agentcash
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,
Install
npx skills add https://github.com/merit-systems/agentcash-skills --skill agentcashAgentCash — Paid API Access
Call any x402 or MPP-protected API with automatic wallet authentication and payment. No API keys or subscriptions required.
Check Balance
agentcash.get_balance()
Returns total USDC balance across supported networks. Use this before paid calls to confirm funds are available.
Redeem Invite Code
agentcash.redeem_invite(code="YOUR_CODE")
One-time use per code. Credits added instantly. Run agentcash.get_balance() after to verify.
Deposit USDC
- Call
agentcash.list_accounts()to get per-network wallet addresses and deposit links - Send USDC on Base network (eip155:8453) or Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp) to the matching address
- Or open the returned deposit link for the selected network
Important: Only Base or Solana network USDC. Other networks or tokens will be lost.
Calling Paid APIs
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:
| Task | Origin (skip search) |
|---|---|
| Look up a person or company | stableenrich.dev |
| Generate an image or video | stablestudio.dev |
| Get Instagram/TikTok data | stablesocial.dev |
| Send an email | stableemail.dev |
| Upload a file | stableupload.dev |
Only use search when none of the listed origins fit:
agentcash.search(query="send physical mail")
Returns matching origins with endpoints and pricing (the top match often includes schema so you can call fetch immediately).
2. Discover endpoints
agentcash.discover_api_endpoints(url="https://stableenrich.dev")
Returns all endpoints, pricing, and usage instructions. Read the instructions field — it has critical endpoint-specific guidance.
3. Check schema (optional)
agentcash.check_endpoint_schema(url="https://stableenrich.dev/api/fullenrich/people-search")
Returns full request/response JSON schemas and pricing for a specific endpoint.
4. Make a paid request
agentcash.fetch(
url="https://stableenrich.dev/api/fullenrich/people-search",
method="POST",
body={
"current_company_domains": [{"value": "stripe.com"}],
"current_position_seniority_level": [{"value": "VP"}]
}
)
Payment is automatic: sends request, gets 402 challenge, signs USDC payment, retries with credential, returns result. Payments settle only on success (2xx) — failed requests cost nothing.
agentcash.fetch also handles SIWX-authenticated endpoints automatically when the route supports that flow.
Available Services
| Origin | Service | What it does |
|---|---|---|
https://stableenrich.dev |
StableEnrich | FullEnrich (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) |
https://stableupload.dev |
StableUpload | File hosting ($0.005-$2.00 by size, tier-based retention) + static site hosting with custom domains |
https://stablestudio.dev |
StableStudio | AI image/video generation: GPT Image, Flux, Grok, Nano Banana, Sora, Veo, Seedance, Wan, image-to-SVG |
https://stablesocial.dev |
StableSocial | Social media data: TikTok, Instagram, YouTube, Facebook, LinkedIn, Reddit, Rumble, GitHub, ad libraries (Scrape Creators), plus Lightreel UGC research agent. $0.06/call, async jobs |
https://stableemail.dev |
StableEmail | Send emails ($0.02), forwarding inboxes ($1/mo), custom subdomains ($5) |
https://stablephone.dev |
StablePhone | AI phone calls ($0.54), phone numbers ($20), top-ups ($15) |
https://stablejobs.dev |
StableJobs | Job search via Coresignal (preview $0.10/page, collect $0.20/job) |
https://stabletravel.dev |
StableTravel | Flight prices and booking (Google Flights), award availability (Seats.aero), live flight tracking and airport data (FlightAware) |
https://stablebrowser.dev |
StableBrowser | Cloud browser automation: create a session ($0.10), then AI-powered navigate/act/extract/observe/screenshot (free SIWX) |
Run agentcash.discover_api_endpoints(url="<origin>") on any origin to see its full endpoint catalog.
Quick Reference
| Task | Tool |
|---|---|
| Check balance | agentcash.get_balance |
| Get deposit links and wallet addresses | agentcash.list_accounts |
| Redeem code | agentcash.redeem_invite(code="...") |
| Find APIs by natural language | agentcash.search(query="...") |
| Discover endpoints | agentcash.discover_api_endpoints(url="...") |
| Check pricing/schema | agentcash.check_endpoint_schema(url="...") |
| Paid POST request | agentcash.fetch(url="...", method="POST", body={...}) |
| Paid GET request | agentcash.fetch(url="...") |
| Authenticated GET (no payment) | agentcash.fetch(url="...") |
Tips
- Skip search when a listed origin fits the task. Go straight to
discover_api_endpoints. Only usesearchwhen no origin in the Available Services table matches. - Always discover before calling arbitrary paths — the
instructionsfield has critical endpoint-specific patterns and required parameters. - Payments settle only on success (2xx) — failed requests cost nothing.
- Use
check_endpoint_schemawhen unsure about request/response format. - Independent
agentcash.fetchcalls can run in parallel for better throughput. - Network: Base (eip155:8453) or Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp), Currency: USDC.
Troubleshooting
| Issue | Solution |
|---|---|
| "MCP tool not found" | Reinstall MCP, restart IDE |
| "Insufficient balance" | Run agentcash.get_balance(), then agentcash.list_accounts() or redeem an invite code |
| "Payment failed" | Transient error — retry the request |
| "Invalid invite code" | Code already used or doesn't exist |
| Balance not updating | Wait for Base or Solana network confirmation (~2 sec) |