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PatchDelta / Reference

FAQ

Common questions about PatchDelta: data sources, update cadence, scope, and how to report errors. For deeper detail on classification and computation, see /methodology.

  1. Q.01

    Where does the data come from?

    Each game's official patch notes — Treyarch / Activision for Black Ops 7, Riot Games for League of Legends and Valorant, Valve for Counter-Strike 2, and Respawn / EA for Apex Legends. We don't datamine and we don't speculate. If the publisher hasn't published it, we don't carry it as a high-confidence entry. Per-game source links are on /methodology.

  2. Q.02

    How often is data updated?

    Within 24 hours of a patch landing, usually faster. We monitor the official patch notes feed and ingest each new multiplayer note as it goes live. The build date in the site footer reflects the most recent ingest.

  3. Q.03

    Why don't I see a weapon I expect?

    Two reasons. Either the weapon was added in a patch we haven't ingested yet (rare, usually under 24 hours), or it's a Warzone-only or Zombies-only weapon and falls outside our scope. PatchDelta is multiplayer-only. If you think a multiplayer weapon is missing, email us.

  4. Q.04

    Why are URLs hyphenated (for example /bo7/weapons/ak-27)?

    Slugs are the public identity of each item. We use lowercase hyphens end-to-end so URLs are stable, readable, and don't break on case-sensitive servers. The pattern is /<game>/<collection>/<item-slug> — for example:
    /bo7/weapons/ak-27          ✓ canonical
/bo7/weapons/AK-27          ✗ 404
/bo7/weapons/ak_27          ✗ 404
/bo7/compare/ak-27-vs-mxr-17 ✓ pair slug, both hyphenated
    Underscore or mixed-case variants don't redirect; they 404 by design, so there's exactly one canonical URL per item.

  5. Q.05

    What's the difference between buff, nerf, mixed, and qualitative?

    Direction labels for a single change. Buff means strictly better for the player. Nerf means strictly worse. Mixed means both inside one entry, like damage down and range up. Qualitative means a change with no published number, tagged with direction from context. See /methodology for worked examples.

  6. Q.06

    How do you handle reworks?

    For Black Ops 7: when Treyarch substantially restructures a weapon, the cumulative baseline resets at the rework patch. The post-rework weapon is treated as a fresh entity, not as continuing deltas from the pre-rework version. The patch where the rework happened stays in the changelog with a rework tag.

  7. Q.07

    Are attachment changes included in the cumulative delta?

    No. Attachment-level changes are tracked in the changelog but do not roll into the base weapon's cumulative numerical delta. Pulling them into the base would conflate the gun with one specific build.

  8. Q.08

    Why is some data marked low confidence?

    For Black Ops 7: when Treyarch hasn't published an explicit MP note for a change we believe is real — community-reported, observed in-game, or datamined — we mark the entry low-confidence and exclude it from cumulative totals until promoted. See methodology / confidence levels for the full framework.

  9. Q.09

    Do you cover Warzone, Zombies, or Campaign?

    No. PatchDelta is multiplayer-only. Warzone and Zombies have separate balance tracks and excellent dedicated communities; rolling them into MP cumulative deltas would produce misleading numbers.

  10. Q.10

    How do I report a data error?

    Email hello@patchdelta.net with the weapon, the stat you think is wrong, the patch, and a link to the source you believe is correct. Confirmed corrections ship within 48 hours.

  11. Q.11

    Are you affiliated with Activision or Treyarch?

    No. PatchDelta is independent and unaffiliated. Call of Duty and Black Ops are trademarks of Activision Publishing, Inc. We have no studio relationship, no early access, and no NDA. The same applies to all publishers whose games we track — Activision, Riot Games, Valve, and Electronic Arts / Respawn Entertainment.

  12. Q.12

    Is there a public API?

    Yes. PatchDelta exposes a read-only JSON API at /api/v1/* covering games, weapons, champions, agents, and patches for every game tracked. It's static, CDN-cached, CORS-enabled, and requires no auth. The full endpoint reference lives at /api.

Still stuck?

Question not answered here? Email hello@patchdelta.net. If it comes up more than twice we'll add it to this page.