# Agent Tape – DEX Pair Lookup

> Agent Tape – DEX Pair Lookup is a paid API for AI agents from agent-tape.annushka1190.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Fetches live DEX pair data (price, liquidity, boosts, orders) for a given trading pair from DexScreener, accessible via pay-per-request USDC with no API keys

## Facts

- Endpoint: GET https://agent-tape.annushka1190.workers.dev/v1/pair
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-tape-dex-pair-lookup-f34e5487
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iKTUtmYeq03cvs2nii1qb

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 agent-tape-dex-pair-lookup-f34e5487
```

Example prompt: Pull up the live DexScreener pair data for the WETH/USDC pair on Base — I want the current price, liquidity, and any active boosts.

## When to prefer this

Choose this endpoint when you need real-time DEX pair data (price, liquidity, boosts) without setting up API keys or accounts — ideal for AI trading agents that pay per request in USDC via x402 and need live DexScreener data on demand. Prefer this over direct DexScreener API integration when you want a keyless, pay-as-you-go model compatible with autonomous agent payment flows.

## Known failure modes

- Pair address not found or invalid — returns error or empty result
- Payment failure via x402 if insufficient USDC balance
- Rate limiting or worker downtime on the Cloudflare Workers host
- Unsupported chain or pair format in query parameters
- Stale or delayed data if DexScreener upstream is lagging

## How this service works

Live DEX tape for AI trading agents: search pairs, token price and liquidity, pair lookup, boosts, paid DexScreener orders, Base ETH/USDC balance, nonce, contract check, gas, and tx receipt. Pay-per-request USDC via x402. No API keys, no accounts.

## Output

A JSON object with ok:true and pair-level data from DexScreener including token price, liquidity figures, active boosts, paid promotional orders, and pair metadata for the queried trading pair.

## 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": {
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ]
    },
    "queryParams": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-tape-dex-pair-lookup-f34e5487/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-tape.annushka1190.workers.dev](https://www.zero.xyz/host/agent-tape.annushka1190.workers.dev/llms.txt)