API · x402

PAID (from $0.03 USDC): GAS SPONSOR on SOLANA

by api.liquidagent.ai · verified provider · updated 2026-11-08

What it does

PAID (from $0.03 USDC): GAS SPONSOR on SOLANA. A wallet or agent holding only USDC on Solana builds its transaction with our sponsor as fee payer, POSTs it here, gets a 402 quoting the exact cost in Solana USDC, pays over x402 and receives the transaction back co-signed by the fee payer (add send:true and we broadcast). The sponsor appears only as fee payer and payer of up to 8 associated-token-account creates; anything else that references it, a compute limit over 1.4M units or a price over 50,000 micro-lamports/unit is refused before pricing. 500 sponsorships per payer per day; 503 and no charge if the sponsor is low on SOL. GET https://api.liquidagent.ai/v1/gas/solana for the sponsor address and rules.

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/76438.json for the price and payment options.
Pay. Call GET https://api.liquidagent.ai/v1/gas/solana. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: see accepts
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Solana

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	—	BBcAL97dyJPGmsjQ7pPxCdUsFk1wgZ6jqYQ4DFvCVHkn	60s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "BBcAL97dyJPGmsjQ7pPxCdUsFk1wgZ6jqYQ4DFvCVHkn",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "maxTimeoutSeconds": 60
  }
]

Schemas

Output schema (JSON Schema)

"{transaction:<base64, now carrying the sponsor's signature>, feePayer, priceUsd, lamports, feePaymentSig, settledBy, signature? (when send:true), next}"

Example shape — generated from the schema, not a captured live response

null

Examples

curl

curl "https://api.liquidagent.ai/v1/gas/solana"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.liquidagent.ai/v1/gas/solana");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.liquidagent.ai/v1/gas/solana")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: api.liquidagent.ai
Endpoint: https://api.liquidagent.ai/v1/gas/solana
Machine-readable: /resources/76438.json