This project is scheduled for launch
Launch date: Sunday, December 20, 2026 at 08:00 AM UTC

Lumière PayCheck is a robust platform designed to ensure the reliability and security of AI agent payments for x402 API endpoints. It actively monitors and validates API services, preventing AI agents from inadvertently paying for non-functional, overpriced, or compromised endpoints. This service is ideal for AI agent builders, facilitators, and teams running AI agents that interact with paid APIs on Base and Solana, as well as businesses seeking to automate critical follow-up tasks.
Key Features
Real-time x402 endpoint monitoring and validation across 64,075 endpoints.
Automated test payments to confirm API service delivery and accuracy.
Comprehensive grading (A, B, C, D, F) based on uptime, latency, stability, and delivery.
Spending limits, per-payment caps, and replayable audit trails for AI agent payments.
Integrated follow-up agents for business operations (Invoice Chaser, Quote Follow-up, Missed-Call Text-Back, Paperwork Chaser, Receipt Chaser).
Seamless integration with popular AI apps like Claude and Cursor, and the x402 fetch client.
Use Cases
For AI agents, Lumière PayCheck acts as a crucial safeguard, allowing them to check any x402 endpoint before making a payment. This ensures that agents only pay for services that deliver as advertised, effectively preventing financial loss due to faulty, underperforming, or malicious APIs. It provides a layer of trust and verification in the burgeoning AI economy, enabling agents to operate autonomously with confidence.
Beyond agent payments, Lumière offers a suite of "Lumière Agents" designed to automate critical business follow-up tasks. Businesses can leverage these agents to chase unpaid invoices, follow up on quotes to win more jobs, send automated text-backs for missed calls, collect and manage insurance certificates from subcontractors, and track down missing receipts from team members. These agents work with QuickBooks or any spreadsheet, streamlining operations and significantly improving efficiency by handling repetitive, yet vital, communication.
Developers and agent builders benefit from tools and APIs that allow direct integration of payment checks into their agent workflows. This provides transparency and granular control over agent spending, ensuring compliance and accountability. The platform's detailed analytics and leaderboard also help identify reliable and top-performing API sellers.
Pricing Information
Lumière PayCheck operates on a freemium model. A free tier offers scores, leaderboard access, spending-rule checks, and the MCP server with a rate limit of 60 requests per minute. Users can obtain a free API key to increase this limit to 300 requests per minute. Pay-per-use options are available for full reports, batch checks, and webhook alerts. For teams, subscription plans include Builder ($9/month) for solo builders and Business ($49/month) for larger teams, both offering a free 30-day trial. Enterprise plans are custom-quoted, providing advanced features and support.
User Experience and Support
The platform is designed for ease of use, offering straightforward integration with existing AI applications and development environments. Its clear grading system and detailed monitoring data provide immediate insights into endpoint reliability. Comprehensive documentation is available on GitHub, guiding users through setup and integration. Lumière also provides a status monitor, options to report issues, and direct contact channels for support, ensuring a smooth user experience.
Technical Details
Lumière PayCheck operates by monitoring x402 endpoints primarily on the Base and Solana blockchains, leveraging real-money test payments to validate service delivery. It utilizes a public and deterministic scoring formula based on uptime, latency, stability, and delivery. The system integrates with the MCP server and provides an SDK for enforcing payment policies and generating verifiable signed receipts. This robust infrastructure ensures secure and transparent interactions within the decentralized API economy.
Pros and Cons
Pros: Prevents financial loss from unreliable or malicious APIs; Automates critical business follow-up tasks, saving time and resources; Transparent and deterministic API grading system; Supports payments on major blockchains (Base, Solana); Offers flexible pricing including free tiers and trials; Provides detailed audit trails and spending controls for agents.
Cons: Automated follow-up agents require initial setup; Some advanced features are exclusive to paid subscription tiers; Integration with existing systems might require developer effort.
Conclusion
Lumière PayCheck offers an indispensable solution for enhancing the security and efficiency of AI agent operations and business automation. By providing a trusted layer for API payments and streamlining essential business follow-ups, it empowers both AI agents and human teams to operate with greater confidence and productivity. Explore Lumière PayCheck today to safeguard your AI agent investments and automate your critical business workflows.
Comments will be available once the project is launched.
Scraper Email for Product Hunt Daily leaderboard and peerlist, tinylaunch, uneed.
Get your brand featured here
Submit Your Startup to 100+ Directories | Submitator
Automated startup directory submission service. Get listed on Product Hunt, BetaList, Indie Hackers & 100+ directories for SEO backlinks and DR boost. From $29.
$40
Boost Your Domain Rating — DoFollow Backlinks (DR 30–70) from $30
Raise your Ahrefs Domain Rating with 5 - 50 dofollow backlinks from DR 30–60 sites — from $50, guaranteed to improve your DR or your money back.
$35
DirEasy - The Best Directory Boilerplate with AI | DirEasy
The best directory boilerplate, packed with AI, Listings, Payment, Submission, CMS, Blog, Authentication, Newsletter, SEO and more.
$30