TINYDOC-3571 - Add the Build with AI page for the agent skill and documentation MCP server

[kemister85]

Ticket: TINYDOC-3571

Related: TINYDOC-3572 (the tinymce/skills repository this page documents), TINYDOC-3568 / docs-antora-ui#44 (the Ask AI widget half)

Site: Staging branch

Changes:

• Added modules/ROOT/pages/ai-coding-agents.adoc — a new Getting started page covering both halves of agent support: the official TinyMCE agent skill (npx skills add tinymce/skills) and the documentation access surfaces.
• Skill sections: what the skill does, supported agents, and alternative install paths (Claude Code plugin marketplace, manual copy).
• Documentation access sections: the hosted Kapa MCP server (https://tinymcedocs.mcp.kapa.ai) with per-agent configuration for Claude Code, Cursor, Codex, Visual Studio Code and OpenCode; the markdown form of every page; and the llms.txt / llms-full.txt files.
• Added a nav entry under Getting started, after Upgrading TinyMCE, and a third cell in the Getting started index table.

This is the documentation half of the AI widget MCP work. The other half is docs-antora-ui#44, which enables the Use MCP menu in the Ask AI widget; the page's "Install from the documentation site" section describes that menu and goes live when the UI bundle redeploys.

Important

Do not merge before tinymce/skills is public (TINYDOC-3572). The page documents npx skills add tinymce/skills and /plugin marketplace add tinymce/skills. Both git-clone the repository, so while it is private they fail for anyone outside the org. The repository, its manifests, and the release tags are ready; only the visibility switch is outstanding.

Notes for review:

• Every command on the page has been run end to end against the live repository — npx skills add tinymce/skills installs the skill, and the MCP endpoint responds.
• Verified against production: .md pages are served for every documented major version (/5/, /6/, /7/, /latest/), so the page documents version-segmented markdown rather than scoping it to latest.
• Verified the MCP endpoint is OAuth-protected via Kapa's public authorization server. The page does not name specific SSO providers, since that could not be confirmed.
• The Accept: text/markdown header is not supported by our docs site, so only the index.md URL form is documented.
• The IMPORTANT admonition about configuration files not being interchangeable comes from a real failure during testing: claude mcp add writes .mcp.json, which VS Code does not read, and the result is valid JSON with no error and no tools.
• Version scoping of the MCP server itself is not addressed, matching the open question in docs-antora-ui#44.

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Pre-checks:

• Branch is correctly prefixed:

• Feature: feature/<version>/DOC-XXXX (e.g., feature/8.0.0/DOC-1234)

• Hotfix: hotfix/<version>/DOC-XXXX (e.g., hotfix/8.0.0/DOC-1234)

• EPIC: release/<ver> (e.g., release/8.0.0 for major releases)

• modules/ROOT/nav.adoc has been updated (if applicable).

• Files have been included where required (if applicable).

• Files removed have been deleted, not just excluded from the build (if applicable).

• Files added for New product features include a release note entry.

• Major or minor version changes have updated the supported-versions.adoc table.

• Build passes without console errors, warnings, or issues.

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Review:

• Documentation Team Lead has reviewed.