Your dataset, fresh every day, with exactly what changed
If a notebook or ETL job already loads a CyberMax dataset, Deltawren is the same files refreshed every day, with a daily snapshot history and a "what changed since yesterday" diff for each file. Switch the base URL, add a key header, and your pipeline reads today's data and only the changed rows.
The feeds (live /api/feeds)
| Feed id | Dataset | Refresh |
|---|---|---|
| domain-ranks | Open Domain Ranks | daily (Majestic columns daily; Common Crawl columns every 1-3 months) |
| kevscope | Kevscope CVE + KEV + EPSS | daily (CISA KEV and FIRST EPSS update every day) |
| riskroll | Riskroll SEC 10-K/10-Q sections | every business day |
| form4 | SEC Form 4 insider transactions | every business day |
Source: GET https://deltawren.cybermaxtools.com/api/feeds, 10 Oct 2026.
Deltawren vs the alternatives
Published prices, each checked on the date shown; prices change, so confirm on each site.
| Product | Price | Free | Checked |
|---|---|---|---|
| Deltawren | $19-$29/month per feed, $65/month all feeds | Feed list, manifests, daily change counts | live |
| Moz API | Starter $20/mo = 3,000 rows, $75/mo = 15,000 rows (overage $5/1,000); Growth $125/mo = 50,000, $250/mo = 120,000, $500/mo = 500,000; Advanced $2,000/mo = 4 million rows | 50 rows/month | 2026-09-29 |
| OpenCVE | Starter EUR 19/mo (3 projects/users, 15 subs, 1,000 API calls/hour); Pro EUR 49/mo (10 projects/users, 50 subs, 5,000/hour); Enterprise EUR 299/mo (unlimited) | yearly: 2 bonus months free | EUR 0: 1 project, 1 user, 1 automation, 5 subscriptions, 100 API calls/hour | 2026-09-27 |
| Vulners | Basic $600/mo, 600 API credits; Pro $1,300/mo, 3,000 API credits; OEM custom. Credit costs: search 2, CPE lookup 3, export 100 (quota figures as extracted - recheck) | yearly: annual discount offered, % not listed | 100 API credits/month | 2026-09-27 |
Why teams pick Deltawren
- Same paths, columns and formats as the free datasets: one-line switch.
- Daily history snapshots, so any past day can be reproduced.
- Per-file diffs: rows added, removed and changed, matched on the file key.
- Files over HTTPS with Range requests and sha256 in the manifest.
How it works
- Pick a feed and see the newest change counts free.
- Buy a key for that feed (or all feeds).
- Point your job at /v1/<feed>/latest/ with the key header; read diffs for incremental updates.
FAQ
Why not re-download the free dataset?
The free snapshot is refreshed on its own schedule and keeps one version. The feed is rebuilt every day, keeps daily history and tells you exactly what changed.
Is there an MCP server?
Yes: https://deltawren.cybermaxtools.com/mcp (streamable HTTP) for agents that want the feed list and change counts.
What licence does the data have?
The data comes from public sources (CISA, FIRST, NIST NVD, SEC EDGAR, Majestic, Common Crawl) under their own terms, listed in each dataset card.