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Most APIs require an account, an API key, and a billing relationship before a single request can be made. Agentic Services removes that setup: each call is paid in USDC at the moment it’s made, with no registration and no subscription. The marketplace lists x402-enabled APIs across search, inference, scraping, automation, and communication categories. Buyers pay per request; sellers publish by wrapping an existing endpoint and setting a price.
Visit the marketplace: agentic-services.polygon.technology

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Overview

Agentic Services is built on the x402 payment protocol. Each listed API is wrapped in an x402 layer that issues a 402 challenge, collects a USDC payment signature, settles onchain through a Polygon facilitator, and forwards the request to the upstream API. The catalog is also available as a machine-readable Markdown file (/SKILL.md) and a JSON endpoint (/api/discover/routes), so AI agents can discover routes and pay autonomously without human configuration.

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Features

Service catalog

Browse APIs by category with pricing, network, and example requests on each listing.

Pay per request

Settle each call in USDC on Polygon. No subscriptions, no prepaid credits.

Embedded wallet

Sign in with email and pay from an embedded wallet. No extensions, no gas to manage.

Testing console

Send live requests from the browser, inspect responses, and view settlement details.

Agent discovery

Fetch the catalog as Markdown (/SKILL.md) or JSON (/api/discover/routes).

Publish an API

Wrap an existing REST endpoint, set a price, and list it as an x402 service.

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Payment flow

When a buyer calls a service in the catalog, the marketplace’s x402 wrapper challenges, verifies, and settles the payment before forwarding to the upstream API. The flow is the standard x402 v2 exchange; the marketplace just hosts the resource server and the catalog.
x402 payment flow
1Client→ServiceGET /endpoint
2Service→Client402 Payment Required with price and accepts block (USDC, eip155:137, payTo)
3Client→ServiceRetries with EIP-3009 PAYMENT-SIGNATURE header
4Service→FacilitatorPOST /verify (signature + requirements)
5Facilitator→PolygonSettles USDC onchain
6ServiceForwards verified request to the upstream API, returns response
7Service→Client200 OK with body and PAYMENT-RESPONSE receipt header
Using the @x402/fetch SDK, this entire round-trip is handled automatically: the SDK reads the 402, signs the EIP-3009 authorization with the client wallet, retries the request, and surfaces the response and receipt. For protocol details, see x402 How It Works.

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Available services

The marketplace includes services for:
  • Web search
  • News retrieval
  • Web scraping
  • Browser automation
  • LLM inference
  • AgentMail services
The live catalog is available at agentic-services.polygon.technology.

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Get started

Open the marketplace

Browse available services and test API calls directly from the browser.

Buyer quickstart

Learn how to integrate x402 payments into an agent or application.

Seller quickstart

Learn how to expose an API as an x402-enabled service.

How x402 works

Understand the payment challenge, authorization, and settlement process.