# joe-evm-token-viability

> joe-evm-token-viability is a paid API for AI agents from queue-worldcat-webmaster-define.trycloudflare.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns a GO/SOFT_NO/HARD_NO viability verdict for an EVM token based on heuristic analysis of multi-stage screening data.

## Facts

- Endpoint: GET https://queue-worldcat-webmaster-define.trycloudflare.com/v1/viability
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/joe-evm-token-viability-9f6782ab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Iilye4cUqK-50MEUQCT2M

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 joe-evm-token-viability-9f6782ab
```

Example prompt: Give me a quick GO/SOFT_NO/HARD_NO viability check on token contract 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum mainnet (chain ID 1).

## When to prefer this

Choose this endpoint when you need a cheap, fast, first-pass viability signal on an EVM token before committing to deeper diligence. It is ideal for automated pipelines that need to gate further processing (e.g. only proceed with GO tokens), or for quickly filtering large lists of token addresses. Use the sibling joe-evm-token-screener endpoint if you need a detailed multi-stage verdict with stage-by-stage breakdown rather than a single summary label.

## Known failure modes

- Missing required query parameters (chain_id or address) returns a validation error
- Invalid or non-checksummed contract address may return an error or unreliable result
- Unsupported chain_id returns an error or empty result
- Token not yet indexed or too new may yield incomplete heuristic data
- Payment failure (x402) blocks the request before analysis occurs

## How this service works

Cheap GO/SOFT_NO/HARD_NO viability heuristic derived from screen stages. Not financial advice.

## Output

A lightweight heuristic verdict of GO, SOFT_NO, or HARD_NO for the queried EVM token, derived from multi-stage screening signals. This is a fast, cheap risk signal — not a comprehensive audit or financial advice.

## 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": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "chain_id",
      "address"
     ],
     "properties": {
      "address": {
       "type": "string"
      },
      "chain_id": {
       "type": "integer"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/joe-evm-token-viability-9f6782ab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from queue-worldcat-webmaster-define.trycloudflare.com](https://www.zero.xyz/host/queue-worldcat-webmaster-define.trycloudflare.com/llms.txt)