KDP Backend Keywords

Generate the 7 backend keywords Amazon KDP asks for — from seed terms, using Amazon's own search suggestions. Paste the result straight into your KDP "7 keywords" boxes (50 characters each).

Why this exists

Every KDP title needs 7 backend keywords (≤50 chars) that determine which searches your book appears in. Getting them right is the difference between showing up and staying invisible — but most self-publishers either guess or leave them empty. This actor turns a seed idea into a ranked, ready-to-paste set, using the exact suggestion data Amazon shows real shoppers.

What you get

• A ranked list of keywords (Amazon's own popularity order) — free to view
• The 7 backend keywords, packed to 50 chars each, deduped, noise-filtered
• Saved to the key-value store as BACKEND_KEYWORDS for quick copy-paste

Input

Field	Type	Default	Description
seeds	array[string]	["puzzle book"]	Topics to expand
expansionMode	choice	alphabet	suggestions / alphabet / modifiers / deep
marketplace	choice	us	amazon.com, .co.uk, .ca, .com.au, .de, .fr, .it, .es, .in, .co.jp
maxKeywordsPerSeed	integer	200	Cap per seed (max 3000)
charLimit	integer	50	Backend keyword length cap

Output

One dataset item per discovered keyword:

{
  "keyword": "puzzle books for adults",
  "seed": "puzzle book",
  "rank": 1,
  "charCount": 23,
  "fitsBackend": true,
  "marketplace": "us"
}

Plus BACKEND_KEYWORDS in the key-value store:

{
  "marketplace": "us",
  "keywords": [
    "puzzle books for adults",
    "puzzle book for teens",
    "puzzle books",
    "puzzle book",
    "puzzle books for adults variety packs",
    "puzzle books for seniors",
    "puzzle book age 5-6"
  ]
}

Pricing

Pay-per-event: $0.15 per backend-keyword package (one 7-keyword set per seed)

• apify-actor-start ($0.05, auto). The full keyword list is free to view; you only pay for the paste-ready 7-keyword pack. A run with 3 seeds = $0.45, against $79 (KDSPY) or $199 (Publisher Rocket) for the same job.

Notes

• Amazon does not publish search volume. rank is the position Amazon itself gave the term in its suggestion list — a genuine popularity signal, not a modelled number.
• Backend keywords must be ≤50 chars in KDP; the pack respects this.
• No browser needed — uses Amazon's lightweight suggestion endpoint, so runs are fast and cheap.