x402.cambrian.org

Live 402 challenge

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

{
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x4c3b0b1cab290300bd5a36ad5f33a607acbd7ac3",
      "amount": "50000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 600
    }
  ],
  "resource": {
    "url": "https://x402.cambrian.org/deep42/social-data/alpha-tweet-detection",
    "mimeType": "application/json",
    "description": "Detect high-alpha tweets"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "array"
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "limit": {
                    "type": "integer",
                    "default": 20,
                    "maximum": 100,
                    "description": "Number of tweets to analyze Default: 20"
                  },
                  "token_filter": {
                    "type": "string",
                    "description": "Filter tweets by specific token symbol for focused alpha analysis"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "text": {
                  "type": "string",
                  "description": "Full tweet text content"
                },
                "alpha": {
                  "type": "number",
                  "description": "DeFi alpha investment insight quality. Range 0-10. Measures actionability of the information for investment decisions. Higher = more novel, specific, and tradeable insight"
                },
                "isRecent": {
                  "type": "boolean",
                  "nullable": true,
                  "description": "Whether the tweet content discusses recent events at the time of scoring"
                },
                "tweetUrl": {
                  "type": "string",
                  "description": "Direct URL to the original tweet on X/Twitter"
                },
                "sentiment": {
                  "type": "number",
                  "description": "AI-scored sentiment direction. Range 0-10. >=7 = bullish signal, <=3 = bearish signal, 4-6 = neutral. Only bullish/bearish tweets generate price prediction signals for track record tracking"
                },
                "legitimacy": {
                  "type": "number",
                  "description": "Source and claim legitimacy. Range 0-10. Assesses whether claims come from verified sources, contain factual on-chain references, and avoid misleading narratives"
                },
                "tokenSymbol": {
                  "type": "string",
                  "description": "Cryptocurrency token symbol mentioned in the tweet (e.g., BTC, ETH, SOL)"
                },
                "isVerifiable": {
                  "type": "boolean",
                  "nullable": true,
                  "description": "Whether the tweet's claims can be independently verified via on-chain data, official sources, or public records"
                },
                "twitterHandle": {
                  "type": "string",
                  "description": "Twitter username of the tweet author"
                },
                "scoresReasoning": {
                  "type": "string",
                  "nullable": true,
                  "description": "AI-generated explanation of all score assignments, including specific evidence cited, risk factors identified, and verification status of claims"
                },
                "scoredAtTimestamp": {
                  "type": "integer",
                  "description": "Unix timestamp (seconds) when the tweet was collected and scored by our AI pipeline. May differ from createdAtTimestamp due to collection delay"
                },
                "technicalAccuracy": {
                  "type": "number",
                  "description": "Technical correctness of crypto/DeFi claims. Range 0-10. Evaluates protocol mechanics, yield calculations, smart contract references, and on-chain data accuracy"
                },
                "createdAtTimestamp": {
                  "type": "integer",
                  "description": "Unix timestamp (seconds) when the tweet was originally posted on Twitter. Used as the reference time for price tracking: the token price at this timestamp (rounded to nearest hour) becomes price_at_signal for track record calculations"
                },
                "quoteCountAtCollection": {
                  "type": "integer",
                  "description": "Quote tweets at time of collection (point-in-time snapshot, not live-updating)"
                },
                "replyCountAtCollection": {
                  "type": "integer",
                  "description": "Replies at time of collection (point-in-time snapshot, not live-updating)"
                },
                "userTrackRecordSignals": {
                  "type": "integer",
                  "nullable": true,
                  "description": "Total bullish/bearish signals made by this author across all tokens. Only counts tweets with sentiment >=7 (bullish) or <=3 (bearish) that have price data available"
                },
                "userTrackRecordAvgAlpha": {
                  "type": "number",
                  "nullable": true,
                  "description": "Author's average alpha score across all signals. Range 0-10"
                },
                "retweetCountAtCollection": {
