# klymax402 Bridge Routes — Cross-Chain Bridge Route Lookup

> klymax402 Bridge Routes — Cross-Chain Bridge Route Lookup is a paid API for AI agents from klymax402.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).

Returns available cross-chain bridge routes for a given token, amount, source chain, and destination chain.

## Facts

- Endpoint: GET https://klymax402.com/api/bridge-routes/api/route
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/klymax402-bridge-routes-cross-chain-bridge-route-lookup-0ce74a59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_foPQPq3MwHQgQDqQWdPDw

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 klymax402-bridge-routes-cross-chain-bridge-route-lookup-0ce74a59
```

Example prompt: What bridge routes are available to move 1000 USDC (1000000 in smallest units) from Base (chain 8453) to Arbitrum (chain 42161)?

## When to prefer this

Use this endpoint when an AI agent needs to discover available cross-chain bridge routes before executing a token transfer, especially when working across Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, or Avalanche. It is ideal for comparing bridge providers and routes programmatically without requiring the agent to manage separate API keys for each bridge protocol.

## Known failure modes

- Unsupported chain ID returns empty routes array
- Invalid token symbol returns no routes or error
- Amount formatted incorrectly (not in smallest unit) may return incorrect routes
- Missing required query parameters (fromChain, toChain, token, amount) returns validation error
- No liquidity available for requested pair returns empty routes array
- Payment not included or insufficient USDC returns HTTP 402

## How this service works

One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.

## Output

A JSON object listing available bridge routes for the specified token and chain pair, including the token symbol, amount, source chain, destination chain, number of results, and an array of route options with provider and fee details.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "fromChain",
      "toChain",
      "token",
      "amount"
     ],
     "properties": {
      "token": {
       "type": "string",
       "description": "Token symbol to bridge (e.g. USDC, USDT, ETH, WETH)"
      },
      "amount": {
       "type": "string",
       "description": "Amount in smallest unit (e.g. 1000000 for 1 USDC with 6 decimals, 1000000000000000000 for 1 ETH)"
      },
      "toChain": {
       "type": "string",
       "description": "Destination chain ID (1=Ethereum, 8453=Base, 42161=Arbitrum, 10=Optimism, 137=Polygon, 56=BSC, 43114=Avalanche)"
      },
      "toToken": {
       "type": "string",
       "description": "Destination token symbol if different from source (optional, defaults to same as token)"
      },
      "fromChain": {
       "type": "string",
       "description": "Source chain ID (1=Ethereum, 8453=Base, 42161=Arbitrum, 10=Optimism, 137=Polygon, 56=BSC, 43114=Avalanche)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "token": "example",
  "amount": "example",
  "routes": [],
  "results": 1,
  "to_chain": "example",
  "from_chain": "example"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/klymax402-bridge-routes-cross-chain-bridge-route-lookup-0ce74a59/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from klymax402.com](https://www.zero.xyz/host/klymax402.com/llms.txt)