api.sourcestrand.com

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "x402": {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "price": "$0.03",
          "version": "2"
        },
        "payTo": "0xCc28F533F7ED90B8B98b5E9614B96138e790267F",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://api.sourcestrand.com/v1/paid/tw-data-packs/factory-operational-risk",
      "tags": [
        "taiwan-data",
        "factory-risk",
        "operational-risk",
        "power-grid",
        "drought-stress",
        "air-quality",
        "environment-site-flags",
        "record-backed-pack",
        "official-source-records",
        "english-field-map",
        "buyer-pack",
        "paid-data-product"
      ],
      "mimeType": "application/json",
      "description": "Taiwan factory operational risk pack. Factory registry, grid margin, drought, air-quality, and environment site streams for operational context with source lineage and limitations.",
      "serviceName": "Taiwan Factory Operational Risk Pack"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "product": "tw_factory_operational_risk_pack",
              "streams": [],
              "limitations": [],
              "data_lineage": [],
              "agent_handoff": {},
              "package_scope": {
                "tier": "paid_pack"
              },
              "record_backed_pack": {}
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "properties": {}
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        },
        "routeTemplate": "/v1/paid/tw-data-packs/factory-operational-risk"
      }
    },
    "x402Version": 2
  },
  "error": "PAYMENT_REQUIRED",
  "price": "$0.03",
  "reason": "missing_payment_header",
  "message": "Payment is required.",
  "product_metadata": {
    "price": "$0.03",
    "title": "Taiwan Factory Operational Risk Pack",
    "not_for": [
      "A facility uptime guarantee, production-capacity certification, insurance risk score, or site safety clearance.",
      "A substitute for supplier audit, engineering due diligence, environmental review, or legal advice.",
      "Credit scoring, procurement decisioning, investment advice, or trading advice."
    ],
    "pack_type": "record_backed_buyer_pack",
    "product_id": "tw_factory_operational_risk_pack",
    "preview_url": "https://api.sourcestrand.com/v1/preview/tw-data-packs/factory-operational-risk",
    "deeper_packs": [
      {
        "pack_id": "tw_semiconductor_supplier_search",
        "use_when": "The buyer is screening semiconductor or hardware suppliers by role, city, science park, or segment.",
        "endpoint_template": "https://api.sourcestrand.com/v1/paid/tw-semiconductor/supplier-search?q={keyword}"
      },
      {
        "pack_id": "tw_company_brief",
        "use_when": "The buyer has a business_id from a factory or supplier candidate and needs company-level context.",
        "endpoint_template": "https://api.sourcestrand.com/v1/paid/tw-company/brief?business_id={business_id}"
      },
      {
        "pack_id": "tw_compliance_risk_pack",
        "use_when": "The buyer wants public compliance, labor, environment, and ESG streams attached to operational context.",
        "endpoint_template": "https://api.sourcestrand.com/v1/paid/tw-data-packs/compliance-risk"
      }
    ],
    "best_fit_buyers": [
      "Hardware, semiconductor, and sourcing teams adding public operational context around Taiwan supplier sites.",
      "AI agents preparing a site-context packet before requesting company or semiconductor paid endpoints.",
      "Market-entry analysts comparing factory footprint, grid, water, air-quality, and environmental public-record streams."
    ],
    "paid_response_delta": [
      "Full factory operational context pack covering factory registry, grid margin, drought, air-quality, environmental site, and labor event stream contracts.",
      "Record shape examples, key fields, English payload fields, source refresh cadence, and storage policy for site-context workflows.",
      "Operational-context boundary language that avoids uptime guarantees, facility certification, or risk scoring.",
      "Agent handoff notes for preserving location, provider, refresh cadence, source-language values, and limitations."
    ]
  },
  "payment_instructions": {
    "asset": "USD Coin",
    "price": "$0.03",
    "reason": "missing_payment_header",
    "network": "eip155:8453",
    "protocol": "x402",
    "diagnosis": {
      "issue_type": "needs_x402_client_retry",
      "likely_cause": "The request did not include an x-payment header. This is expected for the first x402 handshake, and also happens when a human clicks a paid endpoint in a normal browser or a client uses plain fetch without x402 retry support.",
      "operator_note": "Treat this as buyer friction or an integration handoff gap unless it repeats after the buyer says they used an x402-capable client."
    },
    "client_hint": "Use an x402-compatible client such as @x402/fetch, or this repo's npm run x402:paid-gateway smoke client.",
    "pay_now_url": "https://api.sourcestrand.com/checkout?resource_url=https%3A%2F%2Fapi.sourcestrand.com%2Fv1%2Fpaid%2Ftw-data-packs%2Ffactory-operational-risk",
