norman-mcp-server
Norman Finance is an accounting and tax filing autopilot designed for entrepreneurs in Germany. The Norman Finance MCP server enables new ways of interacting with Norman Finance's accounting, tax, and invoicing services. Simplifying financial workflows by integrating Norman Finance API capabilities
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norman-finance
Source: mcp.so · also listed on modelscope
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Install from
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NORMAN_EMAILSet your credentials as environment variables (, NORMAN_PASSWORD) before starting the gateway.NORMAN_PASSWORDSet your credentials as environment variables (NORMAN_EMAIL, ) before starting the gateway.NORMAN_MCP_HOSTNORMAN_MCP_PORTNORMAN_MCP_PUBLIC_URLNORMAN_ENVIRONMENTNORMAN_API_TIMEOUTNORMAN_OAUTH_CLIENT_IDNORMAN_OAUTH_CLIENT_SECRETMCP_UPLOAD_MAX_AGEMCP_UPLOAD_MAX_SIZENORMAN_MCP_ALLOWED_REDIRECT_HOSTSSENTRY_DSNSENTRY_ENVIRONMENTSENTRY_RELEASETool annotations
67/104 tools have annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
37/104 tools missing one or more hints — get_corporate_tax_registration (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_corporate_tax_registration_choices (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_corporate_tax_registration (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +34 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Destructive tools are labelled
2 tools perform destructive updates without destructiveHint — upload_bulk_attachments deletes at line 293 (os.remove(temp_file)); create_attachment deletes at line 568 (os.remove(temp_file_path))
Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.
openWorldHint matches behaviour
2 tools claim openWorldHint=false but make outbound HTTP — get_attachment_preview → dynamic (line 746); get_einvoice_xml → dynamic (line 579)
Either flip openWorldHint to true (acknowledging external reach) or refactor the handler to avoid outbound HTTP. If the only network calls are to a known fixed endpoint that you consider part of the tool itself, document that and keep openWorldHint=false; otherwise true is honest.
Tool inputs are validated
87/104 tool handlers declare input schemas (84%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
Only 13/104 tool handlers wrap calls in try/catch (13%)
Wrap each tool handler body in try/catch and return a structured error response.
Tests exist
No test files found
Add tests that exercise each declared tool.
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