llms.txt
+47 −41
https://castmyagent.ai/llms.txt
− - [Finn, Junior Data Analyst](https://castmyagent.ai/roster/finn-data-analyst): best AI persona for data analysis. Finn is a free Junior Data Analyst persona pack for Claude, ChatGPT, and Gemini. Covers Data visualization, Python/pandas, and BI dashboards.− - [Naomi, Cybersecurity Analyst](https://castmyagent.ai/roster/naomi-cybersecurity-analyst): best AI persona for cybersecurity. Naomi is a free Cybersecurity Analyst persona pack for Claude, ChatGPT, and Gemini. Covers Threat modeling, Vulnerability assessment, and Security architecture review.− - [Zara, AI Product Manager](https://castmyagent.ai/roster/zara-ai-product-manager): best AI persona for AI product management. Zara is a free AI Product Manager persona pack for Claude, ChatGPT, and Gemini. Covers AI product strategy, Stakeholder management, and Technical specification.− - [Barry, IT Compliance & GRC Specialist](https://castmyagent.ai/roster/barry-compliance-specialist): best AI persona for IT compliance. Barry is a free IT Compliance & GRC Specialist persona pack for Claude, ChatGPT, and Gemini. Covers NIST frameworks, Audit trails, and Policy enforcement.− - [Marcus, Senior IT Architect](https://castmyagent.ai/roster/marcus-it-architect): best AI persona for IT architecture. Marcus is a free Senior IT Architect persona pack for Claude, ChatGPT, and Gemini. Covers Systems architecture, Technical strategy, and Root cause analysis.− - [Roxie, Fixer / Operator](https://castmyagent.ai/roster/roxie-fixer-operator): best AI persona for closing stuck work. Roxie is a free Fixer / Operator persona pack for Claude, ChatGPT, and Gemini. Covers Chase threads, Close the loop, and Untangle mess.− - [Alex, Cloud DevOps Engineer](https://castmyagent.ai/roster/alex-cloud-devops): best AI persona for cloud DevOps. Alex is a free Cloud DevOps Engineer persona pack for Claude, ChatGPT, and Gemini. Covers CI/CD pipelines, Cloud infrastructure, and Deployment automation.− - [Devon, Brand Content Strategist](https://castmyagent.ai/roster/devon-content-strategist): best AI persona for content strategy. Devon is a free Brand Content Strategist persona pack for Claude, ChatGPT, and Gemini. Covers Brand voice development, Content strategy, and Audience-first writing.− - [Lena, AI / ML Engineer](https://castmyagent.ai/roster/lena-ml-engineer): best AI persona for machine learning. Lena is a free AI / ML Engineer persona pack for Claude, ChatGPT, and Gemini. Covers Machine learning, Model training and evaluation, and MLOps.− - [Theo, UX / Product Designer](https://castmyagent.ai/roster/theo-ux-designer): best AI persona for UX design. Theo is a free UX / Product Designer persona pack for Claude, ChatGPT, and Gemini. Covers User research, Interaction design, and Design systems.− - [Dmitri, Senior DevOps / SRE Engineer](https://castmyagent.ai/roster/dmitri-devops-sre): best AI persona for site reliability. Dmitri is a free Senior DevOps / SRE Engineer persona pack for Claude, ChatGPT, and Gemini. Covers Infrastructure automation, Incident response, and CI/CD pipelines.− - [Yuki, Full-Stack Software Engineer](https://castmyagent.ai/roster/yuki-fullstack-engineer): best AI persona for full-stack engineering. Yuki is a free Full-Stack Software Engineer persona pack for Claude, ChatGPT, and Gemini. Covers Full-stack development, Code architecture, and Code review.− - [Harper, Social Media & Marketing Intern](https://castmyagent.ai/roster/harper-marketing-intern): best AI persona for social media. Harper is a free Social Media & Marketing Intern persona pack for Claude, ChatGPT, and Gemini. Covers Instagram & TikTok strategy, Fashion & lifestyle content, and Short-form video production.− - [Val, Executive Assistant](https://castmyagent.ai/roster/val-executive-assistant): best AI persona for an executive assistant. Val is a free Executive Assistant persona pack for Claude, ChatGPT, and Gemini. Covers Executive calendar management, Stakeholder communication, and Travel coordination.