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Semantic topic cluster planning and automated execution engine for claude-blog. Performs SERP-based keyword research, groups keywords by search intent and SERP overlap, builds a hub-and-spoke cluster architecture, generates an interactive SVG cluster map, and executes the full cluster by orchestrating blog-write calls with shared cluster context and automatic internal-link injection. Fills the strategy-to-execution gap: blog-strategy plans the blueprint, blog-cluster builds the house.
Passed 18 of 24 test cases with the skill, and 6 of 24 without it.
and 16 more in the full report
12 fixed7 passed either way7 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
A newer attempt on gemini-3.8-flash on 10/19/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.
One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.
A user runs a cluster plan command while WebSearch tool access is disabled or unavailable. How should the plan phase respond?
| Checked | Without skill | With skill |
|---|---|---|
| Produces a draft plan marked for user confirmation or imported SERP data. | Missed | Passed |
| Requires user approval or explicit keyword input before proceeding to execution. | Missed | Passed |
The instructions your model reads when the skill loads.
Bundled paths below use host Markdown substitution of ${CLAUDE_SKILL_DIR};
it is not an exported shell variable. Resolve them before execution, quote
paths, and refuse nonabsolute overrides. Pass blog_reference_root resolved
from ${CLAUDE_SKILL_DIR}/../blog/references, blog_template_root from
${CLAUDE_SKILL_DIR}/../blog/templates, and needed sibling roots to agents.
Read the main reference orchestration-details.md before loading project
context; pass only its helper-fenced output to downstream agents.
Plans and executes entire interlinked content ecosystems from a single seed keyword. Three layers: Semantic Clustering (the brain), Cluster Architecture (the structure), and Execution Engine (the machine).
Adapted from the semantic-cluster-engine submission by Lutfiya Miller (winner, AI Marketing Hub Pro Challenge, March 2026, 95/100 Exemplary). Original repository: no longer available as of 2026-10-12 This port keeps the Plan + Execute architecture and the cluster context innovation, removes brand-specific (ScienceExperts.ai) styling and image prompts, and routes through claude-blog's existing sub-skills.
| Command | What it does |
|---|---|
/blog cluster | Interactive. Asks whether to plan or execute. |
/blog cluster plan <seed-keyword> | SERP-based semantic analysis. Outputs cluster plan + map. |
/blog cluster plan --from strategy [path] | Imports existing blog-strategy cluster build plan and validates against SERP data. |
/blog cluster execute [path-to-plan] | Sequential blog-write calls with cluster context and auto-interlinks. |
${CLAUDE_SKILL_DIR}/references/semantic-clustering.md (SERP overlap analysis, intent classification, keyword universe expansion)${CLAUDE_SKILL_DIR}/references/cluster-architecture.md (hub-and-spoke specs, schema strategy, link-density rules)${CLAUDE_SKILL_DIR}/references/execution-workflow.md (execution order, context injection, scorecard, failure handling)| Skill | When this skill calls it |
|---|
test cases passed, vs 6 / 24 without
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