x402 List

x402 Protocol Service Directory

Utilia Solana Preflight

Blockchain PAYMENT-READY

payment-ready until 2026-08-20

Machine-payable Solana transaction intelligence for autonomous agents: live priority-fee quantiles, transaction simulation, confirmed-transaction diagnostics, and token mint risk analysis. Every response is deterministic structured JSON, paid per call in mainnet USDC over x402 v2, with no account or API key.

Pay from $0.002 to $0.006 per request in USDC on Solana, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-07-26 · $0 all-time · settled via payAI

BASE URL https://api.utilia.ink WEBSITE https://utilia.ink ENDPOINTS 4 NETWORK Solana ASSET USDC MEMBER SINCE 2026-07-25 MONITORED SINCE 2026-07-25

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 99.9%
uptime 24h
100%
uptime 7d
99.8%
uptime 30d
99.9%
uptime 90d
99.9%
response p95
1087ms
avg response
207ms
total checks
1,712

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

compliance A (13/13)

13 of 13 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.002 to $0.006 (p28 in Blockchain)
price (min)
$0.002
price (max)
$0.006
category percentile (min)
p28 in Blockchain
category percentile (max)
p33 in Blockchain
endpoints / prices
4 / 3
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.

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

Identity facts, not a risk score.

traction $0.021 30d · 2 buyers · top buyer 95%
volume 30d
$0.021
buyers 30d
2
settlements 30d
21
first settlement
2026-07-26
last settlement
2026-08-13
top buyer share
95% of 30d volume
trend 7d vs 30d
2.86x the 30d daily rate
networks
solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$0
settlements all-time
21
median settlement 30d
$0.002
max settlement 30d
$0.002
settled via
payAI ($0.04, 21 tx)

Attributed pro-quota: this payout address is shared, so volume is the operator-level figure divided by the services sharing it, while buyer and transaction counts stay whole. A declared convention, not an individually observed measure, and still a conservative undercount.

Currently sharing this payout address with Utilia Agent Utilities.

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

WHAT IT DOES

ai-derived

Provides Solana blockchain transaction analysis, simulation, fee estimation, and token risk assessment services.

category
blockchain-analytics
in
path params and body
auth
none
blockchaintransaction-analysissimulationfee-estimationtoken-risk

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 402 CHANNEL
GET /v1/fees/priority $0.002 Solana USDC header
GET /v1/token/So11111111111111111111111111111111111111112 $0.006 Solana USDC header
GET /v1/transaction/11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 $0.004 Solana USDC header
GET /v1/transaction/simulate $0.004 Solana USDC -
4 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /v1/fees/priority returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://api.utilia.ink/v1/fees/priority'
// 402 response (captured by monitor) · 3 payloads · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"
        },
        "payTo": "AX1TzKChcrgjVW2JMtcYFLgxerfH1XfW7etuSdMSUKh5",
        "amount": "2000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.utilia.ink/v1/fees/priority",
      "tags": [
        "solana",
        "priority-fees",
        "compute-unit-price",
        "transactions",
        "agents"
      ],
      "iconUrl": "https://api.utilia.ink/favicon.ico",
      "mimeType": "application/json",
      "description": "Return timestamped Solana priority-fee quantiles for compute-unit bidding, optionally localized to up to 20 writable accounts. Designed for recurring transaction-bot polling at $0.002 per call.",
      "serviceName": "Utilia Solana Priority Fee Feed"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "observedAt": "2026-07-24T08:00:00.000Z",
              "sampleCount": 150,
              "lowMicroLamports": 1000,
              "highMicroLamports": 15000,
              "mediumMicroLamports": 5000
            }
          }
        },
        "schema": {
          "type": "object",
          "$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": {
                    "account": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      },
                      "maxItems": 20,
                      "description": "Repeatable Solana account query parameter"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"
        },
        "payTo": "AX1TzKChcrgjVW2JMtcYFLgxerfH1XfW7etuSdMSUKh5",
        "amount": "4000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.utilia.ink/v1/transaction/11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111",
      "tags": [
        "solana",
        "transaction",
        "diagnosis",
        "support",
        "agents"
      ],
      "iconUrl": "https://api.utilia.ink/favicon.ico",
      "mimeType": "application/json",
      "description": "Explain a confirmed Solana transaction, including balance deltas, logs, compute usage, and a retry-safe error classification.",
      "serviceName": "Utilia Solana Transaction Diagnosis"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "pathParams": {
              "signature": "11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
            },
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "signature": "5VERv8NM...",
              "succeeded": false,
              "classification": {
                "category": "slippage",
                "suggestedAction": "Request a fresh quote."
              }
            }
          }
        },
        "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"
                },
                "pathParams": {
                  "type": "object",
                  "required": [
                    "signature"
                  ],
                  "properties": {
                    "signature": {
                      "type": "string",
                      "description": "Base58 Solana transaction signature"
                    }
                  }
                },
                "queryParams": {
                  "type": "object",
                  "properties": {}
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        },
        "routeTemplate": "/v1/transaction/:signature"
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"
        },
        "payTo": "AX1TzKChcrgjVW2JMtcYFLgxerfH1XfW7etuSdMSUKh5",
        "amount": "6000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.utilia.ink/v1/token/So11111111111111111111111111111111111111112",
      "tags": [
        "solana",
        "token",
        "risk",
        "mint",
        "agents"
      ],
      "iconUrl": "https://api.utilia.ink/favicon.ico",
      "mimeType": "application/json",
      "description": "Inspect a Solana mint for live authorities, Token-2022 controls, supply, and holder concentration signals.",
      "serviceName": "Utilia Solana Token Safety"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "pathParams": {
              "mint": "So11111111111111111111111111111111111111112"
            },
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "mint": "So11111111111111111111111111111111111111112",
              "riskFlags": [],
              "top10HolderPercent": 22.4,
              "holderDataAvailable": true
            }
          }
        },
        "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"
                },
                "pathParams": {
                  "type": "object",
                  "required": [
                    "mint"
                  ],
                  "properties": {
                    "mint": {
                      "type": "string",
                      "description": "Solana token mint address"
                    }
                  }
                },
                "queryParams": {
                  "type": "object",
                  "properties": {}
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        },
        "routeTemplate": "/v1/token/:mint"
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 90d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/utilia-solana-preflight/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
07-25 · uptime 100.0% · 149ms avg07-26 · uptime 100.0% · 166ms avg07-27 · uptime 100.0% · 154ms avg07-28 · uptime 100.0% · 141ms avg07-29 · uptime 100.0% · 166ms avg07-30 · uptime 100.0% · 178ms avg07-31 · uptime 98.9% · 103ms avg08-01 · uptime 100.0% · 139ms avg08-02 · uptime 100.0% · 183ms avg08-03 · uptime 100.0% · 131ms avg08-04 · uptime 100.0% · 183ms avg08-05 · uptime 100.0% · 266ms avg08-06 · uptime 100.0% · 218ms avg08-07 · uptime 98.9% · 293ms avg08-08 · uptime 100.0% · 186ms avg08-09 · uptime 100.0% · 195ms avg08-10 · uptime 100.0% · 175ms avg08-11 · uptime 100.0% · 443ms avg08-12 · uptime 100.0% · 431ms avg08-13 · uptime 100.0% · 192ms avg07-2508-13
90d UPTIME 99.9%
RESPONSE TIME
07-25 · 149ms avg07-25 · 149ms avg07-26 · 166ms avg07-26 · 166ms avg07-27 · 154ms avg07-27 · 154ms avg07-28 · 141ms avg07-28 · 141ms avg07-29 · 166ms avg07-29 · 166ms avg07-30 · 178ms avg07-30 · 178ms avg07-31 · 103ms avg07-31 · 103ms avg08-01 · 139ms avg08-01 · 139ms avg08-02 · 183ms avg08-02 · 183ms avg08-03 · 131ms avg08-03 · 131ms avg08-04 · 183ms avg08-04 · 183ms avg08-05 · 266ms avg08-05 · 266ms avg08-06 · 218ms avg08-06 · 218ms avg08-07 · 293ms avg08-07 · 293ms avg08-08 · 186ms avg08-08 · 186ms avg08-09 · 195ms avg08-09 · 195ms avg08-10 · 175ms avg08-10 · 175ms avg08-11 · 443ms avg08-11 · 443ms avg08-12 · 431ms avg08-12 · 431ms avg08-13 · 192ms avg08-13 · 192ms avg07-2508-13
AVG RESP 207ms
PRICE (captured 402, USD)
07-25 · $0.00408-13 · $0.004$0.00407-2508-13

