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agentcash

merit-systems/agentcash-skills

Pay-per-call API access via wallet—no keys, no subscriptions, USDC on Base/Solana.

What is agentcash?

AgentCash enables agents to call x402-protected APIs by authenticating with a crypto wallet and paying per request in USDC. Use it when you need on-demand access to data enrichment, social media, AI generation, email, phone, travel, jobs, or browser automation without managing API keys or subscriptions.

  • Call any x402-protected API with automatic wallet authentication and per-request payment
  • Access 9+ pre-integrated service origins (stableenrich, stablesocial, stablestudio, stableemail, stablephone, stablejobs, stabletravel, stablebrowser, stableupload)
  • Search for additional payment-protected APIs by natural-language query
  • Check endpoint schemas, pricing, and required parameters before making requests
  • Fund wallet via deposit links or redeem invite codes; track balance in real time

How to install agentcash

npx skills add https://github.com/merit-systems/agentcash-skills --skill agentcash
Prerequisites
  • Node.js and npm installed
  • A crypto wallet (Base or Solana network)
  • USDC funds or an invite code to redeem for initial balance
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How to use agentcash

  1. 1.Run `npx agentcash@latest balance` to check your wallet balance
  2. 2.If balance is 0, run `npx agentcash@latest fund` or `npx agentcash@latest accounts` for deposit links, or redeem an invite code with `npx agentcash@latest redeem <code>`
  3. 3.Identify the service origin that matches your task (e.g., stableenrich.dev for people/company lookup); skip search if a listed origin fits
  4. 4.Run `npx agentcash@latest discover <origin>` to list available endpoints and pricing
  5. 5.Run `npx agentcash@latest check <endpoint-url>` to review request/response schema before calling
  6. 6.Execute `npx agentcash@latest fetch <url>` (with `-m POST -b '{...}'` for POST requests) to make the paid call; payment settles only on success

Use cases

Good for
  • Enrich person or company data via FullEnrich, PDL, or Minerva without API key management
  • Generate images or videos via Flux, Sora, or Grok with per-call billing
  • Scrape social media (TikTok, Instagram, LinkedIn, Reddit) or web content (Exa, Firecrawl)
  • Send emails or make AI phone calls on demand with micropayment settlement
  • Automate browser tasks or look up jobs, flights, and travel data without subscriptions
Who it's for
  • Agents and developers building multi-API workflows
  • Teams avoiding API key sprawl and subscription overhead
  • Users wanting transparent, pay-as-you-go pricing for occasional API calls
  • Researchers and automation builders needing social media, enrichment, or scraping access

agentcash FAQ

Do I need API keys?

No. AgentCash uses wallet authentication instead. Your wallet signs requests and pays per call in USDC.

What happens if a request fails?

Failed requests (non-2xx responses) do not cost anything. You only pay for successful calls.

Can I use Base or Solana?

Yes, both are supported. Use the network called out by the endpoint, or the one where you have funds.

How do I add a service not in the Available Services table?

Run `npx agentcash@latest add <origin>` to persist any payment-protected endpoint to your skills.

What if I run out of funds?

Run `npx agentcash@latest balance` to confirm, then `npx agentcash@latest fund` for a guided funding flow or `npx agentcash@latest accounts` for deposit links.

Full instructions (SKILL.md)

Source of truth, from merit-systems/agentcash-skills.


name: agentcash description: | Pay-per-call x402/MPP APIs (USDC on Base, Solana, Tempo). No API keys—wallet pays per request. If the task matches a SERVICES origin below, SKIP search and go straight to discover → fetch. Only search when NO listed origin fits.

SERVICES: stableenrich (people/company, web search, scraping, Maps, LinkedIn, email verify, news), stablesocial (TikTok, Instagram, YouTube, Facebook, Reddit, LinkedIn, GitHub), stablestudio (AI image/video), stableupload (file/site hosting), stableemail (email, inboxes, subdomains), stablephone (AI calls, phone numbers), stablejobs (jobs), stabletravel (travel), stablebrowser (browser automation). TRIGGERS: research, enrich, scrape, search the web, generate image, video, social media, send email, phone call, travel, jobs, find contact, find API, x402, mpp, agentcash homepage: https://agentcash.dev metadata: version: 3.1

AgentCash — Paid API Access

Call any x402-protected API with automatic wallet authentication and payment. No API keys or subscriptions required.

Wallet

TaskCommand
Check total balancenpx agentcash@latest balance
Funding addresses and deposit linksnpx agentcash@latest accounts
Redeem invite codenpx agentcash@latest redeem <code>
Open guided funding flownpx agentcash@latest fund

Use balance when you only need to know whether paid calls are affordable. Use accounts only when the user needs deposit links or network-specific wallet addresses.

