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QuantaFlow x402 API Gateway — Alchemy Optimism Mainnet
x402
QuantaFlow x402 API Gateway — Alchemy Optimism Mainnet is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).
Proxies requests to Alchemy's Optimism Mainnet RPC/API through an x402 micropayment-gated gateway, charging $0.01 USDC per call.
Price / call$0.01
Success—
StatusUnknown
How this service works
Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.
Output
The raw upstream response from Alchemy's Optimism Mainnet API is passed through directly, including the JSON-RPC result body and content type. Typical responses include blockchain data such as block info, transaction receipts, token balances, contract states, or event logs.
Example use cases
Check token balance on Optimism
“Query the USDC token balance for wallet address 0xAbC...123 on Optimism Mainnet using the Alchemy gateway — call the alchemy_getTokenBalances method at the /v2 path.”
Fetch transaction receipt for DeFi audit
“Get the full transaction receipt for tx hash 0xDef...456 on Optimism Mainnet via the Alchemy gateway, using eth_getTransactionReceipt at the /v2 path.”
Monitor smart contract events
“Pull the latest logs for the Uniswap V3 pool contract 0x789...abc on Optimism Mainnet using eth_getLogs through the QuantaFlow Alchemy gateway at the /v2 path.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/alchemy-opt-mainnet?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-use access to Alchemy's Optimism Mainnet APIs without committing to a subscription or managing API keys. Ideal for low-frequency or agent-driven queries where per-call micropayment ($0.01 USDC via x402) is preferable to a monthly plan. Best suited for agents already operating in the x402 payment ecosystem querying Optimism L2 on-chain data.
Side effects
- Payment failure: insufficient USDC balance or x402 payment not included — gateway returns 402 Payment Required
- Invalid path: unrecognized or malformed Alchemy API path — upstream returns 404 or 400
- Invalid JSON-RPC method: Alchemy returns an error object with code and message
- Rate limiting: Alchemy upstream rate limit exceeded — returns 429
- Network error: Optimism Mainnet node unavailable — returns 503 or timeout
- Malformed request body: JSON parse error forwarded from upstream
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| body | string | Optional JSON body forwarded to POST requests. |
| path | string | Path below the selected upstream origin. |
| query | object | |
| method | string |
Output
Schema · Response
{
"description": "The upstream response body and content type are passed through after successful payment."
}Tags
x402
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Zero review prompt (fires after every successful call)
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