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Firefly III MCP Server

Integrates with Firefly III personal finance software to enable natural language management of transactions, accounts, budgets, and categories. Supports recording expenses, checking balances, and organizing financial data through conversational AI.

→ przbadu/firefly-iii-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.
✅
23 tools verified — handlers match their declared behaviour
8 read-only tools verified — handlers contain no write/delete/exec
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
// 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@1.6.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.6.1GHSA-w48q-cv73-mx4w

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

highaxios@1.7.9GHSA-35jp-ww65-95wh

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

highaxios@1.7.9GHSA-3g43-6gmg-66jw

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

highaxios@1.7.9GHSA-43fc-jf86-j433

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

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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.
configFIREFLY_III_PAT— "": "your-personal-access-token-here"
configFIREFLY_III_URL— "": "https://your-firefly-instance.example.com",
// 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 4 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/przbadu-firefly-iii-mcp-server-1e0ylu)](https://m8ven.ai/mcp/przbadu-firefly-iii-mcp-server-1e0ylu)
commit: 32fb7ff643e97daf2358183d547526732708d11b
code hash: ccbe631f07482ea8340387085d3c5bcf604de5173060a076f4501a81e3dcfd8f
verified: 6/12/2026, 11:05:29 AM
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