x402
No liveness check has reached it yet; it is registered on GitHub and has been in the index since 14 Oct 2026. How this is checked
x402 is an open, neutral standard for internet-native payments between clients and servers. Developers can add payment requirements to HTTP endpoints with middleware, allowing clients and AI agents to pay and retry requests programmatically.
Inferred · not functionally tested
Overview
6 featuresPurpose: Enabling programmatic payments between internet clients and servers without human checkout forms.
Inferred · not functionally tested
Audience: developers building APIs, web services, and agentic applications
Inferred · not functionally tested
Functions: payments
Inferred · not functionally tested
Interfaces: API: indicated (inferred, not tested) · MCP: unknown · CLI: unknown · Self-hosting: indicated (inferred, not tested)
Recorded constraints: pricing: open_source · license: Apache-2.0 · platforms: WEB · deployment: browser, api_only, self_hosted
Constraint provenance is unknown; confirm requirements with the publisher.
Record sources: x402.org · github.com. These links do not verify the individual claims.
x402 is a Payments infrastructure project. Inferred · not functionally tested: It focuses on enabling programmatic payments between internet clients and servers without human checkout forms. Inferred · not functionally tested: x402 is an open-source project aimed at developers building APIs, web services, and agentic applications. Basis unknown · not verified: The project is open source (Apache-2.0). Basis unknown · not verified: It ships for the web and API, and it can be self-hosted.
It is developed by x402 Foundation, and it first shipped in 2025. The project is developed in the open on GitHub with 6.7k stars and 278 commits in the last 90 days. Inferred · not functionally tested: Key capabilities include HTTP-native payments, payment middleware, and API monetization. Inferred · not functionally tested: Catalogued interfaces include a public API.
Summary written by a language model from the project’s public pages.
Tasks: Inferred · not functionally tested
- HTTP-native payments
- Payment middleware
- API monetization
- Multi-network support
- Agentic payments
- Payment retry flow
Topics: Inferred · not functionally tested
Built with & integrations
- Claude Code
- commit 600131cc3f26 · since Sep 2026
- Cursor
- commit 749653343bfb · since Sep 2026
- WordPress
- /wp-content/ in the HTML · /wp-includes/ in the HTML
- Cloudflare
- cf-ray header · cf-cache-status header
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
Frequently asked questions about x402
- What does x402 do?
- Inferred · not functionally tested: X402 focuses on enabling programmatic payments between internet clients and servers without human checkout forms. It is catalogued under Payments infrastructure on PulseGate.
- Who should use x402?
- Inferred · not functionally tested: x402 is an open-source project built for developers building APIs, web services, and agentic applications.
- Is x402 free?
- Basis unknown · not verified: Yes — x402 is open source under the Apache-2.0 license and free to use.
- What platforms does x402 run on?
- Basis unknown · not verified: x402 runs on the web and API. It can also be self-hosted.
- Is x402 still maintained?
- The GitHub repository shows 278 commits in the last 90 days.
- Who makes x402?
- x402 is developed by x402 Foundation.
- When did x402 launch?
- x402 first shipped in 2025.
- Is x402 open source?
- Basis unknown · not verified: Yes — x402 is open source under the Apache-2.0 license, developed on GitHub.
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