x402 vs HPP x402 MCP Bridge
x402 is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑17.
x402 is a plugin bundle for AI coding tools published by calgooon. No marketplace we read lists it any more. HPP x402 MCP Bridge is an MCP server published by hpp-io. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-23. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.
Where each is published
| Marketplace |   HPP x402 MCP Bridge | |
|---|---|---|
| Community marketplace b-open-io/claude-plugins | Removed on 2026-10-17 Version: not stated Forks (GitHub): 1 Stars (GitHub): 1 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.23 Downloads/month (npm): 1 251 Downloads/week (npm): 170 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | x402no longer listed · | HPP x402 MCP Bridge |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 1 |
| Stars (GitHub) (differs) | 1 | 0 |
| Forks (GitHub) (differs) | 1 | 0 |
| Last release (differs) | Not published | 2026-10-22 |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (@hpp-io/x402-mcp-bridge) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 5, secrets among them: 1 |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/calgooon/x402 | github.com/hpp-io/x402-mcp-bridge |
| Changes in the last 7 days (differs) | 2 | 1 |
| First seen (differs) | 2026-10-15 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.
What to use instead of x402
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
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Paid token risk and security intelligence for AI agents over MCP with x402 payments.
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Verify and settle x402 stablecoin payments; browse the PayAI Bazaar of x402-payable resources.
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Test any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS.
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70+ pay-per-call security, crypto, and data tools for AI agents via x402 USDC micropayments on Base
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Give AI agents a Bitcoin wallet with Lightning Network payments and L402 support.
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Bitcoin AI + Nostr WoT scoring (12 tools). L402 pay-per-call. 50 free WoT/day.
What each says it does
x402
BSV-authenticated and paid API requests - BRC-31 auth, 402 micropayments, and automatic refund handling via MetaNet Client
HPP x402 MCP Bridge
MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per call.
How to run each
x402
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
HPP x402 MCP Bridge As a local MCP server: npm package
claude mcp add --env "DELEGATE_PRIVATE_KEY=<YOUR_DELEGATE_PRIVATE_KEY>" --transport stdio x402-mcp-bridge -- npx -y @hpp-io/x402-mcp-bridgeRequires: DELEGATE_PRIVATE_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
The marketplaces of x402 publish no settings it asks for, so we do not compare settings.
What it can do: x402 · What it can do: HPP x402 MCP Bridge · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.