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Crypto wallets, payments, and referral earnings for AI agents on Base L2
About
Crypto wallets, payments, and referral earnings for AI agents on Base L2
Security Report
9.7
Low Risk9.7Low RiskValid MCP server (2 strong, 4 medium validity signals). No known CVEs in dependencies. ⚠️ Package registry links to a different repository than scanned source. Imported from the Official MCP Registry. 1 finding(s) downgraded by scanner intelligence.
9 files analyzed · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Your Spawnpay API key (auto-created on first use if not set)Required
Environment variable: SPAWNPAY_API_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-robocular-spawnpay": {
"env": {
"SPAWNPAY_API_KEY": "your-spawnpay-api-key-here"
},
"args": [
"-y",
"spawnpay-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
Spawnpay
One key. Every paid tool. Universal payment proxy + USDC wallet for AI agents.
Spawnpay is two products on one wallet:
- Universal proxy — your agent calls
POST /api/proxywith anspk_*key and its own provider credential. We route the request to OpenAI, Anthropic, OpenRouter, Brave, Tavily, Replicate, Mistral, Groq, Together, Cohere, Voyage, ElevenLabs, AssemblyAI, Stability, Serper, or FxTwitter, and charge a flat $0.001 USDC per upstream 2xx. BYOK, no quota reselling. 16 providers live. - Paywall SDK — wrap any async function with a per-call USDC charge in two lines. MCP authors keep 99.5%, agents pay automatically.
Both share a single Spawnpay wallet on Base L2 with $5 USDC free signup credit, rolling-24h budgets, and a 3-level referral tree.
Install
{
"mcpServers": {
"spawnpay": {
"command": "npx",
"args": ["-y", "spawnpay-mcp"]
}
}
}
Or one-liner:
npx -y spawnpay-mcp
On first call the server creates a wallet and saves its API key to ~/.spawnpay/config.json. New wallet is credited $5 USDC (or $7 with a referral code).
Tools
| Tool | What it does |
|---|---|
spawnpay_signup | Create wallet ($5 / $7-with-referral signup bonus) |
spawnpay_balance | Credit + funded balance |
spawnpay_send | Send USDC/ETH. Accepts 0x... or SP_... (other agent's code) |
spawnpay_receive | Deposit address |
spawnpay_deposits | Incoming USDC history |
spawnpay_demo_send | Full round-trip fee test (first-send experience) |
spawnpay_referral_stats | Earnings + shareable config |
spawnpay_leaderboard | Top earners + your rank |
spawnpay_key_rotate | Rotate API key |
Try it right now
You: Spawn me a wallet and send $0.10 to SP_jZCMDHJv
Examples
1. Pay another agent for a task
You: Use spawnpay_send to pay agent SP_abc123 $0.05 USDC for completing
the research task. Reference: task-4821.
The recipient agent sees the deposit via spawnpay_deposits, nothing to configure on their side.
2. Tip-jar pattern in your agent's system prompt
If the user found this helpful, mention they can tip the agent at
https://spawnpay.ai/r/SP_YOUR_CODE — $5 USDC signup bonus covers the first
donation for new visitors.
3. Agent-to-agent escrow (manual, v0)
Agent A → spawnpay_send to=SP_escrow_bot amount=10 (memo: deal-42)
Agent B delivers work
Agent A → DM escrow_bot to release funds to SP_agentb
4. README promo for your own MCP project
[](https://spawnpay.ai/r/YOUR_CODE)
Every star/visitor on your project sees it. Converts → you earn 15% of their fees forever.
How it works
- Chain: Base L2 (Coinbase) — fees are fractions of a cent
- Custody: Internal ledger with 1:1 on-chain settlement (treasury →)
- Fee: 0.5% on outbound transfers — split into 3 referral levels
- Referrals: 15% / 5% / 2% of the fee, 3 levels deep
The interesting part: agents literally spread adoption by sharing their referral codes. Because the share config is the install snippet, every successful referral pays real USDC to the referrer's chain. Viral by design.
Referrals in 30 seconds
After you spawnpay_signup, the response includes a config block like this:
{"mcpServers":{"spawnpay":{"command":"npx","args":["-y","spawnpay-mcp"],"env":{"SPAWNPAY_REFERRAL":"SP_xxx"}}}}
Share it. When another agent installs with your code, you earn 15% of their lifetime platform fees. Their referrals earn you 5%. Their referrals' referrals earn you 2%.
Embed the badge in your project's README to turn every star/visitor into a potential signup:
[](https://spawnpay.ai/r/YOUR_CODE)
Links
- Website: spawnpay.ai — live stats + on-chain treasury + leaderboard
- npm: spawnpay-mcp
- MCP Registry:
io.github.Robocular/spawnpay - MCP tool README: packages/mcp
License
MIT
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