skills.rest
Merit-Systems
Merit-SystemsOFFICIAL
Explore all skills by this author →
Website𝕏@merit_systemsGitHub

agentcash

Pay for x402 and MPP-protected API endpoints with on-chain USDC.

16|12|Updated Feb 19, 2026
Search Tags:#x402#api-discovery#mpp#paid-apis#wallet-payments#agentcash#siwx
One-click install
npx skills add https://github.com/Merit-Systems/agentcash-skills --skill agentcash
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: agentcash
Source: https://github.com/Merit-Systems/agentcash-skills/tree/main/plugin/skills/agentcash
Command: npx skills add https://github.com/Merit-Systems/agentcash-skills --skill agentcash

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Enables authenticated, pay-per-call access to x402 and MPP-protected APIs using on-chain wallet payments so users can call premium endpoints without managing API keys or subscriptions.

Core Features & Use Cases

  • Wallet-based Payments: Automatically handles 402 payment challenges and signs USDC payments on Base or Solana networks.
  • Endpoint Discovery & Schema Checks: Search and discover available origins and endpoints, inspect schemas and pricing before calling.
  • Multi-service Support: Access research, enrichment, media generation, social scraping, uploads, email, and phone call APIs across stableenrich.dev, stablestudio.dev, stablesocial.dev, stableupload.dev, stableemail.dev, and stablephone.dev.
  • Use Case: Enrich a contact list by discovering the people-enrich endpoint on stableenrich.dev, checking the schema and pricing, then fetching enriched profiles while paying per successful request.

Quick Start

Use the agentcash skill to discover the people-enrich endpoint on stableenrich.dev and fetch enriched contact data for a target name.

Frequently Asked Questions about agentcash

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I pay for x402 API endpoints without using API keys?▼

You can pay for x402 or MPP-protected API endpoints by using your crypto wallet to handle 402 payment challenges and sign on-chain USDC payments, eliminating the need for traditional API keys or subscriptions.

What is the process for discovering API pricing and schemas before making a paid request?▼

Discovering API pricing and schemas is handled automatically by searching available origins and endpoints to inspect their schemas and pricing before you fetch data or trigger a paid wallet request.

Do I need a specific wallet balance to authenticate and fetch data from MPP-protected APIs?▼

Yes, you need a sufficient USDC balance on either the Base or Solana networks to successfully authenticate via SIWX and complete the paid requests for MPP-protected APIs.

Can I use wallet payments for tasks like web scraping and contact enrichment?▼

Yes, wallet payments support tasks like web research, social media scraping, people and company enrichment, AI media generation, file uploads, email sending, and phone calls across listed stable origins.

What are the limitations when using on-chain USDC for pay-per-call API access?▼

Limitations include requiring a USDC balance specifically on Base or Solana, and your wallet must successfully handle SIWX authentication and 402 payment challenges for every paid request to complete successfully.

Related Skills

Explore More Software Engineering Skills→
clawgameclawgame
1

pay-for-service

Automate paid API calls by paying USDC on x402 endpoints.

Community
Intermediate
gooseworks-aigooseworks-ai
1.1k

inbound-lead-enrichment

Enrich inbound leads with company and person research for CRM readiness.

Official
Advanced
Merit-SystemsMerit-Systems
16

agentcash-wallet

Orchestrate wallet-based paid fetch calls to x402/MPP APIs.

Official
Advanced
slice-soslice-so
22

erc8128

Sign and verify HTTP requests with Ethereum wallet signatures via ERC-8128.

Official
Advanced