The invisible savings layer for AI Agents. Save 70% on tokens with zero code changes
The invisible savings layer for AI Agents. Save 70% on tokens with zero code changes. That is what the promptthin mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.
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.
Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
The server publishes 3 tools. What each one is for:
LangChain — The LangChain tool exposed by this serverAutoGen — The AutoGen tool exposed by this serverLiteLLM — The LiteLLM tool exposed by this serverConfiguration is passed through the environment: OPENAI_BASE_URL, OPENAI_API_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. PromptThin's toolset — LangChain, AutoGen, LiteLLM — is a fair guide to whether it matches your workflow.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| LangChain | The LangChain tool exposed by this server. |
| AutoGen | The AutoGen tool exposed by this server. |
| LiteLLM | The LiteLLM tool exposed by this 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.
| Variable | Description | Required |
|---|---|---|
| OPENAI_BASE_URL | Endpoint or connection string the server talks to. | Yes |
| OPENAI_API_KEY | Credential the server authenticates with. | Yes |
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