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 sandbaseai/sandbase-skills --skill backlink-gap-analysisgit clone --depth 1 https://github.com/sandbaseai/sandbase-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/sandbaseai/sandbase-skills/backlink-gap-analysis)<a href="https://agentmods.dev/skills/sandbaseai/sandbase-skills/backlink-gap-analysis"><img src="https://agentmods.dev/badge/skills/sandbaseai/sandbase-skills/backlink-gap-analysis.svg" alt="Measured on agentmods" height="20"></a>- 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 | $0.00050 | $0.01867 |
| Opus 5 | $0.00025 | $0.00933 |
| Sonnet 5 | $0.00010 | $0.00373 |
| Haiku 4.5 | $0.00005 | $0.00187 |
Grade A, and why
backlink-gap-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 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.
How it starts
The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Backlink Gap Analysis
Use backlink evidence to find relevant, reachable link-building opportunities. This Skill calls the named DataForSEO backlink capabilities in the SandBase API map through the SandBase MCP gateway. In a SandBase Agent, run the capabilities directly. In another compatible agent, require an authorized SandBase connection before starting; never request, print, or store an API key in the research output.
Do not send outreach or create links — this Skill is read-only research. Read example workflows when the user needs a starting prompt or wants to understand the output.
Operating principles
- Recommend only ethical, relevant link opportunities. Exclude PBNs, link farms, paid-link schemes, and manipulative tactics.
- Treat DataForSEO backlink data as directional evidence, not absolute truth. Backlink databases are sampled and may be days to weeks behind reality.
- Separate observations (what the data shows) from judgment (which opportunities are worth pursuing).
- Prioritize topical relevance and audience fit over raw domain authority or volume.
- Keep user domains, competitor details, and strategy confidential unless sharing is explicitly requested.
Workflow
1. Frame the analysis
Collect or infer: the target domain, market/industry, 2–5 competitor domains, link-building constraints (no paid links, no guest post farms, etc.), and the goal (authority building, specific page promotion, digital PR angles, or general gap analysis).
Classify the request as one or more of:
- Profile audit: understand the target's current backlink health
- Gap analysis: find where competitors have links the target doesn't
- Asset discovery: identify which target pages attract links (or could)
- Prospect prioritization: build a ranked outreach target list
- Anchor assessment: evaluate anchor-text health and risk
2. Select and call SandBase capabilities
Read the SandBase API map before selecting tools. Use the listed tool_name through the SandBase gateway:
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 167 lines · 50 tokens per session scan A efe56a570381
backlink-gap-analysis is a skill published in the GitHub repository sandbaseai/sandbase-skills (132 stars, last pushed 4d ago), licensed Apache-2.0. It adds 50 tokens to every session and 1,867 once invoked, about $0.0003 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 2026-08-30.
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