x402 List

x402 Protocol Service Directory

Zerion

Data PAYMENT-READY

payment-ready until 2026-09-27

Wallet, DeFi portfolio, and on-chain data API. Pay-per-request x402 on Base and Solana with no API key.

Pay from $0.01 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

measured since 2026-04-20 (start of our harvest window) · $6.96 all-time · settled via coinbase

BASE URL https://api.zerion.io WEBSITE https://zerion.io ENDPOINTS 3 NETWORK Base / Solana ASSET USDC MEMBER SINCE 2026-02-07 MONITORED SINCE 2026-04-15

VERDICT

ranking generation 3

solid 83/100 #161 of 300 in Data by measured score

What the score read on this service: status online, 99.9% uptime 30d, 1129ms 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.

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 300 listings, this one among them. That set is wider than the 300 the position above is counted against, 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.

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.

ALTERNATIVES IN DATA

Other Data services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE BAND SCORE UPTIME 30D VOL 30D
StableEnrich strong 95 100% $1.9k
glim.sh strong 95 100% $49.26
SniperX•x402 strong 95 100% $380.21
cn402 strong 94 100% $37.29
API Acre solid 92 99.5% $31.95
5 of 299 other ranked services in Data · see the whole category

ASSESSMENT

updated 6h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 99.9%
uptime 24h
100%
uptime 7d
99.9%
uptime 30d
99.9%
uptime 90d
100%
response p95
1129ms
avg response
707ms
total checks
7,215

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

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.01 (p59 in Data)
price (min)
$0.01
category percentile (min)
p59 in Data
endpoints / prices
3 / 1
model
flat
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.

domain age
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

traction $5.05 30d · 12 buyers
volume 30d
$5.05
buyers 30d
12
settlements 30d
505
measured since
2026-04-20 (start of our harvest window)
last settlement
2026-09-14
top buyer share
90% of 30d volume
trend 7d vs 30d
0.01x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$6.96
settlements all-time
696
median settlement 30d
$0.01
max settlement 30d
$0.01
settled via
coinbase ($5.05, 505 tx)

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.

CHANGES

10 in 30d

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes schema changed 2m ago (10 in 30d)

schema changed · 2m ago

schema removed GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"}

schema added GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema changed · 56m ago

schema removed GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema added GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"}

schema changed · 1h ago

schema removed GET /v1/wallets/{address}/portfolio/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"}

schema removed GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"}

schema added GET /v1/wallets/{address}/portfolio/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema added GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema changed · 3h ago

schema removed GET /v1/wallets/{address}/portfolio/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema removed GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema added GET /v1/wallets/{address}/portfolio/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"}

schema added GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"}

schema changed · 8h ago

schema removed GET /v1/wallets/{address}/positions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"}

schema added GET /v1/wallets/{address}/positions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema changed · 8h ago

schema removed GET /v1/wallets/{address}/portfolio/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"}

schema removed GET /v1/wallets/{address}/positions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema added GET /v1/wallets/{address}/portfolio/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema added GET /v1/wallets/{address}/positions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"}

schema changed · 9h ago

schema removed GET /v1/wallets/{address}/portfolio/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema added GET /v1/wallets/{address}/portfolio/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"}

schema changed · 11h ago

schema removed GET /v1/wallets/{address}/positions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"}

schema added GET /v1/wallets/{address}/positions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema changed · 12h ago

schema removed GET /v1/wallets/{address}/positions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

schema added GET /v1/wallets/{address}/positions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"}

schema changed · 12h ago

schema removed GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"}

schema added GET /v1/wallets/{address}/transactions/ exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"}

