docs: Add web search capability to PostHog AI documentation

[inkeep]

Summary

Documents the web search capability that is now generally available in PostHog AI following the removal of the phai-web-search feature flag.

Related PR: PostHog/posthog#49306

Changes

contents/docs/posthog-ai/overview.mdx

• Added "Search the web" to the introductory capabilities list
• Added web search to the "superpowers" list that differentiates PostHog AI from other agents

contents/docs/posthog-ai/modes.mdx

• Added web_search tool to the "Default tools (available in all modes)" table

Why

PR #49306 removed the phai-web-search feature flag, making web search available to all PostHog AI users. This capability allows users to search the web for additional context about their product, company, or industry directly within PostHog AI conversations.

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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.

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Deploy preview

Status	Details	Updated (UTC)
🟢 Ready	View preview	Mar 02, 2026 09:16PM

[github-actions]

Vale prose linter → found 9 errors, 20 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/posthog-ai/modes.mdx — 9 errors, 12 warnings, 0 suggestions

Line	Severity	Message	Rule
21:1	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
21:149	warning	Capitalize 'Product Analytics' for PostHog's product. Use 'Product analytics' for the general industry concept.	PostHogBase.ProductNames
23:1	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
32:5	warning	'Product analytics' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
32:5	warning	Capitalize 'Product Analytics' for PostHog's product. Use 'Product analytics' for the general industry concept.	PostHogBase.ProductNames
42:19	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
43:42	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
44:17	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
52:18	warning	Capitalize 'Data Warehouse' for PostHog's product. Use 'data warehouse' for the general industry concept.	PostHogBase.ProductNames
57:16	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
59:5	warning	Capitalize 'Session Replay' for PostHog's product. Use 'Session replay' for the general industry concept.	PostHogBase.ProductNames
59:5	warning	'Session replay' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
70:30	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
71:23	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
73:5	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'Error tracking' for the general industry concept.	PostHogBase.ProductNames
73:5	warning	'Error tracking' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
83:33	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
83:54	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'error tracking' for the general industry concept.	PostHogBase.ProductNames
92:22	warning	Capitalize 'Data Warehouse' for PostHog's product. Use 'data warehouse' for the general industry concept.	PostHogBase.ProductNames
94:61	warning	Capitalize 'Experiments' for PostHog's product. Use 'experiments' for the general industry concept.	PostHogBase.ProductNames
94:74	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames

contents/docs/posthog-ai/overview.mdx — 0 errors, 8 warnings, 0 suggestions

Line	Severity	Message	Rule
13:133	warning	Capitalize 'Surveys' for PostHog's product. Use 'surveys' for the general industry concept.	PostHogBase.ProductNames
39:4	warning	'Does PostHog AI have any superpowers compared to ChatGPT and similar agents?' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
50:11	warning	Capitalize 'Surveys' for PostHog's product. Use 'surveys' for the general industry concept.	PostHogBase.ProductNames
57:11	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames
57:52	warning	Capitalize 'Experiments' for PostHog's product. Use 'experiments' for the general industry concept.	PostHogBase.ProductNames
80:3	warning	Capitalize 'Data Warehouse' for PostHog's product. Use 'Data warehouse' for the general industry concept.	PostHogBase.ProductNames
91:18	warning	'subprocessors' is a possible misspelling.	PostHogBase.Spelling
95:35	warning	'subprocessors' is a possible misspelling.	PostHogBase.Spelling