{
  "api_status": "preview",
  "generated_at": "2026-10-17T10:48:33.831Z",
  "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.",
    "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": "quant",
    "sort": "evidence",
    "limit": 50,
    "offset": 0
  },
  "total": 12,
  "items": [
    {
      "id": "cand_1a9e81f95ea2a803",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "quant-options",
      "name_source": "registry",
      "branches": {
        "primary": "other",
        "secondary": [],
        "method_version": "placement-rules/1",
        "tree_version": "tree/1",
        "placed_at": "2026-10-17T08:50:28.000Z"
      },
      "host": "api.agentstools.dev",
      "provider": "agentstools.dev",
      "url": "https://api.agentstools.dev/quant/options",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "quant",
        "options",
        "black-scholes",
        "greeks",
        "implied-volatility"
      ],
      "category": null,
      "price_usd": 0.003,
      "price_source": "registry",
      "provider_endpoints": 509,
      "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": "2026-10-16T22:07:46.000Z",
        "monitoring_days": 0.5,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T02:35:59.494Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 204
        }
      },
      "registry_usage": {
        "calls_30d": 6,
        "unique_payers_30d": 5,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T02:35:59.494Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-16T22:07:46.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T07:35:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_1a9e81f95ea2a803",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_1a9e81f95ea2a803"
      }
    },
    {
      "id": "cand_13c97a79c4af1a03",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Stock Bloc",
      "name_source": "registry",
      "branches": {
        "primary": "finance-data/markets",
        "secondary": [],
        "method_version": "placement-rules/1",
        "tree_version": "tree/1",
        "placed_at": "2026-10-17T08:50:28.000Z"
      },
      "host": "stockbloc.ai.studio",
      "provider": "stockbloc.ai.studio",
      "url": "https://stockbloc.ai.studio/api/data/market",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "stocks",
        "sec",
        "13f",
        "quant",
        "forecasting"
      ],
      "category": null,
      "price_usd": 0.01,
      "price_source": "registry",
      "provider_endpoints": 4,
      "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": "2026-10-17T02:20:25.000Z",
        "monitoring_days": 0.4,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T02:55:51.224Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 96
        }
      },
      "registry_usage": {
        "calls_30d": 4,
        "unique_payers_30d": 4,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T02:55:51.224Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T02:20:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T08:20:28.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_13c97a79c4af1a03",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_13c97a79c4af1a03"
      }
    },
    {
      "id": "cand_e7d041a7f78652f5",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Trading signal backtest",
      "name_source": "registry",
      "branches": null,
      "host": "api.marketintelligenceapi.com",
      "provider": "marketintelligenceapi.com",
      "url": "https://api.marketintelligenceapi.com/api/v1/intelligence/backtest",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "backtesting",
        "signal-validation",
        "quant",
        "market-data",
        "trading-signals"
      ],
      "category": null,
      "price_usd": 0.05,
      "price_source": "registry",
      "provider_endpoints": 103,
      "networks": [
        "eip155:8453",
        "eip155:137",
        "eip155:42161",
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "eip155:480",
        "eip155:84532"
      ],
      "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": "2026-10-17T03:00:25.000Z",
        "monitoring_days": 0.3,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T04:51:00.620Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 403
        }
      },
      "registry_usage": {
        "calls_30d": 12,
        "unique_payers_30d": 3,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T04:51:00.620Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T03:00:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T03:00:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_e7d041a7f78652f5",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_e7d041a7f78652f5"
      }
    },
    {
      "id": "cand_d5304bc85c2fb7f0",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "quant-kelly",
      "name_source": "registry",
      "branches": null,
      "host": "api.agentstools.dev",
      "provider": "agentstools.dev",
      "url": "https://api.agentstools.dev/quant/kelly",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "quant",
        "kelly",
        "position-sizing",
        "bankroll",
        "betting"
      ],
      "category": null,
      "price_usd": 0.001,
      "price_source": "registry",
      "provider_endpoints": 509,
      "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": "2026-10-17T03:40:25.000Z",
        "monitoring_days": 0.3,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T05:35:59.906Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 201
        }
      },
      "registry_usage": {
        "calls_30d": 4,
        "unique_payers_30d": 3,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T05:35:59.906Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T03:40:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T03:40:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_d5304bc85c2fb7f0",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_d5304bc85c2fb7f0"
      }
    },
    {
      "id": "cand_b067ce8350da7e1d",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "FiatDock",
      "name_source": "registry",
      "branches": {
        "primary": "finance-data/markets",
