Monetization support via Agent Bazaar (open billing standard)

[TombStoneDash]

Hey 👋

I'm building Agent Bazaar — an open marketplace where MCP server developers can monetize their tools with per-call billing.

Why this might interest openapi-mcp-server:
Letting AI navigate complex OpenAPI specs is super useful. A hosted premium version (pre-loaded popular APIs, faster parsing, richer analysis) could easily monetize. Agent Bazaar provides:

• Per-call metering — charge per API exploration query
• Signed receipts — HMAC-SHA256 proof of every transaction
• Trust scores — verified provider badges, SLA tracking
• Open billing spec — MIT licensed, portable

We published an open billing standard — you're never locked in.

Live: https://noui.bot/docs/bazaar | Spec: https://noui.bot/specs/mcp-billing-v1

Happy to help with integration!

[TombStoneDash]

Hey 👋 Quick update on this — the SDK is now live on npm!

npm install @forthebots/bazaar-sdk

Here's a minimal integration example:

import { BazaarProxy } from '@forthebots/bazaar-sdk';
const proxy = new BazaarProxy({ apiKey: process.env.BAZAAR_API_KEY });
// Wrap any MCP tool call to add billing
const result = await proxy.call('your-tool-name', params);
// That's it — billing, metering, and receipts handled automatically

The full billing spec is published at noui.bot/specs/mcp-billing-v1 — it covers metering, receipts, and how the proxy layer works without requiring changes to your existing tool implementations.

We're doing a Show HN on March 4 — would love any feedback, questions, or ideas from this community. If you're interested in testing the integration with this project, happy to help get it wired up.

[evidai]

For maintainers reading this thread — adding a data point on a different angle.

We've been shipping LemonCake (https://lemoncake.xyz). The design recently shifted: instead of "billing for human-facing API customers", the gateway now speaks x402 so AI agents can pay autonomously.

• Your MCP/API returns 402 + accepts[] when budget/auth is missing
• Agent presents a hard-capped Buyer Key, mints a Pay Token (JWT), passes Bearer
• Caps enforced server-side (per-mint / daily / monthly). Cannot exceed.
• 0% fee for the first 3,000 calls, 3% after. Live on Stripe off-session.
• Custody-free — we never hold funds.

If you're building an MCP that ends up wanted-but-uncharged (which is most), this gets you discoverable on the agent-payment side without rewriting your billing. 30-second demo (no signup): https://lemoncake.xyz/demo

(Disclosure: I'm working on LemonCake. Not affiliated with Agent Bazaar — different design, sharing as a comparison point so maintainers can compare options.)