{
  "api_status": "preview",
  "generated_at": "2026-10-18T14:50:07.066Z",
  "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": "index",
    "tag": "study-notes",
    "sort": "evidence",
    "limit": 50,
    "offset": 0
  },
  "total": 16,
  "items": [
    {
      "id": "cand_9fbe34771e94ca4f",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Study Notes - Export semantic pa",
      "name_source": "registry",
      "branches": {
        "primary": "productivity/knowledge/notes",
        "secondary": [],
        "method_version": "placement-ai/2",
        "tree_version": "tree/3",
        "placed_at": "2026-10-17T23:50:28.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": false,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": false,
          "answers_now": true,
          "registry_payers_at_least_5": false,
          "curated_catalogue": false
        }
      },
      "host": "www.mahastrategies.com",
      "provider": "mahastrategies.com",
      "url": "https://www.mahastrategies.com/api/v1/context/study-notes/export-semantic-parity",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "context",
        "study-notes",
        "export-semantic-parity",
        "record-quality",
        "typed-metadata"
      ],
      "category": null,
      "price_usd": 0.039296,
      "price_source": "registry",
      "provider_endpoints": 1158,
      "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": "2026-10-17T06:50:25.000Z",
        "monitoring_days": 1.3,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T14:20:44.881Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 146
        }
      },
      "registry_usage": {
        "calls_30d": 1,
        "unique_payers_30d": 1,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T14:20:44.881Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T06:50:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-18T07:05:05.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_9fbe34771e94ca4f",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_9fbe34771e94ca4f"
      }
    },
    {
      "id": "cand_653f2dd71b5b5e0d",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Study Notes - Provenance edge au",
      "name_source": "registry",
      "branches": {
        "primary": "other",
        "secondary": [],
        "method_version": "placement-rules/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T01:25:28.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": false,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": false,
          "answers_now": true,
          "registry_payers_at_least_5": false,
          "curated_catalogue": false
        }
      },
      "host": "www.mahastrategies.com",
      "provider": "mahastrategies.com",
      "url": "https://www.mahastrategies.com/api/v1/context/study-notes/provenance-edge-audit",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "context",
        "study-notes",
        "provenance-edge-audit",
        "record-quality",
        "typed-metadata"
      ],
      "category": null,
      "price_usd": 0.045296,
      "price_source": "registry",
      "provider_endpoints": 1158,
      "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": "2026-10-17T06:50:25.000Z",
        "monitoring_days": 1.3,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 1,
        "missed_30d": 0,
        "pass_rate": 1,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T13:05:40.882Z",
          "result": "payment_required",
          "passed": true,
          "http_status": 402,
          "duration_ms": 544
        }
      },
      "registry_usage": {
        "calls_30d": 1,
        "unique_payers_30d": 1,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": {
        "current_since": "2026-10-17T13:05:40.882Z",
        "changes_30d": 0,
        "changes_90d": 0,
        "pay_to_changes_90d": 0,
        "last_change_at": null,
        "last_change_kinds": [],
        "window_start": "2026-10-17T06:50:25.000Z",
        "limited": true
      },
      "registry_listing": {
        "last_seen_at": "2026-10-18T07:05:05.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_653f2dd71b5b5e0d",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_653f2dd71b5b5e0d"
      }
    },
    {
      "id": "cand_5ae6ebcdf9ed1419",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "Study Notes - Scope boundary aud",
      "name_source": "registry",
      "branches": {
        "primary": "other",
        "secondary": [],
        "method_version": "placement-rules/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T01:20:28.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": false,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": false,
          "answers_now": false,
          "registry_payers_at_least_5": false,
          "curated_catalogue": false
        }
      },
      "host": "www.mahastrategies.com",
      "provider": "mahastrategies.com",
      "url": "https://www.mahastrategies.com/api/v1/context/study-notes/scope-boundary-audit",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "context",
