io.github.SolomonisBlack/tollbooth-x402
NPM · TOLLBOOTH-X402 · SCANNED AUG 3
Discover, quote, verify & self-check 56 x402 pay-per-call finance/tax calculators for AI agents.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →
Supply Chain Security87
- No malware found by supply-chain analysis.Pass
- Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.Partial
- No install/post-install scripts declared.Pass
- Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 15 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability71
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1072 tokens (~107/item across 10 items; 10 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
- Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
npm · tollbooth-x402
claude mcp add solomonisblack-tollbooth-x402 -- npx -y tollbooth-x402
codex mcp add solomonisblack-tollbooth-x402 -- npx -y tollbooth-x402
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"solomonisblack-tollbooth-x402": {
"type": "local",
"command": [
"npx",
"-y",
"tollbooth-x402"
],
"enabled": true
}
}
} openclaw mcp add solomonisblack-tollbooth-x402 --command npx --arg -y --arg tollbooth-x402
mcp_servers:
solomonisblack-tollbooth-x402:
command: "npx"
args: ["-y", "tollbooth-x402"] {
"mcpServers": {
"solomonisblack-tollbooth-x402": {
"command": "npx",
"args": [
"-y",
"tollbooth-x402"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 2 Aug 26 +47
- Provenance: unverified → fail ▼ security
- Install scripts: unverified → pass ▲ security
- Known CVEs: unverified → partial ▲ security
- Malware scan: unverified → pass ▲ security
- Security disclosure: fail → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- License: unverified → pass ▲ functional
- Dependency health: unverified → partial ▲ functional
- Maintenance: unverified → pass ▲ functional
- MCP protocol: unverified → pass ▲ functional
- Stability: unverified → 0.23 ▲ functional
- Schema quality: unverified → good ▲ functional
- Licence: MIT functional
- 1 Aug 26 +16
- Tool coverage: unverified → 100 ▲ functional
- 31 Jul 26 −23
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 30 Jul 26 −18
- Malware scan: pass → unverified ▼ security
- 27 Jul 26 46
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 3 Aug 2026 · Analysed npm/[email protected]
Provenance none
Ecosystem: npm · Outcome: none
Dependencies 95 packages
95 packages in the resolved dependency tree · 95 deprecated · 29 stale.
The dependency tree was only partially resolved, so these counts may be incomplete.
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.
tollbooth_catalog ~61
List every Tollbooth paid endpoint at x402toll.com — verified calculators for tax, crypto/DeFi, lending, real estate, retirement, and business — with x402 prices, input schemas, methods, and golden-vector evidence. Free.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
tollbooth_golden ~90
Free verifiability check: returns a tool's published golden vector — for most tools, machine-checkable {sampleInputs, expectedResult, expectedResponseHash}. POST the sampleInputs to the paid endpoint and confirm the result + hash match to verify our math without trusting us.
| Name | Type | Req | Description |
|---|---|---|---|
| tool | string | yes | The tool id, e.g. "social-security" (see tollbooth_catalog) |
No output schema declared.
No examples provided.
tollbooth_gvp_check ~160
Neutral Golden-Vector Provenance check for ANY service's answer (not just Tollbooth's). Pass a GVP response object plus the inputs it was computed from; this recomputes the response's OWN sha256 over {endpoint, inputs, result, method, dataVintage} and reports whether it is self-consistent and GVP-1 complete (formula trace + data vintage + reproducible hash), with a "self-consistent · reproducible" badge (NOT an endorsement). Proves reproducibility, not that the underlying data source is authoritative. Free.
| Name | Type | Req | Description |
|---|---|---|---|
| inputs | object | yes | the inputs that answer was computed from |
| response | object | yes | the GVP answer object to check (must include its provenance block) |
No output schema declared.
No examples provided.
tollbooth_how_to_pay ~51
How an agent pays a Tollbooth endpoint with x402 (v2) on Base: the 402 flow, the PAYMENT-SIGNATURE header, and client library pointers. Free.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
tollbooth_preview ~106
Free coarse preview of a Tollbooth tool (rounded headline figure only; the paid endpoint returns the full verified breakdown). Previewable tools include paycheck, self-employment-tax, capital-gains-tax, mortgage-affordability, llc-cost, debt-plan, impermanent-loss.
| Name | Type | Req | Description |
|---|---|---|---|
| inputs | object | yes | Tool inputs per the catalog inputSchema |
| tool | string | yes | The tool id, e.g. "paycheck" (see tollbooth_catalog for ids) |
No output schema declared.
No examples provided.
tollbooth_quote ~196
See the exact price AND the response shape BEFORE you pay. Give a tool id (e.g. "paycheck", see tollbooth_catalog) or a full paid path ("/v1/paycheck") and this decodes the endpoint's HTTP 402 x402 challenge — returning the amount in USDC atomic units + USD, asset, network, payTo, timeout, the resource URL, and (when discoverable) example input + paid-response shape. Nothing is spent. Call this first so you know the price and output structure before committing to pay. Free.
| Name | Type | Req | Description |
|---|---|---|---|
| inputs | object | — | Optional inputs to probe with (defaults to {}); the price is per-call and does not depend on them |
| tool | string | yes | The tool id, e.g. "paycheck" (see tollbooth_catalog for ids), OR a full paid path starting with "/", e.g. "/v1/paycheck" |
No output schema declared.
No examples provided.
tollbooth_recommend ~74
Given a plain-English need (e.g. "how much tax on my bonus", "required minimum distribution"), returns the Tollbooth tools most likely to answer it, ranked, with their x402 prices and URLs. Free.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | What you are trying to calculate, in plain English |
No output schema declared.
No examples provided.
tollbooth_spec ~42
The open provenance standard Tollbooth implements and authors — the rules a verified-computation service follows so agents can trust and re-derive its answers. Free.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
tollbooth_verify ~213
Confirm or deny a claimed answer — from ANY source (another model, a spreadsheet, a competitor) — against Tollbooth's verified engine, for free. It returns ONLY whether the claim matches and which field NAMES were wrong; it NEVER reveals the correct value, so you can check a number you got elsewhere without getting the answer for free. Pass the same inputs the answer was computed from plus the claimed answer (an object of {field: value}, or a scalar with `field` set). Use tollbooth_catalog for tool ids and input shapes.
| Name | Type | Req | Description |
|---|---|---|---|
| claim | — | — | the claimed answer to check — an object of {field: value} pairs, or a scalar when `field` is given |
| field | string | — | check a single field of the result |
| inputs | object | yes | the inputs the answer was computed from |
| tolerance | number | — | numeric match tolerance (default 0.01) |
| tool | string | yes | tool id, e.g. "paycheck" |
No output schema declared.
No examples provided.
tollbooth_verify_hash ~79
Free provenance check: re-derives the SHA-256 response hash of a previous Tollbooth paid response from its inputs and reports whether it matches (detects tampering).
| Name | Type | Req | Description |
|---|---|---|---|
| inputs | object | yes | The exact inputs sent with that call |
| response | object | yes | The full JSON response from a paid Tollbooth call |
No output schema declared.
No examples provided.