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 kostja94/marketing-skills --skill link-buildinggit clone --depth 1 https://github.com/kostja94/marketing-skillsWrote 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/kostja94/marketing-skills/link-building)<a href="https://agentmods.dev/skills/kostja94/marketing-skills/link-building"><img src="https://agentmods.dev/badge/skills/kostja94/marketing-skills/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/kostja94/marketing-skills/link-building"><img src="https://agentmods.dev/badge/skills/kostja94/marketing-skills/link-building.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00085 | $0.00933 |
| Opus 5 | $0.00043 | $0.00466 |
| Sonnet 5 | $0.00017 | $0.00187 |
| Haiku 4.5 | $0.00009 | $0.00093 |
Grade A, and why
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 8d 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- link-building — 100% identical, 0 lines differ
- link-building — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SEO Off-Page: Link Building
Guides link building strategy: acquiring quality backlinks to improve domain authority and rankings.
When invoking: On first use, if helpful, open with 1-2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.
Scope (Off-Page SEO)
- Link building: Acquire backlinks from relevant, authoritative sites
- Broken link building: Find broken links on others' sites; suggest your content as replacement
- Unlinked brand mentions: Turn mentions into links via outreach
- Guest posting: Contribute to relevant publications; earn links
- Journalist requests: Respond to #JournoRequest; provide quotes/assets
- Digital PR: PR campaigns for backlinks and E-E-A-T — see eeat-signals
Initial Assessment
Check for project context first: If .claude/project-context.md or .cursor/project-context.md exists, read it for product, audience, and proof points.
Identify:
- Current backlink profile: Domain authority, referring domains
- Target keywords: What to rank for
- Linkable assets: Research, tools, guides, data, testimonials
Link Building Strategies
| Strategy | Description |
|---|---|
| Content marketing | Create link-worthy content (guides, research, tools) |
| Guest posting | Write for relevant sites with author bio link |
| Broken link building | Find broken links, suggest your content as replacement |
| Unlinked brand mentions | Turn mentions into links via outreach |
| Journalist requests | Respond to #JournoRequest; provide quotes/assets |
| Directory and curated list submission | Get listed on directories (Taaft, Product Hunt, G2) and curated "best-of" lists; cold-start channel—see directory-submission for submission workflow, cold-start-strategy for launch plan |
| Digital PR | Press releases, news, expert quotes; earn authoritative links at scale |
| Partnerships | Partner links, co-marketing |
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.
- 8d ago First seen · 79 lines · 85 tokens per session scan A 63afbad4ab65
link-building is a skill published in the GitHub repository kostja94/marketing-skills (963 stars, last pushed 3mo ago), licensed MIT. It adds 85 tokens to every session and 933 once invoked, about $0.0004 per session on Opus 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.
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