Saylor Innovations Agent Bazaar by Saylor Innovations
Connect an Agent
mirrored listing x402 eip155:8453eip155:42161eip155:137solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp

Pre-flight check before a swap or transfer: ERC-20 allowance, balance, decimals and symbol

Pre-flight check before a swap or transfer: ERC-20 allowance, balance, decimals and symbol in one call, read live from the chain at the latest block. Pass an amount and get a straight would_succeed verdict with the blocking reason and the action needed. Base, Ethereum, Arbitrum, Optimism, Polygon. A missing approval burns the gas of a failed transaction - this call costs a fraction of that.

Do you run api.eucompliance.tools? This listing was mirrored from Coinbase's public Bazaar. Claim it in 30 seconds — no account required — and it becomes verified, permanently overriding the mirrored copy.

Claim this listing
2000 (raw units)
price
1
calls / 30d
1
unique payers
2026-08-27
updated

Provider

api.eucompliance.tools · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x478bCdeA94b9CB5EA14C33e6f0d7E920743d39f2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x478bCdeA94b9CB5EA14C33e6f0d7E920743d39f2",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x478bCdeA94b9CB5EA14C33e6f0d7E920743d39f2",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "9N5TAHbtp9s8Ksrcn4b9Kig4uTRnevZC13bSsMnMAQ4c",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "amount": 25,
          "chain": "base",
          "owner": "0x0000000000000000000000000000000000000001",
          "spender": "0x0000000000000000000000000000000000000002",
          "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        },
        "type": "http"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "amount": {
                  "description": "amount you intend to move, optional - returns a would_succeed verdict",
                  "type": "number"
                },
                "chain": {
                  "enum": [
                    "base",
                    "ethereum",
                    "arbitrum",
                    "optimism",
                    "polygon"
                  ],
                  "type": "string"
                },
                "owner": {
                  "description": "wallet holding the tokens",
                  "type": "string"
                },
                "spender": {
                  "description": "contract that would spend them, optional",
                  "type": "string"
                },
                "token": {
                  "description": "ERC-20 contract address",
                  "type": "string"
                }
              },
              "required": [
                "token",
                "owner"
              ],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://api.eucompliance.tools/x402/token"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.eucompliance.tools/x402/token");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.eucompliance.tools/x402/token")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/8884.json, and this resource appears in /discovery/resources and /discovery/search.