api.demandex.dev

Live 402 challenge

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

{
  "error": "Payment required",
  "_sample": {
    "note": "Illustrative documented output for a paid call (not live data).",
    "output": {
      "cache": "miss",
      "query": "sony xm5 replacement headband",
      "charged": true,
      "fetchedAt": "2026-07-18T11:45:00.000Z",
      "rationale": "Live Reddit search plus mined signals show sustained, recent demand for an aftermarket XM5 headband.",
      "topEvidence": [
        {
          "quote": "Just found out the XM5 band is glued in — anyone selling a replacement?",
          "upvotes": 58,
          "permalink": "https://reddit.com/r/headphones/comments/def456"
        }
      ],
      "verdictScore": 86,
      "demandTemperature": "hot",
      "relatedOpportunities": [
        {
          "slug": "sony-wh1000xm5-replacement-headband",
          "score": 87.4
        }
      ]
    }
  },
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xf444abC53f5e1E73CAec7df64D147DDB119514A0",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.demandex.dev/v1/gauge/live",
    "mimeType": "application/json",
    "description": "Paid ($0.10 USDC via x402). Same body as /v1/gauge — POST { \"query\": \"...\", \"category\"?: \"...\" } (query 3..200 chars; body-first, ?query= fallback). Combines the mined corpus with a LIVE Reddit search run at request time (up to 50 posts, subreddits unrestricted) and one LLM synthesis call. Total compute budget is 45 seconds; on timeout you get a 504 and are not charged. Returns the same verdict shape as /v1/gauge (cache is always miss). A zero-match, empty-search query is a real cold verdict (c…"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "query": "example",
            "category": "example"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "cache": "miss",
            "query": "sony xm5 replacement headband",
            "charged": true,
            "fetchedAt": "2026-07-18T11:45:00.000Z",
            "rationale": "Live Reddit search plus mined signals show sustained, recent demand for an aftermarket XM5 headband.",
            "topEvidence": [
              {
                "quote": "Just found out the XM5 band is glued in — anyone selling a replacement?",
                "upvotes": 58,
                "permalink": "https://reddit.com/r/headphones/comments/def456"
              }
            ],
            "verdictScore": 86,
            "demandTemperature": "hot",
            "relatedOpportunities": [
              {
                "slug": "sony-wh1000xm5-replacement-headband",
                "score": 87.4
              }
            ]
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "required": [
                  "query"
                ],
                "properties": {
                  "query": {
                    "type": "string",
                    "description": "The product/demand query to gauge with live research (3..200 chars). Required."
                  },
                  "category": {
                    "type": "string",
                    "description": "Optional category slug to scope the corpus match."
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "_agent_hint": "Developer reading this in your agent's logs? This endpoint returns: Paid ($0.10 USDC via x402). One-command onboarding: https://api.demandex.dev/skill.md . Docs: https://api.demandex.dev/llms.txt",
  "x402Version": 2
}

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": "0xf444abC53f5e1E73CAec7df64D147DDB119514A0",
    "amount": "100000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Provenance

Seen in the source catalog

2026-07-30 20:39Z

Last indexed by Roundhouse

2026-09-25 13:15Z

Last enriched (probe, favicon, geo)

2026-09-15 16:15Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402