x402 Seller MCP server

by entreprisedaney33-rgb·io.github.entreprisedaney33-rgb/x402-seller-mcp·v0.1.1

Pay-per-call MCP tools (crypto/DeFi data, web reading, AI tasks) in USDC over x402 on Base.

B80/100grade B

What users say

No reviews yet

Safety scan

B80/100

Adoption

Growing

0 stars32 downloads/wk

Reviews

Nobody has reviewed x402 Seller yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

No tool declarations could be read from the package source. They show once the server is installed.

scanner v0.1.9 · 2026-09-20 · same rubric, same numbers if you re-run it

no findings

Code scan5 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitystatic API keys via environment variables6/15
Maintenancelast push 15 days ago15/15
Maintainer identityregistry namespace matches repository owner6/10

Overall 80/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

Runs npx -y x402-seller-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add x402-seller-mcp -- npx -y x402-seller-mcp

Is x402 Seller MCP server safe?: Mostly: it is graded B (80/100). Read the x402 Seller safety report
How do I install x402 Seller?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does x402 Seller need an API key?: Yes. The registry entry asks for BUYER_PRIVATE_KEY.
Is x402 Seller maintained?: The last commit was 15 days ago (2026-09-05). The latest release is v0.1.1.
What can I use instead of x402 Seller?: Servers from other publishers that do the same job: Blockrun MCP server, Agent402.Tools: pay-per-call web tools MCP server and FiatDock MCP server. Compare all x402 Seller alternatives.

Same job from other publishers: the closest match first, then the best rated.

Blockrun
Web search, deep research, prediction markets & crypto data for AI agents. Pay per call via x402.
not reviewed
Established
B
Agent402.Tools: pay-per-call web tools
Agentic Finance: 500+ agent tools, multi-chain USDC over x402 or MPP, free via PoW or card credits
not reviewed
Established
A
FiatDock
MCP marketplace: AI agents buy services from other agents per call in USDC, plus a bank cash-out
not reviewed
Growing
B
Orla
Personal, family and business books over fiat and crypto. Reads and records; it cannot pay.
not reviewed
Growing
A
AgentServices
52 paid x402 API endpoints for AI agents — crypto, data, DeFi, market intelligence.
not reviewed
Growing
A

Local package. It runs on your machine, not through the gateway.

BUYER_PRIVATE_KEYsecretEVM private key (0x...) of a throwaway wallet funded with a small amount of USDC on Base. Leave unset for explain-only mode (tool calls describe the 402 payment challenge instead of paying).
X402_ORIGINWhich x402-compatible server to expose as MCP tools.

Claim it to keep the listing current and reply to reviews. Claiming never changes the grade or hides a review.

Shows the safety grade and links back to this page. It updates itself after every scan and review.

[![mcp.market](https://mcp.market/badge/entreprisedaney33-rgb-x402-seller-mcp.svg)](https://mcp.market/server/entreprisedaney33-rgb-x402-seller-mcp)