Model Context Protocol

AI Agent Tools on Taxcoder.cz

Machine-readable access to the Taxcoder marketplace for ChatGPT, Claude, and other MCP-compatible assistants.

Taxcoder.cz is an online marketplace that connects users with verified tax specialists in the Czech Republic. AI agents can use read-only tools through the Model Context Protocol (MCP). Below you will find the available tools and step-by-step instructions to connect Taxcoder to Claude or ChatGPT.

Available tools

Public

Browse tax categories

Lists active expertise areas, such as personal income tax, VAT, and corporate tax. Agents use categories instead of enumerating specialists by name or ID.

list_tax_categories

Public

Search specialists by category

Returns approved, available specialists with bio, credentials, KDP ČR verification link, expertise areas, average rating, review count, and Taxcoder profile link.

search_specialists

Public

Get a specialist profile

Returns one specialist’s public bio, credentials, services with CZK prices, recent reviews, and links to their Taxcoder page.

get_specialist

Sign-in required

My service purchases

Your purchases as a client and incoming sales as a specialist, labeled by direction, with CZK amounts, status, deadlines and website links to manage or review.

list_my_purchases

Sign-in required

My custom proposals

Proposals received as a client and sent as a specialist, with CZK prices, status and conversation links to review an unpaid offer or follow up. Payments stay on Taxcoder.

list_my_proposals

Sign-in required

My conversation activity

Only thread metadata: counterpart name where accessible, latest message time, unread count and whether the last message came from the other person. No messages, documents or attachments. Open the conversation on Taxcoder to reply.

list_my_conversations

Sign-in required

My specialist services

Your own active and inactive services, with fixed, per-unit or quote pricing. Create or manage services on the website; this tool never changes them.

list_my_services

How access works

Public tools return only information already visible on taxcoder.cz and require no sign-in. Agents see exactly the same specialists as the website directory: approved profiles that accept secure online payments.
All tools are read-only. Agents cannot book, pay, send messages, or change account data.
Every result includes a relevant taxcoder.cz link so the user can continue securely on the platform.

For agent developers

Protocol: Model Context Protocol (MCP), with read-only tool annotations.
Discovery: browse by category; do not enumerate specialists by ID or name.
Machine-readable site overview
Sitemap

How to connect Taxcoder to your assistant

Taxcoder uses a single connector address. Paste it once: browsing tools work immediately and no account is needed.

Connector address: https://taxcoder.cz/mcp

The full address is shown above the button. Click the button to copy it, then paste it into the “MCP server URL” field in your assistant when adding the connector.

Optional: connect your own Taxcoder account

Use the same /mcp address for public browsing or OAuth account access. Signing in immediately keeps all three public tools available and adds four personal tools. You can connect later if your assistant supports it; refresh its tool list after approval. If you selected “No authentication”, you may need to change the connector to OAuth or add the account address below. Taxcoder cannot change your assistant’s authentication setting.

https://taxcoder.cz/mcp-account

For account access in ChatGPT, choose OAuth, not “No authentication”; in Claude Code, open /mcp and authenticate Taxcoder. Claude, Perplexity and other clients can use personal tools only if they support remote MCP OAuth. After approval, ask for your purchases, sales, sent/received proposals, conversation activity or own specialist services. Payments and checkout always happen on taxcoder.cz, never in an AI chat. Never paste passwords or tokens into a chat or configuration.

Claude (desktop and web)

Open Settings → Connectors and choose “Add custom connector”.
Enter the name “Taxcoder” and paste the connector address shown above into the “MCP server URL” field.
Confirm with “Continue”. Browsing tools work right away and no Taxcoder sign-in is required.
Start a new chat — the Taxcoder tools are available.

Claude Code (CLI)

claude mcp add --transport http --scope user taxcoder https://taxcoder.cz/mcp
claude mcp add --transport http --scope user taxcoder-account https://taxcoder.cz/mcp-account

Claude’s “Add custom connector” dialog, with the Taxcoder connector address filled into the “MCP server URL” field.

ChatGPT

Open Settings → Connectors (or developer-mode connectors, if enabled).
Choose “Create” / “Add custom connector” and enter the name “Taxcoder”.
Paste the connector address shown above. Choose “No authentication” for public tools only, or OAuth to connect your account. If a combined OAuth / no-authentication option is available, later sign-in depends on the assistant’s support.
With OAuth, approve access on Taxcoder: all seven tools are available, including the three public tools. With “No authentication”, public browsing works immediately; later account access may require changing the connector setting or adding the account connector below.
Save, then enable Taxcoder in the chat tool picker.

Try these prompts

“Which tax categories are available on Taxcoder?”
“Find verified VAT specialists on Taxcoder.”
“Show me this specialist’s Taxcoder profile.”

Other MCP-compatible agents

Use an HTTP connection to https://taxcoder.cz/mcp. Public tools work without authentication; OAuth on the same address adds personal tools without removing public ones. For clients that accept mcpServers configuration, use the example below; field names may vary by client.

{
  "mcpServers": {
    "taxcoder": {
      "type": "http",
      "url": "https://taxcoder.cz/mcp"
    }
  }
}

Check the connection: ask your agent to list Taxcoder tax categories. It should use list_tax_categories; then search_specialists and get_specialist return public profiles with links.

If the tools do not appear, enable Taxcoder in your assistant and start a new chat. Use an MCP client with HTTP support, not a browser tab. Custom connectors may require developer mode or permission from your workspace administrator.

Browse verified specialists