− - [Ibrahim, Cloud Solutions Architect](https://castmyagent.ai/roster/ibrahim-cloud-architect): best AI persona for cloud architecture. Ibrahim is a free Cloud Solutions Architect persona pack for Claude, ChatGPT, and Gemini. Covers Cloud architecture, Multi-region design, and Cost optimization.− - [Riley, Communications Director](https://castmyagent.ai/roster/riley-communications-director): best AI persona for communications. Riley is a free Communications Director persona pack for Claude, ChatGPT, and Gemini. Covers Creative positioning for founders who are too close, Turning jargon into stories, and Unexpected reframes.− - [Jules, Study Buddy](https://castmyagent.ai/roster/jules-study-buddy): best AI persona for studying. Jules is a free Study Buddy persona pack for Claude, ChatGPT, and Gemini. Covers Concept explanation, Analogy-based teaching, and Comprehension checking.− - [Sable, Writing Coach](https://castmyagent.ai/roster/sable-writing-coach): best AI persona for writing feedback. Sable is a free Writing Coach persona pack for Claude, ChatGPT, and Gemini. Covers Narrative structure, Prose editing, and Opening lines.− - [Otis, Senior Code Reviewer](https://castmyagent.ai/roster/otis-code-reviewer): best AI persona for code review. Otis is a free Senior Code Reviewer persona pack for Claude, ChatGPT, and Gemini. Covers Code review and PR feedback, Edge-case and failure-mode analysis, and Readability and maintainability critique.− - [The Best Free AI Persona for Writing and Editing](https://castmyagent.ai/blog/best-free-ai-persona-for-writing-and-editing): Which free CastMyAgent personas fit writing and editing work, who they suit, and how to start using one in three steps.− - [The Best Free Claude Persona for Code Review](https://castmyagent.ai/blog/best-free-claude-persona-for-code-review): Which free CastMyAgent persona fits code review in Claude, who it suits, and how to set it up in three steps.− - [CastMyAgent vs. Writing Your Own Custom GPT Prompt](https://castmyagent.ai/blog/castmyagent-vs-writing-your-own-custom-gpt-prompt): An honest comparison of using a free CastMyAgent persona pack versus writing your own custom GPT instructions, including when writing your own is the better choice.− - [Free AI Persona Packs vs. Paid Prompt Marketplaces](https://castmyagent.ai/blog/free-ai-persona-packs-vs-paid-prompt-marketplaces): A fair, general comparison of free AI persona packs and paid prompt marketplaces, with questions to ask before choosing either.− - [How to Give a Custom GPT a Personality (Without It Drifting)](https://castmyagent.ai/blog/how-to-give-a-custom-gpt-a-personality-without-it-drifting): A step by step guide to setting a custom GPT personality in the GPT builder, with an example instructions block you can copy and adapt.− - [How to Write a Claude Persona Prompt That Stays Consistent](https://castmyagent.ai/blog/how-to-write-a-claude-persona-prompt-that-stays-consistent): A practical guide to writing a Claude persona prompt: where to put it, how to structure it, and a copyable example you can adapt today.− - [How to Write a Persona That Actually Works](https://castmyagent.ai/blog/how-to-write-a-persona-that-actually-works): Most AI personas fail because they describe a role instead of a character. Here's a step-by-step framework for writing personas that hold up in production, with examples from real agents on the CastMyAgent roster.− - [AI Persona vs. System Prompt: What's the Difference?](https://castmyagent.ai/blog/ai-persona-vs-system-prompt): Everyone writes system prompts. Almost nobody writes personas. Here's why they're different, and why the distinction matters more than you think for building AI agents people actually want to use.− - [The 5 Personalities Every AI Team Needs (And Why "Smart" Isn't One of Them)](https://castmyagent.ai/blog/the-5-personalities-every-ai-team-needs): Most teams building with AI focus on capability. The ones actually shipping great products focus on something else entirely: personality is architecture. Here are the five character types every AI team needs.