# Utilia Solana Priority Fee Quantiles

> Utilia Solana Priority Fee Quantiles is a paid API for AI agents from api.utilia.ink, paid per call via x402, $0.002/call, status down (last checked 2026-10-13).

Returns recent Solana priority-fee quantiles, optionally scoped to up to 20 specific writable accounts, to inform transaction fee-setting.

## Facts

- Endpoint: GET https://api.utilia.ink/v1/fees/priority?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: down
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/utilia-solana-priority-fee-quantiles-6509510c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tTFRIXfWwCaWRgN0-Fhnh

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability utilia-solana-priority-fee-quantiles-6509510c
```

Example prompt: What priority fees should I set for my next Solana transaction writing to accounts 9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM and 4Nd1mBQtrMJVYVfKf2PX98HDuNXZfpbuqaH4V1n5Y3J5 — can you get me the current fee quantiles from Utilia?

## When to prefer this

Use this endpoint when you need to dynamically set priority fees for Solana transactions, especially when submitting to congested programs or accounts. Prefer this over static fee estimates when you want account-localized fee data rather than global network averages, and when you need quantile-level granularity to balance cost vs. landing probability.

## Known failure modes

- Invalid Solana account address format returns an error
- More than 20 accounts provided exceeds the maxItems limit
- Network unavailability or Solana RPC issues may cause timeouts
- Missing or expired payment (x402) results in payment-required error
- Accounts with no recent fee history may return sparse or null quantile data

## How this service works

Give a Solana agent live compute-unit price bids for $0.002 per call via x402 USDC. One AgentCash command, no API key or subscription.

## Output

A structured response containing recent Solana priority fee quantiles (e.g. p25, p50, p75, p95) for the network overall, or scoped to the specified writable accounts, enabling the caller to choose an appropriate compute unit price for transaction submission.

## Request schema (JSON Schema)

```json
{
 "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"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "observedAt": "2026-07-24T08:00:00.000Z",
  "sampleCount": 150,
  "lowMicroLamports": 1000,
  "highMicroLamports": 15000,
  "mediumMicroLamports": 5000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/utilia-solana-priority-fee-quantiles-6509510c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.utilia.ink](https://www.zero.xyz/host/api.utilia.ink/llms.txt)