Pre-trade context bundle for autonomous crypto agents
Pre-trade context bundle for autonomous crypto agents: wallet balances, ERC-20 allowance to a spender, current gas/base fee, realtime price, 24h statistics and best bid/ask spread. Use immediately before swaps, recurring payments or automated execution. This endpoint provides data only and never submits a trade.
Not tested: has real-world effectsour last check, 2026-10-04
0 of 0checks answered this week
n/amedian answer time
$0.01listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://x402-gateway-production-1f21.up.railway.app/agent/pretrade
| Category | Code and developer |
|---|---|
| Provider host | x402-gateway-production-1f21.up.railway.app |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"body": {
"address": "0x0000000000000000000000000000000000000000",
"network": "base",
"product_id": "BTC-USD",
"spender": "0x0000000000000000000000000000000000000000",
"token_contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"address": {
"pattern": "^0x[a-fA-F0-9]{40}$",
"type": "string"
},
"balance_tokens": {
"items": {
"pattern": "^0x[a-fA-F0-9]{40}$",
"type": "string"
},
"maxItems": 20,
"type": "array"
},
"network": {
"default": "base",
"enum": [
"base",
"ethereum"
],
"type": "string"
},
"product_id": {
"pattern": "^[A-Za-z0-9]{2,15}-[A-Za-z0-9]{2,15}$",
"type": "string"
},
"spender": {
"pattern": "^0x[a-fA-F0-9]{40}$",
"type": "string"
},
"token_contract": {
"pattern": "^0x[a-fA-F0-9]{40}$",
"type": "string"
}
},
"required": [
"address",
"spender",
"token_contract",
"product_id"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}