:8453",
        "eip155:137",
        "eip155:42161",
        "eip155:143",
        "eip155:43114",
        "eip155:1329",
        "eip155:10",
        "eip155:4663",
        "eip155:42220",
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "stellar:pubnet",
        "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8="
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402",
        "mpp"
      ],
      "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": "2026-10-16T23:07:46.000Z",
        "monitoring_days": 0.9,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T05:00:57.117Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 231
        }
      },
      "registry_usage": {
        "calls_30d": 6,
        "unique_payers_30d": 5,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T05:00:57.117Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-16T23:07:46.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T05:40:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_efc63720751593d6",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_efc63720751593d6"
      }
    },
    {
      "id": "cand_9515e812463c20bc",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Gas snapshot (slow / standard /",
      "name_source": "registry",
      "branches": {
        "primary": "finance-data/crypto",
        "secondary": [
          "payments/crypto"
        ],
        "method_version": "placement-ai/1",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T11:20:28.000Z"
      },
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/1",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true
        }
      },
      "host": "agent402.tools",
      "provider": "agent402.tools",
      "url": "https://agent402.tools/api/gas-snapshot",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "crypto",
        "gas",
        "fees",
        "evm",
        "transaction"
      ],
      "category": null,
      "price_usd": 0.005,
      "price_source": "registry",
      "provider_endpoints": 636,
      "networks": [
        "eip155:8453",
        "eip155:137",
        "eip155:42161",
        "eip155:143",
        "eip155:43114",
        "eip155:1329",
        "eip155:10",
        "eip155:4663",
        "eip155:42220",
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "stellar:pubnet",
        "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8="
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402",
        "mpp"
      ],
      "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": "2026-10-16T18:07:55.000Z",
        "monitoring_days": 1.1,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T03:05:42.258Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 85
        }
      },
      "registry_usage": {
        "calls_30d": 63,
        "unique_payers_30d": 5,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:05:42.258Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-16T18:07:55.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T05:40:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_9515e812463c20bc",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_9515e812463c20bc"
      }
    },
    {
      "id": "cand_66958fa2138f6d08",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "base-chain-gas-oracle",
      "name_source": "registry",
      "branches": {
        "primary": "finance-data/crypto",
        "secondary": [],
        "method_version": "placement-ai/1",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T11:15:28.000Z"
      },
      "directory": {
        "in_directory": true,
        "method_version": "listing-criteria/1",
        "criteria": {
          "says_what_it_does": true,
          "answers_now": true,
          "registry_payers_at_least_5": true
        }
      },
      "host": "market.561.group",
      "provider": "561.group",
      "url": "https://market.561.group/v1/base-chain/gas-oracle",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "base",
        "chain-data",
        "gas"
      ],
      "category": null,
      "price_usd": 0.001,
      "price_source": "registry",
      "provider_endpoints": 14,
      "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": 0.8,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T03:05:59.272Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 601
        }
      },
      "registry_usage": {
        "calls_30d": 5,
        "unique_payers_30d": 5,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:05:59.272Z",
        "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": "2026-10-17T09:55:28.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_66958fa2138f6d08",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_66958fa2138f6d08"
      }
    }
  ]
}