# KMDE Data API — Base ERC-20 Token Info Lookup

> KMDE Data API — Base ERC-20 Token Info Lookup is a paid API for AI agents from kmde-snapshot-candidate.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-15).

Returns basic on-chain facts for a specific Base network ERC-20 token contract by its Ethereum address

## Facts

- Endpoint: GET https://kmde-snapshot-candidate.onrender.com/v1/base/token/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.json?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kmde-data-api-base-erc-20-token-info-lookup-a43346f7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A8rotQZOMN9bRO0iAmX1o

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 kmde-data-api-base-erc-20-token-info-lookup-a43346f7
```

Example prompt: Can you pull the on-chain basics for the ERC-20 token at Base contract address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913?

## When to prefer this

Use this endpoint when you need quick, inexpensive ($0.005 USDC) on-chain facts for a specific ERC-20 contract on the Base network and already know the contract address. It is suitable for single-address lookups rather than bulk queries. Prefer this over general blockchain explorers when you need a simple, programmatic JSON API response for agent consumption without scraping.

## Known failure modes

- Invalid or malformed contract address (not matching ^0x[0-9a-fA-F]{40}$) returns an error
- Address is valid Ethereum format but not an ERC-20 contract on Base — may return empty or error response
- Payment of $0.005 USDC not completed via x402 protocol results in 402 Payment Required
- Network or hosting service unavailability on Render.com causes timeout or 503 error
- Contract address exists but has minimal on-chain data resulting in sparse response

## How this service works

한국 HS854232 무역 통계, 코스닥 OpenDART 7일 공시 목록과 Base ERC-20 계약 기초 사실의 무료 목록·샘플 및 x402 고정 버전 JSON API.

## Output

A JSON object containing basic on-chain facts about the specified ERC-20 token contract deployed on the Base network, likely including token name, symbol, decimals, total supply, and contract address details.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "pathParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "headers": {
     "type": "object",
     "properties": {
      "Idempotency-Key": {
       "type": "string",
       "pattern": "^[!-~]+$",
       "maxLength": 128,
       "minLength": 1
      }
     },
     "additionalProperties": false
    },
    "pathParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "format"
   ],
   "properties": {
    "type": {
     "const": "json"
    },
    "format": {
     "const": "application/json"
    }
   },
   "additionalProperties": false
  }
 },
 "additionalProperties": false
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "format": "application/json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kmde-data-api-base-erc-20-token-info-lookup-a43346f7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kmde-snapshot-candidate.onrender.com](https://www.zero.xyz/host/kmde-snapshot-candidate.onrender.com/llms.txt)