Echo Sentiment API

payment-readyonline

payment-ready until 2026-11-22

Pay-per-call XLM (Stellar) + Base market intelligence for AI agents, billed in USDC via x402 (Base + Solana) · no API key, no subscription. 15 paid endpoints from $0.01: XLM sentiment (-1..1), quote/spread, CEX<->SDEX arbitrage scan, multi-asset strategy screen, Stellar network pulse, signed (Ed25519) oracle quotes, market breadth/regime, Base gas oracle, Polymarket pulse, Base wallet intel, sentiment report + history, a 10-credit bundle ($1.00), and a 2,500-credit volume tier ($25.00).

Compare: all sentiment analysis APIs

api.6766587364.lol ↗

Call it x402 v2

x402 v2

Base URL: https://api.6766587364.lol
Payment: x402 v2, header channel

$ curl -i 'https://api.6766587364.lol/v1/arb-opportunities'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 15 paid routes on api.6766587364.lol

GET/v1/arb-opportunitiesBase+Sol$0.10since 09-28

GET/v1/attested-quoteBase+Sol$0.10since 09-28

GET/v1/breadthBase+Sol$0.10since 09-28

GET/v1/bundleBase+Sol$1.00since 09-28

GET/v1/bundle/enterpriseBase+Sol$25.00since 09-28

GET/v1/fngBase+Sol$0.01since 09-28

GET/v1/gasBase+Sol$0.02since 09-28

GET/v1/multi-assetBase+Sol$0.10since 09-28

7 more in Example 402 response

Prices as captured in the 402 response: median $0.10 across the 15 endpoints.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
Method	Path	Description	Price	Network	Asset	402 channel	Captured
GET	/v1/arb-opportunities	Live CEX<->SDEX arbitrage scan (net % after fees)	$0.10	Base+Sol	USDC	header	since 09-28
GET	/v1/attested-quote	Oracle-grade quote: price + Ed25519 signature for verifiable agent data	$0.10	Base+Sol	USDC	header	since 09-28
GET	/v1/breadth	Market regime: top-50 breadth %, avg 24h change, BTC dominance, risk-on/off verdict, XLM relative strength vs BTC/ETH	$0.10	Base+Sol	USDC	header	since 09-28
GET	/v1/bundle	Prepaid bundle: $1.00 -> 10 credits (10 standard calls or 5 premium reports)	$1.00	Base+Sol	USDC	header	since 09-28
GET	/v1/bundle/enterprise	Enterprise volume bundle: $25.00 -> 2,500 credits	$25.00	Base+Sol	USDC	header	since 09-28
GET	/v1/fng	Cheap tick: Crypto Fear & Greed index (0-100) + label + mapped sentiment	$0.01	Base+Sol	USDC	header	since 09-28
GET	/v1/gas	Base gas oracle: price, base fee, priority fee, submit-now verdict	$0.02	Base+Sol	USDC	header	since 09-28
GET	/v1/multi-asset	Strategy screen across major assets (return vs buy-and-hold)	$0.10	Base+Sol	USDC	header	since 09-28
GET	/v1/prediction	Prediction-market pulse: top Polymarket markets by 24h volume + yes-probability	$0.02	Base+Sol	USDC	header	since 09-28
GET	/v1/quote	XLM price + SDEX order book snapshot	$0.10	Base+Sol	USDC	header	since 09-28
GET	/v1/sentiment	Composite XLM market sentiment (-1..1) + live price	$0.10	Base+Sol	USDC	header	since 08-17
GET	/v1/sentiment-history	24h hourly sentiment series (FNG + momentum reconstructed, live order-flow)	$0.25	Base+Sol	USDC	header	since 09-28
GET	/v1/sentiment-report	Premium: full XLM sentiment report (raw components, verdict, arb context)	$0.25	Base+Sol	USDC	header	since 09-28
GET	/v1/wallet	Wallet intel: ENS reverse lookup + tx activity + USDC balance for a Base address	$0.02	Base+Sol	USDC	header	since 09-28
GET	/v1/xlm-network	Stellar on-chain pulse: ledger health, supply, XLM/USDC SDEX trade stats (1h)	$0.10	Base+Sol	USDC	header	since 09-28

