There are 10,000+ MCP servers in the wild. Fewer than 5% have any form of monetization.
Developers build incredible AI tools, publish them for free, then abandon them because there's no revenue to sustain development. The MCP ecosystem has a payment problem.
I built https://settlegrid.ai to fix this — an open-source SDK that adds per-call billing to any MCP tool with 2 lines of code.
Step 1: Install the SDK
npm install @settlegrid/mcp
Or scaffold a complete project instantly:
npx create-settlegrid-tool
Step 2: Register Your Tool
Sign up free at https://settlegrid.ai/register. Create a tool, set your slug, choose a pricing model. No credit card required.
Step 3: Wrap Your Handler
import { settlegrid } from '@settlegrid/mcp'
const sg = settlegrid.init({
toolSlug: 'my-web-search',
pricing: { defaultCostCents: 5 },
})
const handler = sg.wrap(async (query) => {
const results = await searchTheWeb(query)
return results
})
That's it. Every call now validates the consumer's API key, checks their credit balance, executes your function, meters usage, and splits revenue — all in under 50ms.
Step 4: Choose Your Pricing
SettleGrid supports 6 pricing models:
- Per-invocation — Search, lookups → 5¢/call
- Per-token — LLM wrappers → $0.001/1K tokens
- Per-byte — File processing → 1¢/MB
- Per-second — Video/ML inference → 2¢/second
- Tiered — Multi-method tools → read 1¢, write 5¢
- Outcome-based — Lead gen, extraction → 25¢ on success
Benchmarks by tool type:
- Simple lookups/search: 1-5 cents per call
- Data enrichment: 5-25 cents per call
- AI-powered analysis: 10-50 cents per call
- Complex workflows: 25 cents - $1+ per call
The Revenue Math
100 AI agents × 20 calls/day × 5 cents = $3,000/month
And you keep 100% on the Free tier (0% platform fee). Paid tiers take 5%.
Step 5: Get Discovered
This is where SettleGrid is different from "just add Stripe." Your tool is automatically discoverable across:
- SettleGrid Showcase — consumers browse and purchase credits
- Discovery API — directories and apps query your tools programmatically
- MCP Discovery Server — AI agents find your tools natively via MCP
- 8+ MCP registries — Official MCP Registry, Smithery, Glama, PulseMCP, and more
Every active tool is indexed everywhere. No extra configuration.
What I've Built So Far
- 1,017 open-source MCP server templates with billing pre-wired (https://settlegrid.ai/servers)
- 10 payment protocol support — MCP, MPP (Stripe), x402 (Coinbase), AP2 (Google), Visa TAP, and 5 more
- CLI scaffolder — npx create-settlegrid-tool generates a complete project
- Free Monetization Handbook — pricing strategies, growth tactics, revenue benchmarks (https://settlegrid.ai/learn/handbook)
The Free Tier
- 25,000 ops/month
- 0% take rate — you keep 100%
- Unlimited tools
- No credit card
- $1 minimum payout
Most developers will never need to upgrade.
Links
- Website: https://settlegrid.ai
- SDK: https://www.npmjs.com/package/@settlegrid/mcp
- GitHub: https://github.com/lexwhiting/settlegrid
- Handbook: https://settlegrid.ai/learn/handbook
- Docs: https://settlegrid.ai/docs
What tools would you want to monetize? I'm curious what categories people think are underserved. Drop a comment below.
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