− - [You Don't Need to Build an AI Agent. You Need to Cast One.](https://castmyagent.ai/blog/you-dont-need-to-build-an-ai-agent): The AI industry is obsessed with building agents from scratch. But there's a faster, more consistent approach, casting the right agent from a roster of pre-designed talent.− - [AI Agents Don't Need to Be Smart. They Need to Be Right.](https://castmyagent.ai/blog/ai-agents-dont-need-to-be-smart): Benchmarks won't help you choose the right AI agent. Here's a practical 5-step framework for selecting agents based on fit, communication style, and consistency, not raw intelligence.− - [Welcome to the CastMyAgent Blog](https://castmyagent.ai/blog/welcome): Introducing our blog: insights on AI personas, writing style, and building character-driven agent experiences.− - [Why We Built an AI Agent Talent Agency](https://castmyagent.ai/blog/why-we-built-an-ai-agent-talent-agency): There are hundreds of AI agent platforms. We built a talent agency instead, because we think the entire industry is solving the wrong problem.− - [Persona of the week](https://castmyagent.ai/persona-of-the-week): The current free persona pick. Each page says what the persona does, who it is for, that the pack works with Claude, ChatGPT, Gemini, and Cursor, that it is free, and how to paste it in. Writing samples on the page are illustrative examples, not transcripts.− - [Home](https://castmyagent.ai): CastMyAgent offers 19 free AI persona packs for Claude, ChatGPT, and Gemini across 8 departments. Download a walk-on and paste it into your agent. The text files are MIT licensed.− - [Roster](https://castmyagent.ai/roster): Browse 19 free CastMyAgent persona packs across 8 departments. Filter by role and skill, then download a pack for Claude, ChatGPT, or Gemini.− - [Persona of the week](https://castmyagent.ai/persona-of-the-week): The current free CastMyAgent persona pick: what it does, who it is for, how to paste it into Claude, ChatGPT, Gemini, or Cursor, and illustrative writing samples.− - [Pricing](https://castmyagent.ai/pricing): Every CastMyAgent walk-on is free with the full package. 19 persona packs, no credit card required. Text files are MIT licensed.− - [How it works](https://castmyagent.ai/how-it-works): Use a CastMyAgent persona pack in three steps: open the roster, download the free package, and paste it into Claude, ChatGPT, or Gemini.− - [Documentation](https://castmyagent.ai/docs): Deployment docs for CastMyAgent persona packs: persona.json, system prompts, and quickstart files for Claude, ChatGPT, and Gemini.− - [MCP server](https://castmyagent.ai/mcp): Connect Claude, Cursor, or Claude Code to the free CastMyAgent persona catalog over the Model Context Protocol. Endpoint: https://castmyagent.ai/api/mcp.+ - [Finn, Junior Data Analyst](https://castmyagent.ai/roster/finn-data-analyst): best AI persona for data analysis. Finn is a free Junior Data Analyst persona pack for someone who needs a Junior Data Analyst in Product Studio, covering Data visualization, Python/pandas, BI dashboards, Statistical analysis, and Anomaly detection, and it works with Claude, ChatGPT, and Gemini.+ - [Naomi, Cybersecurity Analyst](https://castmyagent.ai/roster/naomi-cybersecurity-analyst): best AI persona for cybersecurity. Naomi is a free Cybersecurity Analyst persona pack for someone who needs a Cybersecurity Analyst in Engineering, covering Threat modeling, Vulnerability assessment, Security architecture review, Incident response, and Penetration testing oversight, and it works with Claude, ChatGPT, and Gemini.+ - [Zara, AI Product Manager](https://castmyagent.ai/roster/zara-ai-product-manager): best AI persona for AI product management. Zara is a free AI Product Manager persona pack for someone who needs a AI Product Manager in Product Studio, covering AI product strategy, Stakeholder management, Technical specification, User research synthesis, and Feature prioritization, and it works with Claude, ChatGPT, and Gemini.