docs: Add Aiven data warehouse source documentation

[inkeep]

Changes

Adds user-facing documentation for the Aiven data warehouse source at contents/docs/cdp/sources/aiven.md.

This documentation corresponds to the Aiven source implementation merged in PostHog/posthog#70009.

What's documented

• Source overview: Aiven connector syncs projects, services, organizations, and billing data into PostHog
• Setup instructions: How to create an API token from the Aiven profile authentication page, with note about organization-level read access needed for billing/membership tables
• Available tables: All 9 tables (projects, organizations, services, billing_groups, invoices, invoice_lines, organization_users, user_groups, clouds)
• Sync limitations: Explains why all tables use full refresh only (Aiven API doesn't support pagination or timestamp filters)

Notes

• sourceId: Aiven matches the source registration so <SourceParameters /> and <SourceTables /> components render correctly
• Source is in alpha release status per the implementation
• clouds table is noted as off by default (matches should_sync_default=False in the implementation)

---

This PR was created by the Inkeep Content Writer agent, which is maintained by the Docs and Wizard team. Please reach out on Slack for help if needed.

[github-actions]

Deploy preview

Status	Details	Updated (UTC)
🟢 Ready	View preview	Jul 15, 2026 10:50PM

[github-actions]

Vale prose linter → found 2 errors, 13 warnings, 0 suggestions in your markdown

Full report → Copy the linter results into an LLM to batch-fix issues.

Linter being weird? Update the rules!

contents/docs/cdp/sources/aiven.md — 2 errors, 13 warnings, 0 suggestions

Line	Severity	Message	Rule
2:16	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
18:5	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
18:117	warning	Capitalize 'Data Warehouse' for PostHog's product. Use 'data warehouse' for the general industry concept.	PostHogBase.ProductNames
23:59	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
24:31	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
28:50	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
34:26	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
34:41	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
35:26	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
35:46	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
36:34	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
40:40	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
42:33	warning	Use American English. Use 'catalog' instead of 'catalogue'.	PostHogBase.AmericanEnglish
42:46	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling
48:43	warning	'Aiven' is a possible misspelling.	PostHogBase.Spelling

[github-actions]

Bundle report

Total JS (gzip)

6.31 MiB (+0.2 KiB / +0.0%)

Eager graph (modules shipped in each entrypoint's initial chunks)

Entrypoint	Eager size	Budget	Modules
✅ app	15.60 MiB (+2.0 KiB / +0.0%)	report-only	1945

Largest modules in the app closure

Module	Size
css ./node_modules/.pnpm/css-loader@5.2.7_webpack@5.101.3/node_modules/css-loader/dist/cjs.js??ruleSet[1].rules[8].oneOf[1].use[1]!./node_modules/.pnpm/postcss-loader@4.3.0_postcss@8.5.6_webpack@5.101.3/node_modules/postcss-loader/dist/cjs.js??ruleSet[1].rules[8].oneOf[1].use[2]!./src/styles/global.css	711.1 KiB
./src/components/Stickers/Stickers.tsx	696.4 KiB
./.cache/caches/gatsby-plugin-mdx/mdx-scopes-dir/31a094f140f119e73085d847ae81b99b.js + 2 modules	629.3 KiB
./node_modules/.pnpm/@radix-ui+react-icons@1.3.2_react@18.3.1/node_modules/@radix-ui/react-icons/dist/react-icons.esm.js	481.4 KiB
./node_modules/.pnpm/rehype-raw@7.0.0/node_modules/rehype-raw/lib/index.js + 29 modules	395.1 KiB
./node_modules/.pnpm/@posthog+icons@0.36.6_react-dom@18.3.1_react@18.3.1__react@18.3.1/node_modules/@posthog/icons/dist/posthog-icons.cjs.js	364.8 KiB
./src/hooks/useCustomers.tsx + 54 modules	355.1 KiB
./node_modules/.pnpm/@posthog+icons@0.36.6_react-dom@18.3.1_react@18.3.1__react@18.3.1/node_modules/@posthog/icons/dist/posthog-icons.es.js	354.8 KiB
./node_modules/.pnpm/react-markdown@8.0.7_@types+react@16.14.66_react@18.3.1/node_modules/react-markdown/lib/react-markdown.js + 88 modules	351.4 KiB
./node_modules/.pnpm/cloudinary-core@2.14.0_lodash@4.17.21/node_modules/cloudinary-core/cloudinary-core.js	281.9 KiB
./src/components/ProductComparisonTable/index.tsx + 120 modules	278.5 KiB
./node_modules/.pnpm/d3@7.9.0/node_modules/d3/src/index.js + 208 modules	247.4 KiB
./src/components/Pricing/PricingSlider/Slider.tsx + 87 modules	239.9 KiB
./gatsby-browser.tsx + 41 modules	239.8 KiB
./src/components/SearchUI/index.tsx + 73 modules	223.4 KiB

---

Eager-graph budgets are report-only until a baseline is established. Sizes are gzip of public/**/*.js; eager size is webpack module source bytes for the modules actually shipped in the entrypoint's initial chunks (post-tree-shake).

[github-actions]

Hey @Gilbert09! This docs PR was generated for you by an agent. You're responsible for reviewing and merging it into production.

1. Review and approve the PR
2. Merge the PR
   a. Check the preview env and CI build and merge it yourself
   b. Enable auto-merge if you're confident in the changes