Semrush research

Connect the permanent Semrush Version 3 API key and run bounded keyword, domain, ranking-page and competitor research.

Use Semrush estimates without replacing evidence from your own site. The adapter supplies six existing research reports with provider-native values, coverage, cache state and API-unit cost. It does not add a Semrush-specific MCP tool or agent skill.

Use the permanent Version 3 key

Open My profile, choose API Keys, and copy the row named V3 API Key. Semrush generates one permanent Version 3 key for each account, so there is no button to create another one.

This integration accepts only that Version 3 key. It does not accept Version 4 keys. Semrush keeps the versions, keys and supported endpoints separate; its API version guide explains the distinction.

Connect it through the masked terminal prompt:

seo providers semrush connect
seo providers semrush status --check

The connection check requests the remaining API-unit balance and costs no units. The key is saved in the system keychain when available, with a private local file fallback. It is never stored in a project profile, report, cache entry or structured error.

The Semrush balance guide describes the free check and how report rows consume API units.

Remove the saved key with:

seo providers semrush disconnect

Agents and CI can supply the same Version 3 key without saving it:

SEO_SEMRUSH_API_KEY='your-version-3-key' \
  seo providers semrush status --check --json

Keep the value in the platform secret manager. Do not put it in a repository, script, report parameter, command-line flag or issue.

Run the shared research reports

Choose Semrush through the normal report input. The same report ids, schemas and evidence rules are used for every supported provider.

seo reports run keyword-metrics \
  --params '{"keywords":["technical seo","seo audit"],"countryCode":"GB","languageCode":"en","searchEngine":"google","provider":"semrush"}' \
  --json

seo reports run keyword-research \
  --params '{"seeds":["technical seo"],"sources":["ideas"],"countryCode":"GB","languageCode":"en","searchEngine":"google","limit":10,"provider":"semrush"}' \
  --json

seo reports run competitive-opportunities \
  --params '{"target":"example.com","seeds":["technical seo"],"countryCode":"GB","languageCode":"en","keywordProvider":"semrush","serpProvider":"dataforseo"}' \
  --json

seo reports run domain-overview \
  --params '{"domain":"example.com","countryCode":"GB","languageCode":"en","searchEngine":"google","provider":"semrush"}' \
  --json

The connected adapter supports:

Report	Evidence supplied
`keyword-metrics`	Search volume, cost per click, paid competition, result count, intent and keyword difficulty when Semrush returns them.
`keyword-research`	Bounded ideas, related terms and question keywords from one to five seeds.
`competitive-opportunities`	Keyword discovery for a bounded shortlist enriched with current results and competitor evidence from connected providers.
`domain-overview`	Provider-estimated organic keyword count, traffic and traffic cost for one domain.
`ranked-keywords`	A bounded set of observed terms, ranking URLs, positions and optional keyword metrics.
`ranking-pages`	Ranking pages and repeated URL patterns derived from bounded provider rows.
`serp-competitors`	Domains repeatedly observed for an explicit keyword set.

Use seo reports describe <report-id> --json before scripting a report. It returns the current input schema, reading order, caveats and related reports.

Keep requests bounded

Every cache miss checks the free balance before requesting paid data. The adapter sets the provider row limit before acquisition, rejects unbounded inputs, and records estimated and returned API units in structured evidence. If the balance cannot cover the maximum request, the paid call does not start.

Results are cached locally for seven days by default. A cache hit costs no API units and makes no provider request. Pass "refresh":true only when the decision needs a newer observation.

Semrush Version 3 research uses Google desktop data from a country-level regional database. It does not support a city, postcode, Bing or mobile market through this adapter. The requested language remains visible in the report, but Semrush does not apply it as a separate language filter.

Read the caveats before acting

Semrush metrics are external estimates. They are not Search Console impressions, measured visits, a complete keyword inventory or a forecast. Keyword difficulty is a provider metric, not a ranking probability.

Semrush marks its Version 3 keyword endpoints as deprecated. The reports keep that warning in their evidence. The Version 3 keyword reference says existing integrations remain available temporarily, so a successful request does not promise permanent endpoint availability.

Run the main first-party report before paid research:

seo report --project example

Use a Semrush report when it answers a specific gap, then verify an important term against Search Console and a current result page in the same market.