Account-level administration: plan and contact details, API health, app authorizations, verified sending domains, batch jobs, connected sites, and the account activity feed. Set action to one of: ping (verify the API key works); overview (plan, contact, total subscribers, industry benchmarks); authorized_apps (apps with access to this account); authorized_app (one app, needs app_id); verified_domains (sending domains and their verification state); verified_domain (one domain, needs domain_name); batches (batch API jobs and status); batch (one batch job, needs batch_id); connected_sites (websites connected to the account); connected_site (one site, needs site_id); chimp_chatter (recent account-wide activity feed).

Search the account. The fastest way to turn an email address into a subscriber_hash, or a phrase into a campaign_id. Set action to one of: members (find subscribers across all audiences by email or name); campaigns (find campaigns by title, subject line, or content).

Audiences (lists) and their configuration and health: growth history, daily activity, email client and geographic breakdowns, spam complaints, signup forms, webhooks, and merge fields. Set action to one of: list (all audiences with member counts — start here for a list_id); details (full audience record with complete stats); growth_history (month-by-month subscriber growth); activity (recent daily subs, unsubs, opens, clicks); client_stats (which email clients members use); location_stats (geographic distribution of members); abuse_reports (spam complaints against this audience); signup_forms (configured signup forms); webhooks (registered webhooks); webhook (one webhook, needs webhook_id); merge_fields (custom subscriber attributes defined on the audience); merge_field (one merge field, needs merge_field_id).

Segments, tags, and interest groups within one audience, including which members belong to a segment. Set action to one of: segments (all segments and tags with member counts); segment (one segment with its matching conditions, needs segment_id); segment_members (members inside a segment or tag, needs segment_id); interest_categories (group titles defined on the audience); interest_category (one category, needs category_id); interests (groups inside a category, needs category_id); interest (one group, needs category_id and interest_id).

Subscribers in one audience and everything recorded about them: profile, tags, engagement history, custom events, staff notes, and goal events. Set action to one of: list (members newest-first; page with count and offset); details (full profile: merge fields, interests, stats, location, tags); tags (tags applied to the member); activity (last 50 campaign actions); activity_feed (complete paged activity history across channels); events (custom events recorded against the member); notes (staff notes on the member); note (one note, needs note_id); goals (site-activity goal events).

Campaigns and their configuration and content. For performance data use mailchimp_reports instead. Set action to one of: list (all campaigns newest-first — start here for a campaign_id); details (full campaign record with settings and recipients); content (rendered HTML and plain-text body); feedback (internal team comments); send_checklist (what is blocking the campaign from sending).

Campaign performance analytics: opens, clicks, unsubscribes, bounces, deliverability by domain, geography, per-member activity, and attributed revenue. Set action to one of: list (performance summary for every sent campaign); summary (full report for one campaign: opens, clicks, bounces, forwards, revenue, benchmarks); advice (Mailchimp's automated performance advice); opens (which members opened, and how often); clicks (per-link click totals); link_clickers (who clicked one link, needs link_id); unsubscribes (who unsubscribed and why); abuse_reports (spam complaints against the campaign); sent_to (every recipient with per-member open and click counts); domain_performance (deliverability broken down by recipient domain); locations (where opens came from geographically); eepurl (social sharing and archive-page stats); sub_reports (child reports for an A/B or multivariate campaign); email_activity (per-member action log with timestamps); subscriber_activity (one member's action log, needs subscriber_hash); product_activity (revenue and products attributed to the campaign).

Classic automations, their emails, and subscriber queues. Customer journeys are not exposed by the Mailchimp API. Set action to one of: list (all automations — start here for a workflow_id); details (full automation record including its report_summary); emails (emails in the automation, in send order); email (one automation email, needs email_id); queue (subscribers queued for an email, needs email_id); queue_subscriber (one queued subscriber, needs email_id and subscriber_hash); removed_subscribers (subscribers removed from the workflow).

Email templates available on the account. Set action to one of: list (all templates); details (full template record); default_content (the template's default section content).

File Manager assets and folders, plus campaign folders used to organize campaigns. Set action to one of: files (files stored in the File Manager); file (one file, needs file_id); folders (File Manager folders); folder (one File Manager folder, needs folder_id); campaign_folders (folders that organize campaigns); campaign_folder (one campaign folder, needs folder_id).

Landing pages and their published content. Set action to one of: list (all landing pages with status and URL); details (full landing page record); content (rendered HTML of the page).

Inbound replies from subscribers, tracked as conversations. Set action to one of: list (all conversations); details (full conversation record); messages (all messages in the conversation).

Connected e-commerce stores, and orders across every store. Start here for a store_id. Set action to one of: list (all connected stores); details (full store record, needs store_id); all_orders (orders across every store on the account).

Product catalog and variants for one e-commerce store. Set action to one of: list (products in the store); details (full product record with all variants, needs product_id); variants (variants of one product, needs product_id); variant (one variant, needs product_id and variant_id).

Orders and line items for one store, including the campaign each order is attributed to. Set action to one of: list (orders in the store with totals and attribution); details (full order record with line items, needs order_id); lines (line items only, needs order_id).

E-commerce customers for one store, with order counts and lifetime spend. Set action to one of: list (customers with orders_count and total_spent); details (full customer record, needs customer_id).

Abandoned and active shopping carts for one store, for abandoned-cart analysis. Set action to one of: list (carts in the store); details (full cart record, needs cart_id); lines (line items in the cart, needs cart_id).

Promotion rules and their promo codes for one store. Set action to one of: rules (promotion rules in the store); rule (one rule, needs promo_rule_id); codes (codes under a rule, needs promo_rule_id); code (one code, needs promo_rule_id and promo_code_id).