Oh My Posh Validator
- 23.2k repo stars
- Updated July 27, 2026
- JanDeDobbeleer/oh-my-posh
Oh My Posh Validator is an official MCP server that validates Oh My Posh prompt-theme configurations and segment snippets against the project schema.
About
This is an official Model Context Protocol server that validates Oh My Posh prompt-theme configurations and segment snippets against the project's schema. It exposes two tools: one that validates a full config (JSON, YAML, or TOML) and one that validates an individual segment snippet. A developer uses it when iterating on an Oh My Posh theme with an AI assistant so invalid properties are caught before they break the terminal prompt. It checks config correctness and does not generate or apply themes.
- Official Oh My Posh validator MCP
- Validates full configs and segment snippets
- Supports JSON, YAML, and TOML input
- Checks against the official Oh My Posh schema
Oh My Posh Validator by the numbers
- Exposes 2 verified tools (MCP introspection)
- Data as of Jul 28, 2026 (Skillselion catalog sync)
claude mcp add --transport http validator https://ohmyposh.dev/api/mcpAdd your badge
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| repo stars | ★ 23.2k |
|---|---|
| Transport | HTTP |
| Auth | None |
| Tools | 2 |
| Last updated | July 27, 2026 |
| Repository | JanDeDobbeleer/oh-my-posh ↗ |
How do I catch an invalid Oh My Posh config property before it silences segments or breaks my prompt?
Validate Oh My Posh theme configs and segments against the schema
Who is it for?
Developers editing Oh My Posh prompt themes with an AI assistant who want config errors caught before they break the prompt.
Skip if: Anyone not using Oh My Posh, or who needs theme generation rather than validation.
What you get
The config or segment snippet is validated against the schema and any errors are reported.
- Schema validation results for oh-my-posh configs and segment snippets
- Fewer broken prompt deployments in dotfiles and shared themes
By the numbers
- Exposes 2 tools: validate_config and validate_segment
Oh My Posh Validator capabilities & compatibility
Free; no API key required.
- Capabilities
- schema validation · config validation
- Use cases
- testing
- Runs
- Runs locally
- Pricing
- Free
What Oh My Posh Validator says it does
Validate oh-my-posh configurations and segment snippets against the official schema.
Tools 2
Public tool metadata - what this server can do for an agent.
validate_config2 paramsValidate an oh-my-posh configuration against the schema. Supports JSON, YAML, and TOML formats.
contentstringrequiredThe configuration content as a string (JSON, YAML, or TOML)formatstringThe format of the configuration (auto-detect if not specified)
validate_segment2 paramsValidate a segment snippet against the oh-my-posh schema. Useful for validating individual prompt segments before adding them to a configuration.
contentstringrequiredThe segment content as a string (JSON, YAML, or TOML)formatstringThe format of the segment (auto-detect if not specified)
README.md
This repo was made with love using GitKraken.
Sponsors
Join the community
What started as the offspring of oh-my-posh2 for PowerShell resulted in a cross platform, highly customizable and extensible prompt theme engine. After 4 years of working on oh-my-posh, a modern and more efficient tool was needed to suit my personal needs.
:heart: Support :heart:
- No coffee, no code.
Features
- Shell and platform agnostic
- Easily configurable
- The most configurable prompt utility
- Fast
- Secondary prompt
- Right prompt
- Transient prompt
Documentation
Reviews
Thanks
- Chris Benti providing the first influence to start oh-my-posh
- Keith Dahlby for creating posh-git and making life more enjoyable
- Robby Russell for creating oh-my-zsh, without him this would probably not be here
- Janne Mareike Koschinski for providing information on how to get certain information using Go (and the amazing README)
- Starship for doing great things
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Official oh-my-posh schema validator MCP—not a generic theme marketplace or prompt designer skill.
FAQ
What does the validator check?
It validates Oh My Posh configurations and segment snippets against the official schema, supporting JSON, YAML, and TOML input.
What tools does it expose?
Two: validate_config for a full configuration and validate_segment for an individual segment snippet.