# VIBE EVM Swap Quote

> VIBE EVM Swap Quote is a paid API for AI agents from api.vibe.airforce, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Get a swap quote for exchanging one EVM token for another on Base or Ethereum, paid per-call via x402 USDC microtransaction.

## Facts

- Endpoint: POST https://api.vibe.airforce/api/x402/vibe-tools/evm/swap-quote
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vibe-evm-swap-quote-b6b87055
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vCGa6euu2vyUVBubXJhQE

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 vibe-evm-swap-quote-b6b87055 -d '<json body>'
```

Example prompt: I want to swap 0.5 ETH for USDC on Base — can you get me a quote showing how much USDC I'd receive, using a slippage tolerance of 50 basis points?

## When to prefer this

Use this endpoint when you need a lightweight, pay-per-call swap quote on Base or Ethereum without API keys or account setup, especially when building agents that need on-demand DeFi pricing via x402 USDC micropayments.

## Known failure modes

- Invalid token address returns error — ensure EVM-compatible address or use 'eth' for native
- Unsupported network returns error — only 'base' and 'ethereum' are supported
- Zero or negative amount causes validation failure
- Highly illiquid token pair may return no route found
- Missing required fields (amount, token_in, token_out) returns 400-level error
- Payment failure via x402 protocol blocks the request

## How this service works

Top Picks: AI-verified smart money tokens every 30 min. 6-dimension scores, one-sentence thesis, smart money flow data. Plus 50+ crypto-data endpoints via x402 USDC on Base. No API keys, no accounts.

## Output

Returns a swap quote including the expected output token amount, exchange rate, price impact, and routing details for swapping the specified input token to the output token on the given EVM network.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "amount",
  "token_in",
  "token_out"
 ],
 "properties": {
  "amount": {
   "type": "string",
   "description": "Amount in human-readable units (e.g. '0.1')"
  },
  "network": {
   "type": "string",
   "description": "EVM network (base, ethereum)"
  },
  "slippage": {
   "type": "string",
   "description": "Slippage tolerance in basis points"
  },
  "token_in": {
   "type": "string",
   "description": "Input token address (or 'eth' for native)"
  },
  "token_out": {
   "type": "string",
   "description": "Output token address (or 'eth' for native)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vibe-evm-swap-quote-b6b87055/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vibe.airforce](https://www.zero.xyz/host/api.vibe.airforce/llms.txt)