🆕 The per-transaction B20 rail check
🆕 The per-transaction B20 rail check: pass token + from + to (+ optional executor) and get one GO/HOLD/STOP on whether this exact transfer clears NOW — sender policy resolved against the sender, receiver policy against the recipient, executor policy against the operator, plus live transfer-pause. Every other B20 tool is per-token due diligence bought once; this is the check an agent runs on every payment. No ERC-20 tool can see it.
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
GET https://402.com.tr/api/x402/b20-transfer-preflight
| Category | Market data |
|---|---|
| Provider host | 402.com.tr |
| Networks | eip155:137, 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)
{
"method": "GET",
"pathParams": {},
"queryParams": {
"address": "0xb20000000000000000000186a08e781c38059eec",
"from": "0x973a31858f4d2125f48c880542da11a2796f12d6",
"to": "0xFe21a68f21d556A3C4274a44c2Fb5410c50cDa1C"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object"
},
"queryParams": {
"properties": {
"address": {
"description": "B20 token address",
"type": "string"
},
"executor": {
"description": "Executor (optional \u2014 transferFrom operator)",
"type": "string"
},
"from": {
"description": "Sender address",
"type": "string"
},
"to": {
"description": "Recipient address",
"type": "string"
}
},
"required": [
"address",
"from",
"to"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}