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 dimetron/pi-go --skill go-127git clone --depth 1 https://github.com/dimetron/pi-goWrote 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/dimetron/pi-go/go-127)<a href="https://agentmods.dev/skills/dimetron/pi-go/go-127"><img src="https://agentmods.dev/badge/skills/dimetron/pi-go/go-127.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
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 →
- medium analysis-evasion · line 1 Suspicious Unicode normalization or mixed-script contentFix: Review the flagged content for security risks. Ensure no credentials, secrets, or sensitive data are exposed.
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 | $0.00177 | $0.06865 |
| Opus 5 | $0.00088 | $0.03432 |
| Sonnet 5 | $0.00035 | $0.01373 |
| Haiku 4.5 | $0.00018 | $0.00686 |
Grade A, and why
go-127 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 — 510 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Go 1.27 — What Changed and What To Do About It
Released: August 2026, six months after Go 1.26. Go 1 compatibility holds; almost all programs compile and run unchanged.
Sources: go.dev/doc/go1.27 (authoritative) ·
victoriametrics.com/blog/go-1-27 (worked examples).
Every claim below is from one of those two, or from reading
$(go env GOROOT)/src on the installed 1.27.0 toolchain.
Companion skill: code-guidelines-go holds the standing style rules. This skill holds
only what 1.27 changed.
0. Read this first — GOEXPERIMENT=none is set on this machine
go env on this host persists GOEXPERIMENT=none, which does not mean "no extra
experiments" — it clears the 1.27 baseline, which enables JSONv2, GreenTeaGC,
SizeSpecializedMalloc, Dwarf5 and RandomizedHeapBase64
(src/internal/buildcfg/exp.go:81). Verified consequences here:
$ go build ./... # importing encoding/json/v2
imports encoding/json/v2: build constraints exclude all Go files in .../encoding/json/v2
$ golangci-lint --version
golangci-lint has version 2.13.1 built with go1.27.0-X:nojsonv2,nogreenteagc,
norandomizedheapbase64,nosizespecializedmalloc
So on this machine encoding/json/v2 will not import, and the 1.27 allocator and GC
work are switched off. Before benchmarking anything or trying a v2 snippet:
go env GOEXPERIMENT # prints "none" -> baseline is cleared
go env -u GOEXPERIMENT # restore the default baseline (user decision — ask first)
GOEXPERIMENT=jsonv2 go build ./... # or scope it to one command
Do not silently change the user's go env config. Flag it, and scope the experiment to
the command you are running.
1. Language changes
1.1 Generic methods — methods may declare their own type parameters
The headline change. Before 1.27 a generic operation on a type had to be a package-level function; now it can live on the type.
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 · 510 lines · 177 tokens per session scan A c025e8a2baaf
go-127 is a skill published in the GitHub repository dimetron/pi-go (154 stars, last pushed yesterday), licensed MIT. It adds 177 tokens to every session and 6,865 once invoked, about $0.0009 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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