Compare Domains - Markifact

Keyword gap analysis between 2-5 domains — find shared keywords, keywords unique to your domain, or untapped keywords competitors rank for that you don’t. Semrush requires a Markifact connection using an API key from a Semrush Business or Enterprise subscription.


App	SEMrush
Operation ID	`semrush_compare_domains`
Type	Action
Connection	`semrush` (required)
Credits per run	Free
Agent / MCP tool	Yes

Inputs

Field	Type	Required	Default	Description
`domains`	array of string or string	Yes	-	2 to 5 domains to compare. Accepts a list or a newline/comma-separated string. The first domain is treated as ‘your’ domain for the unique and untapped modes.
`mode`	string or SelectItem	No	`shared`	Comparison mode: ‘shared’ (keywords all domains rank for), ‘all’ (keywords any domain ranks for), ‘unique’ (keywords only the first domain ranks for), ‘untapped’ (keywords competitors rank for but the first domain doesn’t).
`keyword_type`	string or SelectItem	No	`or`	Compare ‘or’ (organic) or ‘ad’ (paid) keywords.
`database`	string	No	`us`	Regional database (country code). E.g. us, uk, ca, au, de, fr, es, it, br. Defaults to ‘us’.
`export_columns`	array of string or SelectableOption	No	-	List of columns to return. Available: Ph (keyword), P0-P4 (position of each compared domain, in input order), Nq (search volume), Cp (CPC), Co (competition), Nr (SERP results), Kd (keyword difficulty), Td (trends).
`limit`	integer	No	-	Maximum number of rows to return.

SelectItem

Field	Type	Required	Default	Description
`value`	string	Yes	-	The value of the selectable item.
`label`	string	Yes	-	The label of the selectable item, used for display purposes. If not provided, defaults to the value.

SelectableOption

Field	Type	Required	Default	Description
`value`	string	Yes	-
`label`	string	Yes	-

Output

Type: List[Dict] Returns one row per keyword with: keyword, domain1Position-domain5Position (position of each compared domain, in input order), searchVolume, cpc, competition, keywordDifficulty. Fields: keyword, domain1Position, domain2Position, searchVolume, cpc, competition, keywordDifficulty Example:

[
  {
    "keyword": "seo tools",
    "domain1Position": 4,
    "domain2Position": 1,
    "searchVolume": 18100,
    "cpc": 12.5,
    "keywordDifficulty": 72
  }
]