Payment evidence

402 payload captured at 2026-09-28 22:53:07 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "8LKmo6366qCUrRHcDPTNoDE7Tx1HGdVP8hMotcRqfNFB",
        "lastValidBlockHeight": "429498543"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "100000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/quote",
    "tags": [
      "crypto",
      "market-data",
      "stellar"
    ],
    "mimeType": "application/json",
    "description": "XLM price + SDEX order book snapshot",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "method": "GET"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "best_ask": 0.0934,
            "best_bid": 0.093,
            "price_usd": 0.0932,
            "spread_pct": 0.43
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "best_ask": {
                    "type": "number"
                  },
                  "best_bid": {
                    "type": "number"
                  },
                  "price_usd": {
                    "type": "number"
                  },
                  "spread_pct": {
                    "type": "number"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Other captured 402 responses (14)

Captured payload 2 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "8LKmo6366qCUrRHcDPTNoDE7Tx1HGdVP8hMotcRqfNFB",
        "lastValidBlockHeight": "429498543"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "100000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/arb-opportunities",
    "tags": [
      "crypto",
      "arbitrage",
      "stellar",
      "market-data"
    ],
    "mimeType": "application/json",
    "description": "Live CEX<->SDEX arbitrage scan (net % after fees)",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "method": "GET"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "ts": 1723000000,
            "rows": [
              {
                "buy": "SDEX @ 0.093000",
                "leg": "SDEX -> Kraken",
                "sell": "Kraken @ 0.093400",
                "net_pct": 0.21
              },
              {
                "buy": "SDEX @ 0.093000",
                "leg": "Korea premium (info)",
                "sell": "Upbit @ 0.094500 (KRW 130)",
                "net_pct": 1.61
              }
            ]
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "ts": {
                    "type": "number"
                  },
                  "rows": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "properties": {
                        "buy": {
                          "type": "string"
                        },
                        "leg": {
                          "type": "string"
                        },
                        "sell": {
                          "type": "string"
                        },
                        "net_pct": {
                          "type": "number"
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "8LKmo6366qCUrRHcDPTNoDE7Tx1HGdVP8hMotcRqfNFB",
        "lastValidBlockHeight": "429498543"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "100000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/multi-asset",
    "tags": [
      "crypto",
      "market-data",
      "strategies",
      "screen"
    ],
    "mimeType": "application/json",
    "description": "Strategy screen across major assets (return vs buy-and-hold)",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "method": "GET"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "ts": 1723000000,
            "rows": [
              {
                "asset": "XLM-USD",
                "sharpe": 1.2,
                "trades": 3,
                "strategy": "SMA crossover",
                "vs_buy_hold_pct": 3.1,
                "total_return_pct": 12.5
              }
            ],
            "period": "3mo",
            "tickers": [
              "XLM-USD",
              "BTC-USD"
            ],
            "cost_bps_per_side": 10
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  },
                  "period": {
                    "type": "string"
                  },
                  "tickers": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "ts": {
                    "type": "number"
                  },
                  "rows": {
                    "type": "array",
                    "items": {
                      "type": "object"
                    }
                  },
                  "period": {
                    "type": "string"
                  },
                  "tickers": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  },
                  "cost_bps_per_side": {
                    "type": "number"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 4 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "EbXzpjmnebDiBNS1aiTLo4gxkefKJL2S6A5VDnhnNsbo",
        "lastValidBlockHeight": "429498544"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "250000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/sentiment-report",
    "tags": [
      "crypto",
      "sentiment",
      "stellar",
      "premium",
      "report"
    ],
    "mimeType": "application/json",
    "description": "Premium: full XLM sentiment report (raw components, verdict, arb context)",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "price": {
              "usd": 0.0932,
              "spread_pct": 0.15
            },
            "detail": {
              "fng_index": 71,
              "momentum_24h_pct": 2.1,
              "order_flow_imbalance": 0.31
            },
            "verdict": "bullish",
            "weights": {
              "fng": 0.3,
              "flow": 0.4,
              "momentum": 0.3
            },
            "sentiment": 0.42,
            "confidence": "high",
            "arb_context": {
              "korea_premium_pct": -0.22,
              "sdex_kraken_net_pct": -0.57
            }
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "price": {
                    "type": "object"
                  },
                  "detail": {
                    "type": "object"
                  },
                  "verdict": {
                    "type": "string"
                  },
                  "weights": {
                    "type": "object"
                  },
                  "sentiment": {
                    "type": "number"
                  },
                  "confidence": {
                    "type": "string"
                  },
                  "arb_context": {
                    "type": "object"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 5 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "6bkhN6e7K6w6b4iMoZJmYMTH1S4qQ7XkQ5v1A2nSZQjQ",
        "lastValidBlockHeight": "429498545"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "1000000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/bundle",
    "tags": [
      "crypto",
      "credits",
      "bundle",
      "bulk"
    ],
    "mimeType": "application/json",
    "description": "Prepaid bundle: $1.00 -> 10 credits (10 standard calls or 5 premium reports)",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "token": "bnd_1a2b3c4d",
            "usage": {
              "/v1/sentiment": 1,
              "/v1/sentiment-report": 10
            },
            "credits": 10,
            "expires": 1788700000
          }
        }
      },
      "schema": {
        "type": "object",
        "$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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "token": {
                    "type": "string"
                  },
                  "usage": {
