# karbon-mcp-server

Unofficial MCP server for Karbon practice management — connect Claude Code, Claude Desktop, Copilot, or any MCP client to your Karbon instance.

- **Type:** MCP server
- **Trust:** 85/100 (A), scored on the package rubric
- **Verification:** verified (build provenance)
- **Version:** 0.2.4
- **Author:** Appvisory
- **License:** MIT
- **npm:** karbon-mcp-server
- **Source:** https://github.com/Mad-Man-Dan/karbon-mcp-server
- **Compatible clients:** claude-code, cursor, copilot, gemini (basis: transport)

## Trust

85/100 (A), scored on the package rubric
- Publisher verified: no
- Build provenance: verified attestation
- npm trusted publishing (OIDC): yes
- Install scripts: nothing suspicious found
- Prompt-injection scan: not run
- Obfuscation scan: not run
- Evidence age: 13 days

## Security scan

- **Status:** clean
- **Scanned:** 2026-08-15T09:37:18.340Z
- **Version scanned:** 0.2.4
- **CVEs:** none found by OSV at scan time

## Tools

40 declared. Statically extracted from the shipped source — a floor on the surface, not a census.
- `get_business_card`
- `update_business_card`
- `list_client_groups`
- `get_client_group`
- `create_client_group`
- `update_client_group`
- `list_contacts`
- `get_contact`
- `create_contact`
- `update_contact`
- `list_custom_fields`
- `get_custom_field_values`
- `set_custom_field_values`
- `create_custom_field`
- `delete_custom_field`
- `list_entity_files`
- `download_file`
- `upload_file`
- `list_invoices`
- `get_invoice`
- `get_note`
- `get_comment`
- `create_note`
- `list_organizations`
- `get_organization`
- `create_organization`
- `update_organization`
- `list_payments`
- `get_payment`
- `create_manual_payment`
- `delete_manual_payment`
- `reverse_manual_payment`
- `list_teams`
- `get_team`
- `add_team_members`
- `remove_team_member`
- `get_tenant_settings`
- `list_work_templates`
- `get_work_template`
- `list_timesheets`

## Install

**Verdict: install** — No blocking findings and no open coverage gaps — safe to install as configured.
**Config** (claude-code):
```json
"{\n  \"mcpServers\": {\n    \"karbon-mcp-server\": {\n      \"command\": \"npx\",\n      \"args\": [\n        \"-y\",\n        \"karbon-mcp-server\"\n      ]\n    }\n  }\n}"
```

## Blast radius

Extensive to critical — no credential declaration found, from the publisher, the upstream registry, or the README. Known so far: deletes data; runs on your machine.
- Floor 39, ceiling 63 (tier: unknown)
- `unknown` means the floor and ceiling land in different bands — not measured enough to name one. It does not mean low.
- This is impact, not likelihood. A high radius is not a defect: a filesystem server is supposed to write files. It is never part of the trust score.

## Machine-readable views of this entry

- Signed JSON: https://forgeregistry.com/api/v1/packages/karbon-mcp-server
- Install plan: https://forgeregistry.com/api/v1/packages/karbon-mcp-server/install-plan
- Alternatives: https://forgeregistry.com/api/v1/alternatives/karbon-mcp-server
- HTML page: https://forgeregistry.com/registry/karbon-mcp-server
- MCP: POST https://forgeregistry.com/api/mcp → `forge_get_package` / `forge_install_plan`

## About this document

Generated by Forge (https://forgeregistry.com) — a compact rendering of the same record served, signed, at the JSON URL above. Trust and scan facts are the registry's own measurements; anything Forge did not measure is named as unmeasured rather than omitted.