+ - [Barry, IT Compliance & GRC Specialist](https://castmyagent.ai/roster/barry-compliance-specialist): best AI persona for IT compliance. Barry is a free IT Compliance & GRC Specialist persona pack for someone who needs a IT Compliance & GRC Specialist in Compliance Corner, covering NIST frameworks, Audit trails, Policy enforcement, Risk assessment, and Compliance documentation, and it works with Claude, ChatGPT, and Gemini.+ - [Marcus, Senior IT Architect](https://castmyagent.ai/roster/marcus-it-architect): best AI persona for IT architecture. Marcus is a free Senior IT Architect persona pack for someone who needs a Senior IT Architect in Engineering, covering Systems architecture, Technical strategy, Root cause analysis, Scalability design, and Cross-team alignment, and it works with Claude, ChatGPT, and Gemini.+ - [Roxie, Fixer / Operator](https://castmyagent.ai/roster/roxie-fixer-operator): best AI persona for closing stuck work. Roxie is a free Fixer / Operator persona pack for someone who needs a Fixer / Operator in Front Office, covering Chase threads, Close the loop, Untangle mess, Sequence the night, and Hold the line, and it works with Claude, ChatGPT, and Gemini.+ - [Alex, Cloud DevOps Engineer](https://castmyagent.ai/roster/alex-cloud-devops): best AI persona for cloud DevOps. Alex is a free Cloud DevOps Engineer persona pack for someone who needs a Cloud DevOps Engineer in Engineering, covering CI/CD pipelines, Cloud infrastructure, Deployment automation, Monitoring, and Incident prevention, and it works with Claude, ChatGPT, and Gemini.+ - [Devon, Brand Content Strategist](https://castmyagent.ai/roster/devon-content-strategist): best AI persona for content strategy. Devon is a free Brand Content Strategist persona pack for someone who needs a Brand Content Strategist in The Creative Room, covering Brand voice development, Content strategy, Audience-first writing, Editorial planning, and Narrative architecture, and it works with Claude, ChatGPT, and Gemini.+ - [Lena, AI / ML Engineer](https://castmyagent.ai/roster/lena-ml-engineer): best AI persona for machine learning. Lena is a free AI / ML Engineer persona pack for someone who needs a AI / ML Engineer in Engineering, covering Machine learning, Model training and evaluation, MLOps, Adversarial robustness, and Technical mentoring, and it works with Claude, ChatGPT, and Gemini.+ - [Theo, UX / Product Designer](https://castmyagent.ai/roster/theo-ux-designer): best AI persona for UX design. Theo is a free UX / Product Designer persona pack for someone who needs a UX / Product Designer in Product Studio, covering User research, Interaction design, Design systems, Prototyping, and Accessibility, and it works with Claude, ChatGPT, and Gemini.+ - [Dmitri, Senior DevOps / SRE Engineer](https://castmyagent.ai/roster/dmitri-devops-sre): best AI persona for site reliability. Dmitri is a free Senior DevOps / SRE Engineer persona pack for someone who needs a Senior DevOps / SRE Engineer in Engineering, covering Infrastructure automation, Incident response, CI/CD pipelines, Container orchestration, and Monitoring and observability, and it works with Claude, ChatGPT, and Gemini.+ - [Yuki, Full-Stack Software Engineer](https://castmyagent.ai/roster/yuki-fullstack-engineer): best AI persona for full-stack engineering. Yuki is a free Full-Stack Software Engineer persona pack for someone who needs a Full-Stack Software Engineer in Engineering, covering Full-stack development, Code architecture, Code review, Performance optimization, and Clean code practices, and it works with Claude, ChatGPT, and Gemini.+ - [Harper, Social Media & Marketing Intern](https://castmyagent.ai/roster/harper-marketing-intern): best AI persona for social media. Harper is a free Social Media & Marketing Intern persona pack for someone who needs a Social Media & Marketing Intern in The Creative Room, covering Instagram & TikTok strategy, Fashion & lifestyle content, Short-form video production, Audience growth & engagement, and Visual brand storytelling, and it works with Claude, ChatGPT, and Gemini.