                    "type": "object"
                  },
                  "credits": {
                    "type": "integer"
                  },
                  "expires": {
                    "type": "number"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 6 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "250000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "9HYZc6qcSyN3qtHXYhuV112aUfe6d8pPSGszkKP3zGLb",
        "lastValidBlockHeight": "429498555"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "250000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/sentiment-history",
    "tags": [
      "crypto",
      "sentiment",
      "stellar",
      "history",
      "trend"
    ],
    "mimeType": "application/json",
    "description": "24h hourly sentiment series (FNG + momentum reconstructed, live order-flow)",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "series": [
              {
                "ts": 1786096800,
                "fng": -0.4,
                "momentum": 0.1,
                "price_usd": 0.1617,
                "sentiment": -0.15
              }
            ],
            "current": {
              "flow": -0.71,
              "sentiment": -0.35,
              "sentiment_source": "FNG+FLOW+MOMENTUM"
            },
            "methodology": "FNG + price momentum reconstructed hourly; order-flow is live-only"
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "series": {
                    "type": "array",
                    "items": {
                      "type": "object"
                    }
                  },
                  "current": {
                    "type": "object"
                  },
                  "methodology": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 7 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "4hi9xqkr4PSFrfVDeH1kPTj5xjiN5k4vH1zj2C9psvL2",
        "lastValidBlockHeight": "429498554"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "10000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/fng",
    "tags": [
      "crypto",
      "sentiment",
      "fng",
      "tick"
    ],
    "mimeType": "application/json",
    "description": "Cheap tick: Crypto Fear & Greed index (0-100) + label + mapped sentiment",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "ts": 1723000000,
            "index": 71,
            "label": "Greed",
            "mapped": 0.42
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "ts": {
                    "type": "number"
                  },
                  "index": {
                    "type": "number"
                  },
                  "label": {
                    "type": "string"
                  },
                  "mapped": {
                    "type": "number"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 8 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "UeQvsGjwWZMHWV6dgTgF1zP3n5JgSwxXrwbpZEk7Uye",
        "lastValidBlockHeight": "429498552"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "100000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/xlm-network",
    "tags": [
      "crypto",
      "stellar",
      "on-chain",
      "network",
      "pulse"
    ],
    "mimeType": "application/json",
    "description": "Stellar on-chain pulse: ledger health, supply, XLM/USDC SDEX trade stats (1h)",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "ledger": {
              "sequence": 61234567,
              "operations": 890,
              "successful_transactions": 312
            },
            "network": "stellar",
            "supply_xlm": 50123456789,
            "xlm_usdc_trades_1h": {
              "vwap_usd": 0.1638,
              "xlm_volume": 81234.5,
              "trade_count": 1502
            }
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "ledger": {
                    "type": "object"
                  },
                  "network": {
                    "type": "string"
                  },
                  "supply_xlm": {
                    "type": "number"
                  },
                  "xlm_usdc_trades_1h": {
                    "type": "object"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 9 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "9HYZc6qcSyN3qtHXYhuV112aUfe6d8pPSGszkKP3zGLb",
        "lastValidBlockHeight": "429498555"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "100000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/attested-quote",
    "tags": [
      "crypto",
      "oracle",
      "attestation",
      "verifiable",
      "market-data"
    ],
    "mimeType": "application/json",
    "description": "Oracle-grade quote: price + Ed25519 signature for verifiable agent data",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "ticker": "xlm",
            "price_usd": 0.16377,
            "attestation": {
              "scheme": "ed25519-solana",
              "signer": "G...",
              "message": "{...}",
              "signature_b58": "..."
            }
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "ticker": {
                    "type": "string"
                  },
                  "price_usd": {
                    "type": "number"
                  },
                  "attestation": {
                    "type": "object"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 10 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "Es5m3fSPaZ3zxDkoSoeuVJGCA7HjTc2YxmaP6DhC4BU",
        "lastValidBlockHeight": "429498553"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "100000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/breadth",
    "tags": [
      "crypto",
      "market-regime",
      "breadth",
      "macro",
      "verdict"
    ],
    "mimeType": "application/json",
    "description": "Market regime: top-50 breadth %, avg 24h change, BTC dominance, risk-on/off verdict, XLM relative strength vs BTC/ETH",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "xlm": {
              "rank_by_mcap": 18,
              "change_24h_pct": 2.4,
              "relative_strength": {
                "label": "outperforming",
                "xlm_vs_btc_pp": 1.1,
                "xlm_vs_eth_pp": 1.9
              }
            },
            "top50": {
              "count": 50,
              "breadth_pct": 64,
              "avg_change_24h_pct": 1.2
            },
            "verdict": {
              "tone": "Broad participation with positive average move.",
              "regime": "risk_on"
            },
            "dominance": {
              "btc_pct": 54.1,
              "eth_pct": 8.7
            }
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "xlm": {
                    "type": "object"
                  },
                  "top50": {
                    "type": "object"
                  },
                  "verdict": {
                    "type": "object"
                  },
                  "dominance": {
                    "type": "object"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 11 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "25000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "8FQR9LpH3ScZzMhzfMhAFMddcCkY8fGSChnrgyWSiFqK",
        "lastValidBlockHeight": "429498566"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "25000000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/bundle/enterprise",
    "tags": [
      "crypto",
      "enterprise",
      "volume"
    ],
    "mimeType": "application/json",
    "description": "Enterprise volume bundle: $25.00 -> 2,500 credits",
    "serviceName": "Echo Sentiment API"
  },
  "x402Version": 2
}

