# BaseBuilder DeFi Token Pairs Lookup

> BaseBuilder DeFi Token Pairs Lookup is a paid API for AI agents from bbx-defi.vercel.app, paid per call via x402, $0.094862/call, status unknown (last checked 2026-10-12).

Retrieves trading pairs for tokens on decentralized exchanges (DEX) given input token identifiers

## Facts

- Endpoint: POST https://bbx-defi.vercel.app/api/dex/token-pairs?utm_source=zero.xyz
- Price: $0.094862/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder-defi-token-pairs-lookup-b69d8897
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8mpj6-j3SluE0pn9UxU9g

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 basebuilder-defi-token-pairs-lookup-b69d8897 -d '<json body>'
```

Example prompt: Can you look up all the DEX trading pairs available for the token at address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on the Base network?

## When to prefer this

Choose this endpoint when you need to discover which DEX liquidity pools or trading pairs contain a specific token on the Base network or supported EVM chains. Prefer this over general blockchain explorers when you specifically need structured pair/pool data ready for DeFi analysis, arbitrage research, or liquidity assessment.

## Known failure modes

- Token address not found on specified chain — returns empty list or 404-style error
- Invalid token address format — returns validation error
- Unsupported chain or DEX — returns error indicating unsupported network
- Rate limiting or payment failure — returns 402 or 429 status
- DEX data source temporarily unavailable — returns 503 or timeout

## How this service works

BaseBuilder Defi API hub - 22 paid endpoints

## Output

Returns a list of DEX trading pairs associated with the queried token, typically including pair contract addresses, token symbols, token addresses for both sides of the pair, and potentially reserve/liquidity data for each pool.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder-defi-token-pairs-lookup-b69d8897/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bbx-defi.vercel.app](https://www.zero.xyz/host/bbx-defi.vercel.app/llms.txt)