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.
npx skills add brainbytes-dev/everything-claude-marketing --skill seo-link-buildinggit clone --depth 1 https://github.com/brainbytes-dev/everything-claude-marketingWrote 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.
[](https://agentmods.dev/skills/brainbytes-dev/everything-claude-marketing/seo-link-building)<a href="https://agentmods.dev/skills/brainbytes-dev/everything-claude-marketing/seo-link-building"><img src="https://agentmods.dev/badge/skills/brainbytes-dev/everything-claude-marketing/seo-link-building/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.
<a href="https://agentmods.dev/skills/brainbytes-dev/everything-claude-marketing/seo-link-building"><img src="https://agentmods.dev/badge/skills/brainbytes-dev/everything-claude-marketing/seo-link-building.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00023 | $0.02846 |
| Opus 5.5 | $0.00009 | $0.01138 |
| Sonnet 5.5 | $0.00005 | $0.00569 |
| Haiku 4.5 | $0.00002 | $0.00285 |
Grade A, and why
seo-link-building 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 2mo ago.
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.
How it starts
The opening of the file, as written. The whole thing — 323 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SEO Link Building
When to Activate
Use this skill when developing an off-page SEO strategy, planning link-building campaigns, evaluating backlink quality, creating linkable assets, or diagnosing why a site isn't ranking despite having strong on-page SEO. Backlinks remain one of the top 3 ranking factors.
First Questions
- What is the site's current domain rating and backlink profile?
- What are the target keywords and which pages need link support?
- What linkable assets exist or could be created? (data, tools, research, guides)
- What is the budget and team capacity? (link building is labor-intensive)
- What industry is this in? (different industries have different link building opportunities)
- What's the competitive backlink landscape? (how many links do top-ranking pages have?)
Link Quality Assessment
Not all backlinks are equal. A single high-quality link can outweigh hundreds of low-quality ones.
High-Quality Link Signals
- Relevance: The linking site is topically related to yours
- Authority: The linking domain has a high DR/DA (50+)
- Editorial: The link was earned because of content quality, not paid for or exchanged
- Contextual: The link appears within the body content, not in a sidebar, footer, or author bio
- DoFollow: Passes PageRank (nofollow, sponsored, and UGC links have limited SEO value)
- Unique domain: Links from unique domains matter more than multiple links from the same domain
- Traffic: The linking page receives organic traffic (indicates Google trusts it)
Red Flags (Low-Quality / Toxic Links)
- Links from irrelevant sites (casino links to a SaaS blog)
- Links from link farms or PBNs (private blog networks)
- Paid links without
rel="sponsored"(violates Google guidelines) - Links from pages with hundreds of outbound links
- Links from hacked or compromised sites
- Sitewide links (footer, sidebar) from irrelevant domains
- Exact-match anchor text from many sources (looks manipulative)
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.
- 2mo ago First seen · 323 lines · 23 tokens per session scan A 55cb833ca589
seo-link-building is a skill published in the GitHub repository brainbytes-dev/everything-claude-marketing (10 stars, last pushed 7mo ago), licensed MIT. It adds 23 tokens to every session and 2,846 once invoked, about $0.0001 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 2026-09-03.
seo-link-building compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| seo-link-buildingbrainbytes-dev/everything-claude-marketing | Skill | 10 | 7mo ago | MIT | A | 23 | Claude Code |
| imagegenopenai/codex | Skill | 133k | yesterday | Apache-2.0 | A | 113 | Codex |
| playwright-climicrosoft/playwright | Skill | 99k | yesterday | Apache-2.0 | A | 19 | Claude Code |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | 4d ago | MIT | A | 200 | Claude Code, Codex |
| systematic-debuggingobra/superpowers | Skill | 313k | 3d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | yesterday | MIT | A | 95 | Claude Code |
| next-partial-prefetching-adoptionvercel/next.js | Skill | 143k | yesterday | MIT | A | 103 | Claude Code |