x402 List

x402 Protocol Service Directory

Otto AI

AI ✓ VERIFIED

verified until 2026-07-26

AI-powered DeFi assistant swarm — 37 services covering market intel, news, token analytics, trading execution. Multi-chain (Base, Polygon, Solana).

Pay from $0.001 to $0.05 per request in USDC on Base / Polygon / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

UPTIME 24H 100% 7D 100% 30D 100%
BASE URL https://x402.ottoai.services WEBSITE https://useotto.xyz ENDPOINTS 3 NETWORK Base / Polygon / Solana ASSET USDC MEMBER SINCE 2026-01-29 MONITORED SINCE 2026-04-15

ASSESSMENT

updated 2h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%
uptime 24h
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
99.8%
response p95
310ms
avg response
223ms
total checks
7,164
compliance A (11/11)

11 of 11 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.001 to $0.05 (p17 in AI)
price (min)
$0.001
price (max)
$0.05
category percentile (min)
p17 in AI
category percentile (max)
p38 in AI
endpoints / prices
3 / 2
model
tiered
stability
100%
risk clean

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.

traction $103.64 30d · 432 buyers
volume 30d
$103.64
buyers 30d
432
settlements 30d
61,798
last settlement
2026-07-19
top buyer share
52% of 30d volume
trend 7d vs 30d
1.99x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d

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

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

Provides crypto news, token analytics, and research reports through AI-powered services

category
crypto-analytics
in
query params
auth
api key
cryptotoken-analyticsaimarket-intelligencedefitradingnewsresearch

