5 agent-payable APIs. Every listing carries a tested call recipe - endpoint, auth shape, pricing, and known gotchas - on its detail page. grokaiapps.com ↗
Call for a one-shot change detector: fetch a public URL, hash normalized main text (sha256), optionally compare to previous_hash. Returns hash, changed true/false/null, word_count. Use for cheap page-watch loops; not a persistent webhook subscription.
Call when you need a researched written brief on a topic (not instant). Delivered within 24h, usually same day: ~500 words default (max_words 50-1500), at least 3 cited public source links. Returns job id + dueBy now; poll GET /v1/jobs/:id (free) for result {title, summary, body_markdown, sources, word_count}. Public web sources only.
Call when you need a cheap reachability/health check before a heavier fetch. Probes a public http(s) URL (HEAD, GET fallback): status, final URL, content-type, timing. No full body download (GET peeks ≤8KB). SSRF-safe public hosts only. Not for authenticated or private network URLs.
Call when an agent needs readable main content from a public web page as markdown plus title/description. Use for summarization, RAG ingest, or quoting without a browser. Fetches once; blocks private/SSRF targets. Not for authenticated, paywalled, or non-HTML resources.
Call when you have messy text (JSON blob or key:value lines) and need a heuristic object shaped by schema_hint — no LLM. Cap 50k chars. Use to normalize tool dumps before structured follow-up. Not for NLP understanding or free-form writing.