        "study-notes",
        "scope-boundary-audit",
        "record-quality",
        "typed-metadata"
      ],
      "category": null,
      "price_usd": 0.038296,
      "price_source": "registry",
      "provider_endpoints": 1158,
      "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": "2026-10-17T07:00:25.000Z",
        "monitoring_days": 1.3,
        "limited_evidence": true,
        "checks_30d": 1,
        "passed_30d": 0,
        "missed_30d": 0,
        "pass_rate": 0,
        "freshness": "fresh",
        "last_check": {
          "at": "2026-10-17T20:25:35.944Z",
          "result": "client_error",
          "passed": false,
          "http_status": 404,
          "duration_ms": 122
        }
      },
      "registry_usage": {
        "calls_30d": 1,
        "unique_payers_30d": 1,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": null,
      "registry_listing": {
        "last_seen_at": "2026-10-18T07:05:05.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_5ae6ebcdf9ed1419",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_5ae6ebcdf9ed1419"
      }
    },
    {
      "id": "cand_1b2f2783521bacfd",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "www.mahastrategies.com",
      "name_source": "registry",
      "branches": {
        "primary": "other",
        "secondary": [],
        "method_version": "placement-rules/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T01:10:28.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": false,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": false,
          "answers_now": null,
          "registry_payers_at_least_5": false,
          "curated_catalogue": false
        }
      },
      "host": "www.mahastrategies.com",
      "provider": "mahastrategies.com",
      "url": "https://www.mahastrategies.com/api/v1/context/study-notes/revision-delta-map",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "context",
        "study-notes",
        "revision-delta-map",
        "record-quality",
        "typed-metadata"
      ],
      "category": null,
      "price_usd": 0.021296,
      "price_source": "registry",
      "provider_endpoints": 1158,
      "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": "2026-10-17T09:25:28.000Z",
        "monitoring_days": 1.2,
        "limited_evidence": true,
        "checks_30d": 0,
        "passed_30d": 0,
        "missed_30d": 0,
        "pass_rate": null,
        "freshness": "no_data",
        "last_check": null
      },
      "registry_usage": {
        "calls_30d": 1,
        "unique_payers_30d": 1,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": null,
      "registry_listing": {
        "last_seen_at": "2026-10-18T08:55:05.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_1b2f2783521bacfd",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_1b2f2783521bacfd"
      }
    },
    {
      "id": "cand_275184f3169fe787",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "www.mahastrategies.com",
      "name_source": "registry",
      "branches": {
        "primary": "other",
        "secondary": [],
        "method_version": "placement-rules/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T01:10:28.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": false,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": false,
          "answers_now": null,
          "registry_payers_at_least_5": false,
          "curated_catalogue": false
        }
      },
      "host": "www.mahastrategies.com",
      "provider": "mahastrategies.com",
      "url": "https://www.mahastrategies.com/api/v1/context/study-notes/condition-coverage-map",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "context",
        "study-notes",
        "condition-coverage-map",
        "record-quality",
        "typed-metadata"
      ],
      "category": null,
      "price_usd": 0.035048,
      "price_source": "registry",
      "provider_endpoints": 1158,
      "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": "2026-10-17T09:25:28.000Z",
        "monitoring_days": 1.2,
        "limited_evidence": true,
        "checks_30d": 0,
        "passed_30d": 0,
        "missed_30d": 0,
        "pass_rate": null,
        "freshness": "no_data",
        "last_check": null
      },
      "registry_usage": {
        "calls_30d": 1,
        "unique_payers_30d": 1,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": null,
      "registry_listing": {
        "last_seen_at": "2026-10-18T08:55:05.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_275184f3169fe787",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_275184f3169fe787"
      }
    },
    {
      "id": "cand_27924428cd6cf45c",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "www.mahastrategies.com",
      "name_source": "registry",
      "branches": {
        "primary": "compute/code-execution",
        "secondary": [],
        "method_version": "placement-rules/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T01:10:28.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": false,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": false,
