mcp-server-smallinvoice

MCP server for smallinvoice.ch — Swiss SME invoicing and accounting with 146 tools and OAuth2 BYOC authentication.

→ AIWerk/mcp-server-smallinvoice · listed on glama

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// key findings

🚨

Known vulnerabilities in dependencies: 1 critical, 3 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

🔐

You'll be asked for 3 credentials: SMALLINVOICE_ACCESS_TOKEN, SMALLINVOICE_CLIENT_SECRET, SMALLINVOICE_REFRESH_TOKEN

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

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configAIWERK_PDF_RETURN_BASE64

🔐 secretSMALLINVOICE_ACCESS_TOKEN— optional Pre-loaded access token; lazily refreshed if absent or expired

configSMALLINVOICE_API_TIMEOUT_MS— optional Request timeout in ms (default: 30000)

configSMALLINVOICE_CLIENT_ID— ✅ OAuth2 client ID — smallinvoice Home → Users → API V2 → New client

🔐 secretSMALLINVOICE_CLIENT_SECRET— ✅ OAuth2 client secret

configSMALLINVOICE_DRY_RUN— optional Set to 1 to prevent write operations from reaching the API

configSMALLINVOICE_NO_SNAPSHOT— optional Set to 1 to disable pre-write entity snapshots

🔐 secretSMALLINVOICE_REFRESH_TOKEN— ✅ Initial refresh token from the OAuth bootstrap flow (rotates per call)

configSMALLINVOICE_SNAPSHOT_DIR— optional Directory for pre-write snapshots (default: ~/.aiwerk/smallinvoice-snapshots)

configSMALLINVOICE_SNAPSHOT_FAIL_OPEN— optional Set to 1 to log a warning instead of blocking when a snapshot fails

configSMALLINVOICE_TOKEN_FILE— optional Path to persist rotating tokens (default: ~/.aiwerk/smallinvoice-tokens.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 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/aiwerk-mcp-server-smallinvoice-1sopv0)](https://m8ven.ai/mcp/aiwerk-mcp-server-smallinvoice-1sopv0)

commit: f912a21e385219041df5f6c66e7a91edd105343e

code hash: 4c41fbd73bc04c95bdc2f28f7e01663b17daef79fa4cf2440f72237d25b9c33e

verified: 6/16/2026, 1:18:17 PM

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