MCP, MCP server
Mcp Lexoffice
An MCP server for Lexware Office, the German accounting service formerly called Lexoffice.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
SECRETS_PATH_DOTENV OBFUSCATION_FILE_OVER_READ_CAP
Why this grade
- SECRETS_PATH_DOTENV Low
Mentions a .env file.
mcp_lexoffice/client.py, line 44
"LEXOFFICE_API_KEY must be set (raw token injected via env or .env)" - OBFUSCATION_FILE_OVER_READ_CAP Note
A file was over the read cap and was not fully read.
uv.lock, line 1
version = 1
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Pass
No shell or command execution found, and no extra permission was declared.
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Pass
No network call found.
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_DOTENV
mcp_lexoffice/client.py, line 44
"LEXOFFICE_API_KEY must be set (raw token injected via env or .env)"
mcp_lexoffice/config.py, line 16
env_file=".env",
.dockerignore, line 7
*.egg-info/
Show more
.gitignore, line 5
*.egg-info/
README.md, line 22
cp .env.example .env # then fill in LEXOFFICE_API_KEY and MCP_API_KEY
README.md, line 38
`MCP_TRANSPORT` defaults to `stdio` when unset. The `.env.example` sets it to `streamable-http`, so with a copied `.env` the server starts in HTTP mode and needs `MCP_API_KEY`.
README.md, line 64
All configuration comes from environment variables or a `.env` file in the working directory.
openspec/changes/archive/2026-09-28-mvp-scaffold/design.md, line 13
- Replace 1Password CLI auth with `.env`-based bearer token
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
a file was over the read cap and was not fully read.
OBFUSCATION_FILE_OVER_READ_CAP
uv.lock, line 1
version = 1
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 38aebce80eb8. reads a credential or environment file. a file was over the read cap and was not fully read.
Date and source
Date checked:
github.com
Commit graded: 38aebce80eb8c54d32d8f512b3c4bb89a5345e88
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