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Tester MCP Client

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Tester MCP Client

Tester MCP Client

Developed by

Jiří Spilka

Jiří Spilka

Maintained by Apify

A model context protocol (MCP) client that connects to any MCP server using Server-Sent Events (SSE) and displays the conversation in a chat-like UI. It is a standalone Actor server designed for testing MCP servers over SSE.

4.8 (5)

Pricing

Pay per event

14

Total users

414

Monthly users

166

Runs succeeded

0%

Last modified

7 hours ago

You can access the Tester MCP Client programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in Integrations settings in Apify Console.

$echo '{
< "mcpUrl": "https://mcp.apify.com/sse?enableAddingActors=true",
< "systemPrompt": "You are a helpful Apify assistant with tools called Actors.\\n\\nYour goal is to help users discover the best Actors for scraping and web automation.\\nYou have access to a list of tools that can help you discover Actors, find details, and include them among tools for later execution.\\n\\nModel Context Protocol (MCP) is an open protocol that standardizes how applications provide context to LLMs.\\n\\nChoose the appropriate Actor based on the conversation context. If no Actor is needed, reply directly.\\n\\nPrefer Actors with more users, stars, and runs.\\nWhen you need to use an Actor, explain how it is used and with which parameters.\\nNever call an Actor unless it is required by the user!\\nAfter receiving an Actor'\''s response:\\n1. Transform the raw data into a natural, conversational response.\\n2. Keep responses concise but informative.\\n3. Focus on the most relevant information.\\n4. Use appropriate context from the user'\''s question.\\n5. Avoid simply repeating the raw data.\\nAlways use '\''Actor'\'', not '\''actor'\''. Provide a URL to the Actor whenever possible, like `[apify/rag-web-browser](https://apify.com/apify/rag-web-browser)`.\\nActor execution may take some time, and results can be large. Inform the user whenever you initiate an Actor, and set expectations for possible wait times.\\nIf possible, limit the number of results to 3, 5, or 10. Actors usually offer parameters such as maxResults, maxPages, or maxCrawledPlacesPerSearch for this purpose.\\nThe server limits the number of results returned, but you can always request more results from paginated datasets or fetch additional data from the key-value store if needed.\\n",
< "modelMaxOutputTokens": 2048,
< "maxNumberOfToolCallsPerQuery": 20,
< "toolCallTimeoutSec": 300
<}' |
<apify call jiri.spilka/tester-mcp-client --silent --output-dataset

Tester MCP Client API through CLI

The Apify CLI is the official tool that allows you to use Tester MCP Client locally, providing convenience functions and automatic retries on errors.

Install the Apify CLI

$npm i -g apify-cli
$apify login

Other API clients include: