# x402 Toolbox (remote · lab.paidapis.net)

Free, read-only MCP subset of x402 Toolbox's cheap data endpoints, free via MCP.

- Trust score: 69/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `lab.paidapis.net`: 69/100 (this document), [markdown](https://verifymcp.io/servers/mayer-code-x402-toolbox/lab.md), [page](https://verifymcp.io/servers/mayer-code-x402-toolbox/lab)

## Channel facts

- Endpoint: `https://lab.paidapis.net/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-20.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 14 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 78/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 1089 tokens (~77/item across 14 items; 14 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 14 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 14 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the x402 Toolbox MCP server?

x402 Toolbox is a hosted endpoint at https://lab.paidapis.net/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http mayer-code-x402-toolbox 'https://lab.paidapis.net/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "mayer-code-x402-toolbox": {
      "url": "https://lab.paidapis.net/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "mayer-code-x402-toolbox": {
      "type": "http",
      "url": "https://lab.paidapis.net/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.mayer-code-x402-toolbox]
url = "https://lab.paidapis.net/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mayer-code-x402-toolbox": {
      "type": "remote",
      "url": "https://lab.paidapis.net/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add mayer-code-x402-toolbox --url 'https://lab.paidapis.net/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  mayer-code-x402-toolbox:
    url: "https://lab.paidapis.net/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "mayer-code-x402-toolbox": {
      "Transport": "http",
      "Url": "https://lab.paidapis.net/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add mayer-code-x402-toolbox -t streamable-http -u 'https://lab.paidapis.net/mcp'
```

### Other

```json
{
  "mcpServers": {
    "mayer-code-x402-toolbox": {
      "type": "http",
      "url": "https://lab.paidapis.net/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-20 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-18 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 67, +1)

No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-14 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-13 (score 65, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-09-12 (score 65)

First indexed and scored.

## MCP tools (14)

### `get_market_snapshot` (~69 tokens)

Aggregated market snapshot

Gas price + ETH/USD price + latest Base block in one call. Optional ?ref=<address> pays that wallet a referral cut. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/market-snapshot for production/agentic use.

### `get_normalized_gas` (~61 tokens)

Normalized Ethereum + Base gas data

Ethereum and Base gas price and block data, cleaned into one consistent schema per chain. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/normalized-gas for production/agentic use.

### `get_gas_comparator` (~72 tokens)

Cross-chain gas comparator

Real gas price on Ethereum vs Base side by side, with delta, ratio, and estimated USD cost of a standard transfer on each chain. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/gas-comparator for production/agentic use.

### `get_large_transfers` (~74 tokens)

Large USDC transfer filter

Recent USDC transfers on Base above a value threshold. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/large-usdc-transfers for production/agentic use.

Input parameters:

- `minUsd` (number): Minimum USD value to include (default 10000).

### `enrich_address` (~71 tokens)

On-chain address enrichment

Real on-chain context for a wallet address: contract vs EOA, native balance, transaction count. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/enrich-address for production/agentic use.

Input parameters:

- `address` (string, required): Address to look up.

### `get_gas_metrics` (~76 tokens)

Derived gas price metrics

Rolling average/min/max/volatility/trend for Ethereum gas price over a window. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/gas-metrics for production/agentic use.

Input parameters:

- `windowMinutes` (number): Window size in minutes (default 10).

### `get_reliable_eth_price` (~83 tokens)

Reliable ETH/USD price

ETH/USD price with retry-with-backoff and last-known-good cache fallback. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/reliable-eth-price for production/agentic use.

Input parameters:

- `simulateFailureRate` (number): 0-1, simulates upstream failures to demo the fallback path.

### `get_wiki_summary` (~67 tokens)

Wikipedia article summary as JSON

Wikipedia article lead section, converted from rendered HTML into clean, tag-free JSON. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/wiki-summary for production/agentic use.

Input parameters:

- `title` (string, required): Wikipedia article title.

### `verify_tx` (~77 tokens)

Signed on-chain transaction confirmation oracle

Checks whether a Base transaction hash has confirmed on-chain, returns a signed EIP-191 attestation. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/verify-tx for production/agentic use.

Input parameters:

- `txHash` (string, required): 32-byte transaction hash to check.

### `verify_tx_multi_source` (~84 tokens)

Multi-source on-chain confirmation oracle

Checks a Base tx hash against 3 independent RPC providers in parallel; only signs an attestation if all agree. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/verify-tx-multi-source for production/agentic use.

Input parameters:

- `txHash` (string, required): 32-byte transaction hash to check.

### `get_attestation_log` (~80 tokens)

Signed oracle attestation history

Persisted, doubly-signed log of past oracle attestations from this server. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/attestation-log for production/agentic use.

Input parameters:

- `limit` (integer): Max entries to return, 1-100 (default 20).

### `get_freshness_priced_data` (~88 tokens)

Freshness-tiered gas/price data

Same gas + ETH/USD data, priced by requested freshness: cached (cheap) or live (guaranteed current). Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/freshness-priced-data for production/agentic use.

Input parameters:

- `freshness` (string): Either "cached" (default) or "live".

### `get_gas_history_export` (~119 tokens)

Historical gas price export

Raw Ethereum gas price samples over a date range, JSON or CSV, priced by real row count (min $0.005, max 24h range). Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/gas-history-export for production/agentic use.

Input parameters:

- `format` (string): Either "json" (default) or "csv".
- `from` (string, required): ISO 8601 range start.
- `to` (string, required): ISO 8601 range end.

### `get_reputation` (~68 tokens)

On-chain + ledger reputation score

Trust score from real on-chain activity plus our own ledger of settled payments from this address. Free via MCP; the same data is also available pay-per-call at https://lab.paidapis.net/api/reputation for production/agentic use.

Input parameters:

- `address` (string, required): Address to score.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/mayer-code-x402-toolbox/lab#diagnostics

## Score history

- 2026-09-20: 69
- 2026-09-19: 68
- 2026-09-18: 68
- 2026-09-17: 67
- 2026-09-16: 67
- 2026-09-15: 66
- 2026-09-14: 66
- 2026-09-13: 65
- 2026-09-12: 65

## Common questions

### What is the x402 Toolbox MCP server?

x402 Toolbox is an MCP server listed in the public MCP registry as io.github.mayer-code/x402-toolbox. Free, read-only MCP subset of x402 Toolbox's cheap data endpoints, free via MCP. This page covers its hosted endpoint (https://lab.paidapis.net/mcp).

### Is the x402 Toolbox MCP server safe to use?

x402 Toolbox scores 69 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the x402 Toolbox MCP server expose?

x402 Toolbox exposes 14 tools: get_market_snapshot, get_normalized_gas, get_gas_comparator, get_large_transfers, enrich_address, and 9 more. Their descriptions and schemas cost roughly 1,089 tokens of context every time the server is loaded.

### Does the x402 Toolbox MCP server require authentication?

No. We connected to x402 Toolbox without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the x402 Toolbox MCP server still maintained?

x402 Toolbox is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://lab.paidapis.net/mcp
- Changelog RSS feed: https://verifymcp.io/servers/mayer-code-x402-toolbox/lab.xml
- Changelog JSON feed: https://verifymcp.io/servers/mayer-code-x402-toolbox/lab.json
- HTML version of this page: https://verifymcp.io/servers/mayer-code-x402-toolbox/lab