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.
Borrowing it
Nothing to install: this file belongs to tristanisham/zvm. 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/tristanisham/zvm/master/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/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/instructions/tristanisham/zvm/agents-md"><img src="https://agentmods.dev/badge/instructions/tristanisham/zvm/agents-md.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 | $0.00972 | $0.00972 |
| Opus 5.5 | $0.00389 | $0.00389 |
| Sonnet 5.5 | $0.00194 | $0.00194 |
| Haiku 4.5 | $0.00097 | $0.00097 |
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 13d 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 — 58 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. 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.govulncheck ./...checks for known vulnerabilities in Go code and dependencies. Run it alongside tests and vet during reviews and implementation work. Install it withgo install golang.org/x/vuln/cmd/govulncheck@latestif needed.deno task build(ordeno run -A build.ts) creates cross-platform release artifacts.deno task releaseruns package tests, build tests, and a package-version check before building release artifacts; each step must pass to continue.deno task star-historyregenerates the README star chart; usesGH_TOKEN,GITHUB_TOKEN, or your savedgh auth logincredentials.- Package-manager builds should also set
-ldflags "-X 'main.BuildUpgradeMessage=...'"sozvm upgradepoints at the right updater. Quote it; the value contains spaces.
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.
- 13d ago Changed · +7 lines · +66 tokens per session 8212fa7753ed
- 14d ago Changed · +6 lines · +117 tokens per session f459c4ff22f1
- 2mo 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 (1,087 stars, last pushed 3d ago), licensed MIT. It adds 972 tokens to every session, about $0.0039 per session on Opus 5.5. 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.
zvm AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| zvm AGENTS.mdtristanisham/zvm | Instructions file | 1.1k | 3d ago | MIT | A | 972 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |