A-Pay Protocol vs io.github.pay-skill/pay-mcp
A-Pay Protocol is an MCP server published by neuralaisofficial-lang. Marketplaces we read that list it: 1 (Official MCP Registry). io.github.pay-skill/pay-mcp is an MCP server published by pay-skill. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-05. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  A-Pay Protocol |  io.github.pay-skill/pay-mcp |
|---|---|---|
| Official MCP Registry | Listed Version: 0.1.8 Downloads/month (PyPI): 897 Downloads/week (PyPI): 345 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 0.2.8 Downloads/month (npm): 526 Downloads/week (npm): 175 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 | A-Pay Protocol | io.github.pay-skill/pay-mcp |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) | 0 | 0 |
| Forks (GitHub) | 0 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (apay-network.vercel.app/api/mcp) | On your machine (@pay-skill/mcp) |
| Transport (differs) | Streamable HTTP | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 5, secrets among them: 1 | 2, secrets among them: 1 |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/neuralaisofficial-lang/a_pay | github.com/pay-skill/pay-mcp |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | Responded 2 h ago | no remote endpoint we check |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
A-Pay Protocol
Universal HTTP 402 Micropayment Protocol & Autonomous Economic Settlement Engine for AI Agents
io.github.pay-skill/pay-mcp
USDC payments for AI agents on Base — direct, tabs, x402 paywalls, discovery
How to run each
A-Pay Protocol As a remote MCP server
claude mcp add --transport http apay https://apay-network.vercel.app/api/mcpRequires: APAY_PRIVATE_KEY (secret)
io.github.pay-skill/pay-mcp As a local MCP server: npm package
claude mcp add --env "PAYSKILL_SIGNER_KEY=<YOUR_PAYSKILL_SIGNER_KEY>" --transport stdio pay-mcp -- npx -y @pay-skill/mcpRequires: PAYSKILL_SIGNER_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only A-Pay Protocol has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Only A-Pay Protocol asks for
APAY_CURRENCYAPAY_DAILY_BUDGETAPAY_MAX_PER_CALLAPAY_NETWORKAPAY_PRIVATE_KEY (secret)
Only io.github.pay-skill/pay-mcp asks for
PAYSKILL_SIGNER_KEY (secret)PAY_NETWORK
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: A-Pay Protocol · What it can do: io.github.pay-skill/pay-mcp · Compare two other plugins
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.