# 47620 Base + Polygon Data API (npm · 47620-evm-mcp)

Pay-per-call Base and Polygon onchain data over x402 for AI agents.

- Trust score: 70/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-25

## Components

- remote · `47620.xyz`: 64/100, [markdown](https://verifymcp.io/servers/xyz-47620-evm-data/mcp-evm.md), [page](https://verifymcp.io/servers/xyz-47620-evm-data/mcp-evm)
- npm · `47620-evm-mcp`: 70/100 (this document), [markdown](https://verifymcp.io/servers/xyz-47620-evm-data/47620-evm-mcp.md), [page](https://verifymcp.io/servers/xyz-47620-evm-data/47620-evm-mcp)

## Channel facts

- Registry: `npm`
- Package: `47620-evm-mcp`
- Version: `1.0.0`
- Transport: `stdio`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-25.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 39 of 122 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 1 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 79/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 924 tokens (~51/item across 18 items; 18 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 88/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 64% 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 18 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 18 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.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the 47620 Base + Polygon Data API MCP server?

47620 Base + Polygon Data API runs locally as an npm package, launched with npx -y 47620-evm-mcp. 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 xyz-47620-evm-data -- npx -y 47620-evm-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "xyz-47620-evm-data": {
      "command": "npx",
      "args": [
        "-y",
        "47620-evm-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "xyz-47620-evm-data": {
      "command": "npx",
      "args": [
        "-y",
        "47620-evm-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add xyz-47620-evm-data -- npx -y 47620-evm-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "xyz-47620-evm-data": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "47620-evm-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add xyz-47620-evm-data --command npx --arg -y --arg 47620-evm-mcp
```

### Hermes

```yaml
mcp_servers:
  xyz-47620-evm-data:
    command: "npx"
    args: ["-y", "47620-evm-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "xyz-47620-evm-data": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "47620-evm-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add xyz-47620-evm-data -t stdio -c npx -a -y 47620-evm-mcp
```

### Other

