{
  "schema": "404kin-free-report-trial-v1",
  "name": "FIELD Report free trial",
  "status": "FREE_PUBLIC_TRIAL_NOT_NFT_ENTITLEMENT",
  "method": "POST",
  "endpoint": "https://field-404kin.cv5gyqnshz.chatgpt.site/api/field-report/trial",
  "content_type": "application/json",
  "authorization": "None; no wallet, payment, signature or API key",
  "input": {
    "title": "1 to 80 Unicode code points",
    "returns": "2 to 16 finite JSON numbers, each -0.95 <= r <= 5; 0.1 means +10%, not 0.1%; equal spacing assumed",
    "additional_fields": false
  },
  "example_request": {
    "title": "Recovery is not a straight line",
    "returns": [
      0.1,
      -0.5,
      1
    ]
  },
  "response_fields": [
    "status",
    "algorithm",
    "trial_ends_utc",
    "nft_required",
    "nft_entitlement",
    "report",
    "svg",
    "svg_sha256"
  ],
  "arithmetic": "Approximate IEEE-754 binary64 (~15 significant decimal digits), field-trial-binary64-v1; not the separate local Python Decimal prototype",
  "formulas": {
    "equity": "E[0]=1; E[t]=E[t-1]*(1+r[t])",
    "drawdown": "D[t]=(max(E[0..t])-E[t])/max(E[0..t])"
  },
  "constraints": {
    "request_bytes": 8192,
    "free_trial_max_returns": 16,
    "trial_ends_utc": "2026-09-25T03:00:00Z",
    "no_annualization": true,
    "not_investment_advice": true,
    "application_stores_input": false,
    "send_only_synthetic_or_public_data": true,
    "provider_operational_logs_may_exist": true,
    "no_availability_guarantee": true,
    "nft_required": false,
    "current_nft_rights_unchanged": true,
    "tool_registry_registration_complete": false
  },
  "errors": {
    "400": "Invalid input or trial sample limit",
    "405": "Wrong method",
    "410": "Trial ended",
    "413": "Body too large",
    "415": "Use application/json"
  },
  "discovery_limit": "Default Node.js fetch verified on the separate public tools endpoint; earlier Python urllib 403/1010 remains unresolved. No universal compatibility or availability guarantee.",
  "verified_programmatic_endpoint": "https://field-404kin-tools.eric-lee92.workers.dev/api/field-report/trial",
  "client_verification": "/agents/tool-verification.json"
}