Grounder MCP is a tool that provides real-time web grounding for local and cloud-based large language models, delivered in the form of four MCP tools, and is a https://grounder.dev lightweight stdio client for the hosted service. Users can obtain the project at the GitHub repository rozetyp/grounder-mcp.
In terms of purpose, every large model is frozen at its training cutoff, and Grounder connects the model to the current web, providing ranked search results, actual web page content, and evidence packs with citations to help the model obtain the latest information.
Its main capabilities cover four areas: real-time web search, page fetch, deep_search evidence packs, and an agentic search-and-read research loop. Its results are returned within token limits and can fit local small-context models with 8–32k, rather than letting raw web page content overflow the context—according to the materials, a few pages of raw content can exceed 20,000 tokens (a measured value of 22,759 tokens in one query), enough to make a small model return empty results; Grounder returns relevant passages rather than whole pages. fetch reads the actual current page rather than a cached copy; any cache is short-lived, timestamped, and can be forcibly refreshed.
In terms of usage, it is a lightweight stdio client for the hosted service, requiring no local browser or crawler to run, and does not run any heavy components. It supports Claude Desktop, Cursor, LM Studio, Continue.dev, or any MCP client. The key is optional: omit the key to try Grounder with a shared demo key, or add your own free key from grounder.dev. The repository lists the specific folders and files as well as usage instructions.
In terms of pricing, the materials give: the free tier is 1,500 pages per month, no credit card required; Starter is $9 per month; Pro is $19 per month. It uses a fixed monthly price with per-page billing, paying only for pages actually delivered, with no per-call metering. The full price list is at https://grounder.dev/pricing。
The main use cases are environments that need to supplement local or cloud-based large language models with real-time web information and that have small context windows. In terms of limitations, the materials clearly state: it must rely on the https://grounder.dev hosted service, is a thin client, and does not run a browser or crawler locally; there is no storage of query content (query content is never stored); the free key is 1,500 pages per month. Other details, such as installation commands, specific configuration steps, and full tool parameters, are not yet provided in the official text.