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET
GET /crypto-news Crypto news stream $0.001 Base/Polygon/Solana USDC
GET /mega-report Comprehensive research report $0.05 Base/Polygon/Solana USDC
GET /token-details Token analytics $0.001 Base/Polygon/Solana USDC
3 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /crypto-news returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://x402.ottoai.services/crypto-news'
// 402 response (captured by monitor) · 3 payloads · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "assetTransferMethod": "permit2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:137",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "assetTransferMethod": "permit2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:137",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
        },
        "payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
        "amount": "50000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://x402.ottoai.services/mega-report",
      "tags": [
        "market intelligence",
        "daily crypto report",
        "crypto briefing",
        "alpha report"
      ],
      "iconUrl": "https://x402.ottoai.services/assets/otto-icon.png",
      "mimeType": "application/json",
      "description": "Alpha & Intel Report — daily crypto market intelligence: headlines, Twitter sentiment, KOL alpha, trending altcoins, and yield opportunities in one report.",
      "serviceName": "Otto AI"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "data": {
                "summary": "OTTO ALPHA & INTEL REPORT — TL;DR\n• MARKET: BTC consolidates near $104K after the FOMC pop; majors risk-on, alt breadth mixed; CPI print Thursday is the week's main catalyst.\n• NEWS: spot-ETF inflows resume; Base DEX volume prints a new high; two L2 mainnet launches this week.\n• KOL SIGNAL: trusted-list sentiment bullish-leaning; ETH and SOL dominate mentions; VVV leads Base chatter with accumulation framing.\n• TRENDING: 3 ranked altcoin picks from news + Twitter momentum.\n• YIELD: best risk-rated stablecoin and ETH lanes with APY comparison.\nFull multi-section HTML report (headlines, Twitter sentiment, KOL alpha, trending altcoins, yield) at report_url — one-time link, expires in 24h.",
                "report_url": "https://reports.useotto.xyz/reports/<one-time-id>.html"
              },
              "status": "success"
            }
          }
        },
        "schema": {
          "type": "object",
          "$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"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "properties": {}
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "status",
                    "data"
                  ],
                  "properties": {
                    "data": {
                      "description": "Report summary + URL on success, error string on failure"
                    },
                    "status": {
                      "enum": [
                        "success",
                        "failed"
                      ],
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      },
      "offer-receipt": {
        "info": {
          "offers": [
            {
              "format": "eip712",
              "payload": {
                "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "50000",
                "scheme": "exact",
                "network": "eip155:8453",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/mega-report"
              },
              "signature": "0x99c680144b7a1659fb644cee12bd4411d8fdfe162a3424ed09fdae02796864fe202e43f5d44a460fe4dcb5e723f4d2f2029c9b7549da50bfaf9d0497b10edbd81b",
              "acceptIndex": 0
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "50000",
                "scheme": "exact",
                "network": "eip155:8453",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/mega-report"
              },
              "signature": "0x99c680144b7a1659fb644cee12bd4411d8fdfe162a3424ed09fdae02796864fe202e43f5d44a460fe4dcb5e723f4d2f2029c9b7549da50bfaf9d0497b10edbd81b",
              "acceptIndex": 1
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "50000",
                "scheme": "exact",
                "network": "eip155:137",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/mega-report"
              },
              "signature": "0x5092666fbc50d18a465054cf36bfe9140e3d2c06b81bc4a2f8a923c9678b0ee1240241b34e71a95ba4c719f065191268ffdbd643b15daf96ae01a2bb65324a601c",
              "acceptIndex": 2
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "50000",
                "scheme": "exact",
                "network": "eip155:137",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/mega-report"
              },
              "signature": "0x5092666fbc50d18a465054cf36bfe9140e3d2c06b81bc4a2f8a923c9678b0ee1240241b34e71a95ba4c719f065191268ffdbd643b15daf96ae01a2bb65324a601c",
              "acceptIndex": 3
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
                "payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
                "amount": "50000",
                "scheme": "exact",
                "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/mega-report"
              },
              "signature": "0x701994f452c906ae24cb76f40f2fc8d1c78c9fb0d8ab70817f1894194d2f07fc3fd4267c408817d78366716a8572aadde50e9cde8fca13f905098db3b63d01a01c",
              "acceptIndex": 4
            }
          ]
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "offers"
          ],
          "properties": {
            "offers": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "format",
                  "signature"
                ],
                "properties": {
                  "format": {
                    "type": "string"
                  },
                  "payload": {
                    "type": "object",
                    "required": [
                      "version",
                      "resourceUrl",
                      "scheme",
                      "network",
                      "asset",
                      "payTo",
                      "amount"
                    ],
                    "properties": {
                      "asset": {
                        "type": "string"
                      },
                      "payTo": {
                        "type": "string"
                      },
                      "amount": {
                        "type": "string"
                      },
                      "scheme": {
                        "type": "string"
                      },
                      "network": {
                        "type": "string"
                      },
                      "version": {
                        "type": "integer"
                      },
                      "validUntil": {
                        "type": "integer"
                      },
                      "resourceUrl": {
                        "type": "string"
                      }
                    }
                  },
                  "signature": {
                    "type": "string"
                  },
                  "acceptIndex": {
                    "type": "integer"
                  }
                }
              }
            }
          }
        }
      },
      "sign-in-with-x": {
        "info": {
          "uri": "https://x402.ottoai.services/mega-report",
          "nonce": "9591543b805c80f40b80dd26b788648a",
          "domain": "x402.ottoai.services",
          "version": "1",
          "issuedAt": "2026-06-16T10:41:00.283Z",
          "resources": [
            "https://x402.ottoai.services/mega-report"
          ],
          "statement": "Sign in to access Otto AI market intelligence"
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "domain",
            "address",
            "uri",
            "version",
            "chainId",
            "type",
            "nonce",
            "issuedAt",
            "signature"
          ],
          "properties": {
            "uri": {
              "type": "string",
              "format": "uri"
            },
            "type": {
              "type": "string"
            },
            "nonce": {
              "type": "string"
            },
            "domain": {
              "type": "string"
            },
            "address": {
              "type": "string"
            },
            "chainId": {
              "type": "string"
            },
            "version": {
              "type": "string"
            },
            "issuedAt": {
              "type": "string",
              "format": "date-time"
            },
            "notBefore": {
              "type": "string",
              "format": "date-time"
            },
            "requestId": {
              "type": "string"
            },
            "resources": {
              "type": "array",
              "items": {
                "type": "string",
                "format": "uri"
              }
            },
            "signature": {
              "type": "string"
            },
            "statement": {
              "type": "string"
            },
            "expirationTime": {
              "type": "string",
