{
  "api_status": "preview",
  "generated_at": "2026-10-21T13:48:48.110Z",
  "notes": [
    "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 five minutes. Whether each service is in the directory is worked out every five minutes for services just checked or placed, and for every service each hour.",
    "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."
  ],
  "service": {
    "id": "cand_7cba7007bc272a6f",
    "tier": "discovered",
    "type": "api_endpoint",
    "name": "api.onesource.io",
    "name_source": "registry",
    "branches": {
      "primary": "finance-data/crypto/chain-reads",
      "secondary": [],
      "method_version": "placement-ai/3",
      "tree_version": "tree/3",
      "placed_at": "2026-10-18T06:50:05.000Z"
    },
    "place": {
      "id": "finance-data/crypto/chain-reads",
      "name": "Read blockchain data",
      "description": "Node and JSON-RPC access, blocks, transactions, contract reads and explorer data."
    },
    "summary": {
      "text": "Returns the totalSupply of an ERC20 or ERC721 contract.",
      "source": "automated",
      "method": "placement-ai/3",
      "written_at": "2026-10-18T06:50:05.000Z"
    },
    "package": null,
    "directory": {
      "in_directory": true,
      "method_version": "listing-criteria/5",
      "variant_of": null,
      "criteria": {
        "says_what_it_does": true,
        "answers_now": true,
        "registry_payers_at_least_5": true,
        "curated_catalogue": false,
        "not_computable_locally": true,
        "not_test_address": true,
        "not_a_variant": true
      }
    },
    "host": "api.onesource.io",
    "provider": "onesource.io",
    "url": "https://api.onesource.io/api/chain/total-supply",
    "method": "GET",
    "templated_url": false,
    "operator": null,
    "tags": [],
    "category": null,
    "price_usd": 0.003,
    "price_source": "registry",
    "provider_endpoints": 81,
    "networks": [
      "eip155:8453",
      "tempo:4217"
    ],
    "networks_source": "observed",
    "payment_protocols": [
      "x402",
      "mpp"
    ],
    "access": {
      "observed": {
        "requires": "payment",
        "how": [
          "x402",
          "mpp"
        ],
        "at": "2026-10-21T13:21:07.836Z",
        "method": "access/1"
      },
      "stated": null
    },
    "currency": {
      "codes": [
        "USD"
      ],
      "tokens": [
        "USDC"
      ],
      "source": "observed",
      "since": "2026-10-17T03:10:49.302Z",
      "method": "currency/1"
    },
    "interface": null,
    "tools": null,
    "payment_model": {
      "value": "per_call",
      "source": "observed",
      "method": "access/1"
    },
    "mainnet": true,
    "evidence": {
      "operations": 1,
      "check_interval_hours": 1,
      "check_interval": "hourly",
      "check_interval_rule": "Hourly: 100 or more distinct payers in the last 30 days, as reported by the registry.",
      "schedule_tier": "hourly",
      "monitoring_since": "2026-10-16T11:07:51.000Z",
      "monitoring_days": 5.1,
      "limited_evidence": true,
      "checks_30d": 62,
      "passed_30d": 62,
      "missed_30d": 45,
      "pass_rate": 1,
      "freshness": "fresh",
      "last_check": {
        "at": "2026-10-21T13:21:07.836Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 101
      }
    },
    "response_times": {
      "method": "response-times/1",
      "operation": "payment_request",
      "check_method": "candidate-x402/6",
      "check_methods": [
        "candidate-x402/3",
        "candidate-x402/4",
        "candidate-x402/5",
        "candidate-x402/6"
      ],
      "timeout_ms": 10000,
      "computed_at": "2026-10-21T13:25:29.881Z",
      "windows": [
        {
          "window": "24h",
          "start": "2026-10-20T13:25:29.881Z",
          "end": "2026-10-21T13:25:29.881Z",
          "limited_history": false,
          "checks": 21,
          "timeouts": 0,
          "not_timed": 0,
          "median_ms": 88,
          "p90_ms": null,
          "p95_ms": null,
          "p99_ms": null,
          "fastest_ms": 32,
          "slowest_ms": 266,
          "slowest_at": "2026-10-20T17:01:06.662Z",
          "p95_to_median": null
        },
        {
          "window": "7d",
          "start": "2026-10-17T03:10:49.302Z",
          "end": "2026-10-21T13:25:29.881Z",
          "limited_history": true,
          "checks": 61,
          "timeouts": 0,
          "not_timed": 0,
          "median_ms": 88,
          "p90_ms": 203,
          "p95_ms": null,
          "p99_ms": null,
          "fastest_ms": 27,
          "slowest_ms": 266,
          "slowest_at": "2026-10-20T17:01:06.662Z",
          "p95_to_median": null
        },
        {
          "window": "30d",
          "start": "2026-10-17T03:10:49.302Z",
          "end": "2026-10-21T13:25:29.881Z",
          "limited_history": true,
          "checks": 61,
          "timeouts": 0,
          "not_timed": 0,
          "median_ms": 88,
          "p90_ms": 203,
          "p95_ms": null,
          "p99_ms": null,
          "fastest_ms": 27,
          "slowest_ms": 266,
          "slowest_at": "2026-10-20T17:01:06.662Z",
          "p95_to_median": null
        }
      ],
      "measured_from": "eastern North America"
    },
    "registry_usage": {
      "calls_30d": 219,
      "unique_payers_30d": 219,
      "note": "Reported by the registry; not our measurement."
    },
    "payment_terms": {
      "current_since": "2026-10-17T03:10:49.302Z",
      "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": "2026-10-20T00:00:23.000Z",
