oh-my-posh is a customizable prompt theme engine that renders command-line prompts across shells and platforms. Developers and terminal users use it to configure primary, secondary, right, and transient prompts in shells such as PowerShell, zsh, Bash, and cmd. The catalogue entries provide skills, instructions, agents, and an MCP integration for working with oh-my-posh.
Borrowing it
Nothing to install: this file belongs to JanDeDobbeleer/oh-my-posh. 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/JanDeDobbeleer/oh-my-posh/main/AGENTS.mdgit clone --depth 1 https://github.com/JanDeDobbeleer/oh-my-poshWrote 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/jandedobbeleer/oh-my-posh/agents-md)<a href="https://agentmods.dev/instructions/jandedobbeleer/oh-my-posh/agents-md"><img src="https://agentmods.dev/badge/instructions/jandedobbeleer/oh-my-posh/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/jandedobbeleer/oh-my-posh/agents-md"><img src="https://agentmods.dev/badge/instructions/jandedobbeleer/oh-my-posh/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 | $0.01012 | $0.01012 |
| Opus 5.5 | $0.00405 | $0.00405 |
| Sonnet 5.5 | $0.00202 | $0.00202 |
| Haiku 4.5 | $0.00101 | $0.00101 |
Grade A, and why
oh-my-posh 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 2d 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 — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Instructions
Oh My Posh is a cross-shell prompt theme engine written in Go, with the module root in src/. Rendering runs on every
shell prompt, so it is a hot path: no extra process spawns, network calls, or file reads per render without
src/cache.
Non-negotiables
Corrections in past sessions keep landing on these. Check each one before you report a change as done.
- Reuse before building. Find how the codebase already solves the problem before designing anything: a similar
segment, an
Environmentmethod,src/cache, or a CLI call behind an option like other segments use. Never add a dependency without asking. Remove deprecated logic instead of maintaining it. - Go through
runtime.Environment(s.envin segments) for every OS, shell, file, and command call, so tests can mock it. Check its methods before reaching foros,os/exec, orpath/filepath. - Tests prove behavior, not the patch. A test must fail when the behavior breaks and survive a correct refactor.
Write them table-driven; the
golangskill has the rules. - No
else. Use guard clauses, early returns, or aswitch. The Stop hook blocks newelsebranches. - Comments explain a why the code cannot. Never restate a name or signature, exported symbols included, in any language. Default to no comment.
- Log with
src/log:log.Error(err)where the error occurs, anddefer log.Trace(time.Now(), args...)in functions worth tracing. Do not format errors yourself. - Commit only when asked, push only when asked. Fold every fix to a commit that is not on
maininto that commit withgit commit --fixup <sha>andgit rebase --autosquash, lint and CI fallout included. Never rewritemain.
Repository map
| Path | Purpose |
|---|---|
src/segments/ |
One .go and one _test.go per segment |
src/config/ |
Segment registry; an unregistered segment fails silently at runtime |
src/prompt/ |
Rendering engine |
src/runtime/ |
Environment abstraction and its mock |
src/cache/ |
TTL, file, and command-path caching; do not build another cache |
src/cli/ |
CLI commands on src/cmdtree, registered in root.go |
src/shell/ |
oh-my-posh init <shell>; scripts/ are embedded, so rebuild after editing |
themes/ |
Bundled themes, validated against themes/schema.json |
website/ |
Docusaurus docs; segment pages live in website/docs/segments/<category>/ |
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.
- 2d ago Changed · +7 tokens per session 7ed53296f9cd
- 12d ago Changed · -122 lines · -1,081 tokens per session bb59954586c8
- 24d ago Changed · +10 lines · +150 tokens per session fe9d4ae8d236
- 1mo ago Changed · -2 lines · -51 tokens per session 0578a986a457
- 1mo ago First seen · 188 lines · 1,987 tokens per session scan A adac1bbddb43
oh-my-posh AGENTS.md is an instructions file published in the GitHub repository JanDeDobbeleer/oh-my-posh (23,626 stars, last pushed 2d ago), licensed MIT. It adds 1,012 tokens to every session, about $0.0040 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.
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Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
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Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.