              "format": "date-time"
            }
          }
        },
        "supportedChains": [
          {
            "type": "eip191",
            "chainId": "eip155:8453"
          },
          {
            "type": "eip191",
            "chainId": "eip155:137"
          },
          {
            "type": "ed25519",
            "chainId": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
          }
        ]
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "assetTransferMethod": "permit2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:137",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "assetTransferMethod": "permit2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:137",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
        },
        "payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
        "amount": "1000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://x402.ottoai.services/token-details",
      "tags": [
        "token price",
        "market cap",
        "token metrics",
        "token info",
        "price data"
      ],
      "iconUrl": "https://x402.ottoai.services/assets/otto-icon.png",
      "mimeType": "application/json",
      "description": "Token price, market cap, volume, supply, and basic metrics. Works for any listed token.",
      "serviceName": "Otto AI"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "symbol": "BTC"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "data": {
                "details": "=== TOKEN DATA INTELLIGENCE: BTC ===\nGenerated: 2026-06-10T12:00:00Z\n\nToken Overview\n• Name: Bitcoin (BTC)\n• Rank: #1\n• Price: $104250.00\n• Market Cap: $2.05T\n• FDV: $2.19T\n\nToday's Price Action (UTC)\n• Open: $103800.00 | High: $105120.00 | Low: $102940.00 | Current: $104250.00\n• Today's Trend: Up (+0.43% from open)\n\nPrice Performance\n• 1h: +0.12% | 24h: +1.85% | 7d: -2.40% | 30d: +6.10%\n\n📊 Volume Review\n• Volume (24h): $38420.50M | Volume/MCap Ratio: 1.87% | Market Pairs: 11240\n• Liquidity Score: High\n\nToken Supply\n• Circulating: 19.92M | Max Supply: 21.00M | Supply Ratio: 94.9%\n\nMomentum Signal\n• Momentum: 📊 Cooling Off (DYOR)\n\n📝 PROJECT INFO\n• Website, X profile, explorer, token address, and listing date included in the full report"
              },
              "status": "success"
            }
          }
        },
        "schema": {
          "type": "object",
          "$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"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "symbol"
                  ],
                  "properties": {
                    "symbol": {
                      "type": "string",
                      "description": "Token symbol (e.g., BTC, ETH, SOL, PEPE)"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "status",
                    "data"
                  ],
                  "properties": {
                    "data": {
                      "description": "Token details object on success, error string on failure"
                    },
                    "status": {
                      "enum": [
                        "success",
                        "failed"
                      ],
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      },
      "offer-receipt": {
        "info": {
          "offers": [
            {
              "format": "eip712",
              "payload": {
                "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "1000",
                "scheme": "exact",
                "network": "eip155:8453",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/token-details"
              },
              "signature": "0xc2afac07331d647c9bf2658bf26d1c42bc13a5a6a0623424f09253623b9d67c008bf2af545c0ece62e07943bb917835e1fa3a5622b7f5572d51f7a37612990cf1b",
              "acceptIndex": 0
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "1000",
                "scheme": "exact",
                "network": "eip155:8453",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/token-details"
              },
              "signature": "0xc2afac07331d647c9bf2658bf26d1c42bc13a5a6a0623424f09253623b9d67c008bf2af545c0ece62e07943bb917835e1fa3a5622b7f5572d51f7a37612990cf1b",
              "acceptIndex": 1
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "1000",
                "scheme": "exact",
                "network": "eip155:137",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/token-details"
              },
              "signature": "0x2100af44e93d77e3e74b6b3b550166ec1d662467e3d47bd1c1eb2eb9276878026b39a287971a74c7381cd5eb6bbb81919b076bc7858bcaf084975e4c2c7d14371c",
              "acceptIndex": 2
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "1000",
                "scheme": "exact",
                "network": "eip155:137",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/token-details"
              },
              "signature": "0x2100af44e93d77e3e74b6b3b550166ec1d662467e3d47bd1c1eb2eb9276878026b39a287971a74c7381cd5eb6bbb81919b076bc7858bcaf084975e4c2c7d14371c",
              "acceptIndex": 3
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
                "payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
                "amount": "1000",
                "scheme": "exact",
                "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/token-details"
              },
              "signature": "0x72718621a2cf051c16766f4c214cfeb916c8604c7218b17a2b32b7325f4fd26b4b5634ff1d4cfc449646e271a5e8532544d17212eaa368084f0717b0678516241c",
              "acceptIndex": 4
            }
          ]
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "offers"
          ],
          "properties": {
            "offers": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "format",
                  "signature"
                ],
                "properties": {
                  "format": {
                    "type": "string"
                  },
                  "payload": {
                    "type": "object",
                    "required": [
                      "version",
                      "resourceUrl",
                      "scheme",
                      "network",
                      "asset",
                      "payTo",
                      "amount"
                    ],
                    "properties": {
                      "asset": {
                        "type": "string"
                      },
                      "payTo": {
                        "type": "string"
                      },
                      "amount": {
                        "type": "string"
                      },
                      "scheme": {
                        "type": "string"
                      },
                      "network": {
                        "type": "string"
                      },
                      "version": {
                        "type": "integer"
                      },
                      "validUntil": {
                        "type": "integer"
                      },
                      "resourceUrl": {
                        "type": "string"
                      }
                    }
                  },
                  "signature": {
                    "type": "string"
                  },
                  "acceptIndex": {
                    "type": "integer"
                  }
                }
              }
            }
          }
        }
      },
      "sign-in-with-x": {
        "info": {
          "uri": "https://x402.ottoai.services/token-details",
          "nonce": "fd0ce435f0edad9a8460182d196b9d2d",
          "domain": "x402.ottoai.services",
          "version": "1",
          "issuedAt": "2026-06-16T10:41:00.323Z",
          "resources": [
            "https://x402.ottoai.services/token-details"
          ],
          "statement": "Sign in to access Otto AI market intelligence"
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "domain",
            "address",
            "uri",
            "version",
            "chainId",
            "type",
            "nonce",
            "issuedAt",
            "signature"
          ],
          "properties": {
            "uri": {
              "type": "string",
              "format": "uri"
            },
            "type": {
              "type": "string"
            },
            "nonce": {
              "type": "string"
            },
            "domain": {
              "type": "string"
            },
            "address": {
              "type": "string"
            },
            "chainId": {
              "type": "string"
            },
            "version": {
              "type": "string"
            },
            "issuedAt": {
              "type": "string",
              "format": "date-time"
            },
            "notBefore": {
              "type": "string",
              "format": "date-time"
            },
            "requestId": {
              "type": "string"
            },
            "resources": {
              "type": "array",
              "items": {
                "type": "string",
                "format": "uri"
              }
            },
            "signature": {
              "type": "string"
            },
            "statement": {
