Pincer Protocol

The Intelligent Payment-Gated API Layer

Pincer represents a new paradigm in API monetization: Payment-Gated Intelligence. It seamlessly integrates high-performance AI agents with the x402 payment protocol, allowing developers to monetize their APIs with micro-transactions while offering automated rebates and sponsored access.

Product Demo Pitch Deck

Why Pincer?

🚀 Zero-Friction Monetization

Integrate payments into any API endpoint with just a few lines of code. No complex merchant accounts or subscription management required.

🤖 Agent-Native

Built for the autonomous economy. Pincer APIs are designed to be consumed by AI agents, with machine-readable payment requirements and automatic negotiation.

💸 Dynamic Rebates

Sponsors can subsidize user access. Pincer's "Post-Pay Rebate" system allows third parties to refund user fees instantly, driving traffic without lowering the paywall.

Examples

Check out the examples/ directory for standalone scripts demonstrating key integrations:

• Buyer Flow: Client-side payment handling.
• Resource Server: Protecting content with x402.
• Sponsor Integration: Reporting conversions.

Architecture

Understand how Pincer facilitates trustless payments and rebates between Agents and APIs.

Core Architecture

Get Started

- **x402 Sellers** Monetize your data/services and accept crypto micro-payments from Buyers. [:arrow_right: Seller Integration](guides/seller.md) [:arrow_right: Buyer Guide](guides/buyer.md) - **Sponsors** Offer rebates to users to drive traffic and brand awareness. [:arrow_right: Campaign Guide](guides/sponsor.md)

Security Audit

The Pincer protocol and reference implementation have been audited for security and functional correctness.

View Audit Reports

See it in Action

Want to see the entire flow? Run the end-to-end demo.

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