AddressPenny MCP Server

An MCP server for AddressPenny address validation that enables users to validate postal addresses, bulk-clean address lists, and extract addresses from unstructured text through Claude Desktop, Cursor, and other MCP-compatible agents.

→ CanalWestStudio/addresspenny-mcp · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 2 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

🔐

You'll be asked for 1 credential: ADDRESSPENNY_API_KEY

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies2 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.0.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.0.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configADDRESSPENNY_ACCOUNT_ID— yes — Prefixed account ID (e.g. acct_abc123)

🔐 secretADDRESSPENNY_API_KEY— yes — API token from Addresspenny

configADDRESSPENNY_API_URL— no https://addresspenny.com/api/v1 Override for self-hosted or staging

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/canalweststudio-addresspenny-mcp-oz3o0c)](https://m8ven.ai/mcp/canalweststudio-addresspenny-mcp-oz3o0c)

commit: 08458556728fb613504053e838c908c1cc8c8b63

code hash: aabf58b650896fbbcde26aa7aefc0fd7d8122fc25b22806433dd4642a0969a5c

verified: 6/17/2026, 11:57:58 AM

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