Claude.ai's Add custom connector dialog auto-detects Authentication
"None" for a server that answers the handshake without credentials,
which is exactly what lazy auth does; a user who accepts that default
gets an error instead of the sign-in on the first company-scoped call.
State the two correct choices ("Required when the server asks", DCR
client registration) in the bridge README and the plugin's CONNECTORS.md.
Claude-Session: https://claude.ai/code/session_018wCdzRTatKiDByKB8hCNT6
Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
accounted-mcp
Connect Claude Desktop, Claude Code, or another stdio MCP client to your Accounted bookkeeping account.
This zero-dependency bridge forwards JSON-RPC over stdio to the hosted Accounted
MCP server. New connections receive the accounted_* tool namespace. Existing
gnubok-mcp configurations remain supported separately.
Setup
- Create an API key in Accounted under Settings > API.
- Add the bridge to your MCP client:
{
"mcpServers": {
"accounted": {
"command": "npx",
"args": ["-y", "accounted-mcp"],
"env": {
"ACCOUNTED_API_KEY": "gnubok_sk_test_...",
"ACCOUNTED_CLIENT": "claude-desktop"
}
}
}
}
The credential value retains the legacy gnubok_sk_* wire prefix for backward
compatibility. Only the MCP integration is being renamed in this release.
Environment variables
| Variable | Required | Default | Description |
|---|---|---|---|
ACCOUNTED_API_KEY |
yes | none | Your existing Accounted API key. |
ACCOUNTED_URL |
no | Accounted hosted MCP endpoint | Override for self-hosted Accounted. The bridge adds tool_namespace=accounted when omitted. |
ACCOUNTED_CLIENT |
no | none | Telemetry-only distribution marker such as claude-desktop. |
The API key scopes determine which tools are visible and callable. Write tools stage pending operations for explicit approval before anything is booked.
OAuth connector (no API key, no account needed up front)
Clients with OAuth support connect directly without this bridge and without an
existing API key. The sign-in screen lets a new user create the Accounted
account (BankID or e-mail), and company setup then continues in the
conversation through the onboarding skill and accounted_create_company:
https://app.accounted.se/api/extensions/ext/mcp-server/mcp?tool_namespace=accounted
# Claude Code
claude mcp add --transport http accounted \
"https://app.accounted.se/api/extensions/ext/mcp-server/mcp?tool_namespace=accounted"
# OpenAI Codex
codex mcp add accounted --url \
"https://app.accounted.se/api/extensions/ext/mcp-server/mcp?tool_namespace=accounted"
Claude.ai and Claude Desktop: Settings > Connectors > Add custom connector, paste the URL, then in step 2 choose:
- Authentication: "Required when the server asks." Claude auto-detects "None" because the server answers the handshake without credentials; with "None" the first company-scoped call shows an error instead of the sign-in.
- OAuth client: "No client ID, register one automatically" (DCR). The server does not advertise Anthropic's hosted client metadata (CIMD) yet.
- No additional headers; transport stays Streamable HTTP.
The connector works before you connect (documentation tools); the first company-scoped call opens the sign-in prompt, where a new user creates the account.
Compatibility
The legacy gnubok-mcp package, environment variables, endpoint behavior, and
gnubok_* tool aliases remain supported. Existing installations do not need to
change.