Captured payload 12 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "8FQR9LpH3ScZzMhzfMhAFMddcCkY8fGSChnrgyWSiFqK",
        "lastValidBlockHeight": "429498566"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/gas",
    "tags": [
      "crypto",
      "gas",
      "base",
      "infrastructure",
      "oracle"
    ],
    "mimeType": "application/json",
    "description": "Base gas oracle: price, base fee, priority fee, submit-now verdict",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "method": "GET"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "verdict": "cheap — submit now",
            "gas_price_gwei": 0.006
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "verdict": {
                    "type": "string"
                  },
                  "gas_price_gwei": {
                    "type": "number"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 13 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "4cRHCNG278w93LuuWsMmYhH9Atq7rGBTvptgMN5E4iGR",
        "lastValidBlockHeight": "429498568"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/prediction",
    "tags": [
      "crypto",
      "prediction-markets",
      "polymarket",
      "odds"
    ],
    "mimeType": "application/json",
    "description": "Prediction-market pulse: top Polymarket markets by 24h volume + yes-probability",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "method": "GET"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "top": [
              {
                "market": "Will BTC hit $150k by Dec?",
                "probability_yes": 0.62
              }
            ]
          }
        }
      },
      "schema": {
        "type": "object",
        "$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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "top": {
                    "type": "array",
                    "items": {
                      "type": "object"
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 14 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "8FQR9LpH3ScZzMhzfMhAFMddcCkY8fGSChnrgyWSiFqK",
        "lastValidBlockHeight": "429498566"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "20000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/wallet",
    "tags": [
      "crypto",
      "wallet",
      "ens",
      "intel",
      "identity"
    ],
    "mimeType": "application/json",
    "description": "Wallet intel: ENS reverse lookup + tx activity + USDC balance for a Base address",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "method": "GET"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "ens": "vitalik.eth",
            "tx_count": 2400,
            "usdc_balance": 5.2
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "ens": {
                    "type": "string"
                  },
                  "tx_count": {
                    "type": "integer"
                  },
                  "usdc_balance": {
                    "type": "number"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 15 of 15

