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1 month ago
glama

PostGrid MCP Server

Enables sending letters and MICR-encoded checks, managing contacts and templates, and verifying US/Canadian addresses via the PostGrid Print & Mail and Address Verification APIs from Claude.

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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.
🔐
You'll be asked for 2 credentials: MCP_API_KEY, R2_SECRET_ACCESS_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@1.6.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.6.0GHSA-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.
🔐 secretMCP_API_KEY
configMCP_TRANSPORT
configPORT
configPOSTGRID_CONFIRM_LIVE_MODE— Live mode gate — Live API keys require =true in the environment. Without it, the server refuses to start with live keys.
configR2_ACCESS_KEY_ID— your_r2_access_key
configR2_BUCKET— postgrid-pdfs
configR2_ENDPOINT— "": "https://<account_id>.r2.cloudflarestorage.com",
🔐 secretR2_SECRET_ACCESS_KEY— your_r2_secret_key
// 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 3 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/natejonesbaby-postgrid-mcp-server-6c9ow7)](https://m8ven.ai/mcp/natejonesbaby-postgrid-mcp-server-6c9ow7)
commit: 0038bfe4f9966a999b26053a60d95aa00924428d
code hash: 9d1978dfd5ced51e2ea8576969e243453f7323cf31664b2c8dd3b959402a08d7
verified: 6/21/2026, 10:21:32 AM
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