```json
{
  "mcpServers": {
    "xyz-47620-evm-data": {
      "command": "npx",
      "args": [
        "-y",
        "47620-evm-mcp"
      ]
    }
  }
}
```

## 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.

### 2026-09-25 (score 70, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 70, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-09-23 (score 55)

First indexed and scored.

## MCP tools (18)

### `base_health` (~51 tokens)

base network health: chain id, latest block, gas price and native token USD price. Pay-per-call ($0.002 USDC).

Input parameters:

- `fields` (string): Optional comma-separated subset of fields to return

### `base_block` (~64 tokens)

Header + summary for a base block by number (or "latest"): hash, timestamp, tx count, gas used, base fee. Pay-per-call ($0.005 USDC).

Input parameters:

- `fields` (string)
- `number` (string): Block number or "latest"

### `base_balance` (~48 tokens)

Native balance and live USD value for any base address. Pay-per-call ($0.005 USDC).

Input parameters:

- `address` (string, required): base address (0x...)
- `fields` (string)

### `base_stables` (~48 tokens)

USDC/USDT/DAI balances for a base address in one call. Pay-per-call ($0.01 USDC).

Input parameters:

- `address` (string, required): base address (0x...)

### `base_token` (~62 tokens)

Live price, liquidity, 24h volume and DEX pairs for any base ERC-20 token (plus onchain name/symbol/decimals). Pay-per-call ($0.02 USDC).

Input parameters:

- `token` (string, required): base ERC-20 token address

### `base_tx` (~44 tokens)

Status, block, gas and transfer summary for a base transaction hash. Pay-per-call ($0.01 USDC).

Input parameters:

- `hash` (string, required): Transaction hash (0x...)

### `base_contract` (~50 tokens)

Whether a base address is a contract, bytecode size, and ERC-20 metadata if applicable. Pay-per-call ($0.01 USDC).

Input parameters:

- `address` (string, required): base address (0x...)

### `base_gas` (~47 tokens)

Current base gas price (gwei + wei) and estimated cost of a 21k native transfer. Pay-per-call ($0.005 USDC).

Input parameters:

- `fields` (string)

### `base_trending` (~48 tokens)

Trending base DEX pairs by 24h volume (DexScreener boosts). Fresh feed for agents. Pay-per-call ($0.02 USDC).

Input parameters:

- `fields` (string)

### `polygon_health` (~51 tokens)

polygon network health: chain id, latest block, gas price and native token USD price. Pay-per-call ($0.002 USDC).

Input parameters:

- `fields` (string): Optional comma-separated subset of fields to return

### `polygon_block` (~64 tokens)

Header + summary for a polygon block by number (or "latest"): hash, timestamp, tx count, gas used, base fee. Pay-per-call ($0.005 USDC).

Input parameters:

- `fields` (string)
- `number` (string): Block number or "latest"

### `polygon_balance` (~48 tokens)

Native balance and live USD value for any polygon address. Pay-per-call ($0.005 USDC).

Input parameters:

- `address` (string, required): polygon address (0x...)
- `fields` (string)

### `polygon_stables` (~48 tokens)

USDC/USDT/DAI balances for a polygon address in one call. Pay-per-call ($0.01 USDC).

Input parameters:

- `address` (string, required): polygon address (0x...)

### `polygon_token` (~62 tokens)

Live price, liquidity, 24h volume and DEX pairs for any polygon ERC-20 token (plus onchain name/symbol/decimals). Pay-per-call ($0.02 USDC).

Input parameters:

- `token` (string, required): polygon ERC-20 token address

### `polygon_tx` (~44 tokens)

Status, block, gas and transfer summary for a polygon transaction hash. Pay-per-call ($0.01 USDC).

Input parameters:

- `hash` (string, required): Transaction hash (0x...)

### `polygon_contract` (~50 tokens)

Whether a polygon address is a contract, bytecode size, and ERC-20 metadata if applicable. Pay-per-call ($0.01 USDC).

Input parameters:

- `address` (string, required): polygon address (0x...)

### `polygon_gas` (~47 tokens)

Current polygon gas price (gwei + wei) and estimated cost of a 21k native transfer. Pay-per-call ($0.005 USDC).

Input parameters:

- `fields` (string)

### `polygon_trending` (~48 tokens)

Trending polygon DEX pairs by 24h volume (DexScreener boosts). Fresh feed for agents. Pay-per-call ($0.02 USDC).

Input parameters:

- `fields` (string)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/xyz-47620-evm-data/47620-evm-mcp#diagnostics

## Score history

- 2026-09-25: 70
- 2026-09-24: 70
- 2026-09-23: 55

## Common questions

### What is the 47620 Base + Polygon Data API MCP server?

47620 Base + Polygon Data API is an MCP server listed in the public MCP registry as xyz.47620/evm-data. Pay-per-call Base and Polygon onchain data over x402 for AI agents. This page covers its npm package (47620-evm-mcp).

### Is the 47620 Base + Polygon Data API MCP server safe to use?

47620 Base + Polygon Data API scores 70 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 25 September 2026. It declares no install or post-install scripts. 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 47620 Base + Polygon Data API MCP server expose?

47620 Base + Polygon Data API exposes 18 tools: base_health, base_block, base_balance, base_stables, base_token, and 13 more. Their descriptions and schemas cost roughly 924 tokens of context every time the server is loaded.

### Is the 47620 Base + Polygon Data API MCP server still maintained?

47620 Base + Polygon Data API is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the 47620 Base + Polygon Data API MCP server under?

47620 Base + Polygon Data API declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/47620-evm-mcp
- Socket report: https://socket.dev/npm/package/47620-evm-mcp
- Repository: https://github.com/fito311/evm-data-mcp
- Changelog RSS feed: https://verifymcp.io/servers/xyz-47620-evm-data/47620-evm-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/xyz-47620-evm-data/47620-evm-mcp.json
- HTML version of this page: https://verifymcp.io/servers/xyz-47620-evm-data/47620-evm-mcp