How do I install the promptthin mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `OPENAI_BASE_URL`, `OPENAI_API_KEY` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

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PromptThin MCP Server

The invisible savings layer for AI Agents. Save 70% on tokens with zero code changes

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What is the PromptThin MCP Server?

The invisible savings layer for AI Agents. Save 70% on tokens with zero code changes

The short version

PromptThin is a transparent proxy that sits between your AI agents and LLM providers. Two environment variables and you're done — every API call gets five compounding savings routes applied automatically.

The tools it exposes

The server publishes 3 tools. What each one is for:

LangChain — The LangChain tool exposed by this server
AutoGen — The AutoGen tool exposed by this server
LiteLLM — The LiteLLM tool exposed by this server

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

How to install the PromptThin MCP Server

{
  "mcpServers": {
    "promptthin": {
      "command": "cmd",
      "args": [
        "/c", "npx", "mcp-remote@latest",
        "https://promptthin.tech/mcp",
        "--header", "X-API-Key: ts_your_key"
      ]
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

Variable	Description	Required
OPENAI_BASE_URL	Endpoint or connection string the server talks to.	Yes
OPENAI_API_KEY	Credential the server authenticates with.	Yes

Example prompts to try

“Use PromptThin to LangChain.”
“Use PromptThin to AutoGen.”
“Use PromptThin to LiteLLM.”

Frequently asked questions

The invisible savings layer for AI Agents. Save 70% on tokens with zero code changes Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.