See it in action

You say

I need to make an API call to list my Mailtrap contact lists. How should I set up the auth headers and the account ID in the URL?

Your agent does

To list contact lists, use the account-scoped endpoint.

Fetch your ID: export MAILTRAP_ACCOUNT_ID=$(curl -s https://mailtrap.io/api/accounts -H "Authorization: Bearer $MAILTRAP_API_TOKEN" | jq '.[0].id')
Request: GET https://mailtrap.io/api/accounts/$MAILTRAP_ACCOUNT_ID/contacts/lists

About this skill

A reference skill for any agent working with the Mailtrap API. Covers the two accepted auth header formats (Bearer and Api-Token), how to scope tokens to the minimum required surface (transactional, bulk, sandbox, account-level), where to store tokens safely across environments (local dev, CI, production), and a one-liner to resolve account_id dynamically so it never gets hardcoded. Includes a common-mistakes table covering the most frequent auth failures.