Recency and domain filtering are the two parameters that change answer quality most: restricting to the last week keeps a fast-moving topic from returning three-year-old pages, and naming domains is how you keep an answer inside sources you trust. Citations come back with the results, so a claim can be checked rather than taken. A single static binary with one environment variable is about as little operational surface as a search tool can have.
A Go implementation of a Perplexity search bridge. One tool, but with the full parameter surface of the underlying API exposed rather than a simplified wrapper.
- `perplexity_search` performs a web search and returns results with citations
- `search_recency_filter` narrows results to the last month, week, day or hour
- `search_domain_filter` restricts the search to a list of domains you name
- `return_images` and `return_related_questions` add image links and follow-up questions to the response
- Generation controls passed straight through — `max_tokens`, `temperature` defaulting to 0.2, `top_p` defaulting to 0.9, `presence_penalty`, `frequency_penalty` and streaming
- `web_search_options` carries additional search configuration such as context size
Go 1.23 or higher to build the binary, or the Dockerfile in the repository, or a one-line install through Smithery. A Perplexity API key in PERPLEXITY_API_KEY, either in the shell or in the client's env block.
One command plus a key — npx -y @smithery/cli install @chenxilol/perplexity-mcp-go --client claude, then supply credentials