Fetch one public absolute HTTP or HTTPS URL and extract readable text. Only HTML/XHTML is supported, with a 1 MiB decoded-body limit and extracted text capped at 6,000 characters. Article/main content is preferred and common page furniture is omitted. Default mode=scrape returns the extraction envelope. Use mode=chunk (accepted alias: chunked) for approximately budgeted chunks, or mode=summarize for sentence-based truncation. Chunking preserves words, URLs, and recognized table rows; an intact URL, word, or table row may exceed max_tokens. Whitespace can be normalized during chunking. tokens and approx_tokens are character-based sizing estimates, not tokenizer counts or exact billing measurements. tokens_saved_estimate compares source HTML and delivered text estimates when the baseline is available; cached results may preserve the original extraction economics. Savings are not limited to summarize mode. truncated reports content truncation; split reports multiple chunks. The character cap applies before mode transformation. max_tokens is ignored in scrape mode. Set cache=false to bypass cache reads; successful fresh results may still be written to cache. JavaScript rendering is available only when enabled by the operator. If render_js_disabled is returned, retry with render_js=false. Execution failures are reported in-band with isError=true.