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x583FfEE3f6E0E8cAB3531fBd5C4e291784D3b6cD",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BphPjLq9Z2p7fV3tQzpfhbghD1gCocmdC8V8WkGm7Lav",
        "recentBlockhash": "4cRHCNG278w93LuuWsMmYhH9Atq7rGBTvptgMN5E4iGR",
        "lastValidBlockHeight": "429498568"
      },
      "payTo": "7bu8aB2w94N8TRysqbBdKXNoPqSr9UopaZXJGVSRbLgk",
      "amount": "100000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.6766587364.lol/v1/sentiment",
    "tags": [
      "crypto",
      "sentiment",
      "stellar"
    ],
    "mimeType": "application/json",
    "description": "Composite XLM market sentiment (-1..1) + live price",
    "serviceName": "Echo Sentiment API"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "method": "GET"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "ts": 1723000000,
            "mid": 0.0931,
            "price_usd": 0.0932,
            "sentiment": 0.42,
            "components": {
              "fng": 0.3,
              "flow": 0.5,
              "momentum": 0.4
            },
            "spread_pct": 0.15,
            "sentiment_source": "FNG+FLOW+MOMENTUM"
          }
        }
      },
      "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",
                "required": [
                  "method"
                ],
                "properties": {
                  "method": {
                    "enum": [
                      "GET"
                    ],
                    "type": "string"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "ts": {
                    "type": "number"
                  },
                  "mid": {
                    "type": [
                      "number",
                      "null"
                    ]
                  },
                  "price_usd": {
                    "type": [
                      "number",
                      "null"
                    ]
                  },
                  "sentiment": {
                    "type": "number"
                  },
                  "components": {
                    "type": "object"
                  },
                  "spread_pct": {
                    "type": [
                      "number",
                      "null"
                    ]
                  },
                  "sentiment_source": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

79/100 Solid

                           │         │  ······│···
0                          55        75       93

                │     │ ···│··
0               55    75   93

#384 of 497 in Data. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability: 99.7% uptime 30d
Compliance: A 14/14 checks pass
Price: $0.01 to $25.00 p61 in Data
Risk: clean no risk flag
Traction: $0.00 30d 0 buyers

14/14 compliance checks

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

402 terms unchanged since 2026-09-28. Last up 2026-11-15.

── Site signals

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

How the score works

What the score read on this service: status online, 99.7% uptime 30d, 1595ms response p95, x402 compliance 14 of 14, $0.01 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside Data, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 497 listings, this one among them: the same 497 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Traction is a conservative undercount.

All measured facts

What it does

Echo Sentiment API is a listed x402 Data API. Captured payment terms name Base, Solana. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at 2026-11-15 22:03:29 UTC. Latest service check observed at 2026-11-15 23:04:24 UTC. Service data JSON · Measurement methodology.