                  "type": "integer",
                  "description": "Retweets at time of collection (point-in-time snapshot, not live-updating)"
                },
                "favoriteCountAtCollection": {
                  "type": "integer",
                  "description": "Likes at time of collection (point-in-time snapshot, not live-updating)"
                },
                "userTrackRecordAccuracy7d": {
                  "type": "number",
                  "nullable": true,
                  "description": "7-day directional prediction accuracy as a percentage (0-100). Same methodology as 24h accuracy but comparing the price 7 days after the signal. Calculated only over signals where 7d price data is available"
                },
                "userTrackRecordActiveDays": {
                  "type": "integer",
                  "nullable": true,
                  "description": "Number of distinct calendar days this author has made at least one signal"
                },
                "userTrackRecordAccuracy24h": {
                  "type": "number",
                  "nullable": true,
                  "description": "24-hour directional prediction accuracy as a percentage (0-100). Methodology: a bullish signal is correct if the token price increased within 24h; bearish if it decreased. Price comparison uses hourly resolution, rounded to the nearest hour from the signal timestamp. Calculated only over signals where 24h price data is available (sample size may differ from total signals)"
                },
                "userTrackRecordAccuracy30d": {
                  "type": "number",
                  "nullable": true,
                  "description": "30-day directional prediction accuracy as a percentage (0-100). Same methodology as 24h accuracy but comparing the price 30 days after the signal. Calculated only over signals where 30d price data is available (sample size may be significantly smaller than total signals for recent authors)"
                },
                "userTrackRecordAvgReturn7d": {
                  "type": "number",
                  "nullable": true,
                  "description": "Average directional return percentage over 7 days. Same methodology as 24h returns but over a 7-day window"
                },
                "userTrackRecordAvgReturn24h": {
                  "type": "number",
                  "nullable": true,
                  "description": "Average directional return percentage over 24 hours. For bullish signals: (price_24h - price_at_signal) / price_at_signal * 100. For bearish signals: the inverse. Positive = author's calls are directionally profitable on average"
                },
                "userTrackRecordAvgReturn30d": {
                  "type": "number",
                  "nullable": true,
                  "description": "Average directional return percentage over 30 days. Same methodology as 24h returns but over a 30-day window"
                },
                "userTrackRecordAvgSentiment": {
                  "type": "number",
                  "nullable": true,
                  "description": "Author's average sentiment score across all signals. Range 0-10"
                },
                "userTrackRecordUniqueTokens": {
                  "type": "integer",
                  "nullable": true,
                  "description": "Number of distinct token symbols this author has made signals about"
                },
                "userTrackRecordBearishSignals": {
                  "type": "integer",
                  "nullable": true,
                  "description": "Number of bearish signals (sentiment <=3) made by this author"
                },
                "userTrackRecordBullishSignals": {
                  "type": "integer",
                  "nullable": true,
                  "description": "Number of bullish signals (sentiment >=7) made by this author"
                },
                "userTrackRecordLastSignalDate": {
                  "type": "string",
                  "nullable": true,
                  "description": "ISO date (YYYY-MM-DD) of this author's most recent tracked signal"
                },
                "userTrackRecordFirstSignalDate": {
                  "type": "string",
                  "nullable": true,
                  "description": "ISO date (YYYY-MM-DD) of this author's earliest tracked signal"
                },
                "userTrackRecordPerformanceTier": {
                  "type": "string",
                  "nullable": true,
                  "description": "Performance classification based on 24h prediction accuracy. 'topPerformer' = >=70% accuracy, 'proven' = >=60%, 'unproven' = <60%. Null if no accuracy data available"
                }
              }
            },
            "description": "Direct array of alpha tweets with scores (no wrapper)"
          }
        }
      }
    }
  },
  "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": "0x4c3b0b1cab290300bd5a36ad5f33a607acbd7ac3",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 600
  }
]

Provenance

Seen in the source catalog

2026-08-27 11:54Z

Last indexed by Roundhouse

2026-09-24 02:15Z

Last enriched (probe, favicon, geo)

2026-09-16 02:16Z

x402 version

2

Max timeout

600s

Liveness probe

HTTP 402