Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a

Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a readable receipt: x402 version, scheme, CAIP-2 network and chain name, resource URL, the copied payment requirements, payer, recipient, value in atomic units and USD, USDC contract, nonce, validity window in ISO-8601 with seconds to expiry, signature length and prefix, extension keys, and pass/fail diagnostics. Computed locally, no upstream source.

1 route settlement-verified · $0.001 USDC/request · 1 endpoint · Data · base network · x402 protocol

Verified routes

• GET /v1/x402/receipt · $0.001 · Verified with a $0.001 test payment on 14 Nov 2026 · receipt

Other routes are unverified.

Networks: Base (settlement-verified), Avalanche (accepted)

Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.

url https://payapi.market/mcp

Listing facts

Provider

Drug card for a generic or brand name: NLM RxNorm concept (RxCUI, ingredients,

Hosted at

api.kit-rx.com

Category

Data

Price

$0.001 USDC per request

Payment networks

Base, Avalanche

Settlement-verified

1 route, last checked 2026-11-14

Listed on PayAPI Market

2026-11-14

Try Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a

Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.

curl -i "https://api.kit-rx.com/v1/x402/receipt"

About this API

Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a is listed in the Data category with pricing at $0.001 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-11-14. View receipt on Basescan.

Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.

This API exposes 1 endpoint.

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Paste this on your site. The link points at this listing. Listing is free and PayAPI takes 0% of each job.

Markdown

[![Settlement-verified on PayAPI Market](https://payapi.market/badge/decodes-the-x402-v2-payment-signature-header-sent-with-the-request-into-a.svg)](https://payapi.market/api/decodes-the-x402-v2-payment-signature-header-sent-with-the-request-into-a)

HTML

<a href="https://payapi.market/api/decodes-the-x402-v2-payment-signature-header-sent-with-the-request-into-a"><img src="https://payapi.market/badge/decodes-the-x402-v2-payment-signature-header-sent-with-the-request-into-a.svg" alt="Settlement-verified on PayAPI Market" height="20"></a>

What this badge means

Questions about this API

What does Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a do?

Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a readable receipt: x402 version, scheme, CAIP-2 network and chain name, resource URL, the copied payment requirements, payer, recipient, value in atomic units and USD, USDC contract, nonce, validity window in ISO-8601 with seconds to expiry, signature length and prefix, extension keys, and pass/fail diagnostics. Computed locally, no upstream source. It is provided by Drug card for a generic or brand name: NLM RxNorm concept (RxCUI, ingredients,.

How much does Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a cost?

Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a is priced at $0.001 USDC per request, paid per call with no subscription. Verified with a $0.001 test payment on 14 Nov 2026. The exact amount for each call is in the HTTP 402 response before any money moves.

Do I need an API key or account to use Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a?

No. Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a uses the x402 protocol, so an agent pays per request in USDC on Base, Avalanche and gets the response, with no API key, account or signup.

Has Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a been verified?

Yes, 1 route. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-11-14.

How does an AI agent find Decodes the x402 v2 PAYMENT-SIGNATURE header sent with the request into a?

Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.

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