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Northdata MCP

by p-meierversion 0.1.1i★ 4 (Stars for the whole repo)iRuns on your computer
Registry nameio.github.p-meier/northdata-mcp

How to install

What it does

NorthData API for German company, owner, and financial data — with a built-in credit guard.

  • Connects Runs on your computer
  • Account or key Needs NORTHDATA_API_KEY
  • Category Accounting, finance & tax

Install

Pick the AI app you use, then copy the settings.

Passed 1/3 checks · Runs on your computer · ✓ Commands checked Nov 14, 2026

First: which AI do you use?

Pick your app and the steps appear below.

Works with Claude, with some setup first

You need a Northdata MCP key (create it on the maker’s site) · Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Let AI install it

Copy this message into a Claude chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Northdata MCP for Claude on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "northdata": { "command": "uvx", "args": [ "northdata-mcp" ], "env": { "NORTHDATA_API_KEY": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For NORTHDATA_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Northdata MCP tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install uv (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    uv --version
    • A version number such as uv … = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required

    Open the uv download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: uv --version

    Install once; it works for everything that needs uv

  2. Sign up and create a Northdata MCP key

    Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.

    How to get a key is in the maker’s README below

  3. Open the Claude desktop app’s settings file

    SettingsDeveloperEdit Config

  4. Paste these settings and save the file

    {
  "mcpServers": {
    "northdata": {
      "command": "uvx",
      "args": [
        "northdata-mcp"
      ],
      "env": {
        "NORTHDATA_API_KEY": "your-value"
      }
    }
  }
}

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Quit Claude and open it again

  6. Try it

    Use Northdata MCP and tell me what you can do for me, then show me one thing

    ✓ If Claude says it is using Northdata MCP or shows a Northdata MCP tool in the answer, you are connected

3 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

  • NORTHDATA_APPROVAL_THRESHOLD Power-search 'limit' above this requires approve_high_cost=true. Default: 25.
  • NORTHDATA_ABSOLUTE_MAX Hard ceiling for power-search 'limit'. Default: 100. Flag-immune.
  • NORTHDATA_CREDIT_LOG Path to the local credit log file. Default: ~/.northdata/credits.jsonl

Descriptions are as written by the maker.

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Northdata MCP yet

Northdata MCP runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Northdata MCP

  • You need a Northdata MCP key (create it on the maker’s site) · Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
  • You need a Northdata MCP key (create it on the maker’s site) · Install Python (uv) on your computer first (one time)
  • You need a Northdata MCP key (create it on the maker’s site) · Install Python (uv) on your computer first (one time)
  • You need a Northdata MCP key (create it on the maker’s site) · Install Python (uv) on your computer first (one time)

B · Others in Accounting, finance & tax that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Works with Claude Code, with some setup first

You need a Northdata MCP key (create it on the maker’s site) · Install Python (uv) on your computer first (one time)

Let AI install it

Copy this message into a Claude Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Northdata MCP for Claude Code on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): claude mcp add --scope user northdata --env NORTHDATA_API_KEY=your-value -- uvx northdata-mcp 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For NORTHDATA_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Northdata MCP tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install uv (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    uv --version
    • A version number such as uv … = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required

    Open the uv download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: uv --version

    Install once; it works for everything that needs uv

  2. Sign up and create a Northdata MCP key

    Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.

    How to get a key is in the maker’s README below

  3. Open Terminal

    Mac: press Command+Space and type Terminal · Windows: open PowerShell

  4. Paste this command and press Enter

    claude mcp add --scope user northdata --env NORTHDATA_API_KEY=your-value -- uvx northdata-mcp

    Replace “your-value” with your key before pressing Enter

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Type /mcp in Claude Code

    You should see Northdata MCP listed as connected

  6. Try it

    Use Northdata MCP and tell me what you can do for me, then show me one thing

    ✓ If Claude Code says it is using Northdata MCP or shows a Northdata MCP tool in the answer, you are connected

3 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

  • NORTHDATA_APPROVAL_THRESHOLD Power-search 'limit' above this requires approve_high_cost=true. Default: 25.
  • NORTHDATA_ABSOLUTE_MAX Hard ceiling for power-search 'limit'. Default: 100. Flag-immune.
  • NORTHDATA_CREDIT_LOG Path to the local credit log file. Default: ~/.northdata/credits.jsonl

Descriptions are as written by the maker.

