Give your profile a saved home
Open your profile and check it describes your current work. Keep it in My Agent Files → My Agent Profile, or another findable folder. Your starting filename may differ from the recording.
In Claude, open Projects, then New Project. Name it My Agent. If offered visibility choices, select Private. Select Create project. In Context, use the plus control and Upload from device to add your profile. Wait for it to appear in Context. A file attached only to a chat is not the saved Project source.
Name the Project and check Private. Use the Context plus, then Upload from device.
If Projects or uploads are unavailable, stop and ask IT to confirm your approved work account and access permissions.
Tell the Project how to use your profile
The profile describes your work. Project instructions tell Claude how to use it across chats.
Open Instructions on My Agent, paste Project instructions into Set project instructions, then select Save instructions.
Project instructionsYou 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. 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 my profile, follow its PROFILE VERSIONS rules if present and give me the complete next version. Remind me to save it as my master file, keep the old file, and replace the profile in this Project. Don't tell me the saved setup has been updated.
Reopen Instructions and check that the complete Project instructions were saved, including the final rule about master files.
Check what your agent understands
Start a chat from My Agent and send the full First Setup Check.
1. Summarize what you understand about: - My role - My responsibilities - The people I support - My goals and priorities - My recurring work - My organization 2. Identify anything that appears unclear, incomplete, or contradictory. 3. Do not fill in missing information with assumptions. 4. Ask me up to five questions that would most improve your ability to help me with my work.
Compare the reply with your file, especially your role, priorities and people you support. Answer useful questions from what you know. Correct misreadings in this chat. If your answers add or correct lasting context, request a complete updated profile following any existing version rules. Check facts and retained sections, then save a new copy without overwriting the earlier one. Replace the Project copy as step 5 describes and recheck before continuing.
Keep a useful change in your master file
From My Agent home, start a fresh chat in its empty message box. In the card below, replace [type your work preference] with Devon’s recommendation: “I prefer my agents to act as a devil’s advocate and challenge my assumptions.” Send the prompt to add it to your Profile.
Preference + versioning promptI want you to remember this work preference from now on: [type your work preference] Please update my Agent Profile with it and set up versioning, so I can track every change. Put it in my profile, not your built-in memory, so my file stays my master copy. Do all of this in one reply: 1. Add my preference to My Working Preferences, under the heading it fits best. Use my words, and don't add details I didn't give you. If it contradicts a preference already there, still add it, and name the conflict at the end so I can decide. 2. If my profile has no PROFILE VERSIONS section, add the one below to the end of it, word for word. If it already has that section, update its filename rule and active filename examples to use the hyphenated naming rule below; preserve the other rules and existing VERSION HISTORY entries. If it has no version number in its title, version line, or filename, treat the current profile as Version 1. Otherwise continue from its current number; do not restart numbering. 3. Follow PROFILE VERSIONS to return the entire updated Agent Profile, with the new version number in both its title and its filename. Keep every other section as it is, including FIRST SETUP CHECK. 4. In the What changed table, list my preference and any versioning-rule change: say whether you added PROFILE VERSIONS or updated its filename rule. Do not claim a section was added if it was already there. 5. End by walking me through saving it, as PROFILE VERSIONS describes. PROFILE VERSIONS The profile 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 Agent Profile v2. The filename uses hyphens and no spaces, like My-Agent-Profile-v2.txt. - If I ask which version you're using, give that line's number and date. - If I ask you to update this profile, create the next version: 1. Raise the current version number by one. Use that new number in the profile's title, like My Agent Profile v2, and in the version line below it, like Version 2 | Updated October 9, 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 profile as one downloadable plain-text file. The actual filename must follow My-Agent-Profile-vNUMBER.txt, replacing NUMBER with the new version number; for example, My-Agent-Profile-v2.txt. Use only plain ASCII letters, digits, hyphens, and the dot before txt. Do not use spaces, percent signs, or URL-encoded text in the filename. Set this name when creating the actual file, not only in the displayed download label, and use the same name for that label. Before returning the file, check that its filename follows this rule. Include every section and all unchanged content; do not return only the changes, summaries, or placeholders. If you can't create files, put the entire updated profile in one code block and give me the exact hyphenated filename to save it under above the code block. 5. Show what changed in a table: Section, What changed, Why. 6. Walk me through saving it: save the new file with its versioned filename in the same folder as my earlier profiles, keeping every older file. If you gave me a code block, tell me to copy the whole block into a new plain-text file with the exact filename you provided. Then replace the profile in your saved setup the same way I first added it, start a new chat, and ask which version you're using. - If I tell you something new that belongs in this profile, 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 profile is updated until I've replaced it. VERSION HISTORY - Version 1: Original profile.
Open the updated profile beside your current file. Check that it includes your new preference and keeps the existing content, including FIRST SETUP CHECK. Ask for a correction if anything is missing or a preference conflicts.
Save the complete profile in your profile folder with its new versioned filename, keeping the earlier file. If Claude gives you the full text instead of a file, copy it into a new plain-text file with the supplied filename. Continue to step 5 to replace the Project copy.
Replace the Project copy and check a fresh chat
With the checked master saved, return to My Agent. Remove the old profile from Context, then use Upload from device to add the current file. Keep older versions on your computer, with only the current profile in Context. If you kept the same file in step 4, leave its Project copy in place.
Open the current profile from Context. From My Agent home, start a fresh chat using the empty message box above recent chats. A recent-chat row reopens an older conversation. Send this check without attaching the profile again.
Check the current profileWhich version of my profile are you using? Give the version number and updated date from the profile, then briefly summarize My Working Preferences. If the number or date is missing, say so. Do not guess or change the profile.
Compare the reply with your master: the changed preference, version and date must agree. An unversioned file can honestly have no number. If the answer differs, inspect Context, replace the wrong source and repeat in another fresh chat. A matching version number alone does not pass. Repeat First Setup Check too if you corrected a fact elsewhere.
After your profile has PROFILE VERSIONS rules, personalize the bracketed line in this shorter request inside My Agent. Review, save, replace and check the returned file each time.
Can you give me an updated version of my Agent Profile with this change? [type the preference, assumption, or other detail you want changed]
Confirm your result
Confirm the outcomes below to finish this guide.
Final checks
You have a complete current master profile and a matching check from a fresh My Agent chat.
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