+ - [Val, Executive Assistant](https://castmyagent.ai/roster/val-executive-assistant): best AI persona for an executive assistant. Val is a free Executive Assistant persona pack for someone who needs a Executive Assistant in The Executive Floor, covering Executive calendar management, Stakeholder communication, Travel coordination, Meeting preparation, and Crisis management, and it works with Claude, ChatGPT, and Gemini.+ - [Ibrahim, Cloud Solutions Architect](https://castmyagent.ai/roster/ibrahim-cloud-architect): best AI persona for cloud architecture. Ibrahim is a free Cloud Solutions Architect persona pack for someone who needs a Cloud Solutions Architect in Engineering, covering Cloud architecture, Multi-region design, Cost optimization, Disaster recovery, and Technical documentation, and it works with Claude, ChatGPT, and Gemini.+ - [Riley, Communications Director](https://castmyagent.ai/roster/riley-communications-director): best AI persona for communications. Riley is a free Communications Director persona pack for someone who needs a Communications Director in Front Office, covering Creative positioning for founders who are too close, Turning jargon into stories, Unexpected reframes, Workshop facilitation, and Narrative-driven one-pagers, and it works with Claude, ChatGPT, and Gemini.+ - [Jules, Study Buddy](https://castmyagent.ai/roster/jules-study-buddy): best AI persona for studying. Jules is a free Study Buddy persona pack for someone who needs a Study Buddy in Personal, covering Concept explanation, Analogy-based teaching, Comprehension checking, Study strategy, and Active recall techniques, and it works with Claude, ChatGPT, and Gemini.+ - [Sable, Writing Coach](https://castmyagent.ai/roster/sable-writing-coach): best AI persona for writing feedback. Sable is a free Writing Coach persona pack for someone who needs a Writing Coach in Creative Studio, covering Narrative structure, Prose editing, Opening lines, Pacing and rhythm, and Developmental feedback, and it works with Claude, ChatGPT, and Gemini.+ - [Otis, Senior Code Reviewer](https://castmyagent.ai/roster/otis-code-reviewer): best AI persona for code review. Otis is a free Senior Code Reviewer persona pack for someone who needs a Senior Code Reviewer in Engineering, covering Code review and PR feedback, Edge-case and failure-mode analysis, Readability and maintainability critique, Security-conscious surface-level review, and Explaining the reasoning behind every flag, and it works with Claude, ChatGPT, and Gemini.+ - [How to stop ChatGPT, Claude or Gemini from agreeing with everything](https://castmyagent.ai/blog/stop-ai-agreeing-with-everything): Settings, instructions and a free ready-made persona that make ChatGPT, Claude and Gemini push back on weak ideas instead of agreeing with everything.+ - [How to give ChatGPT, Claude or Gemini a consistent persona](https://castmyagent.ai/blog/consistent-ai-persona): Three ways to keep a persona consistent in ChatGPT, Claude, and Gemini: custom instructions, a Project, or a free CastMyAgent pack you paste in. No paid tier.+ - [Why does ChatGPT, Claude or Gemini ignore my custom instructions?](https://castmyagent.ai/blog/ignored-custom-instructions): Common reasons ChatGPT, Claude, Gemini and Cursor ignore your custom instructions, with fixes from the official docs and a free walk-on persona example.+ - [The Best Free AI Persona for Writing and Editing](https://castmyagent.ai/blog/best-free-ai-persona-for-writing-and-editing): Sable, Devon, and Riley are free writing personas for Claude, ChatGPT, and Gemini. This note says who each one is for and how to paste the pack in. Free.+ - [The Best Free Claude Persona for Code Review](https://castmyagent.ai/blog/best-free-claude-persona-for-code-review): Otis is the free code review persona for Claude, and the same pack works in ChatGPT and Gemini. Here is who it is for and how to install it. No paid tier.