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' — keep the title the same but make sure it's wrapped in the site template."},{"title":"Push edited blog post content","prompt":"I've revised my blog post — please replace the content at slug 'weekly-update-june' with this new markdown: '# June Update\\nThis week we shipped three new features...' and update the title to 'June Weekly Update — Revised'."},{"title":"Apply new CSS styles to existing site","prompt":"Keep the content of my site at slug 'portfolio-v2' the same but update the CSS to: 'body { font-family: sans-serif; background: #f9f9f9; }' and re-render it."}],"resultDescription":"Returns an object confirming the update was applied to the slug, including the refreshed site metadata. The Markdown-to-HTML pipeline is re-run, the template wrapper is re-applied if applicable, and the visit counter expiration is reset.","failureModes":["Slug not found — returns 404 if the specified slug does not exist","Unauthorized — returns 403 if the caller is not the owner of the slug","Content too large — returns 400 if content exceeds 1MB limit","Invalid format value — returns 400 if format is not 'html' or 'markdown'","CSS too large — returns 400 if CSS exceeds 50,000 character limit","Missing required content field — returns 400 if content is omitted"],"whenToPreferThis":"Use this endpoint when you need to update the content of an already-published site without changing its URL slug. Prefer this over deleting and recreating a site when you want to preserve the existing slug, URL, visit counter history, or custom domain mappings. Ideal for iterative content updates, editorial revisions, or programmatic content refreshes on a live page.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T21:36:58.009Z","isFirstParty":true,"canonicalSlug":"site-withzero-ai-update-hosted-site-content-by-slug-d4cbd0c7"}