Utilia Solana Preflight
payment-ready 2026-09-05, probe currently failing
Machine-payable Solana transaction intelligence for autonomous agents: live priority-fee quantiles, transaction simulation, confirmed-transaction diagnostics, and token mint risk analysis.
Call it x402 v2
x402 v2
- Base URL
- https://api.utilia.ink
- Payment
- x402 v2, header channel
$ curl -i 'https://api.utilia.ink/v1/fees/priority' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 4 paid routes on api.utilia.ink
Prices as captured in the 402 response: median $0.005 across the 4 endpoints.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| GET | / | No description | $0.002 | Solana | USDC | header | since 07-25 |
| GET | / | No description | $0.006 | Solana | USDC | header | since 07-25 |
| GET | / | No description | $0.004 | Solana | USDC | header | since 07-25 |
| POST | / | No description | $0.008 | Solana | USDC | header | since 07-25 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 4 payloads captured by the monitor.
114 lines, scroll inside
{
"error": "Payment required",
"accepts": [
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"payTo": "AX1TzKChcrgjVW2JMtcYFLgxerfH1XfW7etuSdMSUKh5",
"amount": "6000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.utilia.ink/v1/token/So11111111111111111111111111111111111111112",
"tags": [
"solana",
"token",
"risk",
"mint",
"agents"
],
"iconUrl": "https://api.utilia.ink/favicon.ico",
"mimeType": "application/json",
"description": "Inspect a Solana mint for live authorities, Token-2022 controls, supply, and holder concentration signals.",
"serviceName": "Utilia Solana Token Safety"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"mint": "So11111111111111111111111111111111111111112"
},
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"mint": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"riskFlags": [],
"top10HolderPercent": 22.4,
"holderDataAvailable": true
}
}
},
"schema": {
"type": "object",
"$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
} Other captured 402 responses (3)
Captured payload 2 of 4
{
"error": "Payment required",
"accepts": [
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"payTo": "AX1TzKChcrgjVW2JMtcYFLgxerfH1XfW7etuSdMSUKh5",
"amount": "8000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.utilia.ink/v1/transaction/simulate",
"tags": [
"solana",
"transaction",
"simulation",
"preflight",
"agents"
],
"iconUrl": "https://api.utilia.ink/favicon.ico",
"mimeType": "application/json",
"description": "Simulate an unsigned or signed Solana transaction with a fresh blockhash and classify any failure before broadcast.",
"serviceName": "Utilia Solana Transaction Simulation"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"encoding": "base64",
"transaction": "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",
"accountAddresses": []
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"succeeded": false,
"unitsConsumed": 15096,
"classification": {
"category": "program_error",
"suggestedAction": "Inspect the program logs before rebuilding the transaction."
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"transaction"
],
"properties": {
"encoding": {
"enum": [
"base64",
"base58"
],
"type": "string"
},
"transaction": {
"type": "string",
"description": "Serialized transaction"
},
"accountAddresses": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 20
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 3 of 4
{
"error": "Payment required",
"accepts": [
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"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
}Captured payload 4 of 4
{
"error": "Payment required",
"accepts": [
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"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": "4hzZBr8uqd4ba4A28qDPJWPVGfQtrBfA63jHr7k18hEEfxN6JEsmbDkKQ8hsULMfy1CXBhJEkzUnympWvSU4DuEF",
"succeeded": true,
"classification": {
"category": "none",
"suggestedAction": null
}
}
}
},
"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
}Can I trust it score from our own monitoring
score from our own monitoring
Not ranked yet: this listing was not in the ranked pool for Blockchain the last time we built it, which happens at most once a minute. A service listed moments ago enters at the next rebuild.
- Reliability
- 0% uptime 30d
- Compliance
- A 13/13 checks pass, stale (probe failing)
- Price
- $0.002 to $0.008 p30 in Blockchain
- Risk
- clean no risk flag
- Traction
- ---
13/13 compliance checks
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
402 terms unchanged since 2026-08-24. Last up 2026-09-05.
── Site signals
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
How the score works
The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.
Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.
All measured facts
What it does
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.
Utilia Solana Preflight is a listed x402 Blockchain API. Captured payment terms name Solana. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.
Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.
Page rendered at . This response time is separate from the observation and computation times attached to each measurement.
Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.
Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.
Observed daily coverage: 2026-09-25 to 2026-10-24 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.
Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.
x402 List home · Services · Blockchain
- uptime · latest daily rollup
- 0%
- uptime 7d
- 0%
- uptime 30d
- 0%
- uptime 90d
- 94.6%
- response p95
- -
- avg response
- -
- total checks
- 123
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.002
- price (max)
- $0.008
- category percentile (min)
- p30 in Blockchain
- category percentile (max)
- p28 in Blockchain
- endpoints / prices
- 4 / 4
- model
- tiered
- stability
- 0%
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.
This service shares a payout address and its probe has been failing, so its on-chain volume is suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.
- member since
- 2026-07-25
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Offline | no response | 343ms | 0 | |
| Offline | no response | 295ms | 0 | |
| Offline | no response | 177ms | 0 | |
| Offline | no response | 215ms | 0 | |
| Offline | no response | 197ms | 0 | |
| Offline | no response | 427ms | 0 | |
| Offline | no response | 675ms | 0 | |
| Offline | no response | 596ms | 0 | |
| Offline | no response | 492ms | 0 | |
| Offline | no response | 583ms | 0 | |
| Offline | no response | 361ms | 0 | |
| Offline | no response | 300ms | 0 | |
| Offline | no response | 401ms | 0 | |
| Offline | no response | 482ms | 0 | |
| Offline | no response | 745ms | 0 | |
| Offline | no response | 384ms | 0 | |
| Offline | no response | 434ms | 0 | |
| Offline | no response | 561ms | 0 |
Changes0 in 30d
No changes recorded in the last 30 days.
Over time
This service shares a payout address and its probe has been failing, so its on-chain volume is suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.
- Uptime
- 29 of 29 completed days below 100%
This service shares a payout address and its probe has been failing, so its on-chain volume is suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.
More charts
Scores over time
09-25 to 10-24* UTC
09-25 to 10-24* UTC
09-25 to 10-24* UTC
Scores: one day per column, 09-25 to 10-24*, on the columns of Response time. Uptime held below 100% on some days in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.
Each series spans only the dates it has data for. Every series is also served as JSON at /api, /scores, /volume and /buyers.
Values
* today so far, partial (UTC).
The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|
| 2026-09-25 | 0% | no data | 13/13 | p32 | 0/6 |
| 2026-09-26 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-09-27 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-09-28 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-09-29 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-09-30 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-01 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-02 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-03 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-04 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-05 | 0% | no data | 13/13 | p27 | 0/6 |
| 2026-10-06 | 0% | no data | 13/13 | p27 | 0/6 |
| 2026-10-07 | 0% | no data | 13/13 | p27 | 0/6 |
| 2026-10-08 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-09 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-10 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-11 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-12 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-13 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-14 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-10-15 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-10-16 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-10-17 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-10-18 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-10-19 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-10-20 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-10-21 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-10-22 | 0% | no data | 13/13 | p31 | 0/6 |
| 2026-10-23 | 0% | no data | 13/13 | p30 | 0/6 |
| 2026-10-24* | 0% | no data | 13/13 | p30 | 0/6 |
Alternatives in Blockchain
5 of 75 other ranked services in Blockchain, ordered by the same measured score.
Own this service?
Keep this listing accurate. Ownership is proven with a domain check and every change is reviewed by hand.
Update this listingEarn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.
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