Page rendered at 2026-11-15 23:17:42 UTC. This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: 2026-11-15 23:04:24 UTC. Latest price capture: 2026-09-28 22:37:25 UTC. Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at 2026-11-15 22:03:29 UTC. Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-10-17 to 2026-11-15 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · Data

uptime · latest daily rollup: 100%
uptime 7d: 99.5%
uptime 30d: 99.7%
uptime 90d: 95.6%
response p95: 1595ms
avg response: 542ms
total checks: 4,515

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

price (min): $0.01
price (max): $25.00
category percentile (min): p61 in Data
category percentile (max): p98 in Data
endpoints / prices: 15 / 6
model: tiered
stability: 13%

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: 93d
registrar: Dynadot Inc
hosting: custom
domain created: 2026-08-09

Identity facts, not a risk score.

assessment volume 30d: $0.00
exact assessment volume 30d (USD): 0
assessment recorded at (UTC): 2026-11-15T22:03:29.411Z
buyers 30d: 0
settlements 30d: 0
measured since: --- (start of our harvest window)
last settlement: ---
top buyer share: -
top 3 buyers share: -
concentrated volume: no
trend 7d vs 30d: -
networks: eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time: $0
settlements all-time: 0
median settlement 30d: -
max settlement 30d: -

Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.

member since: 2026-08-17

Recent checks

Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)	Status	HTTP	Response	Endpoints
2026-11-15 23:04:24 UTC	Online	402	576ms	15
2026-11-15 22:48:22 UTC	Online	402	446ms	15
2026-11-15 22:32:22 UTC	Online	402	427ms	15
2026-11-15 22:16:23 UTC	Online	402	465ms	15
2026-11-15 22:00:28 UTC	Online	402	664ms	15
2026-11-15 21:44:36 UTC	Online	402	345ms	15
2026-11-15 21:28:24 UTC	Online	402	298ms	15
2026-11-15 21:11:25 UTC	Online	402	497ms	15
2026-11-15 20:55:55 UTC	Online	402	2344ms	7
2026-11-15 20:38:26 UTC	Online	402	379ms	15
2026-11-15 20:22:25 UTC	Online	402	723ms	15
2026-11-15 20:06:29 UTC	Online	402	543ms	15
2026-11-15 19:50:30 UTC	Online	402	604ms	15
2026-11-15 19:34:30 UTC	Online	402	792ms	15
2026-11-15 19:18:28 UTC	Online	402	447ms	15
2026-11-15 19:02:22 UTC	Online	402	319ms	15
2026-11-15 18:46:17 UTC	Online	402	389ms	15
2026-11-15 18:30:21 UTC	Online	402	668ms	15

Changes0 in 30d

No changes recorded in the last 30 days.

all changes

Over time

On-chain volume daily snapshots, USD 30d: $0.00

                                                                                                 
                                                                                                 
                                                                                                 
                                                                                                 
                                                                                                 
       ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  
    $0

volume no data in the payload

Distinct buyers per dayDistinct buyers per day

        ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·  ·

Uptime 9 of 29 completed days below 100%

       ██ ██ ▇▇ ██ ▇▇ ██ ██ ██ ██ ██ ▇▇ ██ ██ ▇▇ ██ ██ ██ ▇▇ ▇▇ ██ ██ ██ ██ ██ ██ ▇▇ ▇▇ ▇▇ ██ ██

uptime below 100%, to scale

       10-17                                     10-31                                   11-15*

Volume 30d: $0.00
Uptime: 9 of 29 completed days below 100%

Daily on-chain settlement volume in US dollars, 2026-10-17 to 2026-11-15; 30 days have no data in the payload; distinct buyers per day

Day    Volume             USD  Buyers
10-17  · no data, 30 days to 11-15*

More charts

Response time daily average, ms min 248ms, avg 537ms, max 906ms

       ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▂▂ ▂▂ ▂▂ ▂▂ ▂▂ ▃▃ ▃▃ ▅▅ ▅▅ ▄▄ ▃▃ ▆▆ ██ ▆▆ ▆▆ ▆▆ ▇▇ ▅▅ ▇▇ ▆▆ ▆▆ ▇▇ ▆▆ ▆▆

