How Should You Rotate Secrets for a Live AI Agent?

Rotate secrets for a live AI agent the way you cut over production credentials: inventory every key, token, mailbox delegate, vendor seat, and shared console password tied to the job; dual-run the new credential beside the old one; revoke the old only after review, escalate, and write-back still work under the new identity. Forever-keys and undocumented mid-day swaps are not rotation. They are deferred outages with a polite name.

This is different from owner offboarding. What Happens When the Owner of a Live AI Agent Leaves? covers interim owners, freeze-on-leave, and handoff drills. Secret rotation assumes the owner seat is filled and focuses on credentials that keep the agent talking to mailboxes, CRMs, APIs, and vendor consoles while the job stays live.

Pro Logica’s AI agents solutions page shows the same loop across trades: open the screen, follow the playbook, pause for a human. That loop only survives a credential cutover if “the human” can still approve, escalate, and stop under the new secret—not after a silent key swap that breaks the tray at 2 p.m.

What counts as a secret for an operational agent?

More than the API key sitting in a vault label.

Count every credential the live job needs to read triggers, propose work, or write back after approval:

• API keys and service tokens for CRM, ticketing, billing, or messaging connectors.
• OAuth tokens and refresh chains for mailboxes, calendars, and SaaS apps the agent polls.
• Mailbox delegates and shared inboxes the agent watches or sends from after human approval.
• Vendor seats and console passwords used for model providers, observability, or deployment tools.
• Shared “ops” logins that several people and the agent both use—these are the highest-risk forever-keys.

If you cannot name which playbook version and which write-back allowlist a credential supports, you do not have an inventory. You have folklore. Pair this list with the allowlist discipline in What Should an AI Agent Be Allowed to Write Back?—a new key that can touch money fields is not a rotation win.

Why do forever-keys break revoke and audit honesty?

A key that never expires cannot prove revoke worked. When something goes wrong, you cannot say “we cut access at 14:02” because the old credential still authenticates.

Forever-keys also blur identity. Audit rows that say “agent-prod” while three humans and a weekend contractor share the same token are not reconstructable. What Audit Trail Should a Live AI Agent Leave? only stays honest if each live credential maps to a known identity and a known cutover time.

Undocumented mid-day swaps create the same problem as unversioned playbook edits. Yesterday’s versioning post argued against mid-day “latest” without a named cutover. Secrets need the same discipline: a scheduled dual-run window, a named operator, and a recorded revoke—not a Slack paste at lunch.

How should you inventory before you touch anything?

Start with the live first job only. List every system the agent touches for that job. For each secret, record:

• Where it lives (vault path, env, console).
• What it can do (read, propose, write-back fields).
• Who else can use it (agent-only vs shared).
• Last known rotate date and next due date.
• Which playbook version id and retain rules depend on it—see How Should You Version the Playbook for a Live AI Agent? and What Training Data Should a Live AI Agent Be Allowed to Remember?.

Mark shared forever-keys as rotate-or-split. Do not “renew” a shared password and call it done. Split agent-only credentials from human console access whenever the vendor allows it.

Ownership still matters. Who Should Own an AI Agent After It Goes Live? names who approves the cutover. The technical operator may mint the new key; the decision owner signs that review and escalate routes still work.

What does dual-run look like for agent credentials?

Dual-run means the new credential can perform the same live paths before you revoke the old one—without guessing under pressure.

1. Mint the new secret with the same least privilege as the intended end state (not “admin for now”).
2. Wire it beside the old one in a controlled window: shadow reads, then a small set of approved write-backs if the allowlist requires them.
3. Prove the trays: open the review queue, approve one benign item, hold one, and confirm escalate packaging still attaches evidence under the new identity—see How Should You Review Work From a Live AI Agent? and How Should You Escalate Work From a Live AI Agent?.
4. Confirm stop still works under the new credential path—pair with When Should You Stop a Live AI Agent? so a failed cutover can park the job cleanly.
5. Revoke the old secret and re-run one read + one approved write-back + one deliberate hold. If any step needs the old key, roll back dual-run; do not leave both live indefinitely.

Dual-run is not “leave both forever.” It is a short overlap with a clock and a success checklist. Measure it the same way you measure the agent: completion under the new identity, review latency, escalate response, and zero reliance on the revoked key—see How Do You Measure Whether an AI Agent Is Working?.

How do you prove review, escalate, and write-back after revoke?

Do not trust a green “connected” badge. Force the control loop:

• Trigger one real inbound item the agent should propose.
• Approve it under a named reviewer using the new credential path.
• Confirm the write-back hit only allowlisted fields.
• Force one escalate pack and confirm routing reaches a live person.
• Export or inspect audit events for mint, dual-run start, revoke, and post-revoke success.

If revoke breaks the mailbox delegate or vendor seat the review tray depends on, you did not rotate—you orphaned the human gate. Pause or stop until the dual-run checklist passes. Pause rules from When Should an AI Agent Pause for a Human? still apply during credential windows.

What should you refuse?

Refuse forever-keys “because the vendor makes rotation hard.” Refuse shared console passwords that humans and the agent both use. Refuse mid-day undocumented swaps with no inventory line and no dual-run proof. Refuse expanding write-back or retain scope “while we are in there.” Refuse keeping the old key active “just in case” after the new path is proven—that is not safety; it is two attack surfaces.

Also refuse rotating secrets during an owner handoff without an interim owner named. Offboarding and rotation are separate drills; stacking them multiplies folklore.

How should you stand up secret rotation this week?

Take the live first job. Write the secret inventory on one page. Schedule a dual-run window with a named owner and technical operator. Mint least-privilege replacements. Prove review, escalate, write-back, and stop under the new credentials. Revoke the old ones. Record cutover times in the audit trail. Put the next rotate date on the calendar before anyone celebrates “we rotated.”

Governance themes in the NIST AI Risk Management Framework map cleanly here: known identities, controlled change, and evidence after access changes—not hope that a pasted key still works.

AI agent development work at Pro Logica scopes structured execution and control loops so credentials are part of the operating system, not an afterthought. For broader production patterns, see AI systems. If you need an engineer beside the team while dual-run and revoke gates take shape, that is closer to forward-deployed AI engineering.

Watch the nine-trade demos on the AI agents page if you need the loop in motion. The trade changes. The rotation rule does not: inventory, dual-run, revoke, prove the trays.

If you want help designing secret rotation for a live agent — inventory, dual-run cutover, revoke proof, and tray checks — book a call. Bring one live agent whose API key or mailbox token has no recorded rotate date.

What should you read next if this issue sounds familiar?

If this topic matches what your team is dealing with, these pages are the best next step inside Prologica's site.

• What Happens When the Owner of a Live AI Agent Leaves? for access revoke during personnel change, not credential cutover.
• What Audit Trail Should a Live AI Agent Leave? for immutable mint/revoke evidence after rotation.
• Forward Deployed Engineer (FDE) Services for delivery context.