api.stacktr.ee

Live 402 challenge

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

{
  "docs": "https://stacktr.ee/auth.md",
  "error": "X-PAYMENT header is required",
  "price": "$1.00",
  "rails": [
    {
      "how": "Send a base64 PAYMENT-SIGNATURE header. USDC on Base (an EIP-3009 authorization) or on Solana (an `exact` transfer sponsored by the facilitator fee payer in extra.feePayer). Both entries are in the accepts array of the PAYMENT-REQUIRED header on this 402, Base first; read it there for the exact terms, not from the v1 accepts in this body, which is Base only.",
      "live": true,
      "spec": "https://github.com/coinbase/x402",
      "protocol": "x402"
    },
    {
      "how": "Send Authorization: Payment <credential> (Machine Payments Protocol). The evm method settles over the live x402 rail (EIP-3009 USDC on Base): register the evm method with the Base USDC asset in your mppx config, then `mppx <url> -X POST`. Stripe Shared Payment Token also accepted where that rail is enabled.",
      "live": true,
      "spec": "https://mpp.dev",
      "protocol": "mpp"
    },
    {
      "how": "POST { \"acp_shared_payment_token\": \"spt_...\" }. Stacktree redeems the Stripe Shared Payment Token as an ACP-compatible seller.",
      "live": false,
      "spec": "https://www.agenticcommerce.dev",
      "protocol": "acp"
    },
    {
      "how": "POST { \"ap2_mandate\": {...} }. Accepts an AP2 mandate (the payment layer behind UCP and Google agentic surfaces), including human-not-present.",
      "live": false,
      "spec": "https://ap2-protocol.org",
      "protocol": "ap2"
    }
  ],
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xcc985ba6934d134feec4824ba40258608f3a4333",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://api.stacktr.ee/provision",
      "description": "Stacktree x402 payment (1000000 USDC atomic units).",
      "maxAmountRequired": "1000000",
      "maxTimeoutSeconds": 120
    }
  ],
  "unlocks": [
    {
      "label": "Make a specific site permanent (cancel its expiry).",
      "price": "$5.00",
      "renews": false,
      "feature": "make_permanent",
      "perSite": true
    },
    {
      "label": "Serve sites on your own custom domain.",
      "price": "$5.00 / 30 days",
      "renews": true,
      "feature": "custom_domain",
      "perSite": false
    },
    {
      "label": "Fleet limits: 1 GB per site, unlimited daily publishes, no page cap, permanent pages.",
      "price": "$25.00 / 30 days",
      "renews": true,
      "feature": "higher_limits",
      "perSite": false
    }
  ],
  "resource": "A persistent Stacktree API key (stk_live_...). Send it as Authorization: Bearer to publish sites that do not expire.",
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {},
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "usage": "Authorization: Bearer stk_live_…",
            "api_key": "stk_live_…"
          }
        }
      },
      "tags": [
        "html",
        "hosting",
        "publishing",
        "private",
        "static-site",
        "share-link",
        "agents"
      ],
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "type": "object",
            "properties": {
              "body": {
                "type": "object",
                "properties": {
                  "ap2_mandate": {
                    "type": "object",
                    "description": "AP2 rail: an AP2 mandate object."
                  },
                  "acp_shared_payment_token": {
                    "type": "string",
                    "description": "ACP rail: a Stripe Shared Payment Token (spt_...)."
                  }
                },
                "description": "Optional JSON body. Payment is carried in the PAYMENT-SIGNATURE header (x402 v2), so no body is required. Fields apply only to the token-carried rails (ACP / AP2)."
              }
            }
          },
          "output": {
            "type": "object",
            "properties": {
              "example": {
                "type": "object",
                "properties": {
                  "ok": {
                    "type": "boolean"
                  },
                  "usage": {
                    "type": "string",
                    "description": "How to use the key, e.g. \"Authorization: Bearer stk_live_...\"."
                  },
                  "prefix": {
                    "type": "string"
                  },
                  "api_key": {
                    "type": "string",
                    "description": "The provisioned stk_live_ API key, shown once."
                  },
                  "protocol": {
                    "type": "string"
                  }
                },
                "description": "Returned once payment settles."
              }
            }
          }
        }
      },
      "description": "Buy a persistent Stacktree API key ($1.00, shown once). Send it as Authorization: Bearer to publish HTML pages to private, unguessable links. For a single page, POST /publish ($0.50) is the cheaper rung — no key at all.",
      "serviceName": "Stacktree — provision",
      "serviceRecord": "https://api.stacktr.ee/.well-known/x402-service"
    }
  },
  "x402Version": 1,
  "human_fallback": {
    "how": "Returns a short URL + a ready-to-print terminal QR. A human scans it, pays by card (Stripe), and your poll returns the API key. Works for unlocks too (pass your API key + the feature).",
    "create": "POST https://api.stacktr.ee/pay/sessions { \"feature\": \"provision\" }"
  }
}

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",
      "version": "2"
    },
    "payTo": "0xcc985ba6934d134feec4824ba40258608f3a4333",
    "amount": "1000000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
    },
    "payTo": "Gr8z3Dh74y4nJJAW25r2WSmzm3ZQr2n5GU5qjavFG49c",
    "amount": "1000000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {},
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "usage": "Authorization: Bearer stk_live_…",
          "api_key": "stk_live_…"
        }
      }
    },
    "tags": [
      "html",
      "hosting",
      "host",
      "web-page",
      "publishing",
      "private",
      "static-site",
      "api-key",
      "share-link",
      "agents"
    ],
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "type": "object",
          "properties": {
            "body": {
              "type": "object",
              "properties": {
                "ap2_mandate": {
                  "type": "object",
                  "description": "AP2 rail: an AP2 mandate object."
                },
                "acp_shared_payment_token": {
                  "type": "string",
                  "description": "ACP rail: a Stripe Shared Payment Token (spt_...)."
                }
              },
              "description": "Optional JSON body. Payment is carried in the PAYMENT-SIGNATURE header (x402 v2), so no body is required. Fields apply only to the token-carried rails (ACP / AP2)."
            }
          }
        },
        "output": {
          "type": "object",
          "properties": {
            "example": {
              "type": "object",
              "properties": {
                "ok": {
                  "type": "boolean"
                },
                "usage": {
                  "type": "string",
                  "description": "How to use the key, e.g. \"Authorization: Bearer stk_live_...\"."
                },
                "prefix": {
                  "type": "string"
                },
                "api_key": {
                  "type": "string",
                  "description": "The provisioned stk_live_ API key, shown once."
                },
                "protocol": {
                  "type": "string"
                }
              },
              "description": "Returned once payment settles."
            }
          }
        }
      }
    },
    "description": "Buy a persistent Stacktree API key ($1.00, shown once) for hosting HTML pages as private, shareable web pages. Send it as Authorization: Bearer to publish reports, dashboards, landing pages and static sites to permanent unguessable links, and to update them at the same URL. For a single page, POST /publish ($0.50) needs no key at all.",
    "serviceName": "Stacktree — provision",
    "serviceRecord": "https://api.stacktr.ee/.well-known/x402-service"
  }
}

Provenance

Seen in the source catalog

2026-09-12 01:03Z

Last indexed by Roundhouse

2026-09-24 14:50Z

Last enriched (probe, favicon, geo)

2026-09-10 07:15Z

x402 version

2

Max timeout

120s

Liveness probe

HTTP 402