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 alexprivalov/boost-asio-skill --skill boost-asio-progit clone --depth 1 https://github.com/alexprivalov/boost-asio-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/alexprivalov/boost-asio-skill/boost-asio-pro)<a href="https://agentmods.dev/skills/alexprivalov/boost-asio-skill/boost-asio-pro"><img src="https://agentmods.dev/badge/skills/alexprivalov/boost-asio-skill/boost-asio-pro/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/alexprivalov/boost-asio-skill/boost-asio-pro"><img src="https://agentmods.dev/badge/skills/alexprivalov/boost-asio-skill/boost-asio-pro.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 | $0.00103 | $0.02605 |
| Opus 5 | $0.00051 | $0.01303 |
| Sonnet 5 | $0.00021 | $0.00521 |
| Haiku 4.5 | $0.00010 | $0.00261 |
Grade A, and why
boost-asio-pro 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 — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Boost.Asio / standalone Asio
Write async C++ networking code that compiles on the user's Boost, not the newest one. Asio's API changed shape three times (classic io_service → io_context → C++20 coroutines) and most Asio code on the internet is from the first era, so pick the style from the toolchain first, then follow that style's reference file.
References: Boost.Asio · standalone Asio
Step 1: pick the style (do this before writing code)
Determine the Boost (or Asio) version and the C++ standard actually in use — find_package(Boost) output, dpkg -l libboost-dev, brew info boost, CMAKE_CXX_STANDARD, or ask. Do not assume the newest.
| Boost | C++ std | Style | Read |
|---|---|---|---|
| ≥ 1.77 | C++20 | Coroutines (co_await + awaitable<T>) — preferred |
references/coroutines.md |
| ≥ 1.74 | C++11–17 | Completion handlers (callbacks) — the portable baseline | references/pre-cpp20.md |
| ≥ 1.80 | C++11–17 | Stackful asio::spawn + yield_context (links Boost.Coroutine — not header-only) |
references/pre-cpp20.md |
| 1.62–1.65 | C++11 | Classic io_service / strand.wrap / expires_from_now |
references/classic-boost.md |
SSL/TLS in any style: references/ssl.md. CMake for any style: references/build.md.
io_context, make_strand, bind_executor, steady_timer, signal_set, async_read/async_write/async_read_until, buffers and resolver are library features — identical in the coroutine and callback styles. Only the suspension mechanism differs.
Step 2: version floors (verified by compiling, not from docs)
Reach for one of these and the build breaks on older distros:
| Feature | Floor |
|---|---|
experimental/awaitable_operators.hpp (the || / && operators) |
Boost ≥ 1.77 / Asio ≥ 1.20 |
as_tuple completion token |
Boost ≥ 1.79 / Asio ≥ 1.21 |
co_composed (custom composed ops) |
Boost ≥ 1.85 / Asio ≥ 1.30 |
3-arg asio::spawn(ex, fn, token) |
Boost ≥ 1.80 (older Boost has only spawn(ex, fn)) |
any_io_executor (strand<any_io_executor>, tcp::socket's default executor) |
Boost ≥ 1.74 — the floor for the callback style; below it, use legacy io_context::strand |
io_context, make_strand, expires_after |
Boost ≥ 1.66 — below it, classic io_service |
What ships with it
5 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 · 137 lines · 103 tokens per session scan A 1c3f7d17ce28
boost-asio-pro is a skill published in the GitHub repository alexprivalov/boost-asio-skill (1 stars, last pushed 17d ago), licensed MIT. It adds 103 tokens to every session and 2,605 once invoked, about $0.0005 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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