      "listed": true
    },
    "links": {
      "page": "https://agentservicedirectory.com/services/cand_7cba7007bc272a6f",
      "api": "https://agentservicedirectory.com/api/v1/services/cand_7cba7007bc272a6f"
    },
    "recent_probes": [
      {
        "observed_at": "2026-10-21T13:21:07.836Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 101,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:MIA",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T11:45:46.192Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 81,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T10:00:38.379Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 91,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T08:50:39.848Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 209,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:MIA",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T07:40:41.431Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 192,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:MIA",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T06:30:41.327Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 130,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T05:10:34.276Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 34,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T04:05:34.074Z",
        "result": "payment_required",
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        "http_status": 402,
        "duration_ms": 102,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T03:00:39.187Z",
        "result": "payment_required",
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        "http_status": 402,
        "duration_ms": 88,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
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        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T01:55:42.819Z",
        "result": "payment_required",
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        "http_status": 402,
        "duration_ms": 32,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
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          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-21T00:45:43.405Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 64,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T23:40:38.774Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 49,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T22:35:39.370Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 37,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
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        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T21:25:40.226Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 37,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T20:15:41.970Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 61,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T19:10:45.625Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 212,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
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        ],
        "region": "cloudflare:MIA",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T18:05:54.319Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 95,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T17:01:06.662Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 266,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:MIA",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T15:50:50.990Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 88,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T14:45:51.919Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 69,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T13:35:45.448Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 89,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T12:20:48.016Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 33,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-20T06:50:35.836Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 102,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
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        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-19T05:30:54.312Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 84,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-19T03:55:46.845Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 48,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-19T02:20:22.752Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 85,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-19T01:10:27.719Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 115,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-18T23:55:08.620Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 116,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-18T22:45:08.780Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 64,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      },
      {
        "observed_at": "2026-10-18T21:35:09.761Z",
        "result": "payment_required",
        "passed": true,
        "http_status": 402,
        "duration_ms": 59,
        "x402_valid": true,
        "mainnet": true,
        "x402_networks": [
          "eip155:8453",
          "tempo:4217"
        ],
        "region": "cloudflare:EWR",
        "method_version": "candidate-x402/6",
        "error_detail": null
      }
    ],
    "address_variants": []
  }
}