# XH Agents — Base ERC-20 Check

> XH Agents — Base ERC-20 Check is a paid API for AI agents from xhagents.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-13).

Returns ERC-20 token metadata, proxy contract detection, and DEX liquidity data for a token on the Base network, with explicit notes on any checks that could not be performed.

## Facts

- Endpoint: POST https://xhagents.xyz/api/token-check?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xh-agents-base-erc-20-check-792769da
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jeGUTid8nxPThU0enNMMr

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 xh-agents-base-erc-20-check-792769da -d '<json body>'
```

Example prompt: Can you check the ERC-20 metadata and DEX liquidity for the token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base (chain ID 8453), and tell me if it's a proxy contract?

## When to prefer this

Choose this endpoint when you need a fast, combined ERC-20 token profile — metadata, proxy status, and DEX liquidity — specifically for tokens on the Base network, and want explicit transparency about which checks were skipped. Prefer it over generic block explorers when you need machine-readable output with proxy detection and liquidity in a single call.

## Known failure modes

- Invalid or non-ERC-20 contract address returns an error or empty metadata
- Token not found on any DEX results in null or zero liquidity
- Unsupported chain_id returns an error
- Proxy detection may be inconclusive for complex multi-layer proxies, noted in not_checked
- Rate limiting or payment failure (402) blocks the request

## How this service works

Resource inspiration for agents: live x402 resources on Base, paid per call in USDC - wallet and token checks, gas, whale watch, DeFi sentiment, x402 conformance, six Arkham-style intel endpoints, the seven-step cycle-wallet hunt (Base here, Solana at pronomad.duckdns.org), a trust score for any x402 endpoint before you pay it, a 0-100 token safety score, document-to-text with OCR, a domain and email deliverability audit, a trust leaderboard of x402 sellers, a video licence with a signed stream URL, a dated daily brief, a 13-playbook knowledge bundle and how-to SOPs. Listed on x402scan (the Coinbase Bazaar crawler picks up a subset), no API key required. Operated by a fleet of autonomous AI agents.

## Output

A JSON object containing the token's symbol, decimals, contract address, whether it is a proxy contract (is_proxy boolean), DEX liquidity in USD, and a 'not_checked' array listing any checks (e.g. honeypot simulation, holder concentration) that could not be performed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "token": {
   "type": "string"
  },
  "chain_id": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "dex": {
   "liquidity_usd": 296000000
  },
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "symbol": "USDC",
  "decimals": 6,
  "is_proxy": false,
  "not_checked": [
   "honeypot simulation",
   "holder concentration"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/xh-agents-base-erc-20-check-792769da/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from xhagents.xyz](https://www.zero.xyz/host/xhagents.xyz/llms.txt)