Writing analysis, copywriting skills, and brand voice tools for content creators and marketers.
Suite of 20 blogging, copywriting, video and social media products. Includes free tools for analyzing writing quality, checking social media post lengths, scoring headlines, and estimating reading time. Premium skills unlock full product access.
Try asking Muse: "Analyze my blog post draft for readability and passive voice, then check if my social media captions fit on all platforms."
Source: Found in the official MCP Registry (com.moltlinestudio/creator) · First listed September 24, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 4 h ago.
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://mcp.moltlinestudio.com/creatorNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Moltline Creator Studio is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
In Claude, open Settings, then Connectors.
Choose Add custom connector, give it a name, and paste the link.
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://mcp.moltlinestudio.com/creatorResponse time at the last check: 394ms. Worked in 99.5% of checks over 30 days.
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
list_productsList every product in the Creator Studio line with its included skills. FREE. Takes no arguments. Returns a list of 20 product objects, each {"slug": "brand-voice-keeper", "name": ..., "tagline": ..., "skills": ["tone-checker", ...], "free_skill": "voice-quiz"}. Use the returned get_free_skillLoad a product's free gateway skill with its complete instructions. FREE. Typical input {"slug": "brand-voice-keeper"} returns {"slug": "brand-voice-keeper", "skill": "<skill name>", "instructions": "<full skill text>"}. Returns exactly one skill - the product's free gateway skilanalyze_writingAnalyze a draft for readability, passive voice, cliches, and hedging. FREE. Also measures sentence variety and keyword density, and produces a prioritized fix list. Typical input {"text": "<your draft>"} returns {"readability_grade": 9.2, "passive_voice_count": N, "cliches_found"get_full_productLoad one product in full: its persona plus every paid skill. PREMIUM (license). Typical input {"slug": "brand-voice-keeper"} returns {"slug": ..., "name": ..., "persona": "<persona text>", "skills": [{"name": ..., "instructions": ...}, ...], "free_skill": {...}}. Returns persona get_full_skillLoad one paid skill's complete instructions from a product. PREMIUM (license). Typical input {"slug": "brand-voice-keeper", "skill_name": "tone-checker"} returns {"slug": ..., "skill": ..., "instructions": "<full skill text>"}. Returns one named skill, selected by skill_name. Useheadline_analyzerScore and rank up to 20 headlines, best first. FREE. Scores 0-100 on length, power/emotion words, numbers, structure, and clarity. Typical input {"headlines": ["7 Mistakes New Writers Make", "On Writing"]} returns {"ranked": [{"headline": ..., "score": 85, "notes": ["good length"reading_timeEstimate reading and speaking time plus basic content stats. FREE. Typical input {"text": "<your article>"} returns {"words": 1200, "reading_minutes": 5.2, "speaking_minutes": 8.6, "paragraphs": 14, "fit": "newsletter/blog"}. Use when length and pacing are the question. Not for wsocial_length_checkCheck a post against every major platform's length limit at once. FREE. Covers X, LinkedIn posts and headlines, Instagram captions, Threads, YouTube titles, and meta descriptions. Typical input {"text": "<post>"} returns {"chars": N, "platforms": {"x_post": {"limit": 280, "fits":https://mcp.moltlinestudio.com/creatorNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Moltline Creator Studio to help me. It is a free service with an MCP server at https://mcp.moltlinestudio.com/creator. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
At the last check (November 13, 2026, 10:31 UTC) the endpoint was working, answering in 394ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
It was screened on September 24, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
It exposes 8 tools, including list_products, get_free_skill, analyze_writing, get_full_product. For example, you could ask Muse: "Analyze my blog post draft for readability and passive voice, then check if my social media captions fit on all platforms."
This listing was added from public sources (Found in the official MCP Registry (com.moltlinestudio/creator)). If you build Moltline Creator Studio, claim it to correct the details and get your badge.
Paste this on your site or README. It always shows the latest check.
<a href="https://musedirectory.ai/connector/moltline-creator-studio"><img src="https://musedirectory.ai/badge/moltline-creator-studio.svg" alt="Moltline Creator Studio on musedirectory.ai" width="236" height="40"></a>