    "safety_note": "Do not send wallet private keys to this API. The buyer client signs locally and sends the x-payment header.",
    "approval_url": "https://api.sourcestrand.com/checkout?resource_url=https%3A%2F%2Fapi.sourcestrand.com%2Fv1%2Fpaid%2Ftw-data-packs%2Ffactory-operational-risk",
    "browser_note": "Open pay_now_url in a wallet-enabled browser, then choose Pay and Download. The Worker never receives private keys; signing happens in the buyer wallet.",
    "resource_url": "https://api.sourcestrand.com/v1/paid/tw-data-packs/factory-operational-risk",
    "agent_handoff": {
      "approval_url": "https://api.sourcestrand.com/checkout?resource_url=https%3A%2F%2Fapi.sourcestrand.com%2Fv1%2Fpaid%2Ftw-data-packs%2Ffactory-operational-risk",
      "retry_header": "x-payment",
      "payment_intent_url": "https://api.sourcestrand.com/v1/payment/intent?resource_url=https%3A%2F%2Fapi.sourcestrand.com%2Fv1%2Fpaid%2Ftw-data-packs%2Ffactory-operational-risk",
      "with_payment_authority": "Use an x402-capable client to read PAYMENT-REQUIRED, sign locally, and retry resource_url with x-payment.",
      "without_payment_authority": "Return approval_url to the human buyer and wait for consent before spending."
    },
    "human_checkout": {
      "url": "https://api.sourcestrand.com/checkout?resource_url=https%3A%2F%2Fapi.sourcestrand.com%2Fv1%2Fpaid%2Ftw-data-packs%2Ffactory-operational-risk",
      "action": "Pay and Download",
      "expected_result": "The checkout signs locally, retries resource_url with x-payment, and downloads the paid JSON response.",
      "wallet_requirement": "Open this URL in Coinbase Wallet, MetaMask, or another EIP-1193 wallet-enabled browser."
    },
    "checkout_action": "Pay and Download",
    "free_sample_url": null,
    "troubleshooting": [
      "missing_payment_header means no x-payment header was sent; for browser clicks or plain fetch, this is the expected first stop.",
      "invalid_payment_header means the x-payment header could not be decoded.",
      "payment_requirements_mismatch means the signed payment does not match the current resource requirements.",
      "payment_verification_failed or payment_verification_unavailable means the facilitator rejected or could not check the payment.",
      "payment_settlement_failed or payment_settlement_unavailable means verification may have passed but settlement failed or timed out.",
      "Use the same network and asset listed in this response; this production gateway expects Base mainnet."
    ],
    "buyer_next_steps": [
      "Inspect free_preview_url or free_sample_url before paying.",
      "Human browser users should open pay_now_url and choose Pay and Download.",
      "Fund a Base mainnet wallet with the requested USDC asset and enough ETH for gas.",
      "Use an x402-compatible client to call resource_url. The client should read PAYMENT-REQUIRED, sign locally, and retry automatically.",
      "Retry the same resource_url with the x-payment header and a stable x-buyer-hint or buyer_hint query parameter.",
      "If the client already sent x-payment, compare network, asset, amount, and payTo against the fresh x402 accepts in this response."
    ],
    "free_preview_url": "https://api.sourcestrand.com/v1/preview/tw-data-packs/factory-operational-risk?buyer_hint=web-402",
    "smoke_client_env": {
      "NETWORK": "eip155:8453",
      "BUYER_HINT": "partner-or-campaign-name",
      "X402_PRODUCT": "tw_factory_operational_risk_pack",
      "PAID_GATEWAY_BASE_URL": "https://api.sourcestrand.com"
    },
    "buyer_hint_header": "x-buyer-hint: partner-or-campaign-name",
    "payment_intent_url": "https://api.sourcestrand.com/v1/payment/intent?resource_url=https%3A%2F%2Fapi.sourcestrand.com%2Fv1%2Fpaid%2Ftw-data-packs%2Ffactory-operational-risk",
    "x402_resources_url": "https://api.sourcestrand.com/.well-known/x402/resources.json",
    "buyer_hint_query_param": "buyer_hint=partner-or-campaign-name",
    "required_payment_header": "x-payment",
    "browser_wallet_payment_supported": true
  }
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "price": "$0.03",
      "version": "2"
    },
    "payTo": "0xCc28F533F7ED90B8B98b5E9614B96138e790267F",
    "amount": "30000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {}
      },
      "output": {
        "type": "json",
        "example": {
          "product": "tw_factory_operational_risk_pack",
          "streams": [],
          "limitations": [],
          "data_lineage": [],
          "agent_handoff": {},
          "package_scope": {
            "tier": "paid_pack"
          },
          "record_backed_pack": {}
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {}
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    },
    "routeTemplate": "/v1/paid/tw-data-packs/factory-operational-risk"
  }
}

Provenance

Seen in the source catalog

2026-07-13 07:40Z

Last indexed by Roundhouse

2026-07-13 23:40Z

Last enriched (probe, favicon, geo)

2026-09-21 06:45Z

x402 version

2

Max timeout

60s

Liveness probe

HTTP 530