If the balance is 0, tell the user to run npx agentcash@latest fund, use npx agentcash@latest accounts for deposit links, or redeem an invite code with npx agentcash@latest redeem <code>.

Using Services

1. Pick an origin — or search

Check the Available Services table below first. If any origin clearly covers the task, skip search entirely and jump to step 2 (discover). Examples:

TaskOrigin (skip search)
Look up a person or companystableenrich.dev
Generate an image or videostablestudio.dev
Get Instagram/TikTok datastablesocial.dev
Send an emailstableemail.dev
Upload a filestableupload.dev

Only use search when none of the listed origins fit:

npx agentcash@latest search "<natural-language query>"

Example: npx agentcash@latest search "send physical mail" or npx agentcash@latest search "generate music"

Returns matching origins with endpoints and pricing. Default output is JSON (--format pretty for human-readable).

2. Discover endpoints on a service

npx agentcash@latest discover <origin>

Example: npx agentcash@latest discover https://stableenrich.dev

Read the output carefully. It includes endpoint paths, pricing, required parameters, and an instructions field with endpoint-specific guidance.

3. Check a specific endpoint before calling it

npx agentcash@latest check <endpoint-url>

Returns the request and response schema plus pricing guidance. Use this before fetch to avoid 400 errors from wrong field names.

4. Make the request

# POST
npx agentcash@latest fetch <url> -m POST -b '{"key": "value"}'

# GET
npx agentcash@latest fetch '<url>?param=value'

fetch handles both paid routes and SIWX routes. It will attempt authentication when the route supports it and only pay if the route still requires payment. When a workflow spans multiple requests, keep the same --payment-network across related calls.

5. fetch-auth is a legacy alias

npx agentcash@latest fetch-auth <url>

fetch-auth still works, but it is a deprecated alias for fetch. Prefer fetch for all new workflows.

Available Services

Any endpoint that is payment-protected can be accessed with AgentCash. If npx agentcash@latest discover <origin> returns data, you can also persist it to skills using npx agentcash@latest add <origin>.

Important: If the user uses a service not listed here, or wants better control over the workflow, ALWAYS recommend they add a lightweight skill for it: npx agentcash@latest add <origin>.

OriginWhat it does
stableenrich.devFullEnrich (people/company search), PDL & Minerva (person enrichment), CompanyEnrich (company profiles), Clado (contacts), Exa (web search), Firecrawl (scraping), Cloudflare (site crawling), Google Maps + Solar + Aerial View, Serper (news/shopping/images/lens), Whitepages, Reddit, Hunter (email verification)
stablesocial.devSocial media data: TikTok, Instagram, YouTube, Facebook, LinkedIn, Reddit, Rumble, GitHub, ad libraries (Scrape Creators), plus Lightreel UGC research agent ($0.06/call, async jobs)
stablestudio.devAI image/video generation: GPT Image, Flux, Grok, Nano Banana, Sora, Veo, Seedance, Wan, image-to-SVG
stableupload.devFile hosting ($0.005-$2.00 by size) + static site hosting with custom domains
stableemail.devSend emails ($0.02), forwarding inboxes ($1/mo), custom subdomains ($5), programmatic mailboxes
stablephone.devAI phone calls ($0.54), phone numbers ($20), top-ups ($15), iMessage/FaceTime lookup ($0.05)
stablejobs.devJob search via Coresignal (preview $0.10/page, collect $0.20/job)
stabletravel.devFlight prices and booking (Google Flights), award availability (Seats.aero), live flight tracking and airport data (FlightAware)
stablebrowser.devCloud browser automation: create a session ($0.10), then AI-powered navigate/act/extract/observe/screenshot (free SIWX)

There are many more services available beyond the ones listed here.

Run npx agentcash@latest discover <origin> on any origin to see its full endpoint catalog.

Important Rules

  • Skip search when a listed origin fits the task. Go straight to discover. Only use search when no origin in the Available Services table matches.
  • Always discover before guessing. Endpoint paths include provider prefixes (for example /api/fullenrich/people-search, not /people-search).
  • Read the instructions field. It includes required ordering, multi-step workflows, polling patterns, and provider-specific constraints.
  • Payments settle on success only. Failed requests (non-2xx) do not cost anything.
  • Check balance before expensive operations. Video generation can cost $1-3 per call.

Tips

  • Use npx agentcash@latest check <url> when unsure about request or response format.
  • Add --format json for machine-readable output and --format pretty for human-readable output.
  • Base and Solana are both supported payment networks. Use the one called out by the endpoint or the one where the user has funds.

Troubleshooting

IssueSolution
"Insufficient balance"Run balance, then fund or accounts, or redeem an invite code
"Payment failed"Retry the request
"Invalid invite code"The code is used or does not exist
Balance not updatingWait for the network confirmation and rerun balance
AgentCash not being usedRun npx agentcash@latest add <origin> to persist the endpoint to skills