              "type": "string"
            },
            "expirationTime": {
              "type": "string",
              "format": "date-time"
            }
          }
        },
        "supportedChains": [
          {
            "type": "eip191",
            "chainId": "eip155:8453"
          },
          {
            "type": "eip191",
            "chainId": "eip155:137"
          },
          {
            "type": "ed25519",
            "chainId": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
          }
        ]
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "assetTransferMethod": "permit2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:137",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2",
          "assetTransferMethod": "permit2"
        },
        "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:137",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
        },
        "payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
        "amount": "1000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://x402.ottoai.services/crypto-news",
      "tags": [
        "crypto news",
        "market news",
        "sentiment analysis",
        "breaking headlines"
      ],
      "iconUrl": "https://x402.ottoai.services/assets/otto-icon.png",
      "mimeType": "application/json",
      "description": "Real-time crypto market news with sentiment analysis and top headlines ranked by importance.",
      "serviceName": "Otto AI"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "data": {
                "report": "Latest crypto news..."
              },
              "status": "success"
            }
          }
        },
        "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"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "properties": {}
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "status",
                    "data"
                  ],
                  "properties": {
                    "data": {
                      "description": "News report object on success, error string on failure"
                    },
                    "status": {
                      "enum": [
                        "success",
                        "failed"
                      ],
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      },
      "offer-receipt": {
        "info": {
          "offers": [
            {
              "format": "eip712",
              "payload": {
                "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "1000",
                "scheme": "exact",
                "network": "eip155:8453",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/crypto-news"
              },
              "signature": "0x2c5c3cce970066cd3dfba388c7691d6c2d276755a2a486256293a04942aed1da78b65a557ca52cf276e2593a6d32d20283449eb31ac8a7e87006cce3dbc36b531b",
              "acceptIndex": 0
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "1000",
                "scheme": "exact",
                "network": "eip155:8453",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/crypto-news"
              },
              "signature": "0x2c5c3cce970066cd3dfba388c7691d6c2d276755a2a486256293a04942aed1da78b65a557ca52cf276e2593a6d32d20283449eb31ac8a7e87006cce3dbc36b531b",
              "acceptIndex": 1
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "1000",
                "scheme": "exact",
                "network": "eip155:137",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/crypto-news"
              },
              "signature": "0x78a9eef3c9ec820c3932b55cdb472ba12008d884b6e34f242ba21a7b6b567d403e3302a40b31b8601aa6bbca31305709749d08a2da9f598a81a0d4a7e97c6f041c",
              "acceptIndex": 2
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
                "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
                "amount": "1000",
                "scheme": "exact",
                "network": "eip155:137",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/crypto-news"
              },
              "signature": "0x78a9eef3c9ec820c3932b55cdb472ba12008d884b6e34f242ba21a7b6b567d403e3302a40b31b8601aa6bbca31305709749d08a2da9f598a81a0d4a7e97c6f041c",
              "acceptIndex": 3
            },
            {
              "format": "eip712",
              "payload": {
                "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
                "payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
                "amount": "1000",
                "scheme": "exact",
                "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
                "version": 1,
                "validUntil": 1781606760,
                "resourceUrl": "https://x402.ottoai.services/crypto-news"
              },
              "signature": "0xcf833cc2f2f7c28ba68c38ef58b0da0c30693149d79c8bd07ad53c3e409477c832a8e3b566a162f7e14892c36c1d672f1e756916cec7efab9470042c241093821c",
              "acceptIndex": 4
            }
          ]
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "offers"
          ],
          "properties": {
            "offers": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "format",
                  "signature"
                ],
                "properties": {
                  "format": {
                    "type": "string"
                  },
                  "payload": {
                    "type": "object",
                    "required": [
                      "version",
                      "resourceUrl",
                      "scheme",
                      "network",
                      "asset",
                      "payTo",
                      "amount"
                    ],
                    "properties": {
                      "asset": {
                        "type": "string"
                      },
                      "payTo": {
                        "type": "string"
                      },
                      "amount": {
                        "type": "string"
                      },
                      "scheme": {
                        "type": "string"
                      },
                      "network": {
                        "type": "string"
                      },
                      "version": {
                        "type": "integer"
                      },
                      "validUntil": {
                        "type": "integer"
                      },
                      "resourceUrl": {
                        "type": "string"
                      }
                    }
                  },
                  "signature": {
                    "type": "string"
                  },
                  "acceptIndex": {
                    "type": "integer"
                  }
                }
              }
            }
          }
        }
      },
      "sign-in-with-x": {
        "info": {
          "uri": "https://x402.ottoai.services/crypto-news",
          "nonce": "962574673d9d1889509ece96f0358a0b",
          "domain": "x402.ottoai.services",
          "version": "1",
          "issuedAt": "2026-06-16T10:41:00.337Z",
          "resources": [
            "https://x402.ottoai.services/crypto-news"
          ],
          "statement": "Sign in to access Otto AI market intelligence"
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "domain",
            "address",
            "uri",
            "version",
            "chainId",
            "type",
            "nonce",
            "issuedAt",
            "signature"
          ],
          "properties": {
            "uri": {
              "type": "string",
              "format": "uri"
            },
            "type": {
              "type": "string"
            },
            "nonce": {
              "type": "string"
            },
            "domain": {
              "type": "string"
            },
            "address": {
              "type": "string"
            },
            "chainId": {
              "type": "string"
            },
            "version": {
              "type": "string"
            },
            "issuedAt": {
              "type": "string",
              "format": "date-time"
            },
            "notBefore": {
              "type": "string",
              "format": "date-time"
            },
            "requestId": {
              "type": "string"
            },
            "resources": {
              "type": "array",
              "items": {
                "type": "string",
                "format": "uri"
              }
            },
            "signature": {
              "type": "string"
            },
            "statement": {
              "type": "string"
            },
            "expirationTime": {
              "type": "string",
              "format": "date-time"
            }
          }
        },
        "supportedChains": [
          {
            "type": "eip191",
            "chainId": "eip155:8453"
          },
          {
            "type": "eip191",
            "chainId": "eip155:137"
          },
          {
            "type": "ed25519",
            "chainId": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
          }
        ]
      }
    },
    "x402Version": 2
  }
]