see all changes for this service

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /v1/wallets/{address}/portfolio/ Portfolio summary $0.01 Base/Solana USDC header
GET /v1/wallets/{address}/positions/ DeFi and token positions $0.01 Base/Solana USDC header
GET /v1/wallets/{address}/transactions/ Wallet transaction history $0.01 Base/Solana USDC header
3 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /v1/wallets/{address}/portfolio/ returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://api.zerion.io/v1/wallets/{address}/portfolio/'
// 402 response (captured by monitor) · 3 payloads · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xD07C06a650a88bBCF4f0c4fbf2c6c08c9a60AcC6",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "payTo": "CDXr4aHpS9ZD4s6tKFpgaTu6nPkn43ni3JhkJHGnyfcQ",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.zerion.io/v1/wallets/%7Baddress%7D/portfolio"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "data": {
                "type": "wallet-portfolio",
                "attributes": {
                  "total": {
                    "value": 1234.56,
                    "currency": "usd"
                  }
                }
              }
            }
          }
        },
        "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": [
                    "address"
                  ],
                  "properties": {
                    "address": {
                      "type": "string",
                      "description": "Wallet address (EVM 0x or Solana base58)"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "data"
                  ],
                  "properties": {
                    "data": {
                      "type": "object",
                      "properties": {
                        "id": {
                          "type": "string",
                          "description": "Resource ID."
                        },
                        "type": {
                          "type": "string",
                          "description": "Resource type."
                        },
                        "attributes": {
                          "type": "object",
                          "description": "Resource attributes; see https://developers.zerion.io"
                        }
                      }
                    },
                    "links": {
                      "type": "object",
                      "description": "Self and pagination links."
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xD07C06a650a88bBCF4f0c4fbf2c6c08c9a60AcC6",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "payTo": "CDXr4aHpS9ZD4s6tKFpgaTu6nPkn43ni3JhkJHGnyfcQ",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.zerion.io/v1/wallets/%7Baddress%7D/transactions/"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "data": [
                {
                  "id": "<resource id>",
                  "type": "<resource type>",
                  "attributes": {}
                }
              ],
              "links": {
                "self": "https://api.zerion.io/v1/..."
              }
            }
          }
        },
        "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": [
                    "address"
                  ],
                  "properties": {
                    "address": {
                      "type": "string",
                      "description": "Wallet address (EVM 0x or Solana base58)"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "data"
                  ],
                  "properties": {
                    "data": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "id": {
                            "type": "string",
                            "description": "Resource ID."
                          },
                          "type": {
                            "type": "string",
                            "description": "Resource type."
                          },
                          "attributes": {
                            "type": "object",
                            "description": "Resource attributes; see https://developers.zerion.io"
                          }
                        }
                      },
                      "description": "Array of JSON:API resource objects."
                    },
                    "links": {
                      "type": "object",
                      "description": "Self and pagination links."
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xD07C06a650a88bBCF4f0c4fbf2c6c08c9a60AcC6",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "payTo": "CDXr4aHpS9ZD4s6tKFpgaTu6nPkn43ni3JhkJHGnyfcQ",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.zerion.io/v1/wallets/%7Baddress%7D/positions/"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "data": [
                {
                  "id": "<resource id>",
                  "type": "<resource type>",
                  "attributes": {}
                }
              ],
              "links": {
                "self": "https://api.zerion.io/v1/..."
              }
            }
          }
        },
        "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": [
                    "address"
                  ],
                  "properties": {
                    "address": {
                      "type": "string",
                      "description": "Wallet address (EVM 0x or Solana base58)"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "data"
                  ],
                  "properties": {
                    "data": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "id": {
                            "type": "string",
                            "description": "Resource ID."
                          },
                          "type": {
                            "type": "string",
                            "description": "Resource type."
                          },
                          "attributes": {
                            "type": "object",
                            "description": "Resource attributes; see https://developers.zerion.io"
                          }
                        }
                      },
                      "description": "Array of JSON:API resource objects."
                    },
                    "links": {
                      "type": "object",
                      "description": "Self and pagination links."
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/zerion/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). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
08-22 · uptime 100.0% · 471ms avg08-23 · uptime 100.0% · 533ms avg08-24 · uptime 100.0% · 585ms avg08-25 · uptime 100.0% · 745ms avg08-26 · uptime 100.0% · 711ms avg08-27 · uptime 100.0% · 890ms avg08-28 · uptime 100.0% · 892ms avg08-29 · uptime 100.0% · 775ms avg08-30 · uptime 100.0% · 778ms avg08-31 · uptime 100.0% · 622ms avg09-01 · uptime 100.0% · 827ms avg09-02 · uptime 99.6% · 881ms avg09-03 · uptime 100.0% · 873ms avg09-04 · uptime 100.0% · 762ms avg09-05 · uptime 100.0% · 813ms avg09-06 · uptime 100.0% · 779ms avg09-07 · uptime 100.0% · 663ms avg09-08 · uptime 100.0% · 669ms avg09-09 · uptime 100.0% · 549ms avg09-10 · uptime 100.0% · 766ms avg09-11 · uptime 100.0% · 769ms avg09-12 · uptime 100.0% · 740ms avg09-13 · uptime 99.2% · 673ms avg09-14 · uptime 99.2% · 560ms avg09-15 · uptime 100.0% · 719ms avg09-16 · uptime 100.0% · 607ms avg09-17 · uptime 100.0% · 672ms avg09-18 · uptime 100.0% · 685ms avg09-19 · uptime 100.0% · 684ms avg09-20 · uptime 100.0% · 663ms avg08-2209-20
30d UPTIME 99.9%
RESPONSE TIME
08-22 · 471ms avg08-22 · 471ms avg08-23 · 533ms avg08-23 · 533ms avg08-24 · 585ms avg08-24 · 585ms avg08-25 · 745ms avg08-25 · 745ms avg08-26 · 711ms avg08-26 · 711ms avg08-27 · 890ms avg08-27 · 890ms avg08-28 · 892ms avg08-28 · 892ms avg08-29 · 775ms avg08-29 · 775ms avg08-30 · 778ms avg08-30 · 778ms avg08-31 · 622ms avg08-31 · 622ms avg09-01 · 827ms avg09-01 · 827ms avg09-02 · 881ms avg09-02 · 881ms avg09-03 · 873ms avg09-03 · 873ms avg09-04 · 762ms avg09-04 · 762ms avg09-05 · 813ms avg09-05 · 813ms avg09-06 · 779ms avg09-06 · 779ms avg09-07 · 663ms avg09-07 · 663ms avg09-08 · 669ms avg09-08 · 669ms avg09-09 · 549ms avg09-09 · 549ms avg09-10 · 766ms avg09-10 · 766ms avg09-11 · 769ms avg09-11 · 769ms avg09-12 · 740ms avg09-12 · 740ms avg09-13 · 673ms avg09-13 · 673ms avg09-14 · 560ms avg09-14 · 560ms avg09-15 · 719ms avg09-15 · 719ms avg09-16 · 607ms avg09-16 · 607ms avg09-17 · 672ms avg09-17 · 672ms avg09-18 · 685ms avg09-18 · 685ms avg09-19 · 684ms avg09-19 · 684ms avg09-20 · 663ms avg09-20 · 663ms avg08-2209-20
AVG RESP 707ms
PRICE (captured 402, USD)
08-21 · $0.0109-20 · $0.01$0.0108-2109-20