10-17 to 11-15* UTC

      ▄▄▄▄▄▄▂▂▂▂▂▃▃▅▅▄▃▆█▆▆▆▇▅▇▆▆▇▆▆

      10-17         10-31     11-15*

Scores over time

x402 compliance low 14/14, high 14/14

       ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄

10-17 to 11-15* UTC

      ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

      10-17         10-31     11-15*

Price percentile in Data own low to high; exact values below

       ▁▁ ▇▇ ▇▇ ▁▁ ▁▁ ▇▇ ▇▇ ▇▇ ▇▇ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁

10-17 to 11-15* UTC

      ▁▇▇▁▁▇▇▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

      10-17         10-31     11-15*

Site signals present (of 6) own low to high; exact values below

       ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄

10-17 to 11-15* UTC

      ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

      10-17         10-31     11-15*

       10-17                                     10-31                                   11-15*

      10-17         10-31     11-15*

Scores: one day per column, 10-17 to 11-15*, on the columns of Response time. Uptime held below 100% on some days in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/echo-sentiment-api/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Daily snapshot total, no volume data in the last 30d. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.

Daily address snapshots: 2026-10-17 to 2026-11-15 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here.

Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.

Assessment history last recorded at 2026-11-15 22:03:29 UTC. Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-10-17 to 2026-11-15: address settlement volume in USD, distinct buyer and settlement counts, uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
Day	Volume	Buyers	Settlements	Uptime	Response	Compliance	Price percentile	Site signals
2026-10-17	no data	no data	no data	100%	492.36ms	14/14	p61	6/6
2026-10-18	no data	no data	no data	100%	441.43ms	14/14	p62	6/6
2026-10-19	no data	no data	no data	98.88%	477.63ms	14/14	p62	6/6
2026-10-20	no data	no data	no data	100%	464.55ms	14/14	p61	6/6
2026-10-21	no data	no data	no data	98.86%	470.64ms	14/14	p61	6/6
2026-10-22	no data	no data	no data	100%	486.05ms	14/14	p62	6/6
2026-10-23	no data	no data	no data	100%	248.00ms	14/14	p62	6/6
2026-10-24	no data	no data	no data	100%	251.45ms	14/14	p62	6/6
2026-10-25	no data	no data	no data	100%	251.24ms	14/14	p62	6/6
2026-10-26	no data	no data	no data	100%	268.49ms	14/14	p61	6/6
2026-10-27	no data	no data	no data	98.88%	275.06ms	14/14	p61	6/6
2026-10-28	no data	no data	no data	100%	335.52ms	14/14	p61	6/6
2026-10-29	no data	no data	no data	100%	347.98ms	14/14	p61	6/6
2026-10-30	no data	no data	no data	98.88%	600.35ms	14/14	p61	6/6
2026-10-31	no data	no data	no data	100%	585.22ms	14/14	p61	6/6
2026-11-01	no data	no data	no data	100%	476.57ms	14/14	p61	6/6
2026-11-02	no data	no data	no data	100%	392.60ms	14/14	p61	6/6
2026-11-03	no data	no data	no data	98.88%	666.39ms	14/14	p61	6/6
2026-11-04	no data	no data	no data	98.88%	906.31ms	14/14	p61	6/6
2026-11-05	no data	no data	no data	100%	629.83ms	14/14	p61	6/6
2026-11-06	no data	no data	no data	100%	626.92ms	14/14	p61	6/6
2026-11-07	no data	no data	no data	100%	698.85ms	14/14	p61	6/6
2026-11-08	no data	no data	no data	100%	793.24ms	14/14	p61	6/6
2026-11-09	no data	no data	no data	100%	614.65ms	14/14	p61	6/6
2026-11-10	no data	no data	no data	100%	765.01ms	14/14	p61	6/6
2026-11-11	no data	no data	no data	98.88%	701.56ms	14/14	p61	6/6
2026-11-12	no data	no data	no data	98.88%	729.20ms	14/14	p61	6/6
2026-11-13	no data	no data	no data	98.88%	778.17ms	14/14	p61	6/6
2026-11-14	no data	no data	no data	100%	664.99ms	14/14	p61	6/6
2026-11-15*	no data	no data	no data	100%	670.08ms	14/14	p61	6/6

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