Directory of developer services accepting autonomous AI agent payments via x402 and Stripe MPP. Per-call pricing, free tiers, and integration guides.

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Developer Services That Accept Agent Payments

Published 2026-04-09 · Not yet reviewed

AI agents can now pay for API calls autonomously. This directory tracks which developer services accept payments via x402 (HTTP 402 protocol) and Stripe MPP (Machine Payments Protocol) — the two leading standards for machine-to-machine payments.

7
Services indexed
7
x402 services
1
MPP services
4
Categories

Payment Protocols

402

x402 — HTTP Native Agent Payments

CoinbaseLaunched May 2025Linux Foundation since April 2026

x402 uses the HTTP 402 “Payment Required” status code to enable pay-per-call API access. When an agent hits a 402 response, it reads the payment requirements from the response headers, completes the payment (typically via stablecoin on Base), and retries the request with proof of payment. No accounts or API keys needed — just a wallet. Founded by Coinbase with backing from Stripe, Cloudflare, Shopify, Visa, and Mastercard.

MPP

MPP — Stripe Machine Payments Protocol

StripeLaunched March 2026

Stripe’s Machine Payments Protocol (MPP) extends Stripe’s payment infrastructure for agent-to-service transactions. MPP adds agent identity verification, configurable spending limits, budget controls, and full audit trails. Built on familiar Stripe APIs, making adoption straightforward for services already using Stripe for billing. Agents pay with a variety of payment methods, including cards through Shared Payment Tokens (SPTs) and stablecoins.

Protocol Comparison

Featurex402Stripe MPP
Backed byLinux Foundation (Coinbase)Stripe
LaunchedMay 2025March 2026
Payment methodUSDC stablecoin on BaseStablecoin + fiat (cards, BNPL)
Account requiredNo — wallet onlyStablecoins: no, a wallet only. Cards: a Shared Payment Token, issued from a Link account
Integration effortHTTP 402 handler + walletStripe SDK integration
Budget controlsWallet balance limitsConfigurable per-agent spending limits
Audit trailOn-chain (Base L2)Stripe dashboard + API
Best forInstant access, no accountsFiat support, Stripe ecosystem

All Payment-Enabled Services

7 developer services accepting autonomous agent payments. 7 via x402, 1 via Stripe MPP, 1 supporting both.

ServiceCategoryProtocol(s)Free TierDetails
Browserbase Browser Automation x402 Free Headless browser infrastructure — Free Plan $0/mo Get started with Browserbase
Brave Search API AI / ML x402 Free $5 in free credits every month, applied automatically
Tavily AI AI / ML x402 Free Real-time web search API for AI agents, with search, extract, crawl and research endpoints
Pinata IPFS Storage x402 Stripe MPP Free As of 2026-08-28, pinata.cloud reads: 500 Pinned Files Total 1GB Storage Total 1 Gateway Total 10G Bandwidth Per month 10k… Our stored Pinata IPFS terms are superseded and withheld.
Exa AI / ML x402 Free Web search API for AI agents with Search, Contents, Answer, Monitors and Agent endpoints
Hyperbrowser Browser Automation x402 Pay-per-use Pay-per-use cloud browser sessions for AI agents — x402 micropayments, no API key needed
Strale Dev Utilities x402 Pay-per-use Business data APIs for AI agents: 298+ capabilities across 25 countries by Strale's count (read 2026-10-07), including I

Services by Category

AI / ML 3 services

Brave Search API x402

Free

$5 in free credits every month, applied automatically

Tavily AI x402

Free

Real-time web search API for AI agents, with search, extract, crawl and research endpoints

Exa x402

Free

Web search API for AI agents with Search, Contents, Answer, Monitors and Agent endpoints

Browser Automation 2 services

Browserbase x402

Free

Headless browser infrastructure — Free Plan $0/mo Get started with Browserbase

Hyperbrowser x402

Pay-per-use

Pay-per-use cloud browser sessions for AI agents — x402 micropayments, no API key needed

Storage 1 service

Pinata IPFS x402 Stripe MPP

Free

As of 2026-08-28, pinata.cloud reads: 500 Pinned Files Total 1GB Storage Total 1 Gateway Total 10G Bandwidth Per month 10k… Our stored Pinata IPFS terms are superseded and withheld.

Dev Utilities 1 service

Strale x402

Pay-per-use

Business data APIs for AI agents: 298+ capabilities across 25 countries by Strale's count (read 2026

Why Agent Payments Matter

Frequently Asked Questions

What is the x402 payment protocol?

x402 is an open HTTP-native payment protocol that uses the HTTP 402 status code to enable machine-to-machine payments. Coinbase launched it in May 2025 and contributed it in April 2026 to the x402 Foundation, which the Linux Foundation launched with members including Stripe, Cloudflare, Shopify, Visa, and Mastercard. It allows AI agents to autonomously pay for API calls without pre-provisioned accounts or API keys.

Which developer services accept x402 payments?

Currently 7 developer services indexed on AgentDeals accept x402 payments: Brave Search API, Browserbase, Exa, Hyperbrowser, Pinata IPFS, Strale and Tavily AI.

What is Stripe MPP (Machine Payments Protocol)?

MPP (Machine Payments Protocol) is Stripe's framework for agent-to-service payments launched March 2026. Currently 1 service in our index supports MPP. It builds on Stripe's existing payment infrastructure to add agent identity, budget controls, and audit trails. MPP uses familiar Stripe APIs, making adoption simpler for services already using Stripe.

How do AI agents pay for services autonomously?

Agents use payment protocols like x402 or MPP to negotiate and complete payments in real-time. With x402, the agent receives a 402 response with payment requirements, completes the crypto payment, and retries with proof of payment. With MPP, agents pay with a variety of payment methods, including cards through Shared Payment Tokens (SPTs) and stablecoins.

Do x402 services still have free tiers?

Not all. 5 of the 7 x402-enabled services indexed here also offer a free tier: Brave Search API, Browserbase, Exa, Pinata IPFS and Tavily AI. x402 is an additional payment option — it doesn't replace free tier access. Agents can use free tiers first and fall back to x402 when limits are exceeded.

API: /api/agent-payments · Filter: ?protocol=x402 · ?protocol=stripe-mpp · MCP: search_deals({payment_protocol: "x402"})

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