Agent skill

Link Building

by kostja94 in kostja94/marketing-skills

When the user wants to build backlinks, acquire links, or improve off-page SEO.

MITAuto-check passedMarketing & SEO

Install Link Building

skills CLI
$ npx skills add kostja94/marketing-skills --skill link-building -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install kostja94/marketing-skills link-building --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/kostja94/marketing-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/seo/off-page/link-building .claude/skills/link-building && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
link-building
GitHub stars
1k
Token cost
~1k tokens
SKILL.md length
442 words
Files
1
Skills in repo
102
Repo updated
First seen
Licence
MIT

At a glance

When the user wants to build backlinks, acquire links, or improve off-page SEO.

  • Works in 3 steps: Current backlink profile: Domain… → Target keywords: What to rank for → Linkable assets: Research, tools,…
  • Wants to build backlinks
  • SKILL.md covers Scope (Off-Page SEO), Initial Assessment, Link Building Strategies and Quality Over Quantity, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Link Building is an agent skill from kostja94/marketing-skills. When the user wants to build backlinks, acquire links, or improve off-page SEO. Also use when the user mentions "link building," "backlinks," "off-page SEO," "link acquisition," "outreach," "guest posting," "broken link building," "link outreach," "acquire backlinks," "how to build backlinks," or "link building strategy." For profile audit, use backlink-analysis.

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Marketing & SEO, covering Link building. The repository describes itself as: Agent Skills for Marketing — SEO, Social, Influencer & More. 160+ open-source skills for SEO, content, 40+ page types, paid ads, channels, and strategies. Add project context… The licence is MIT.

When your agent uses it

  • Wants to build backlinks
  • Improve off-page SEO
  • The user mentions link building
  • Link acquisition

Example prompts

  • “link building,”
  • “backlinks,”
  • “off-page SEO,”
  • “/link-building”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Current backlink profile: Domain authority, referring domains
  2. Target keywords: What to rank for
  3. Linkable assets: Research, tools, guides, data, testimonials

What it can do on your machine

Read from SKILL.md and the folder at commit 8dd89c5. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Link Building loads about 1k tokens when it runs. Until then it costs about 95 tokens; SKILL.md has 442 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~95
When it runs · the whole SKILL.md, loaded when a task matches
~1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from kostja94/marketing-skills at commit 8dd89c5, republished under its MIT licence (© kostja94). 442 words, ~1,040 tokens.

Download SKILL.mdSave it as .claude/skills/link-building/SKILL.md (or your agent's skills folder).
name
link-building
description
When the user wants to build backlinks, acquire links, or improve off-page SEO. Also use when the user mentions "link building," "backlinks," "off-page SEO," "link acquisition," "outreach," "guest posting," "broken link building," "link outreach," "acquire backlinks," "how to build backlinks," or "link building strategy." For profile audit, use backlink-analysis.
metadata.version
1.0.1

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

Project context: Read root contextus.md when present and load only the modules relevant to this task. Without Contextus, use available project material or user-provided facts and ask for missing information; do not create a parallel context system.

Identify:

  1. Current backlink profile: Domain authority, referring domains
  2. Target keywords: What to rank for
  3. Linkable assets: Research, tools, guides, data, testimonials
StrategyDescription
Content marketingCreate link-worthy content (guides, research, tools)
Guest postingWrite for relevant sites with author bio link
Broken link buildingFind broken links, suggest your content as replacement
Unlinked brand mentionsTurn mentions into links via outreach
Journalist requestsRespond to #JournoRequest; provide quotes/assets
Directory and curated list submissionGet 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 PRPress releases, news, expert quotes; earn authoritative links at scale
PartnershipsPartner links, co-marketing
Show full SKILL.md (169 more words)Show less

Quality Over Quantity

FactorGoodAvoid
RelevanceLinks from related sitesIrrelevant niches
AuthorityHigh-quality, trusted sitesSpammy, low-quality
Anchor textNatural, variedOver-optimized, exact match
ContextEditorial, contextual linksFooter, sidebar link farms

