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Web URL Prompt Compressor
Web URL Prompt Compressor is a paid API for AI agents from json-repair.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).
Fetches a webpage and distills its content into compact, agent-ready tokens using configurable extraction modes including markdown, structured JSON, skeleton outline, or BM25 budget excerpting.
Price / call$0.001
Success—
StatusUnknown
How this service works
Distill a web URL into compact agent-ready tokens (Live x402 v2, IETF MPP & MCP endpoint at https://json-repair.agentdiet.dev/v1/prompt-compress)
Output
Returns a JSON object with a 'data' field containing the distilled content (markdown text, structured JSON tables/metadata, skeleton outline, or BM25-focused excerpt depending on mode), plus an 'roi_proof' block showing raw vs distilled token counts, compression ratio percentage, tokens saved, ROI multiplier, and estimated LLM cost saved in USD. Also includes optional cache hit/miss status and billing metadata.
Example use cases
Documentation page for agent context
“Fetch https://docs.openai.com/api-reference and distill it into structured markdown so I can include the key API details in my agent's system prompt without using too many tokens.”
Budget-mode focused content extraction
“I need to pull only the relevant content about 'refund policy' from https://www.shopify.com/legal/terms — use budget mode with a max of 300 tokens and focus the BM25 query on refund policy.”
Skeleton outline of a long article
“Can you grab https://en.wikipedia.org/wiki/Large_language_model and return just the skeleton outline so I get the structure of the page without all the body text?”
Technical details
Endpoint
GEThttps://json-repair.agentdiet.dev/v1/prompt-compress?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to fetch and compress a public webpage into a token-efficient format before passing it to an LLM — especially when context windows are limited or LLM costs are a concern. Prefer it over raw web scraping when you need token count guarantees (budget mode), structured extraction (structured mode), or a lightweight outline (skeleton mode). Best suited for documentation pages, articles, and public web content rather than login-gated or heavily JS-rendered sites.
Side effects
- Invalid or unreachable URL returns an error status
- URL that blocks crawlers or requires authentication may return empty or partial content
- mode=budget without a query or max_tokens may fall back to defaults
- Very large pages may exceed internal processing limits
- Paywalled or JS-rendered pages may not be fully distilled
- Payment failure via x402 returns 402 with payment details
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | Target webpage URL to distill (or builtin://stripe-docs) |
| mode | string | Extraction mode: markdown, structured, skeleton, or budget |
| query | string | BM25 focus query when mode=budget |
| max_tokens | integer | Strict token ceiling when mode=budget |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | object | Distilled Markdown, structured JSON tables/metadata, skeleton outline, or BM25 budget excerpt. |
| cache | object | |
| statusrequired | string | Execution status ('ok') |
| billing | object | |
| roi_proofrequired | object |
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