zvm is a version manager for the Zig programming language that installs and switches between Zig releases. Developers use it when projects require different Zig versions or when Zig changes frequently.
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 agentmods add instructions/tristanisham/zvm/agents-mdgit clone --depth 1 https://github.com/tristanisham/zvmWrote 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/instructions/tristanisham/zvm/agents-md)<a href="https://agentmods.dev/instructions/tristanisham/zvm/agents-md"><img src="https://agentmods.dev/badge/instructions/tristanisham/zvm/agents-md.svg" alt="Measured on agentmods" 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 | $0.00789 | $0.00789 |
| Opus 5 | $0.00394 | $0.00394 |
| Sonnet 5 | $0.00158 | $0.00158 |
| Haiku 4.5 | $0.00079 | $0.00079 |
Grade A, and why
zvm AGENTS.md 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 6d 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 — 45 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Repository Guidelines
Project Structure & Module Organization
ZVM is a Go CLI for installing and switching Zig and ZLS versions. main.go defines commands and initializes the shared cli.ZVM. Core behavior lives in cli/: installation and verification in install.go, version selection in use.go and resolve.go, configuration in config.go, and self-upgrades in upgrade.go. OS-specific links and metadata live under cli/meta/. Keep tests beside their implementation as *_test.go. Installer entry points are install.sh and install.ps1; build.ts drives Deno-based release builds. installer/windows/ is a build input consumed by .github/workflows/winget.yml to produce the MSI, not reference material. Files under .github/assets/ are generated by workflows and must not be hand-edited. docs/ is gitignored.
Build, Test, and Development Commands
go run . --helpruns the CLI from source.go build -v .builds the localzvmbinary.go build -tags noAutoUpgrades .builds the package-manager variant without self-upgrade support.go test -v ./...runs the complete Go test suite.go test -v ./cli -run TestResolveStableruns one focused test.go fmt ./...formats Go files; run it before submitting changes.go vet ./...performs standard static checks. CI also runsgolangci-lintwitherrcheckdisabled.deno task build(ordeno run -A build.ts) creates cross-platform release artifacts.deno task star-historyregenerates the README star chart; needsGITHUB_TOKEN.- Package-manager builds should also set
-ldflags "-X 'main.BuildUpgradeMessage=...'"sozvm upgradepoints at the right updater. Quote it; the value contains spaces.
Coding Style & Naming Conventions
Follow gofmt output and normal Go indentation. Use camelCase names and keep
symbols unexported unless another package needs them. Put platform differences
in paired build-tagged files such as link_unix.go and link_win.go, rather
than scattering runtime OS checks. Preserve sentinel error behavior from
cli/error.go; wrap or join errors when callers need to inspect them. Keep
security-sensitive download verification intact unless the change explicitly
targets that behavior.
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.
- 6d ago First seen · 45 lines · 789 tokens per session scan A 1c82cc39d626
zvm AGENTS.md is an instructions file published in the GitHub repository tristanisham/zvm (1,055 stars, last pushed today), licensed MIT. It adds 789 tokens to every session, about $0.0039 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.
Other instructions, from other repositories
nullclaw AGENTS.md
Instructions for nullclaw/nullclaw, covering agents.md — nullclaw agent engineering protocol, 1) project snapshot (read first), 3) engineering principles (normative), 3.1 kiss and 3.2 yagni.
nullclaw CLAUDE.md
Instructions for nullclaw/nullclaw, covering claude.md, mandatory reference, build & test commands, requires exactly zig 0.16.0 (verify: zig version) and build flags.
buzz AGENTS.md
Instructions for buzz-language/buzz, covering agents.md, project, working tree policy, do not touch and common commands.
Grace AGENTS.md
AGENTS.md instructions for ScottArbeit/Grace, covering agent instructions, agent quickstart (local), issue tracking, development process and markdown guidelines.
ledger CLAUDE.md
Instructions for peterjthomson/ledger, covering claude.md - ledger project reference, project overview, architecture, file structure and core interfaces.
ledger AGENTS.md
Instructions for peterjthomson/ledger, covering agents.md, project overview, quick facts, key files to know and common tasks.