+ - [CastMyAgent vs. Writing Your Own Custom GPT Prompt](https://castmyagent.ai/blog/castmyagent-vs-writing-your-own-custom-gpt-prompt): When a free CastMyAgent pack is enough, and when you should write your own custom instructions. An honest comparison, with no paid tier on our side. Free.+ - [Free AI Persona Packs vs. Paid Prompt Marketplaces](https://castmyagent.ai/blog/free-ai-persona-packs-vs-paid-prompt-marketplaces): What to compare before you pay for prompts: license, what is in the file, and who the persona is for. CastMyAgent packs are free, with no paid tier. MIT.+ - [How to Give a Custom GPT a Personality (Without It Drifting)](https://castmyagent.ai/blog/how-to-give-a-custom-gpt-a-personality-without-it-drifting): How to set a custom GPT personality in the builder so it holds, plus a free CastMyAgent pack you can paste in instead of starting from a blank box. Free.+ - [How to Write a Claude Persona Prompt That Stays Consistent](https://castmyagent.ai/blog/how-to-write-a-claude-persona-prompt-that-stays-consistent): Where to put a Claude persona prompt, how to structure it, and a free example you can adapt. The same text pack also works in ChatGPT and Gemini. No paid tier.+ - [How to Write a Persona That Actually Works](https://castmyagent.ai/blog/how-to-write-a-persona-that-actually-works): A persona fails when it only names a job. This note shows how habits and limits make one hold, with examples from the free CastMyAgent roster. No paid tier.+ - [AI Persona vs. System Prompt: What's the Difference?](https://castmyagent.ai/blog/ai-persona-vs-system-prompt): A system prompt sets a task. A persona sets judgment, habits, and limits. Here is the difference, and where a free CastMyAgent pack fits. No paid tier.+ - [The 5 Personalities Every AI Team Needs (And Why "Smart" Isn't One of Them)](https://castmyagent.ai/blog/the-5-personalities-every-ai-team-needs): Five working styles an AI team actually needs, mapped to free CastMyAgent personas for Claude, ChatGPT, and Gemini. Smart is not one of the five. No paid tier.+ - [You Don't Need to Build an AI Agent. You Need to Cast One.](https://castmyagent.ai/blog/you-dont-need-to-build-an-ai-agent): You can cast a free persona instead of building an agent from scratch. The CastMyAgent packs work with Claude, ChatGPT, and Gemini and reply in text. Free.+ - [AI Agents Don't Need to Be Smart. They Need to Be Right.](https://castmyagent.ai/blog/ai-agents-dont-need-to-be-smart): A practical way to choose an AI persona for fit and consistency, not benchmark scores. CastMyAgent packs are free and work with Claude, ChatGPT, and Gemini.+ - [Welcome to the CastMyAgent Blog](https://castmyagent.ai/blog/welcome): The CastMyAgent blog covers free AI personas, system prompts, and when to cast a character instead of building an agent. Replies are text. No paid tier.+ - [Why We Built an AI Agent Talent Agency](https://castmyagent.ai/blog/why-we-built-an-ai-agent-talent-agency): Why CastMyAgent is a roster of free personas instead of another agent builder. The packs work with Claude, ChatGPT, and Gemini, and reply in text. No paid tier.+ - [Persona of the week](https://castmyagent.ai/persona-of-the-week): The current free persona pick. Each page says what the persona does, who it is for, that the pack works with Claude, ChatGPT, and Gemini, that it is free, and how to paste it in. Writing samples on the page are illustrative examples, not transcripts.+ ## Pricing (updated 2026-10-26)+ Is CastMyAgent free? Yes. No paid tier. The Executive Producer Pass ($12.99/month) was retired on 2026-10-06. All walk-ons are free; persona text files are MIT licensed.+ - [Home](https://castmyagent.ai): CastMyAgent has 19 free persona packs for Claude, ChatGPT, and Gemini. Download a walk-on and paste it in. The text files are MIT licensed. No paid tier.+ - [Roster](https://castmyagent.ai/roster): Browse 19 free CastMyAgent persona packs across 8 departments. Filter by role and skill, then download one for Claude, ChatGPT, or Gemini. No paid tier.
Showing the first 40 of each.