Outreach Best Practices

  • Personalize each outreach message
  • Offer value (content, data, quote) before asking for link
  • Follow up politely; don't spam
  • Track outreach in spreadsheet or tool

Output Format

  • Linkable asset ideas
  • Outreach strategy and templates
  • Target sites (types, not specific URLs)
  • Metrics to track (referring domains, DA, traffic)
  • seo-strategy: SEO workflow; link building is Off-Page phase
  • backlink-analysis: Analyze current backlink profile
  • content-strategy: Content strategy supports link building
  • keyword-research: Target keywords inform link targets
  • cold-start-strategy: Cold start and first-user acquisition; directory submission as part of launch
  • parasite-seo: Parasite SEO; high-authority platforms for backlinks
  • github: GitHub repos, gists, awesome lists for backlinks
  • directory-submission: Directory and curated list submission--preparation, platform-specific copy, Taaft/Product Hunt/G2; use when user wants to submit product to directories or get listed on best-of roundups
  • eeat-signals: E-E-A-T implementation; Digital PR supports authority

© kostja94, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/seo/off-page/link-building of kostja94/marketing-skills.

Open the folder on GitHubat commit 8dd89c5

Compare with similar skills

Link Building next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Link Building compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Link Building this skillkostja94/marketing-skills1k—~1kAutomated safety check: PassMIT
FLOW SEO FrameworkAgriciDaniel/claude-seo19k2 repos~1.4kAutomated safety check: PassMIT
SEO DataforseoAgriciDaniel/codex-seo7972 repos~4.6kAutomated safety check: PassMIT
Backlink CheckRyze-AI-Adgent/open-seo-mcp-skills4.6k—~515Automated safety check: PassMIT
Beyondseobeyondtahir/beyondseo161—~4.3kAutomated safety check: PassMIT
Webobsidianxnohat/webobsidian268—~2.1kAutomated safety check: PassMIT

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Categories

Questions about Link Building

What does Link Building do?

When the user wants to build backlinks, acquire links, or improve off-page SEO. Link Building is an agent skill from kostja94/marketing-skills. When the user wants to build backlinks, acquire links, or improve off-page SEO.

When should I use Link Building?

Link Building fits situations like: wants to build backlinks; improve off-page SEO; the user mentions link building; link acquisition.

How do I install Link Building in Claude Code?

Run `npx skills add kostja94/marketing-skills --skill link-building -a claude-code`. Or copy the skill folder (skills/seo/off-page/link-building in kostja94/marketing-skills) into .claude/skills/link-building in your project. Claude Code loads it when a task matches its description.

How do I install Link Building in Codex?

Run `npx skills add kostja94/marketing-skills --skill link-building -a codex`. Or copy the skill folder (skills/seo/off-page/link-building in kostja94/marketing-skills) into .agents/skills/link-building in your project. Codex loads it when a task matches its description.

Can I use Link Building in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add kostja94/marketing-skills --skill link-building -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/link-building, .gemini/skills/link-building, .github/skills/link-building and .opencode/skills/link-building in your project.

What does Link Building need to run?

SKILL.md names no scripts, command-line tools or credentials: Link Building is instructions for the agent only.

Does Link Building access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Link Building safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Link Building use?

Link Building is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Link Building use?

About 1k tokens (SKILL.md is roughly 4.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Link Building?

Skills that share tags, products or a category with Link Building: FLOW SEO Framework (AgriciDaniel/claude-seo, 19k stars), SEO Dataforseo (AgriciDaniel/codex-seo, 797 stars), Backlink Check (Ryze-AI-Adgent/open-seo-mcp-skills, 4.6k stars) and Beyondseo (beyondtahir/beyondseo, 161 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Link Building?

kostja94 (a GitHub user) maintains it in kostja94/marketing-skills, which has 1,025 GitHub stars. The repository holds 102 skills in this directory. The repository was last updated on October 6, 2026.

Source: kostja94/marketing-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.