# CortexCloud Cross-Chain Token Comparison

> CortexCloud Cross-Chain Token Comparison is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-30).

Compares a token contract's on-chain data (price, liquidity, activity) across multiple EVM chains simultaneously, returning evidence-backed JSON

## Facts

- Endpoint: GET https://api.cortexcloud.org/v1/data/cross-chain-compare?utm_source=zero.xyz
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cortexcloud-cross-chain-token-comparison-28c22662
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dF_rApPnBgghmNLbWh7ed

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 cortexcloud-cross-chain-token-comparison-28c22662
```

Example prompt: Compare the token at contract 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 across Ethereum, Base, Arbitrum, Polygon, and Optimism — I want to see price, liquidity, and activity differences across all five chains.

## When to prefer this

Choose this endpoint when you need to compare a single token contract's metrics simultaneously across multiple EVM chains in one call. It is preferable to making separate single-chain lookups when cross-chain comparison is the goal, and better than general block explorers when you need aggregated, evidence-backed JSON ready for agent consumption without managing API keys.

## Known failure modes

- Invalid contract address format (must be 0x-prefixed 40-char hex) returns validation error
- Unsupported or misspelled chain names return an error for that chain entry
- Contract not deployed on a requested chain may return null or empty data for that chain
- Rate limiting or upstream data provider outages may cause partial or failed responses
- Response schema is documented as empty example — actual field structure may vary or be undocumented

## How this service works

Compare one contract across chains (price, activity, deployment) in one call (Alchemy + CoinGecko). x402-paid.

## Output

A JSON object containing per-chain metrics for the given token contract — including price, liquidity, trading volume, and on-chain activity — enabling side-by-side comparison across up to five EVM chains. Payment is settled in USDC on Base via x402 at $0.04 per call.

## 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": {
     "type": "string",
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chains": [
   {
    "chain": "ethereum",
    "deployed": true,
    "evidence": {
     "code_check": "alchemy eth_getCode",
     "price_check": "coingecko /simple/token_price/ethereum",
     "activity_check": "alchemy alchemy_getAssetTransfers"
    },
    "latest_tx": "0x3e75b4433904de1db0dde28d3290c64a950c3b6de539cd517b7e201568306f66",
    "price_usd": 0.999505,
    "latest_block": "0x1909309",
    "change_24h_usd": -0.02566615158280387,
    "recent_transfers": 25
   },
   {
    "chain": "base",
    "deployed": false,
    "evidence": {
     "code_check": "alchemy eth_getCode",
     "price_check": "coingecko /simple/token_price/base",
     "activity_check": "alchemy alchemy_getAssetTransfers"
    },
    "latest_tx": null,
    "price_usd": null,
    "latest_block": null,
    "change_24h_usd": null,
    "recent_transfers": 0
   }
  ],
  "summary": {
   "chains_live": 1,
   "chains_checked": 3,
   "best_liquidity_chain": "ethereum"
  },
  "contract": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
  "currency": "USDC",
  "cache_hit": false,
  "price_usd": 0.04
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cortexcloud-cross-chain-token-comparison-28c22662/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.cortexcloud.org](https://www.zero.xyz/host/api.cortexcloud.org/llms.txt)