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

You need a Northdata MCP key (create it on the maker’s site) · Install Python (uv) on your computer first (one time)

Let AI install it

Copy this message into a Cursor chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Northdata MCP for Cursor on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "northdata": { "command": "uvx", "args": [ "northdata-mcp" ], "env": { "NORTHDATA_API_KEY": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For NORTHDATA_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Northdata MCP tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install uv (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    uv --version
    • A version number such as uv … = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required

    Open the uv download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: uv --version

    Install once; it works for everything that needs uv

  2. Sign up and create a Northdata MCP key

    Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.

    How to get a key is in the maker’s README below

  3. Click this button to open Cursor

    Open in Cursor

    Cursor asks you to confirm; click Install

  4. Fill in your key

    In the Northdata MCP settings, NORTHDATA_API_KEY is empty; add your key and save

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Open the AI chat in Cursor in Agent mode

  6. Try it

    Use Northdata MCP and tell me what you can do for me, then show me one thing

    ✓ If Cursor says it is using Northdata MCP or shows a Northdata MCP tool in the answer, you are connected

3 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

  • NORTHDATA_APPROVAL_THRESHOLD Power-search 'limit' above this requires approve_high_cost=true. Default: 25.
  • NORTHDATA_ABSOLUTE_MAX Hard ceiling for power-search 'limit'. Default: 100. Flag-immune.
  • NORTHDATA_CREDIT_LOG Path to the local credit log file. Default: ~/.northdata/credits.jsonl

Descriptions are as written by the maker.

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

You need a Northdata MCP key (create it on the maker’s site) · Install Python (uv) on your computer first (one time)

Let AI install it

Copy this message into a VS Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server Northdata MCP for VS Code on this computer, in this order: 1) Check uv with uv --version. If it is missing, tell me to install it from https://docs.astral.sh/uv/getting-started/installation/; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "servers": { "northdata": { "type": "stdio", "command": "uvx", "args": [ "northdata-mcp" ], "env": { "NORTHDATA_API_KEY": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For NORTHDATA_API_KEY, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Northdata MCP tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

  1. Install uv (if you don’t have it)

    Already installed? Check first · Open Terminal, type this command and press Enter

    uv --version
    • A version number such as uv … = installed, skip this step
    • "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
    How to open Terminal

    Mac: press ⌘ + Space, type Terminal, press Enter

    Windows: open Start, type Windows PowerShell, then Open

    Not installed: uv has no click-through installer. Copy the one-line command for your system (macOS or Windows) from uv’s official page into Terminal · no separate Python install needed; uv downloads it when required

    Open the uv download page ↗

    When it’s done, close Terminal, open it again and run the same command. You should see a version number: uv --version

    Install once; it works for everything that needs uv

  2. Sign up and create a Northdata MCP key

    Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.

    How to get a key is in the maker’s README below

  3. Click this button to open VS Code

    Open in VS Code

    VS Code asks you to confirm; click Install

  4. Fill in your key

    In the Northdata MCP settings, NORTHDATA_API_KEY is empty; add your key and save

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Open the AI chat in VS Code in Agent mode

  6. Try it

    Use Northdata MCP and tell me what you can do for me, then show me one thing

    ✓ If VS Code says it is using Northdata MCP or shows a Northdata MCP tool in the answer, you are connected

3 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

  • NORTHDATA_APPROVAL_THRESHOLD Power-search 'limit' above this requires approve_high_cost=true. Default: 25.
  • NORTHDATA_ABSOLUTE_MAX Hard ceiling for power-search 'limit'. Default: 100. Flag-immune.
  • NORTHDATA_CREDIT_LOG Path to the local credit log file. Default: ~/.northdata/credits.jsonl

Descriptions are as written by the maker.

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Northdata MCP💬 Discussion →
For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user northdata --env NORTHDATA_API_KEY=your-value -- uvx northdata-mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "northdata": {
      "command": "uvx",
      "args": [
        "northdata-mcp"
      ],
      "env": {
        "NORTHDATA_API_KEY": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "northdata": {
      "command": "uvx",
      "args": [
        "northdata-mcp"
      ],
      "env": {
        "NORTHDATA_API_KEY": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "northdata": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "northdata-mcp"
      ],
      "env": {
        "NORTHDATA_API_KEY": "your-value"
      }
    }
  }
}

Values you fill in

  • NORTHDATA_API_KEY secret required env
    Your NorthData API key. Obtain one at https://www.northdata.com
  • NORTHDATA_APPROVAL_THRESHOLD env
    Power-search 'limit' above this requires approve_high_cost=true. Default: 25.
  • NORTHDATA_ABSOLUTE_MAX env
    Hard ceiling for power-search 'limit'. Default: 100. Flag-immune.
  • NORTHDATA_CREDIT_LOG env
    Path to the local credit log file. Default: ~/.northdata/credits.jsonl

