About
Mcp Prompt Mapper transforms input from mcp_input_analyzer into structured, schema‑compliant prompts. It supports JSON and YAML outputs, cross‑API compatibility, and streaming input parsing for efficient MCP server development.
Capabilities

MCP Prompt Mapper is an open‑source MCP server component that turns raw analysis data into finely tuned prompts for popular LLM APIs such as Claude, Grok, and OpenAI. In practice it bridges the gap between low‑level input descriptors produced by tools like and the high‑quality, API‑specific prompts that an AI assistant needs to function efficiently. By automating prompt construction, developers can avoid repetitive boilerplate and ensure that every resource or tool they expose to the assistant is described with the correct structure, semantics, and context.
The server’s core value lies in its prompt templating capability. It accepts a simple dictionary describing a resource type, tool name, or other metadata and outputs a ready‑to‑use prompt in either JSON or YAML format. The output is automatically optimized for Claude’s syntax and can be re‑used to generate MCP resources, tool definitions, or even additional prompts that feed back into the assistant’s workflow. This eliminates manual prompt crafting and reduces the likelihood of human error or inconsistency across different parts of an MCP deployment.
Key features include:
- Cross‑API Compatibility – Prompts are generated with syntax that works for Claude, Grok, and OpenAI, making the server a single source of truth for multi‑vendor environments.
- Schema‑Aware Auto‑Complete – The mapper validates input against predefined schemas, ensuring that generated prompts adhere to required fields and types.
- Streaming Input Parsing – For interactive tools such as Claude Desktop, the server can process incremental data streams and emit prompts on‑the‑fly, enabling real‑time tool creation without blocking.
- Custom Output Formats – Developers can choose between JSON and YAML, allowing seamless integration with existing configuration pipelines or CI/CD workflows.
Typical use cases span from rapid prototyping of new MCP tools to large‑scale deployment pipelines. A data engineer might feed the mapper a list of database schemas, and the server would output fully formed prompts that can be immediately registered as MCP resources. In a continuous integration setting, the mapper can generate tool definitions from test suites, ensuring that any new capability is instantly available to the assistant. Because the prompts are schema‑validated and API‑specific, teams can maintain a single codebase for prompt generation while supporting multiple LLM backends.
Integration into an MCP workflow is straightforward: the mapper sits behind a REST or gRPC endpoint that receives analysis data, returns structured prompts, and those prompts are then consumed by the MCP server’s resource or tool creation routines. This decouples prompt logic from business logic, allowing developers to update templates without touching the core server code. The result is a more maintainable, scalable system where AI assistants can be extended quickly with new tools or resources, all while preserving consistency and optimal performance across different LLM providers.
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