Add your style guide to My Agent
Last week your agent learned your work from your Agent Profile. This week it learns how you write. With your style guide in My Agent's Files, every chat in the Project can use it without an attachment.
This builds on last week's workshop, Give Your Agent a Home Inside Claude, and on the style guide you saved with Build Your Communication Style Guide. Do those first if you haven't.
If your account doesn't offer Projects or file uploads, you can still watch the video and keep attaching or pasting your Agent Profile and style guide into each chat, or ask IT about access.
In My Agent Files, make a folder called Communication Style Guide beside My Agent Profile and move your style guide into it, so each new version has a home. Any folder you can find again works.
In Claude, open Projects, then My Agent. Beside Files, select Add, then Upload from device, and choose your style guide. Wait until Files shows two files: your Agent Profile and your style guide. Add it here rather than to a chat, where it would stay in that one chat.
Tell My Agent what your style guide is for
This card replaces last week's instructions. It keeps every rule and adds your style guide: your agent uses it for anything you'll send or share and copies its patterns rather than the particulars of its examples.
On the My Agent page, select Edit beside Instructions. In Set project instructions, select all of last week's text, paste the card in its place, then select Save instructions. If you added lines of your own to last week's instructions, add them to the new card before you save.
Project instructions with your style guideYou are my work agent. You help me with my day-to-day work. You have these reference files. Use each one for its job: - Agent Profile: my role, priorities, the people I work with and how I like answers. Use it as background whenever it's relevant. - Communication Style Guide: how I write, including any My Voice Dial settings. Use it whenever you draft something I'll send or share. Copy its patterns, not the particulars of its examples. If one of its sections has its own instructions, follow them. How to work with me: - Don't invent facts about me, my organization or my work. If a missing detail would change your answer, ask me one question first. - Run a file's First Setup Check only when I ask for it. - My files are the master copies. When I ask to update one, follow that file's own VERSIONS section if it has one and give me the complete next version. Remind me to save it as my master file, keep the old file, and replace that file in this Project. Don't tell me the saved setup has been updated.
Select Edit again and check that the whole card was saved, through the last rule about master files.
Test your agent's voice in a new chat
Now check that your agent uses your style guide on its own, with nothing attached. If the draft sounds like you, the saved setup is working.
On the My Agent page, start a new chat in the message box at the top, above your recent chats. Copy the card and fill in the two bracketed lines with something you write often, such as a team update or a reply to a customer. A few words on each is enough, then send it.
Test my agent's voiceDraft a short message using my Communication Style Guide. Don't send or post anything. Who it's for: [who will read it] What it needs to say: [the facts, in a few words] After the draft, name the two or three rules from my style guide that shaped it most, and anything you had to guess.
Read the draft aloud. Each rule your agent names should be one you can find in your style guide, and any fact it guessed needs checking before you use the draft. Then note one thing that sounds unlike you, such as a tone that's too cold or sentences that run long. That becomes your change in the next step. If nothing does, that's a good result too.
Set up versioning for your style guide
Last week you versioned your Agent Profile. Now do the same for your style guide, so each change becomes a new numbered file you can compare and go back to. Fixing the file, rather than one draft, means every later draft gets it right.
Stay in the same chat. If you have a change, send Set up versioning with your change, with its bracketed line replaced by what sounded off and the rule you want instead. If the draft already sounded like you, send Set up versioning only (no change).
