MarketPulse

Live 402 challenge

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

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://marketpulse.theaslangroupllc.com/api/market/email-sequence",
      "description": "What should email #2 say — and when should it send? A complete, ready-to-use email sequence with real subject lines, preview text, send timing and body outlines for welcome, nurture, abandoned-cart, post-purchase or re-engagement flows, plus deliverability rules and the metrics to watch, for a given product and goal. For lifecycle and marketing agents.",
      "maxAmountRequired": "150000",
      "maxTimeoutSeconds": 300
    }
  ],
  "x402Version": 1
}

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": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
    "amount": "150000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
    },
    "payTo": "985iFjbnGQ3dJcwXnfRCMSrH4Jnc3kW1N6msR64B5KX1",
    "amount": "150000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "goal": {
            "type": "string",
            "example": "convert trial to paid",
            "required": true,
            "description": "What this sequence should accomplish"
          },
          "lang": {
            "type": "string",
            "example": "en",
            "required": false,
            "description": "Language to respond in — defaults to English"
          },
          "product": {
            "type": "string",
            "example": "online accounting software",
            "required": true,
            "description": "The product or service the sequence is selling or supporting"
          },
          "sequence_type": {
            "type": "string",
            "example": "nurture",
            "required": false,
            "description": "Type of sequence to write — welcome, nurture, abandoned_cart, post_purchase, or re_engagement"
          }
        }
      },
      "output": {
        "type": "json",
        "example": {
          "goal": "convert trial to paid",
          "sequence": [
            {
              "cta": "Connect your bank account",
              "angle": "Remove friction on the single highest-value activation step",
              "send_timing": "immediately",
              "body_outline": "Reminds them why they signed up, shows the 90-second bank-connect flow, links directly to it",
              "email_number": 1,
              "preview_text": "This is the step that saves you 3 hours a month",
              "subject_line": "Quick win: connect your bank in 90 seconds",
              "why_this_timing": "Trial users who activate in the first 24 hours convert to paid at a much higher rate"
            }
          ],
          "disclaimer": "Email performance benchmarks vary by industry and list quality. Warm new domains/IPs before sending at scale.",
          "amazon_search": "Email Persuasion by Ian Brodie",
          "sequence_type": "nurture",
          "audience_profile": "Active trial users who haven't connected a bank account yet — the key activation step",
          "metrics_to_watch": [
            "Bank-connect completion rate after email 1",
            "Trial-to-paid conversion rate by day 14"
          ],
          "segmentation_note": "Split by whether the bank-connect step is complete — completed users get feature-adoption emails instead",
          "subject_line_bank": [
            "You're 1 step from automated bookkeeping",
            "Still doing this by hand?"
          ],
          "product_or_service": "online accounting software",
          "deliverability_rules": [
            "Warm new sending domains gradually before sending at full trial volume",
            "Keep unsubscribe rate under 0.5% per send"
          ],
          "unsubscribe_reduction": "Offer a 'reduce frequency' option in the preference center instead of only unsubscribe"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema"
    }
  },
  "builder-code": {
    "info": {
      "a": "bc_gxy6qn5p"
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "a": {
          "type": "string",
          "pattern": "^[a-z0-9_]{1,32}$",
          "description": "App builder code"
        },
        "s": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$"
          },
          "description": "Service builder codes"
        },
        "w": {
          "type": "string",
          "pattern": "^[a-z0-9_]{1,32}$",
          "description": "Wallet builder code"
        }
      },
      "additionalProperties": false
    }
  }
}

Provenance

Seen in the source catalog

2026-07-03 20:29Z

Last indexed by Roundhouse

2026-08-02 20:00Z

Last enriched (probe, favicon, geo)

2026-09-11 06:15Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402