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 VKirill/claude-lane-stack --skill yandex-webmastergit clone --depth 1 https://github.com/VKirill/claude-lane-stackWrote 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/vkirill/claude-lane-stack/yandex-webmaster)<a href="https://agentmods.dev/skills/vkirill/claude-lane-stack/yandex-webmaster"><img src="https://agentmods.dev/badge/skills/vkirill/claude-lane-stack/yandex-webmaster/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/vkirill/claude-lane-stack/yandex-webmaster"><img src="https://agentmods.dev/badge/skills/vkirill/claude-lane-stack/yandex-webmaster.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Tool Misuse · line 95 Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
- medium Data Exfiltration · line 53 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Excessive Agency · line 189 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00180 | $0.05295 |
| Opus 5 | $0.00090 | $0.02648 |
| Sonnet 5 | $0.00036 | $0.01059 |
| Haiku 4.5 | $0.00018 | $0.00530 |
Grade A, and why
yandex-webmaster scanned grade A with 1 finding 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 4d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
> Full step-by-step API interaction: **[references/workflow.md](references/workflow.md)** — bootstrap, host verification, sitemap submission, search analytics, indexing & recrawl, diagnostics, links, daily ETL pattern. E How it starts
The opening of the file, as written. The whole thing — 249 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Usage
Loaded automatically when the description matches the active task. Read only the section you need, then follow the link to the relevant reference file.
Use this skill when
- Pulling search query stats (shows, clicks, avg position, CTR) —
search-queries/popularorsearch-queries/all/history - Monitoring indexing dynamics —
indexing/history,indexing/samples,indexing/insearch/history - Submitting URLs to recrawl with daily-quota awareness —
POST recrawl/queue+GET recrawl/quota - Managing sitemaps: list, add user sitemaps, track processing errors —
sitemaps,user-added-sitemaps - Site diagnostics with severity (FATAL/CRITICAL/POSSIBLE_PROBLEM/RECOMMENDATION) —
diagnostics - External/internal link audit —
links/external/samples,links/internal/samples - Host ownership verification (DNS, HTML_FILE, META_TAG, TXT_FILE) —
verification - SQI history, search events (pages added/removed) —
sqi-history,search-events - Building a Python (
httpx) / Node.js (undici) OAuth client with refresh-token,task_idpersistence, recrawl daily quota - Registering an OAuth app on
oauth.yandex.comand obtaining a long-lived token
Do not use this skill when
- Wordstat / general phrase frequency — Webmaster reports shows that already happened on your site, not query volume. Use
mutagen(cascade) - Generic SERP position tracking for arbitrary keywords — Webmaster only covers verified hosts. Use
xmlstock(cascade) - Google Search Console / Bing Webmaster — different provider. Use
google-search-console(cascade) - Yandex.Metrica (behavior, traffic sources, conversions) — separate product. Use
yandex-metrica(cascade) - Yandex.Direct (ad campaigns, bids, budgets) — separate API. Use
yandex-direct(cascade) - Custom SERP scraping bypassing the API —
xmlstockor your own scraper viaproxy6 - Downstream runtime (HTTP client, DB, cache) — use
httpx,nodejs,postgresql,redis
What ships with it
11 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.
- references/cookbook.md 15 KB
- references/diagnostics.md 3.8 KB
- references/errors.md 5.1 KB
- references/hosts-and-sitemaps.md 5.2 KB
- references/indexing.md 6.4 KB
- references/integration.md 18 KB
- references/links.md 3.3 KB
- references/rate-limits.md 4.7 KB
- references/search-queries.md 5.1 KB
- references/setup.md 4.5 KB
- references/workflow.md 15 KB
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.
- 4d ago First seen · 249 lines · 180 tokens per session scan A 12bb5c5e7e3c
yandex-webmaster is a skill published in the GitHub repository VKirill/claude-lane-stack (115 stars, last pushed today), licensed MIT. It adds 180 tokens to every session and 5,295 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.
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