Unverified50% confidenceFactExact time
The official Playwright MCP server currently exposes more than 20 tools, each of which must be declared in JSON Schema format and injected into the context all at once before the conversation begins.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/24/2026
First Seen
Valid until: 12/23/2026
Sources
Related Entities
Related Claims
UnverifiedThe scalability problem with MCP is that the name, description, and schema of each tool must be placed in the system prompt, and 20 servers with 15 tools each would occupy most of the context window.75% similarUnverifiedA healthy MCP Server typically contains 5–20 purpose-specific tools rather than integrating a large number of tools.74% similarUnverifiedMCP's default implementation injects the schemas of all registered tools into the context at session initialization; when the number of tools reaches dozens or even hundreds, tool descriptions alone may consume thousands of tokens.73% similarUnverifiedMCP's tool discovery mechanism queries the tool list of a connected Server via the tools/list interface, with parameter schemas based on the JSON Schema specification.72% similarUnverifiedA working MCP server can be built with approximately 20 lines of Python code.72% similar
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