Tarifkatalog MCP
An MCP server that allows AI assistants to query German mobile and data tariffs, including prices, data volumes, networks, and terms, ranked by average monthly cost over 24 months. It supports searching for specific tariff criteria and retrieving detailed provider information without requiring user authentication.
Endpoint and access
No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.
https://tarifkat.de/mcp/openWhat its tools do
3 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.
Read-only (3)
Checks and signals
Each line is separate evidence, not a trust score.
- Passed Endpoint answered the live check ·
- Passed Official MCP Registry namespace is tied to tarifkat.de ·
- Passed Endpoint is on the registry namespace domain ·
- Availability 1 of 1 checks passed in 30 days
What you can do with it
- Search for mobile tariffs by data volume, network, or provider
- Retrieve detailed tariff costs and price history
- Find the cheapest monthly cancellable tariff on a specific network
- Compare prepaid tariffs with 5G capabilities
Source and maintenance
Protocol and capabilities
- Server
- Tarifkatalog 1.0.0
- MCP protocol negotiated in check
- 2025-11-25
- Tools
- 3 advertised
- Resources
- Not advertised
- Resource templates
- Not advertised
- Prompts
- Not advertised
{
"tools": {
"listChanged": false
}
}Server-provided instructions
Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.
Tools
3 advertised
search_tariffs — Search mobile tariffs
Searches current German SIM-only mobile tariffs, or data-only tariffs, and returns them ranked, cheapest average monthly cost over 24 months first. Use it to find or compare tariffs by data volume, network, contract term, 5G, speed or provider. Returns at most 30 tariffs and the total number that match. Covers Germany only, SIM-only tariffs without a phone.
{
"type": "object",
"properties": {
"kind": {
"enum": [
"phone",
"data"
],
"type": "string",
"description": "phone: tariffs with calls and texts (default). data: data-only tariffs for tablets, laptops or routers."
},
"sort": {
"enum": [
"price",
"monthly_fee",
"data",
"speed"
],
"type": "string",
"description": "price: average monthly cost over 24 months (default). monthly_fee: lowest first monthly fee. data: most data first. speed: fastest first."
},
"limit": {
"type": "integer",
"maximum": 30,
"minimum": 1,
"description": "Number of tariffs to return, default 10."
},
"only_5g": {
"type": "boolean",
"description": "Only tariffs with 5G."
},
"language": {
"enum": [
"de",
"en",
"ru",
"tr",
"uk"
],
"type": "string",
"description": "Language of the text fields and of the linked pages. Default de."
},
"networks": {
"type": "array",
"items": {
"enum": [
"telekom",
"vodafone",
"o2",
"1und1",
"d-netz"
],
"type": "string"
},
"description": "Any of these networks; empty for all. d-netz: resellers that promise Telekom or Vodafone without saying which."
},
"provider": {
"type": "string",
"description": "Only this provider, by its slug as in the provider list, e.g. winsim."
},
"commitment": {
"enum": [
"none",
"prepaid",
"contract"
],
"type": "string",
"description": "none: cancellable monthly (prepaid included). prepaid: prepaid only. contract: minimum term of 12 months or more."
},
"allnet_flat": {
"type": "boolean",
"description": "Only tariffs with unlimited calls and texts to all German networks; ignored for data tariffs."
},
"min_data_gb": {
"type": "integer",
"minimum": 0,
"description": "Minimum high-speed data per month in GB; unlimited tariffs always qualify."
},
"unlimited_data": {
"type": "boolean",
"description": "Only tariffs with unlimited data."
},
"min_download_mbit": {
"type": "integer",
"minimum": 0,
"description": "Minimum advertised download speed in Mbit/s."
}
},
"additionalProperties": false
}{
"title": "Search mobile tariffs",
"readOnlyHint": true,
"openWorldHint": false,
"idempotentHint": true,
"destructiveHint": false
}get_tariff — Get tariff details
Returns one tariff in full: all costs, data, network, speed, term, a one-sentence summary and its price history. Use it when the user asks about one specific tariff, given by the id that tariff search results contain.
{
"type": "object",
"required": [
"id"
],
"properties": {
"id": {
"type": "integer",
"description": "The tariff's id, as in tariff search results."
},
"language": {
"enum": [
"de",
"en",
"ru",
"tr",
"uk"
],
"type": "string",
"description": "Language of the text fields and of the linked pages. Default de."
}
},
"additionalProperties": false
}{
"title": "Get tariff details",
"readOnlyHint": true,
"openWorldHint": false,
"idempotentHint": true,
"destructiveHint": false
}list_providers — List providers
Lists the German mobile providers in the comparison with their slug, number of phone and data tariffs, cheapest average monthly cost and networks. Use it to see which providers are covered and to get the slug that filters a tariff search by provider.
{
"type": "object",
"properties": {
"language": {
"enum": [
"de",
"en",
"ru",
"tr",
"uk"
],
"type": "string",
"description": "Language of the text fields and of the linked pages. Default de."
}
},
"additionalProperties": false
}{
"title": "List providers",
"readOnlyHint": true,
"openWorldHint": false,
"idempotentHint": true,
"destructiveHint": false
}Prompts
Not advertised
Resources
Not advertised
90-day uptime
A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.
- 2026-11-09: 1 of 1 checks answered
- 2026-11-10: 1 of 1 checks answered
30-day availability
Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.
- Successful checks
- 1 of 1 (100%)
- Average latency
- 675 ms
- 95th percentile latency
- 675 ms
Maintenance history
Public check and source-refresh events. Editorial and ownership records remain private.
- · probe · passed · 675 ms · metadata changed · 3 tool(s)
Connect from your client
Each snippet registers the same endpoint; pick the client you use.
Claude Code
claude mcp add --transport http tarifkatalog-mcp https://tarifkat.de/mcp/openCodex
codex mcp add tarifkatalog-mcp --url https://tarifkat.de/mcp/openCursor
{
"mcpServers": {
"tarifkatalog-mcp": {
"url": "https://tarifkat.de/mcp/open"
}
}
}Cline
{
"mcpServers": {
"tarifkatalog-mcp": {
"type": "streamableHttp",
"url": "https://tarifkat.de/mcp/open",
"disabled": false
}
}
}VS Code
{
"servers": {
"tarifkatalog-mcp": {
"type": "http",
"url": "https://tarifkat.de/mcp/open"
}
}
}Gemini CLI
gemini mcp add --transport http tarifkatalog-mcp https://tarifkat.de/mcp/openClaude Desktop
https://tarifkat.de/mcp/openWindsurf
{
"mcpServers": {
"tarifkatalog-mcp": {
"serverUrl": "https://tarifkat.de/mcp/open"
}
}
}Let your agent find its tools
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