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Calendly MCP Server

A Model Context Protocol (MCP) server for the Calendly API. Manage events, invitees, and schedule meetings directly via AI assistants.

→ 84emllc/calendly-mcp-server· listed on glama
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// key findings
⚠️
Known vulnerabilities in dependencies: 16 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 4 credentials: CALENDLY_ACCESS_TOKEN, CALENDLY_API_KEY, CALENDLY_CLIENT_SECRET, CALENDLY_REFRESH_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies16 high12 low

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

high@modelcontextprotocol/sdk@0.5.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@0.5.0GHSA-w48q-cv73-mx4w

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

highaxios@1.6.0GHSA-35jp-ww65-95wh

axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`

highaxios@1.6.0GHSA-3g43-6gmg-66jw

axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge

highaxios@1.6.0GHSA-43fc-jf86-j433

Axios is Vulnerable to Denial of Service via __proto__ Key in mergeConfig

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.
🔐 secretCALENDLY_ACCESS_TOKEN— No OAuth access token (if already obtained)
🔐 secretCALENDLY_API_KEY— "": "your_personal_access_token_here"
configCALENDLY_CLIENT_ID— Yes OAuth 2.0 client ID (alternative to PAT)
🔐 secretCALENDLY_CLIENT_SECRET— Yes OAuth 2.0 client secret
configCALENDLY_ORGANIZATION_URI— No Organization URI for automatic defaults
🔐 secretCALENDLY_REFRESH_TOKEN— No OAuth refresh token
configCALENDLY_USER_URI— No User URI for automatic defaults
// 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 2 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/84emllc-calendly-mcp-server-12d1rx)](https://m8ven.ai/mcp/84emllc-calendly-mcp-server-12d1rx)
commit: 6c8b9a507f73140edbc584e06a85a8f82d1195a4
code hash: cfd9ebda74ac9b257d295b51485caadbacaaac45504478183747365cc87160cd
verified: 6/22/2026, 12:19:12 PM
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