Is Tollbooth X402 safe and trustworthy?

tashan scores Tollbooth X402 on public evidence — tashan score 45.0/100, 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 Tollbooth X402?

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

Who maintains Tollbooth X402?

source: SolomonisBlack/tollbooth-x402.

‹ The Index

Tollbooth X402

npm

Free MCP server for x402toll.com — discover, preview, recommend, and self-verify 56 verified pay-per-call calculators (tax, crypto/DeFi, lending, real estate, retirement, investing, business) that AI agents pay for in USDC on Base via x402. Includes a neu

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

Category: Finance & Crypto — see all ranked ›

Work: Agent development

Who it is for: AI engineer

Install (Claude Code):

claude mcp add tollbooth-x402 -- npx -y tollbooth-x402

thin

“says what it does, not how to use it — 0 tool docs, 0 worked examples”

This grade is wrong ›

tashan score: 45.0
Instruction depth: 42.0 (thin — shallow — says what it does, not how to actually use it)
Adoption: 72/wk
Upkeep: 55.0
Freshness: 81.0
Evidence coverage: 100% of the inputs this score can use
Health: active
Settled payments: $2.55 across 20 x402 calls at its own payment address (Base, all time)
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 0.6.0 — 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

You searched for one. Check the rest of your stack:

npx tashan-cli doctor

Reads the config already on your machine and names what is dead, deprecated or running code at install time. No account, nothing uploaded.

tashan Pro$6/mo

Tollbooth X402 scores 45 today. Pro keeps the series, so you can see whether that is a project getting better or one on its way down.

Every score since we started measuring, for any capability
The named replacement when something you run is dying — not just that it is
tashan doctor over the config you already have, on your machine

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Show your score

Measured this well? Put the live badge in your README — it updates as the score does.

[![tashan](https://tashan.sh/badge/pkg-tollbooth-x402.svg)](https://tashan.sh/capability/pkg-tollbooth-x402.html)

npm ↗ · source ↗ · pkg:tollbooth-x402

Everything on this page is public evidence and free. What it cannot know is whether you run this — check your whole config, free, in the browser. tashan Pro adds the series behind each row and names a replacement for anything dying.

Already running this? Check your whole config — free, in your browser, nothing installed. Or npx tashan-cli doctor locally, which sends nothing at all.

Measured 2026-09-12 · scorer s5 · how · something wrong here?