{
  "api_status": "preview",
  "generated_at": "2026-10-17T03:38:04.733Z",
  "notes": [
    "Exact definitions of every field (unit, window, source): https://agentserviceatlas.com/fields",
    "reviewed entries have a sourced trust profile 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": {
    "tag": "echo",
    "sort": "evidence",
    "limit": 50,
    "offset": 0
  },
  "total": 4,
  "items": [
    {
      "id": "cand_380b09244c478592",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Oblique Markets",
      "name_source": "registry",
      "host": "api.oblique.markets",
      "url": "https://api.oblique.markets/api/v1/paid/echo",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "echo",
        "diagnostics",
        "x402-test",
        "utility"
      ],
      "category": null,
      "price_usd": 0.01,
      "price_source": "registry",
      "provider_endpoints": 46,
      "networks": [
        "eip155:8453",
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402",
        "mpp"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-16T14:07:55.000Z",
        "monitoring_days": 0.6,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T03:20:44.196Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 11
        }
      },
      "registry_usage": {
        "calls_30d": 10,
        "unique_payers_30d": 8,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:20:44.196Z",
        "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": "2026-10-16T14:07:55.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentserviceatlas.com/services/cand_380b09244c478592",
        "api": "https://agentserviceatlas.com/api/v1/services/cand_380b09244c478592"
      }
    },
    {
      "id": "cand_d645b6b086809f60",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "x402-payment-test",
      "name_source": "registry",
      "host": "x402.agentindex.world",
      "url": "https://x402.agentindex.world/x402-echo",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "x402",
        "conformance",
        "echo"
      ],
      "category": null,
      "price_usd": 0.001,
      "price_source": "registry",
      "provider_endpoints": 104,
      "networks": [
        "eip155:8453"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-17T02:30:25.000Z",
        "monitoring_days": 0,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T03:05:57.592Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 365
        }
      },
      "registry_usage": {
        "calls_30d": 322,
        "unique_payers_30d": 3,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:05:57.592Z",
        "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": "2026-10-17T02:30:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentserviceatlas.com/services/cand_d645b6b086809f60",
        "api": "https://agentserviceatlas.com/api/v1/services/cand_d645b6b086809f60"
      }
    },
    {
      "id": "cand_cf40ab1c0eb13450",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "P0 x402 Market Index",
      "name_source": "registry",
      "host": "x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev",
      "url": "https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/x402-echo",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "echo",
        "x402-test",
        "demo",
        "debug"
      ],
      "category": null,
      "price_usd": 0.001,
      "price_source": "registry",
      "provider_endpoints": 40,
      "networks": [
        "eip155:8453",
        "eip155:42161",
        "eip155:137",
        "eip155:43114",
        "eip155:10",
        "eip155:42220",
        "eip155:1",
        "stacks:1"
      ],
      "networks_source": "observed",
      "payment_protocols": [
        "x402"
      ],
      "mainnet": true,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-17T02:55:25.000Z",
        "monitoring_days": 0,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T03:25:58.389Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 150
        }
      },
      "registry_usage": null,
      "payment_terms": {
        "current_since": "2026-10-17T03:25:58.389Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T02:55:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T02:55:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentserviceatlas.com/services/cand_cf40ab1c0eb13450",
        "api": "https://agentserviceatlas.com/api/v1/services/cand_cf40ab1c0eb13450"
      }
    },
    {
      "id": "cand_86b50930081dc10c",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "env-facility",
      "name_source": "registry",
      "host": "payai.agentstools.dev",
      "url": "https://payai.agentstools.dev/env/facility",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "environmental",
        "compliance",
        "esg",
        "epa",
        "echo"
      ],
      "category": null,
      "price_usd": null,
      "price_source": null,
      "provider_endpoints": 357,
      "networks": [
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
      ],
      "networks_source": "registry",
      "payment_protocols": [],
      "mainnet": null,
      "evidence": {
        "operations": 1,
        "check_interval_hours": 24,
        "schedule_tier": "daily",
        "monitoring_since": "2026-10-17T02:45:25.000Z",
        "monitoring_days": 0,
        "limited_evidence": true,
        "checks_30d": 0,
        "passed_30d": 0,
        "missed_30d": 0,
        "pass_rate": null,
        "freshness": "no_data",
        "last_check": null
      },
      "registry_usage": null,
      "payment_terms": null,
      "registry_listing": {
        "last_seen_at": "2026-10-17T02:45:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentserviceatlas.com/services/cand_86b50930081dc10c",
        "api": "https://agentserviceatlas.com/api/v1/services/cand_86b50930081dc10c"
      }
    }
  ]
}