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StyleMCP
What StyleMCP is
StyleMCP checks AI-generated drafts against brand rules, reports violations, and can rewrite copy to align with a brand voice. Its Learn My Voice feature analyzes supplied content to generate style rules, while live validation returns scores and actionable fixes. Teams can use ready-made SaaS, E-commerce, Healthcare, and Finance packs or define rules in YAML. The maker describes its AI Trust Layer as detecting voice drift, compliance risks, and hallucination patterns. Connections include MCP with Claude and Cursor, a REST API, a CLI, and GitHub Actions for CI/CD; the maker says it works with Claude, GPT, Llama, and any model. The core validation engine is open source and can be run on a user's infrastructure with Docker Compose. Free costs nothing for 5,000 requests monthly. Pro costs $9 a month and includes 25,000 requests. Each validate, rewrite, or batch API call counts toward usage, with batch calls counted by items processed. Requests return a 429 error after quota is exceeded until the first-of-month reset.
Who it suits
StyleMCP suits marketing and content teams checking brand voice, as well as engineering and documentation teams. Support and product teams are also named use cases.
What it does well
- Generates style rules from supplied content
- Offers four prebuilt style packs
- Supports custom rules in YAML
- Connects through API, CLI, MCP, and GitHub Actions
- Core validation engine can run on your infrastructure
What to know first
- Free plan allows 5,000 requests per month
- Over-quota requests return a 429 error until reset
- Batch requests count by the number of items processed
Limits
Free allows 5,000 requests per month. Each validate, rewrite or batch API call counts as a request, with batch requests counted by the number of items processed; after the quota is exceeded, API requests return a 429 error until the quota resets on the first of the month.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | 5,000 requests/month · All API endpoints · Basic rule-based rewrites · Default SaaS pack · Community support | Free |
| Team | Billed monthly · 100,000 requests/month · AI-powered rewrites · Unlimited custom packs · Team management · Priority support · Brand health reports | $29 a month |
| Pro | 25,000 requests/month · AI-powered rewrites · Custom style packs · Usage analytics dashboard · Email support | $9 a month |
| Business | 500,000 requests/month · AI-powered rewrites · AI Trust Layer analytics · Unlimited team members · Priority support + Slack · Advanced brand reporting · API rate limit increase | $99 a month |
| Enterprise | Contact for pricing · Unlimited requests · Self-hosted option · “Learn my voice” AI training · Custom integrations · Dedicated support + SLA · SSO & audit logs | On request |
As stylemcp.com lists them, read 30 Sept 2026. The maker's own page has the final word.
Getting started
- Visit https://stylemcp.com/.
- Start with the Free plan or choose a paid plan; Pro starts at $9 a month.
- Select a prebuilt style pack or define custom rules in YAML.
- Connect using MCP with Claude or Cursor, the REST API, CLI or GitHub Actions.
- For self-hosting, use the core validation engine with Docker Compose on your own infrastructure.
- Contact [email protected] or use GitHub Discussions for help.
Verdict
StyleMCP pairs draft validation and rewrites with several ways to connect it to team workflows. Check request limits before choosing a plan, particularly for batch processing.
Questions
Is there a free plan?
Yes. Free costs nothing and includes 5,000 requests per month, all API endpoints, basic rule-based rewrites and the default SaaS pack.
How much do paid plans cost?
Pro is $9 a month, Team is $29 a month and Business is $99 a month. Enterprise pricing is available by contacting the maker.
Which platforms does StyleMCP support?
It supports API, Linux, self-hosted and web. The documentation describes running the open-source core on your own infrastructure with Docker Compose.
Is StyleMCP open source?
The core validation engine is open source.
Which integrations and models does it support?
It supports MCP connections with Claude and Cursor, a REST API, a CLI and GitHub Actions for CI/CD. The maker says it works with Claude, GPT, Llama and any model.
How are requests counted?
Each validate, rewrite or batch API call counts as a request, with batch requests counted by the number of items processed. When a quota is exceeded, API requests return a 429 error until the quota resets on the first of the month.
Facts from StyleMCP's own pages
- AI support
- The maker says it works with Claude, GPT, Llama, and any model. · stylemcp.com, 30 Sept 2026
- Audience
- The maker describes use cases for marketing and content teams, engineering and docs teams, and support and product teams. · stylemcp.com, 30 Sept 2026
- Integrations
- StyleMCP supports MCP connections with Claude and Cursor, a REST API, a CLI, and GitHub Actions for CI/CD. · stylemcp.com, 30 Sept 2026
- Overages
- When a quota is exceeded, API requests return a 429 error until the quota resets on the first of the month. · stylemcp.com, 30 Sept 2026
- Purpose
- StyleMCP validates AI-generated drafts, flags brand-rule violations, and can rewrite copy to match a brand voice. · stylemcp.com, 30 Sept 2026
- Self-hosting
- The core validation engine is open source, and the documentation describes running it on your own infrastructure with Docker Compose. · stylemcp.com, 30 Sept 2026
- Style packs
- It offers prebuilt SaaS, E-commerce, Healthcare, and Finance packs and supports custom rules in YAML. · stylemcp.com, 30 Sept 2026
- Support
- The documentation directs users to GitHub Discussions or [email protected] for help. · stylemcp.com, 30 Sept 2026
- Trust features
- The AI Trust Layer is described as detecting voice drift, compliance risks, and hallucination patterns. · stylemcp.com, 30 Sept 2026
- Usage limit
- Each validate, rewrite, or batch API call counts as a request, with batch requests counted by the number of items processed. · stylemcp.com, 30 Sept 2026
- Validation
- Real-time validation returns scores, violations, and actionable fixes. · stylemcp.com, 30 Sept 2026
- Voice analysis
- Its “Learn My Voice” feature analyzes supplied content and generates custom style rules automatically. · stylemcp.com, 30 Sept 2026
Where StyleMCP stands on Freedom251
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