SumoSign MCP Server

Item: SumoSign MCP Server
Rating: 60
Author: M8ven

Exposes the SumoSign signing API to AI agents, allowing document upload, envelope creation, and tracking, with signing always done by human recipients.

→ meteordefect/sumosign-mcp · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 3 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: SUMOSIGN_API_KEY

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

// known CVEs in dependencies3 high

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

high@modelcontextprotocol/sdk@1.12.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.0GHSA-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.

🔐 secretSUMOSIGN_API_KEY— ss_live_... npx @sumosign/mcp

configSUMOSIGN_API_URL— no https://api.sumosign.app Override for self-hosted or staging APIs.

// 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/meteordefect-sumosign-mcp-1c84q3)](https://m8ven.ai/mcp/meteordefect-sumosign-mcp-1c84q3)

commit: 611127abc11c90a0b9347e3eb195552637aa43c6

code hash: d4d1811c48654ba9ddcf1e51664cd109a1bb04186cd73a26df33bf79a662d095

verified: 7/18/2026, 8:09:32 AM

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