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FreshBooks MCP Server

An MCP server for the FreshBooks API that lets Claude read and manage invoices, clients, expenses, projects, services, payments, and time entries.

→ SGTCS26/freshbooks-mcp-server· listed on glama
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// key findings
🚨
Secret credentials may flow to a network call
1 flow detected: FRESHBOOKS_REFRESH_TOKEN. We can’t prove the destination matches the brand the credential belongs to.
⚠️
Known vulnerabilities in dependencies: 17 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 3 credentials: FRESHBOOKS_ACCESS_TOKEN, FRESHBOOKS_CLIENT_SECRET, FRESHBOOKS_REFRESH_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies17 high5 medium8 low

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

high@modelcontextprotocol/sdk@1.10.0GHSA-345p-7cg4-v4c7

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

high@modelcontextprotocol/sdk@1.10.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.10.0GHSA-w48q-cv73-mx4w

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

highaxios@1.7.0GHSA-35jp-ww65-95wh

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

highaxios@1.7.0GHSA-3g43-6gmg-66jw

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

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// required environment variables
This server reads these from process.env. You'll be asked to provide them before it can run.
🔐 secretFRESHBOOKS_ACCESS_TOKEN— For stdio A valid FreshBooks access token
configFRESHBOOKS_API_BASE— No Override the FreshBooks API base URL (default: https://api.freshbooks.com)
configFRESHBOOKS_CLIENT_ID— your_client_id
🔐 secretFRESHBOOKS_CLIENT_SECRET— your_client_secret
🔐 secretFRESHBOOKS_REFRESH_TOKEN— your_refresh_token
configFRESHBOOKS_TOKEN_PATH
configHTTPS— HTTP + SSE — for claude.ai custom connectors (requires a public URL)
configMODE— "": "stdio"
configPORT— defaults to 3000 when HTTPS=false, so no need to set it explicitly.
configSERVER_URL— For HTTP mode Public base URL. Defaults to https://localhost:3443
configSESSIONS_FILE— No Path for persisted sessions (default: ~/.freshbooks-mcp/sessions.json)
// 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 8 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/sgtcs26-freshbooks-mcp-server-khbu7r)](https://m8ven.ai/mcp/sgtcs26-freshbooks-mcp-server-khbu7r)
commit: dad8de0ab7dbf5b2c2a682163036f6de6019f784
code hash: 8589183e2484e599a4764a89a1c48177cf59deb056eaae3bba61c482832fc10d
verified: 7/31/2026, 9:02:18 AM
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