Descriptions are as written by the maker.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub starsi
4 (Stars for the whole repo)
This repo holds several MCP listings; its stars count once in rankings
Downloads per weeki
20/wk
Licencei
No licence stated
Connection
Runs on your computer
Latest versioni
0.1.1
Published to registryi
Apr 18, 2026
Code last changedi
Apr 18, 2026
Maker
p-meier
Packages
pypi: northdata-mcp
Registry status
Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatRaycast

All apps, with pros and cons →

Related guides

Guide 85 checks before you install an MCPAbout 2 minutes each: check its page on our site and the permission request in your AI app before you say yes.4 min read

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 15, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account p-meier, which owns the repo

  • ! Caution

    Still maintained

    Code last changed 7 months ago, more than 6 months ago

  • ✕ Fail

    Has a licence

    No licence file found in the repo

  • – Not applicable

    Endpoint responds

    This one runs on your computer; there is no internet endpoint

  • – Not applicable

    Sign-in with OAuth

    Runs on your computer and uses local settings instead

  • … Not checked yet

    No hidden instructions in tool descriptions

    Runs on your computer; we can only read tool lists from internet endpoints

Published vulnerabilities (OSV.dev)

Not checked yet

What we check → · JSON

Makers: ask for a re-check or report wrong info

Sign in

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

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User reviews

No reviews yet

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Compared with others in Accounting, finance & taxi

  • More stars than 87% of the other 3262 servers in this category
  • Published to the registry more recently than 4% of the other 3262 servers in this category
  • Basic checks equal to or better than 8% of the other 3262 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Northdata MCP safe?

It passed 1 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: NORTHDATA_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed 7 months ago, and the latest version (0.1.1) reached the registry 7 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: SolidInvoice, Signal8, Journalit, Tapetide - Indian Stock Market MCP, Twelve Data

Similar alternatives

Same category, other makers, commands already checked. Official ones first, then by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

SolidInvoice

Create and send invoices and quotes, manage clients, and track payments in SolidInvoice.

by SolidInvoiceGrowing★ 988Updated 6 days ago

Runs in the cloud✓ service owner · solidinvoice.co
How to connect

Signal8

SEC filings, dilution, insider & institutional ownership, and political-trade data for AI agents.

by signal8aiGrowing↓ 431/wk★ 425Updated 6 days ago

Computer or cloud✓ service owner · signal8.ai
Install

Journalit

Trading journal in Obsidian. Ask Claude or ChatGPT about your trades; edits are previewed first.

by CursivezGrowing★ 258Updated 7 days ago

Runs in the cloud✓ service owner · journalit.co
How to connect

Tapetide - Indian Stock Market MCP

48 tools for ~8,000 NSE & BSE stocks: quotes, screener, financials, filings, FII/DII, options

by Tapetide-hqGrowing↓ 139/wk★ 150Updated 18 days ago

Computer or cloud✓ service owner · tapetide.com
Install

Twelve Data

Real-time and historical market data: stocks, forex, crypto, ETFs, fundamentals and 60+ indicators.

by twelvedataGrowing★ 86Updated 11 days ago

Runs in the cloud✓ service owner · twelvedata.com
How to connect

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

NorthData MCP Server

Connect the NorthData company-data API to Claude Desktop, Claude Code, Cursor, and other AI assistants.

The Model Context Protocol (MCP) standardizes how Large Language Models (LLMs) talk to external services like NorthData. This server exposes NorthData's suggest, search, company, person, publications, reference, and billing endpoints as MCP tools, with a built-in credit guard that prevents accidental high-cost calls. See the full list of tools.

Built on [FastMCP v3](https://gofastmcp.com). Uses stdio transport — the MCP client launches northdata-mcp as a subprocess.

Setup

1. Read the security notes

Before running the server, skim the security considerations. NorthData costs real money per returned company, and MCP lets LLMs spend those credits autonomously. The credit guard mitigates this, but defence in depth matters.

2. Install the server
pipx install northdata-mcp

This pulls in the sibling northdata-cli package automatically and exposes the northdata-mcp console script globally.

Alternative via uv:

uvx northdata-mcp --help
3. Get a NorthData API key

Obtain a key at https://www.northdata.com. You'll put it into the MCP client config in the next step.