          "answers_now": null,
          "registry_payers_at_least_5": false,
          "curated_catalogue": false
        }
      },
      "host": "www.mahastrategies.com",
      "provider": "mahastrategies.com",
      "url": "https://www.mahastrategies.com/api/v1/context/study-notes/duplicate-record-identities",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "context",
        "study-notes",
        "duplicate-record-identities",
        "record-quality",
        "typed-metadata"
      ],
      "category": null,
      "price_usd": 0.010296,
      "price_source": "registry",
      "provider_endpoints": 1158,
      "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": "2026-10-17T09:25:28.000Z",
        "monitoring_days": 1.2,
        "limited_evidence": true,
        "checks_30d": 0,
        "passed_30d": 0,
        "missed_30d": 0,
        "pass_rate": null,
        "freshness": "no_data",
        "last_check": null
      },
      "registry_usage": {
        "calls_30d": 1,
        "unique_payers_30d": 1,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": null,
      "registry_listing": {
        "last_seen_at": "2026-10-18T08:55:05.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_27924428cd6cf45c",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_27924428cd6cf45c"
      }
    },
    {
      "id": "cand_27dd437ee9607d50",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "www.mahastrategies.com",
      "name_source": "registry",
      "branches": {
        "primary": "documents/conversion",
        "secondary": [],
        "method_version": "placement-rules/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T01:10:28.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": false,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": false,
          "answers_now": null,
          "registry_payers_at_least_5": false,
          "curated_catalogue": false
        }
      },
      "host": "www.mahastrategies.com",
      "provider": "mahastrategies.com",
      "url": "https://www.mahastrategies.com/api/v1/context/study-notes/unit-label-consistency",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "context",
        "study-notes",
        "unit-label-consistency",
        "record-quality",
        "typed-metadata"
      ],
      "category": null,
      "price_usd": 0.012296,
      "price_source": "registry",
      "provider_endpoints": 1158,
      "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": "2026-10-17T09:25:28.000Z",
        "monitoring_days": 1.2,
        "limited_evidence": true,
        "checks_30d": 0,
        "passed_30d": 0,
        "missed_30d": 0,
        "pass_rate": null,
        "freshness": "no_data",
        "last_check": null
      },
      "registry_usage": {
        "calls_30d": 1,
        "unique_payers_30d": 1,
        "note": "Reported by the registry; not our measurement."
      },
      "payment_terms": null,
      "registry_listing": {
        "last_seen_at": "2026-10-18T08:55:05.000Z",
        "listed": true
      },
      "links": {
        "page": "https://agentservicedirectory.com/services/cand_27dd437ee9607d50",
        "api": "https://agentservicedirectory.com/api/v1/services/cand_27dd437ee9607d50"
      }
    },
    {
      "id": "cand_2cd8c211dfda81b7",
      "tier": "discovered",
      "type": "api_endpoint",
      "name": "www.mahastrategies.com",
      "name_source": "registry",
      "branches": {
        "primary": "other",
        "secondary": [],
        "method_version": "placement-rules/3",
        "tree_version": "tree/3",
        "placed_at": "2026-10-18T01:10:28.000Z"
      },
      "package": null,
      "directory": {
        "in_directory": false,
        "method_version": "listing-criteria/3",
        "criteria": {
          "says_what_it_does": false,
          "answers_now": null,
          "registry_payers_at_least_5": false,
          "curated_catalogue": false
        }
      },
      "host": "www.mahastrategies.com",
      "provider": "mahastrategies.com",
      "url": "https://www.mahastrategies.com/api/v1/context/study-notes/timestamp-order-audit",
      "method": "POST",
      "templated_url": false,
      "operator": null,
      "tags": [
        "context",
        "study-notes",
        "timestamp-order-audit",
        "record-quality",
        "typed-metadata"
      ],
      "category": null,
      "price_usd": 0.015296,
      "price_source": "registry",
      "provider_endpoints": 1158,
      "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": "2026-10-17T09:25:28.000Z",
        "monitoring_days": 1.2,
        "limited_evidence": true,
        "checks_30d": 0,
        "passed_30d": 0,
        "missed_30d": 0,
        "pass_rate": null,
        "freshness": "no_data",
        "last_check": null
      },
      "registry_usage": {
        "calls_30d": 1,
        "unique_payers_30d": 1,
        "note": "Reported by the registry; not our measurement."
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