A-Pay Protocol
Rank #160,219smithery/apayprotocol/apay
Universal HTTP 402 Micropayment Protocol & Autonomous Economic Settlement Engine for AI Agents on Base Layer 2. A-Pay enables any AI agent (Claude Desktop, Cursor, Cline, AutoGen, CrewAI, LangChain) to discover, inspect, and settle pay-per-call API requests in USDC or $APAY in under 15ms without credit cards, KYC, or human friction. ### 🛠️ Included Tools: - **`apay_request`**: Probe and automatically pay HTTP 402 micropayments on Base L2 within configurable budget limits. - **`apay_get_wallet_status`**: Inspect active session wallet, network, spending limits, and total spend. - **`apay_set_budget`**: Configure runtime spending guardrails (per-call & daily limits in USDC / $APAY). - **`apay_inspect_endpoint`**: Inspect an endpoint for HTTP 402 terms, pricing quote, and receiver address without spending funds. - **`apay_get_balance`**: Inspect live on-chain balances (ETH for gas, USDC, $APAY tokens) on Base L2. ### 🌐 Official Identity: - Domain: https://apayprotocol.org - Basename:
What you can do with A-Pay Protocol
A-Pay Protocol is a Model Context Protocol (MCP) server. It ranks #160,219 of 162,202 active servers on MCP Toplist. A-Pay Protocol is listed on Smithery; no version information is available from the registries that list it or from its repository. It was first listed on Oct 15, 2026.
Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. Its registry listings below are the authority on what it does.
What A-Pay Protocol can and cannot do
Not verifiedMCP Toplist has not catalogued this server's tools or limitations. Check its registry listings below.
What you need before using A-Pay Protocol
The hosted endpoint is declared as gated by authentication — connect via its URL and authenticate with the provider (OAuth flow or an API key/header, per its docs).
Declared by Smithery, last synced Oct 28, 2026. Not independently verified by MCP Toplist.
Hosted endpoint declared as requiring authentication.
Connect A-Pay Protocol and confirm it works
claude mcp add --transport http apay https://server.smithery.ai/apayprotocol/apay/mcpThis endpoint requires authentication — see the server’s docs for credentials.
[mcp_servers.apay]
url = "https://server.smithery.ai/apayprotocol/apay/mcp"Add to ~/.codex/config.toml. This endpoint requires authentication — see the server’s docs for credentials.
https://server.smithery.ai/apayprotocol/apay/mcpSettings → Connectors → “Add custom connector”, then paste this URL. This endpoint requires authentication — see the server’s docs for credentials.
{
"mcpServers": {
"apay": {
"url": "https://server.smithery.ai/apayprotocol/apay/mcp"
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). This endpoint requires authentication — see the server’s docs for credentials.
{
"servers": {
"apay": {
"type": "http",
"url": "https://server.smithery.ai/apayprotocol/apay/mcp"
}
}
}Save as .vscode/mcp.json in your workspace. This endpoint requires authentication — see the server’s docs for credentials.
{
"mcpServers": {
"apay": {
"serverUrl": "https://server.smithery.ai/apayprotocol/apay/mcp"
}
}
}Add to ~/.codeium/windsurf/mcp_config.json. This endpoint requires authentication — see the server’s docs for credentials.
{
"mcpServers": {
"apay": {
"url": "https://server.smithery.ai/apayprotocol/apay/mcp"
}
}
}This endpoint requires authentication — see the server’s docs for credentials.
After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.
What changed, and when this was checked
- First listed
- Oct 15, 2026
- Version history
- Unavailable — no registry exposes versions and no release tags were found
- Requirements evidence
- Declared by Smithery, last synced Oct 28, 2026. Not independently verified by MCP Toplist.
- Profile checked
- Not yet — purpose, capabilities and requirements above come from registry data only
- Ranking data as of
- Oct 28, 2026
- Smithery ↗listed since Oct 28, 2026 · still listed
Do you maintain A-Pay Protocol? to correct or enrich this profile.
Version information unavailable
The registry that lists this server does not expose version metadata, and no release tags were found on the linked repository. MCP Toplist cannot say how, or whether, this server is versioned.
Ranks ahead of 1,983 of 162,202 servers on MCP Toplist.
Show your rank
Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.
[](https://mcptoplist.com/server/smithery%2Fapayprotocol%2Fapay)<a href="https://mcptoplist.com/server/smithery%2Fapayprotocol%2Fapay"><img src="https://mcptoplist.com/badge/smithery%2Fapayprotocol%2Fapay.svg" alt="MCP Toplist: #160,219 of 162,202" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Frequently asked questions
- Is A-Pay Protocol listed on the Official MCP Registry?
- A-Pay Protocol is not on the Official MCP Registry. It is listed on Smithery.
- How many versions does A-Pay Protocol have?
- Version information is unavailable for A-Pay Protocol: no registry that lists it exposes version metadata, and no release tags were found on its repository.
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