Set up versioning with your changeI want to set up versioning for my Communication Style Guide, so I can track every change. Change to make: [type what sounded unlike you and the rule you want instead, or write "None, set up versioning only"] Put any change in my style guide, not your built-in memory, so my file stays my master copy. Unless a rule conflicts, do all of this in one reply: 1. If I gave a change, add it as a rule in the section it fits best, such as Structure and Formatting or Words and Phrases to Avoid. Use my words, and don't add rules I didn't give you. Keep it about how I write, not about the facts of any one message. If it contradicts a rule already there, stop before writing anything: quote both rules and ask me which one to keep. 2. If my style guide has no STYLE GUIDE VERSIONS section, add the one below to the end of it, word for word. If it has no version number in its title, version line or filename, treat the current guide as Version 1. Otherwise continue from its current number. Do not restart numbering. 3. Follow STYLE GUIDE VERSIONS to return the entire updated style guide, with the new version number in both its title and its filename. Keep every other section as it is, including My Voice Dial and How I Want My AI Agent to Use This Guide. 4. In the What changed table, list my change, if I gave one, and say whether you added STYLE GUIDE VERSIONS. Do not claim a section was added if it was already there. 5. End by walking me through saving it, as STYLE GUIDE VERSIONS describes. STYLE GUIDE VERSIONS The style guide title, the version line under it, and the filename all show the same version number. Use simple whole numbers: v1, v2, v3, and so on. The title uses readable spaces, like My Communication Style Guide v2. The filename uses hyphens and no spaces, like My-Communication-Style-Guide-v2.txt. - If I ask which version you're using, give that line's number and date. - If I ask you to update this style guide, create the next version: 1. Raise the current version number by one. Use that new number in the title and in the version line below it, like Version 2 | Updated October 16, 2026. These are examples: use the actual next number and today's date. If you can't see today's date, write DATE NEEDED. 2. Apart from the title, version line and version history, change only what I asked. Keep everything else as it is, in the same order. 3. Add a one-line summary to the top of VERSION HISTORY. Keep the five newest lines. 4. Give me the entire updated style guide as one downloadable plain-text file named My-Communication-Style-Guide-vNUMBER.txt, replacing NUMBER with the new version number. Use only plain letters, digits, hyphens and the dot before txt. Include every section and all unchanged content. If you can't create files, put the entire style guide in one code block and give me the exact filename above it. 5. Show what changed in a table: Section, What changed, Why. 6. Walk me through saving it: save the new file in the same folder as my earlier versions, keeping every older file. Then replace the style guide in your saved setup the same way I first added it, start a new chat, and ask which version you're using. - If a change would contradict something already in this guide, quote both and ask me which one to keep before you write the new version. - If I tell you something new about how I write, offer a new version. Wait for my yes. - Never overwrite an earlier version or reuse its number. - You can't change your own saved setup, so don't say my style guide is updated until I've replaced it. VERSION HISTORY - Version 1: Original style guide.
Set up versioning only (no change)I want to set up versioning for my Communication Style Guide, so I can track every change. Change to make: None, set up versioning only Put any change in my style guide, not your built-in memory, so my file stays my master copy. Unless a rule conflicts, do all of this in one reply: 1. If I gave a change, add it as a rule in the section it fits best, such as Structure and Formatting or Words and Phrases to Avoid. Use my words, and don't add rules I didn't give you. Keep it about how I write, not about the facts of any one message. If it contradicts a rule already there, stop before writing anything: quote both rules and ask me which one to keep. 2. If my style guide has no STYLE GUIDE VERSIONS section, add the one below to the end of it, word for word. If it has no version number in its title, version line or filename, treat the current guide as Version 1. Otherwise continue from its current number. Do not restart numbering. 3. Follow STYLE GUIDE VERSIONS to return the entire updated style guide, with the new version number in both its title and its filename. Keep every other section as it is, including My Voice Dial and How I Want My AI Agent to Use This Guide. 4. In the What changed table, list my change, if I gave one, and say whether you added STYLE GUIDE VERSIONS. Do not claim a section was added if it was already there. 5. End by walking me through saving it, as STYLE GUIDE VERSIONS describes. STYLE GUIDE VERSIONS The style guide title, the version line under it, and the filename all show the same version number. Use simple whole numbers: v1, v2, v3, and so on. The title uses readable spaces, like My Communication Style Guide v2. The filename uses hyphens and no spaces, like My-Communication-Style-Guide-v2.txt. - If I ask which version you're using, give that line's number and date. - If I ask you to update this style guide, create the next version: 1. Raise the current version number by one. Use that new number in the title and in the version line below it, like Version 2 | Updated October 16, 2026. These are examples: use the actual next number and today's date. If you can't see today's date, write DATE NEEDED. 2. Apart from the title, version line and version history, change only what I asked. Keep everything else as it is, in the same order. 3. Add a one-line summary to the top of VERSION HISTORY. Keep the five newest lines. 4. Give me the entire updated style guide as one downloadable plain-text file named My-Communication-Style-Guide-vNUMBER.txt, replacing NUMBER with the new version number. Use only plain letters, digits, hyphens and the dot before txt. Include every section and all unchanged content. If you can't create files, put the entire style guide in one code block and give me the exact filename above it. 5. Show what changed in a table: Section, What changed, Why. 6. Walk me through saving it: save the new file in the same folder as my earlier versions, keeping every older file. Then replace the style guide in your saved setup the same way I first added it, start a new chat, and ask which version you're using. - If a change would contradict something already in this guide, quote both and ask me which one to keep before you write the new version. - If I tell you something new about how I write, offer a new version. Wait for my yes. - Never overwrite an earlier version or reuse its number. - You can't change your own saved setup, so don't say my style guide is updated until I've replaced it. VERSION HISTORY - Version 1: Original style guide.
