Is X402 Pay safe and trustworthy?

tashan scores X402 Pay on public evidence — tashan score 49.0/100, it is currently active, note: a single primary maintainer (bus-factor risk), no known advisories against the current release. Audit scope: OSV advisories, install-time scripts, build provenance and declared permission surface. We do not review source code or execute the capability.

How do I install X402 Pay?

In Claude Code: run `claude mcp add x402-pay -- npx -y @cryptoapis-io/mcp-x402-pay`. In Cursor / Claude Desktop, add it to mcp.json / claude_desktop_config.json.

Who maintains X402 Pay?

source: CryptoAPIs-io/cryptoapis-mcp-x402-pay.

‹ The Index

X402 Pay

npm

MCP server that pays x402-gated HTTP endpoints — fetch, and on a 402 authorize, sign, retry

Works with: Claude Code, Cursor, Claude Desktop, Codex CLI, Gemini CLI, Cline, Windsurf, VS Code (installable)
installable: each client documents how to load an MCP server of this type — that is the client's promise, not a claim verified against this capability

Install (Claude Code):

claude mcp add x402-pay -- npx -y @cryptoapis-io/mcp-x402-pay

deep

“Both tools get input tables; warns the private key may be logged by MCP clients.”

This grade is wrong ›

tashan score: 49.0
Instruction depth: 84.0 (deep — documents every tool, with worked examples, setup and a stated limitation)
Adoption: 125/wk
Upkeep: 57.0
Freshness: 85.0
Evidence coverage: 100% of the inputs this score can use
Health: active
License: MIT

Security audit

Every finding is shown in full — which advisory, the version that fixes it, and the exact command run at install time. Nothing in this audit is behind a licence.

No known advisoriesclearchecked against OSV for 0.5.0 — this package, not its dependency tree

No access inferred from declared dependenciesnothing it depends on reaches files, shell or network. This reads declarations only — built-in APIs are invisible to it, so absence of a declaration is not absence of access

No build provenanceno attestation — the published artifact cannot be traced to its source

What changed recently

2026-08-21 the tashan score for mcp-x402-pay fell to 52.0, from 60.0 Upkeep, freshness or adoption moved enough to change how this measures.
2026-09-13 mcp-x402-pay published 0.5.0, was 0.4.0 A new release is available.

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We recorded 2 changes to X402 Pay in the last 45 days. Pro tells you on the day — for the servers in your own config, not the ones you thought to look up.

The whole series behind any row, back to the first day we measured it
The replacement, named — not just the news that something died
tashan doctor over your own config, on your own machine

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npm ↗ · source ↗ · pkg:@cryptoapis-io/mcp-x402-pay

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Measured 2026-09-13 · scorer s5 · how · something wrong here?