Median across 4 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
07-25 uptime: 100.0% compliance: 100% checks07-26 uptime: 100.0% compliance: 100% checks07-27 uptime: 100.0% compliance: 100% checks07-28 uptime: 100.0% compliance: 100% checks07-29 uptime: 100.0% compliance: 100% checks07-30 uptime: 100.0% compliance: 100% checks07-31 uptime: 100.0% compliance: 100% checks08-01 uptime: 99.8% compliance: 100% checks08-02 uptime: 99.9% compliance: 100% checks08-03 uptime: 99.9% compliance: 100% checks08-04 uptime: 99.9% compliance: 100% checks08-05 uptime: 99.9% compliance: 100% checks08-06 uptime: 99.9% compliance: 100% checks08-07 uptime: 99.8% compliance: 100% checks08-08 uptime: 99.8% compliance: 100% checks08-09 uptime: 99.9% compliance: 100% checks08-10 uptime: 99.9% compliance: 100% checks08-11 uptime: 99.9% compliance: 100% checks08-12 uptime: 99.9% compliance: 100% checks08-13 uptime: 99.9% compliance: 100% checksuptimecompliance07-2508-13

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)
no on-chain volume in the last 90d

Shared payout address (1 other service). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service figure is attributed, the assessment block and the ranking, it is the address total divided pro-quota by the 2 services sharing it: a declared convention, not an individually observed measure.

DISTINCT BUYERS
07-26 · 1 buyer08-03 · 1 buyer08-04 · 1 buyer08-05 · 1 buyer08-06 · 1 buyer08-07 · 1 buyer08-08 · 1 buyer08-09 · 1 buyer08-10 · 1 buyer08-11 · 1 buyer08-12 · 1 buyer08-13 · 1 buyerpeak 1 buyer07-2608-13

Shared payout address (1 other service). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Per-service buyer and transaction counts are shown whole (integers), not divided; only volume is attributed pro-quota. A declared convention, not an individually observed measure.

COMPLIANCE

13/13 checks pass · grade A

last 402 captured 2026-07-25 · last up 2026-08-13

  • 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 169ms
● OK 189ms
● OK 102ms
● OK 164ms
● OK 267ms
● OK 144ms
● OK 128ms
● OK 202ms
● OK 150ms
● OK 96ms
● OK 155ms
● OK 141ms
● OK 147ms
● OK 236ms
● OK 189ms
● OK 152ms
● OK 146ms
● OK 106ms

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status
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