Marked Indirect Prompt Injection
Install
npx -y skills add every-app/open-seo --skill keyword-clustering --agent claude-codeRun in a terminal. Claude loads the skill when a task calls for it. Check the repo's README before you run it.
Files
OpenSEO Keyword Clustering
Goal
Group keywords into page-level clusters and decide which existing or new page should target each cluster. This is a keyword mapping workflow, not just a semantic grouping exercise.
Required inputs
projectId- A keyword list, saved keyword tag, seed topic, or target domain
- Optional existing URLs/pages to map against
If keywords are not provided, use list_saved_keywords for saved sets, research_keywords for seed discovery, or get_ranked_keywords when the user starts from a target domain.
Project context
The project-context tools are free and shared with the app and other agents.
- Call
get_project_contextfirst and ground the mapping in it — the saved key pages are the existing pages clusters should map to, and the business and goal decide which clusters are worth targeting. - This skill needs key pages. If none are saved, run a minimal inline setup: ask the user for the pages that matter, or propose a shortlist from the site, an audit, or Search Console and confirm it, write it back with
update_project_context(addKeyPages), then continue the clustering. Never front-load the full interview; suggestseo-project-setupat the end for the rest. - Before spending credits, check the research log. If the same research ran within the last 30 days, reuse that result and say so instead of re-buying it.
- On finish, write back what is durable with
update_project_context— new or correctedaddKeyPagesentries with the topic each page now targets — and append a research log entry:{ appendResearchLog: { summary: "Keyword clustering: <keyword set>. Verdict: <conclusion>" } }.
Deliver as a report
Deliver through the seo-report skill, saving with skill: "keyword-clustering". If that skill is not available, say so and stop before writing HTML.
OpenSEO MCP tools
list_saved_keywords: fetch an existing keyword set, optionally filtered by tags.research_keywords: expand a seed when the user starts from a topic.get_ranked_keywords: gather exact ranking keywords and URLs when the user starts from a domain or page.get_search_console_performance: when Search Console is connected, pull real queries withdimensions: ["query","page"]to map terms to the pages already earning impressions and to surface cannibalization (one query splitting clicks across multiple URLs).get_serp_results: validate whether keywords belong on the same page by checking SERP overlap and intent.get_local_serp_results: use for local SEO clusters when Maps/local-pack intent should affect page mapping.save_keywords: optionally tag final clusters after user confirmation.
Workflow
- Gather the candidate keyword set.
- Use
get_search_console_performance(dimensions["query","page"]) when Search Console is connected to start from real queries and the pages already ranking for them. - Use
get_ranked_keywordsfor domain/page-driven clustering. - Use
search_local_businessesandget_local_serp_resultswhen proximity, local packs, or Google Business results determine whether terms belong on location pages.
- Use
- Remove duplicates, irrelevant terms, and terms that clearly require a different product or audience.
- Build clusters around intent and page type:
- Same SERP intent and similar ranking pages belong together.
- Different intent, buyer stage, or SERP format should be split.
- Similar words do not guarantee the same cluster.
- For important borderline terms, use a small
get_serp_resultsbatch to check overlap. - Assign each cluster to:
- Existing URL, if supplied and appropriate
- New page recommendation, if no existing page fits
- Do-not-target / later bucket, if weak or off-strategy
- Identify cannibalization risk when multiple pages would target the same intent. When Search Console is connected, confirm it from real data with
get_search_console_performance(dimensions: ["query","page"]) — the same query sending impressions to multiple URLs. - Ask before applying cluster tags with
save_keywords.
Output format
h1: the site or keyword set.
If a report template applies (see seo-report), its sections and tone replace this list.
Sections in this order:
- The map — one or two opening sentences: how many clusters, how many pages to create, how many to update, and any cannibalization found.
- Clusters — a table of cluster, primary keyword, intent, target page, and priority. Keep secondary keywords in the per-cluster briefs, not in this table.
- Page briefs — one finding per cluster: the page type and the searcher's problem, then the page to create or update. List required sections and internal links underneath.
- Cannibalization — a table of the query, the competing URLs, and which one to keep, only when there is real evidence for it.
- What to do next — an ordered list, including the tag suggestions and the explicit ask before applying them.
- How this report was made — opens with the skill link line from
seo-report, pointing athttps://openseo.so/docs/skills/keyword-clustering("OpenSEO Keyword Clustering skill"), then where the keywords came from, and a note labelling target pages as proposed when no URL data was supplied.
Guardrails
- Do not over-cluster tiny keyword sets. If there are fewer than 10 usable terms, produce a simple map.
- Do not rely on lexical similarity alone. SERP intent wins.
- Do not replace tags broadly without explicit confirmation.
- If existing URL data is missing, label target pages as proposed.
Facts
- Kind
- Skill
- Repo
- every-app/open-seo
- Group
- Uncategorized
- Installs
- 5.9k
- Stars
- 23.2K
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