Check the reply before you save anything. The What changed table should list your change, if you gave one, and say STYLE GUIDE VERSIONS was added. The new file's title and version line should show the next version number: v2 for most people, or v3 if your style guide already had a v2, for example from Build an Answer Bank in Your Voice. Every other section should be kept, including My Voice Dial if you have one. If something's wrong, ask in the same chat for a complete corrected file. You approve every change to your files.
Select Download on the file Claude returns. Save it under the filename in the reply, such as My-Communication-Style-Guide-v2.txt, beside your earlier style guide, and keep the earlier file as your record.
If Claude gives you text instead of a file, copy all of it into a new plain-text file with that exact filename.
Replace the style guide in My Agent
Saving the new version on your computer doesn't change My Agent. Until you replace the file there, every chat in the Project still reads the earlier one.
On the My Agent page, select Files to open the list, open the earlier style guide's menu and remove it. Then select Add, then Upload from device, and choose the new file from your style guide folder. Keep every version on your computer and only the current one in My Agent.
Start a new chat in My Agent and send Check my file versions. It should name your new style guide version and quote your change, or the versioning setup, from the top of VERSION HISTORY. If it still names the earlier version, check Files and try another new chat.
Check my file versionsWhich versions of my files are you using? Read the current Agent Profile and Communication Style Guide saved in this Project or Notebook. For each one, give its version number and updated date. If a number or date is missing, say so. Then quote the newest line of my style guide's VERSION HISTORY. Use the files rather than an older conversation. Do not guess or change any file.
Work through a Field Guide with your agent
Now put your agent to work. Each Field Guide's Download Guide link saves the whole guide as a .md file, plain text that AI tools read well. Attach it to a chat in My Agent, and your agent walks you through the exercise one step at a time, shaped to your role.
Open Field Guides and choose a Week 2 guide that fits something on your plate: Build an Answer Bank in Your Voice, Write the Ask Your Boss Can Say Yes To, Explain a Technical Change So Non-Technical People Get It, Edit an AI Draft Until It Sounds Like You, or Teach Your Agent to Give Better Writing Feedback. The recording uses Write the Ask Your Boss Can Say Yes To. Read the guide's Data Rules, then select Download Guide.
On the My Agent page, use the + in the message box at the top to attach the downloaded file. Attach it to the chat rather than to Files, because a guide is for one task. Then send: Can you help me work through this exercise?
Answer in your own words, one question at a time. If a step doesn't go the way you expect, say so in the same chat, or ask your agent to help you fill something in. When the guide says to save a file or replace one in My Agent, do that yourself. If you start a new chat, attach the guide again and say which step you're on.
The same method works for any article or document your organization lets you use with AI: attach it and ask your agent what matters in it for your role.
Confirm your result
Confirm the outcomes below to finish this guide.
Final checks
A new My Agent chat with nothing attached drafts in your voice and names rules from your style guide.
My Agent holds the new version of My Communication Style Guide, and a new chat names that version and quotes its newest VERSION HISTORY line.
Provide Feedback
Thanks. That went straight to the people who write these guides.