sv-core-analysis

sv-core-analysis is a skill for Claude Code, Codex from seovendorco/sv-mcp-skills. It costs 59 tokens per session (393 once invoked), scanned A, original, MIT.

An element-by-element check of a web page's search-engine optimisation, compared with pages that rank highly for a chosen search term. It reviews items such as loading speed, titles, headings, indexing, and site access files.

In plain words
What is it for?
Use it to benchmark a drafted or published page against top-ranking pages and find changes to make before or after publishing.
Why use it?
It replaces a scattered manual review with one report showing technical issues, page structure, keyword use, and competing results. SEO means improving a page so search engines can understand and rank it.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to benchmark a drafted or published page against top-ranking pages and find changes to make before or after publishing.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/seovendorco/sv-mcp-skills/sv-core-analysis
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add seovendorco/sv-mcp-skills --skill sv-core-analysis
Clone the repo
git clone --depth 1 https://github.com/seovendorco/sv-mcp-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for sv-core-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/seovendorco/sv-mcp-skills/sv-core-analysis/github.svg)](https://agentmods.dev/skills/seovendorco/sv-mcp-skills/sv-core-analysis)
Your own site
<a href="https://agentmods.dev/skills/seovendorco/sv-mcp-skills/sv-core-analysis"><img src="https://agentmods.dev/badge/skills/seovendorco/sv-mcp-skills/sv-core-analysis/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for sv-core-analysis

Your own site · 80×15
<a href="https://agentmods.dev/skills/seovendorco/sv-mcp-skills/sv-core-analysis"><img src="https://agentmods.dev/badge/skills/seovendorco/sv-mcp-skills/sv-core-analysis.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 393 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00059 $0.00393
Opus 5.5 $0.00024 $0.00157
Sonnet 5.5 $0.00012 $0.00079
Haiku 4.5 $0.00006 $0.00039

Measured today against content hash 0ef8d5f461d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sv-core-analysis scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/sv-core-analysis/SKILL.md · 42 lines

What it actually says

SV CORE Analysis: core-analysis

MCP tool: core-analysis · Mode: synchronous API reference: CORE Analysis

When to use this

Use after content is drafted or published, to benchmark it against the current top-ranked pages for a keyword. For a single overall health score use sv-preliminary-audit instead.

Parameters

Parameter Required Notes
url no Website URL, max 300 characters.
keyword no Max 100 characters.

Neither is marked required in the schema, but a useful analysis needs both.

Example call

{ "url": "https://example.com/white-label-seo", "keyword": "white label seo" }

Result

A dense, nested report: HTTP status and load speed, URL and SSL checks, a keyword uniqueness score, the title, meta description and heading structure with counts and term frequency, indexing, sitemap and robots.txt status, and the top-ranked sites for the keyword.

Chaining

Pairs with sv-top-competitors (who to benchmark against) and usually runs after sv-prose to check a fresh draft before publishing.

Gotchas

  • This is the deepest result in the set. When summarizing for a person, pull out the scores and the top-ranked sites that drive a decision, and do not dump the raw structure.
  • An empty call returns an error or a near-empty report.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today First seen · 42 lines · 59 tokens per session scan A 0ef8d5f461d5

Subscribe to this mod's changes

sv-core-analysis is a skill published in the GitHub repository seovendorco/sv-mcp-skills (2 stars, last pushed yesterday), licensed MIT. It adds 59 tokens to every session and 393 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-16.

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