UPTIME

07-19 · uptime 100.0% · 165ms avg07-1907-19
RESPONSE TIME
07-19 · 165ms avg07-19 · 165ms avg07-1907-19
24h UPTIME 100%
UPTIME 24H 100%
AVG RESP 223ms
TOTAL CHECKS 7,180

RECENT CHECKS

TIME STATUS RESP
● OK 210ms
● OK 148ms
● OK 109ms
● OK 109ms
● OK 225ms
● OK 164ms
● OK 122ms
● OK 258ms
● OK 137ms
● OK 175ms
● OK 122ms
● OK 114ms
● OK 267ms
● OK 160ms
● OK 87ms
● OK 259ms
● OK 133ms
● OK 152ms

OVER TIME

All charts share the 24h window selected here. Every series is also served as JSON at /api/v1/services/otto-ai/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted).

PRICE (captured 402, USD)
07-18 · $0.00107-19 · $0.001$0.00107-1807-19

Median across 3 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
07-18 uptime: 100.0% compliance: 100% checks07-19 uptime: 100.0% compliance: 100% checksuptimecompliance07-1807-19
VOLUME (on-chain settlement, USD)
07-18 · $507-19 · $2peak $507-1807-19
DISTINCT BUYERS
07-18 · 28 buyers07-19 · 11 buyerspeak 28 buyers07-1807-19

COMPLIANCE

11/11 checks pass · grade A
  • 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

EMBED THIS BADGE

Show that Otto AI is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

Otto AI listed on x402-list
status
Otto AI uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/otto-ai?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/otto-ai.svg" alt="Otto AI listed on x402-list" height="28">
</a>
// Markdown
[![Otto AI on x402-list](https://x402-list.com/badge/otto-ai.svg)](https://x402-list.com/services/otto-ai?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/otto-ai?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/otto-ai.svg?data=uptime" alt="Otto AI uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]