Rotate API Keys Without Breaking Integrations

AI drafts migration guides with clear instructions and timelines. Engineering reviews every notice before it reaches API consumers.

The problem

Why this matters

Surprise API key rotations break customer integrations and erode trust. Even planned rotations cause outages when migration instructions are unclear, sent too late, or reach the wrong contact. The challenge is compounding when you have hundreds of API consumers across different integration patterns.

The solution

How MultiMail solves this

MultiMail's AI agent identifies affected API consumers, drafts clear migration guides tailored to each consumer's integration pattern, and sends advance notices with appropriate lead time. Gated_send oversight ensures every notice is technically accurate before reaching developers.

1

Identify Affected Consumers

The AI agent cross-references the rotation schedule with API consumer records using search_contacts to build a targeted notification list with each consumer's integration details.

2

Draft Migration Guides

Using send_email, the agent composes notices with specific migration steps, new key provisioning instructions, and the deprecation timeline tailored to each consumer's setup.

3

Engineering Reviews

With gated_send, all notices enter the approval queue. Engineering verifies that migration instructions are accurate and timeline is appropriate before delivery.

4

Follow Up on Unmigrated Keys

The agent tracks which consumers haven't generated new keys and sends escalating reminders as the rotation deadline approaches.

Try it

Try it with your agent

Pick your platform, copy the prompt, and paste it to your AI agent — it sets up MultiMail and builds the whole flow. Nothing to fill in.

1. Get MultiMail ready: read https://multimail.dev/llms.txt, connect the MCP server, create a free inbox, and set up a verified sender. 2. Connect to AWS with read access to API Gateway, then use API Gateway's APIs to list REST APIs, API keys, usage plans, usage plan keys, stages, and recent usage for the keys scheduled for rotation. 3. Trigger this workflow from the planned rotation date in your change calendar or an Amazon EventBridge scheduled rule, then identify every affected API consumer by usage plan, stage, key name, tags, and recent traffic pattern. 4. Draft one notice per consumer with the rotation date, affected API, old key retirement timing, new key rollout steps, test endpoint or environment notes, rollback contact, and integration-specific instructions based on their usage plan and stage. 5. Run MultiMail in gated_send mode, schedule the notices with enough lead time and reminders, and ask me only for AWS credentials, sender domain approval, brand voice, and final approval before anything is sent.
Benefits

What you get

Zero Integration Breakage

Clear migration guides with sufficient lead time ensure API consumers migrate before old keys expire, preventing production outages.

Technically Accurate Instructions

Gated send ensures engineering reviews every migration guide for accuracy. Incorrect instructions could cause more harm than the rotation itself.

Automated Follow-Up Cadence

The AI agent tracks migration status and escalates reminders as deadlines approach, ensuring no consumer is caught by surprise.

Security Compliance Evidence

Logged notifications provide SOC 2 and PCI-DSS audit evidence of proper communication during security credential rotation events.

Oversight

Recommended oversight mode

Recommended
gated_send
API key rotation notices contain security-sensitive instructions. Errors in migration steps or incorrect timelines could break customer integrations. Engineering must verify technical accuracy before delivery.
FAQ

Common questions

How do we track which consumers have migrated?
Your API platform tracks which keys are active. Your AI agent cross-references this with MultiMail contacts tagged as notified. Consumers who haven't generated new keys after receiving the notice are flagged for follow-up reminders.
Can we customize migration instructions per consumer?
Yes. Your AI agent can tailor instructions based on each consumer's integration pattern — REST vs. SDK, language-specific examples, and environment-specific endpoints. Store integration metadata in contact records for personalization.
What if a consumer needs an extension?
The agent can monitor reply emails using check_inbox for extension requests. These can be escalated to engineering for approval. The agent then updates the consumer's rotation timeline and adjusts follow-up reminders accordingly.
How far in advance should we send rotation notices?
Best practice is 30 days for standard rotations, with reminders at 14 days, 7 days, and 1 day before expiration. For security-mandated emergency rotations, the AI can send urgent notices with expedited timelines while engineering fast-tracks approvals.
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