Optional credit-guard overrides (set as env vars in the MCP client config):

Env varDefaultPurpose
NORTHDATA_APPROVAL_THRESHOLD25search limit above this requires approve_high_cost=true
NORTHDATA_ABSOLUTE_MAX100Hard cap on search limit, flag-immune
NORTHDATA_CREDIT_LOG~/.northdata/credits.jsonlLocal credit log path
4. Configure your MCP client
Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) — adjust the path on Windows / Linux:

{

"mcpServers": { "northdata": { "command": "northdata-mcp", "env": { "NORTHDATA_API_KEY": "XXXX-XXXX" } } } }

Restart Claude Desktop. The NorthData tools will appear in the tool picker.

Claude Code
claude mcp add northdata --env NORTHDATA_API_KEY=XXXX-XXXX -- northdata-mcp
Cursor

Add to ~/.cursor/mcp.json:

{

"mcpServers": { "northdata": { "command": "northdata-mcp", "env": { "NORTHDATA_API_KEY": "XXXX-XXXX" } } } }

Any MCP client (generic)

Run northdata-mcp as a subprocess and speak MCP over stdio. The environment must contain NORTHDATA_API_KEY.

Tools

_Note: this server is pre-1.0, expect minor breaking changes between versions._

Every tool is a thin wrapper around the equivalent northdata-cli command. Tools are tagged free (no credits spent) or billed (consumes NorthData credits). MCP annotations (readOnlyHint, openWorldHint) are set on every tool so well-behaved clients can surface them in the UI.

Free tools

No NorthData credits are consumed by these tools.

  • `suggest` — Autocomplete company or person names. Cheap first step before spending a credit on company or person.
  • `billing` — Current remote credit usage for the billing period (numberOfRequests, periodStart, periodEnd).
  • `reference_overview` — API reference data: standards, countries, legal forms, events.
  • `reference_segment_codes` — Complete segment-code list for a given standard (default NACE2025).
  • `local_credit_log` — Credit log maintained locally by this server: total, per-month, per-entry breakdown.
Billed tools

Every one of these spends NorthData credits. NorthData charges per returned company, not per request. The credit guard enforces a two-tier ceiling on search (see Credit guard). All billed tools accept dry_run=true to build and return the URL without spending credits.

  • `search` — Power search. Cost: up to limit credits. Filters: segment_codes, segment_standard, legal_forms, address, max_distance_km, countries, status, revenue_min/max, earnings_min/max, limit, pos, approve_high_cost.
  • `company` — Full company profile (1 credit). Identify by register (e.g. HRB 123456/Muenchen) or by name + optional city. Toggles: owners, financials, representatives, extras, sheets, events.
  • `person` — Person lookup (1 credit). Returns birth date and known roles. Takes first_name, last_name, optional city.
  • `publications` — Publications lookup (1 credit). Useful for shareholder lists via source="Hrb".

Credit guard

NorthData bills per returned company. A single search call with limit=100 costs up to 100 credits. This server enforces two tiers:

TierDefaultOverride
Approval threshold — limit above this requires approve_high_cost=true25NORTHDATA_APPROVAL_THRESHOLD
Absolute maximum — hard cap, ignores approve_high_cost100NORTHDATA_ABSOLUTE_MAX (set explicitly by a human, never by an LLM)

Every billed tool call is appended to the local credit log (JSON-lines). The local_credit_log tool surfaces it. The log is informational; billing remains the source of truth.

Use dry_run=true on any billed tool to inspect the request URL before spending anything.

Security considerations

Connecting a credit-consuming data source to an LLM carries real costs and real risks. A malicious or malformed prompt can cause an agent to burn credits, leak structured company data into an untrusted chat, or combine NorthData data with other tools in unintended ways.

Recommendations
  • Keep the credit guard strict. The defaults (approval 25, absolute max 100) exist to prevent a runaway agent from draining your credits in a single call. Only raise them deliberately.
  • Prefer free tools during exploration. suggest, reference_*, and billing are free. LLMs should call these before moving to company / person / publications.
  • Use `dry_run=true` when experimenting with new search parameters or register identifiers.
  • Review tool calls before approval. Most MCP clients (Claude Desktop, Cursor) ask you to approve each tool call. Leave that setting on.
  • Limit scope per session. Launch the server with a trial API key, not your main production key, when giving it to an agent for open-ended work.
  • Prompt injection. NorthData responses contain user-generated text (company descriptions, publications) that an adversary could stuff with instructions. Treat tool output as untrusted data, not as trusted instructions to the LLM.

Development

cd northdata-mcp

python -m venv .venv && source .venv/bin/activate pip install -e "../northdata-cli" # local editable CLI pip install -e ".[dev]" pytest

Tests use FastMCP's in-memory transport — no subprocess, no network. The underlying NorthDataClient is injected via a mock factory backed by httpx.MockTransport.

Resources

License

MIT. See LICENSE.