# Liquid Agent — Solana Gas Sponsor

> Liquid Agent — Solana Gas Sponsor is a paid API for AI agents from api.liquidagent.ai, paid per call via x402, $0.1998/call, status unknown (last checked 2026-10-11).

Sponsors Solana transaction fees by acting as the fee payer, optionally broadcasting the co-signed transaction to the network

## Facts

- Endpoint: POST https://api.liquidagent.ai/v1/gas/solana?utm_source=zero.xyz
- Price: $0.1998/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/liquid-agent-solana-gas-sponsor-72841086
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Dx5aQ2iL2styCBqQdKrOD

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 liquid-agent-solana-gas-sponsor-72841086 -d '<json body>'
```

Example prompt: Sponsor the gas fees for this Solana transaction and broadcast it to the network after co-signing — here's the base64-encoded transaction where the fee payer is set to the sponsor address.

## When to prefer this

Use this endpoint when you need to subsidize Solana transaction fees on behalf of users who do not hold SOL, enabling gasless UX for dapps, NFT mints, token swaps, or account creation. Prefer this over self-managed gas when you want a hosted, pay-per-call sponsorship model rather than maintaining your own fee-payer wallet infrastructure.

## Known failure modes

- Invalid or malformed base64 transaction payload
- Fee payer field in transaction does not match sponsor address
- Transaction already signed in a way that conflicts with co-signing
- Insufficient sponsor balance to cover lamport fees
- Network congestion causing broadcast failure
- Transaction expired (blockhash too old) before submission

## How this service works

Sponsor 2 instruction(s) as fee payer: 1518840 lamports (1 account creates)

## Output

Returns a co-signed Solana transaction with the sponsor as fee payer. If the 'send' flag is true, the transaction is also broadcast to the Solana network and a transaction signature is returned. If false, only the co-signed transaction bytes are returned for the caller to broadcast independently.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "send": {
   "type": "boolean",
   "description": "true: we broadcast after co-signing"
  },
  "transaction": {
   "type": "string",
   "description": "base64 Solana transaction whose fee payer is the sponsor"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/liquid-agent-solana-gas-sponsor-72841086/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.liquidagent.ai](https://www.zero.xyz/host/api.liquidagent.ai/llms.txt)