Semrush Keyword Difficulty API docs

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Platform API endpoint with unified authentication and usage tracking.

Production API

Platform API endpoint

https://api.sandbase.ai/v1/api/semrush/keyword-difficulty

Authorization header

Authorization: Bearer $SANDBASE_API_KEY

# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/api/semrush/keyword-difficulty" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "phrase": "running shoes",
  "database": "us"
}
SANDBASE_JSON
)
printf '%s\n' "$result"

2. Authentication

Set your SandBase API key in your server environment. Requests use Bearer authentication.

API key environment variable

export SANDBASE_API_KEY="YOUR_API_KEY"

Keep your key on the server. Do not expose it in browser code.

3. Parameters

`database`stringrequired

Regional Semrush database, e.g. "us", "uk", "de".

`phrase`stringrequired

Keyword to analyze, e.g. "running shoes".

4. Response

Saved example response for this API; no live request is made when viewing it.

No saved response has been published. Run the API in Playground to inspect its response.