Borrowing it
Nothing to install: this file belongs to shashankswe2020-ux/backend-pro-max-skill. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/shashankswe2020-ux/backend-pro-max-skill/main/.claude/skills/backend-pro-max/SKILL.mdgit clone --depth 1 https://github.com/shashankswe2020-ux/backend-pro-max-skillWrote 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/shashankswe2020-ux/backend-pro-max-skill/backend-pro-max)<a href="https://agentmods.dev/skills/shashankswe2020-ux/backend-pro-max-skill/backend-pro-max"><img src="https://agentmods.dev/badge/skills/shashankswe2020-ux/backend-pro-max-skill/backend-pro-max/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/shashankswe2020-ux/backend-pro-max-skill/backend-pro-max"><img src="https://agentmods.dev/badge/skills/shashankswe2020-ux/backend-pro-max-skill/backend-pro-max.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 | $0.00072 | $0.00391 |
| Opus 5 | $0.00036 | $0.00196 |
| Sonnet 5 | $0.00014 | $0.00078 |
| Haiku 4.5 | $0.00007 | $0.00039 |
Grade A, and why
backend-pro-max 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 11d 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.
What it actually says
Backend Pro Max
Use this skill whenever the user asks about backend, cloud, or distributed-systems engineering — choosing a language / database / broker, designing an API, sizing a cache, planning multi-region, debugging tail latency, hardening security, defining SLOs, etc.
Search
python3 src/backend-pro-max/scripts/search.py "<query>" [--domain <domain>] [--stack <stack>] [-n N]
python3 src/backend-pro-max/scripts/search.py "<query>" --all
python3 src/backend-pro-max/scripts/search.py --list
Working principles
- Run a
--stack <stack>query first if the user has named a language / framework. The stack CSV contains the strict guidelines for that ecosystem (concurrency, errors, build, testing, …) — follow them. - Then run a
--domain <domain>query to pull the right architectural pattern, infra component, or operational practice. - Be explicit about consistency, idempotency, retries, timeouts, and failure handling in any code or design you produce.
- Default to managed services unless there is a concrete reason to self-host.
- Wire observability and security from the start — never bolt on later.
See src/backend-pro-max/templates/base/quick-reference.md for the full
domain/stack catalogue and example queries.
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.
- 11d ago First seen · 41 lines · 72 tokens per session scan A 6c45c853d443
backend-pro-max is a skill published in the GitHub repository shashankswe2020-ux/backend-pro-max-skill (5 stars, last pushed 4mo ago), licensed MIT. It adds 72 tokens to every session and 391 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 2026-08-31.
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