        "secondary": [
          "finance-data/crypto"
        ],
        "method_version": "placement-rules/3",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T10:25:28.000Z"
      },
      "host": "fiatdock.com",
      "provider": "fiatdock.com",
      "url": "https://fiatdock.com/v1/market/backtest",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "backtest",
        "trading",
        "strategy",
        "crypto",
        "quant"
      ],
      "category": null,
      "price_usd": 0.009,
      "price_source": "registry",
      "provider_endpoints": 121,
      "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": "2026-10-17T02:45:25.000Z",
        "monitoring_days": 0.3,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T03:45:59.659Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 493
        }
      },
      "registry_usage": {
        "calls_30d": 2,
        "unique_payers_30d": 2,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:45:59.659Z",
        "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": "2026-10-17T03:40:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_b067ce8350da7e1d",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_b067ce8350da7e1d"
      }
    },
    {
      "id": "cand_8e165857ee6a8d1b",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Losbeto Market Intelligence",
      "name_source": "registry",
      "branches": {
        "primary": "finance-data/markets",
        "secondary": [],
        "method_version": "placement-rules/3",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T10:00:28.000Z"
      },
      "host": "api.losbeto.xyz",
      "provider": "losbeto.xyz",
      "url": "https://api.losbeto.xyz/backtest",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "trading",
        "quant",
        "crypto",
        "market-data"
      ],
      "category": null,
      "price_usd": 0.06,
      "price_source": "registry",
      "provider_endpoints": 105,
      "networks": [
        "eip155:8453",
        "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
        "eip155:137"
      ],
      "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": "2026-10-17T01:55:47.000Z",
        "monitoring_days": 0.4,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T05:26:03.938Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 160
        }
      },
      "registry_usage": {
        "calls_30d": 69,
        "unique_payers_30d": 2,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T05:26:03.938Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T01:55:47.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T06:25:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_8e165857ee6a8d1b",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_8e165857ee6a8d1b"
      }
    },
    {
      "id": "cand_7423d0508ccc782a",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Stock Bloc",
      "name_source": "registry",
      "branches": {
        "primary": "finance-data/markets",
        "secondary": [
          "finance-data/company",
          "places/weather"
        ],
        "method_version": "placement-rules/2",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T09:45:28.000Z"
      },
      "host": "stockbloc.ai.studio",
      "provider": "stockbloc.ai.studio",
      "url": "https://stockbloc.ai.studio/api/v1/data/sec",
      "method": "GET",
      "templated_url": false,
      "operator": null,
      "tags": [
        "stocks",
        "sec",
        "13f",
        "quant",
        "forecasting"
      ],
      "category": null,
      "price_usd": 0.1,
      "price_source": "registry",
      "provider_endpoints": 4,
      "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": "2026-10-17T02:40:25.000Z",
        "monitoring_days": 0.3,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T03:20:51.426Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 127
        }
      },
      "registry_usage": {
        "calls_30d": 1,
        "unique_payers_30d": 1,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T03:20:51.426Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T02:40:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-17T02:40:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_7423d0508ccc782a",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_7423d0508ccc782a"
      }
    },
    {
      "id": "cand_99b81c9f2ff9fdfd",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Stock Bloc",
      "name_source": "registry",
      "branches": {
        "primary": "finance-data/markets",
        "secondary": [
          "finance-data/company",
          "places/weather"
        ],
        "method_version": "placement-rules/3",
        "tree_version": "tree/2",
        "placed_at": "2026-10-17T10:05:28.000Z"
      },
      "host": "stockbloc.ai.studio",
      "provider": "stockbloc.ai.studio",
      "url": "https://stockbloc.ai.studio/api/v1/sec/job",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "stocks",
        "sec",
        "13f",
        "quant",
        "forecasting"
      ],
      "category": null,
      "price_usd": 0.25,
      "price_source": "registry",
      "provider_endpoints": 4,
      "networks": [
        "eip155:8453"
      ],
      "networks_source": "registry",
      "payment_protocols": [],
      "mainnet": null,
      "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": "2026-10-17T01:55:47.000Z",
        "monitoring_days": 0.4,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 0,
        "missed_30d": 0,
        "pass_rate": 0,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T02:45:57.210Z",
          "result": "client_error",
          "passed": false,
          "http_status": 400,
          "duration_ms": 634
        }
      },
      "registry_usage": {
        "calls_30d": 5,
        "unique_payers_30d": 4,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": null,
      "registry_listing": {
        "last_seen_at": "2026-10-17T03:15:25.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_99b81c9f2ff9fdfd",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_99b81c9f2ff9fdfd"
      }
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