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

SUB-SCORES (uptime + x402 compliance)
08-21 uptime: 100.0% compliance: 100% checks08-22 uptime: 100.0% compliance: 100% checks08-23 uptime: 100.0% compliance: 100% checks08-24 uptime: 100.0% compliance: 100% checks08-25 uptime: 100.0% compliance: 100% checks08-26 uptime: 100.0% compliance: 100% checks08-27 uptime: 100.0% compliance: 100% checks08-28 uptime: 100.0% compliance: 100% checks08-29 uptime: 100.0% compliance: 100% checks08-30 uptime: 100.0% compliance: 100% checks08-31 uptime: 100.0% compliance: 100% checks09-01 uptime: 100.0% compliance: 100% checks09-02 uptime: 100.0% compliance: 100% checks09-03 uptime: 100.0% compliance: 100% checks09-04 uptime: 100.0% compliance: 100% checks09-05 uptime: 100.0% compliance: 100% checks09-06 uptime: 100.0% compliance: 100% checks09-07 uptime: 100.0% compliance: 100% checks09-08 uptime: 100.0% compliance: 100% checks09-09 uptime: 100.0% compliance: 100% checks09-10 uptime: 100.0% compliance: 100% checks09-11 uptime: 100.0% compliance: 100% checks09-12 uptime: 100.0% compliance: 100% checks09-13 uptime: 100.0% compliance: 100% checks09-14 uptime: 99.9% compliance: 100% checks09-15 uptime: 99.9% compliance: 100% checks09-16 uptime: 99.9% compliance: 100% checks09-17 uptime: 99.9% compliance: 100% checks09-18 uptime: 99.9% compliance: 100% checks09-19 uptime: 99.9% compliance: 100% checks09-20 uptime: 99.9% compliance: 100% checksuptimecompliance08-2109-20

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
08-23 · $0.0108-24 · $0.0108-25 · $0.0108-30 · $308-31 · $209-01 · $0.0509-02 · $0.0409-03 · $0.0409-04 · $0.0309-11 · $0.2409-12 · $0.0509-14 · $0.01peak $308-2309-14
DISTINCT BUYERS
08-23 · 1 buyer08-24 · 1 buyer08-25 · 1 buyer08-30 · 2 buyers08-31 · 2 buyers09-01 · 2 buyers09-02 · 2 buyers09-03 · 1 buyer09-04 · 1 buyer09-11 · 1 buyer09-12 · 3 buyers09-14 · 1 buyerpeak 3 buyers08-2309-14

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-09-20 · last up 2026-09-20

  • 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

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 555ms
● OK 614ms
● OK 949ms
● OK 819ms
● OK 599ms
● OK 738ms
● OK 621ms
● OK 620ms
● OK 478ms
● OK 325ms
● OK 878ms
● OK 645ms
● OK 703ms
● OK 553ms
● OK 593ms
● OK 553ms
● OK 499ms
● OK 558ms

EMBED THIS BADGE

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// HTML · live uptime variant
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