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AI Contributor Weekly Summary – 16 September 2026

This week’s meeting covered the markdown feeds experiment for the AI pluginPlugin A plugin is a piece of software containing a group of functions that can be added to a WordPress website. They can extend functionality or add new features to your WordPress websites. WordPress plugins are written in the PHP programming language and integrate seamlessly with WordPress. These can be free in the WordPress.org Plugin Directory https://wordpress.org/plugins/ or can be cost-based plugin from a third-party., PHPPHP PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML. https://www.php.net/manual/en/index.php AI Client 1.5.0 progress (embedding validation and closing out the embeddings tracking issue), outstanding PHP AI Client web search issues with the Anthropic providerProvider An AI service offering models for generation, embeddings, or other capabilities (e.g., Anthropic, Google, OpenAI)., an MCP AdapterMCP Adapter Translates WordPress abilities into Model Context Protocol format, allowing AI assistants like Claude and ChatGPT to discover and invoke WordPress capabilities as tools, resources, and prompts. update, and facilitator coverage for this week’s office hours.

AI Plugin: Markdown Feeds Experiment

@dkotter reopened work on markdown support for the AI plugin after an earlier attempt stalled. The current approach supports both dedicated markdown URLs/feeds and content-negotiation headers, so AI clients can request a markdown version of a post either way. @jeffpaul and @jason_the_adams agreed the decision carries little risk, since it targets AI consumers rather than end users and remains easy to adjust later. The team aligned on matching WordPress.orgWordPress.org The community site where WordPress code is created and shared by the users. This is where you can download the source code for WordPress core, plugins and themes as well as the central location for community conversations and organization. https://wordpress.org/’s existing URLURL A specific web address of a website or web page on the Internet, such as a website’s URL www.wordpress.org format where practical.

PHP AI Client 1.5.0 and Embeddings

Embedding Validation: A PR from @htperkins adds a type/finite check to guard against invalid values passed into embeddings. @dkotter flagged that iterating every array item could add processing overhead at scale (e.g., generating embeddings across 100,000 posts); the team agreed the check should fold into the existing is_embedding_list validation rather than run as a separate pass.

Embeddings Tracking Issue: @jeffpaul reviewed the original embeddings epic to confirm nothing critical is missing ahead of 1.5.0. Provider implementations, CLICLI Command Line Interface. Terminal (Bash) in Mac, Command Prompt in Windows, or WP-CLI for WordPress. support, and integration test coverage are already accounted for. @laurisaarni noted he has an in-progress Mistral provider PR for embeddings, currently blocked pending the 1.5.0 release. The team agreed to close the tracking issue alongside the release, with any remaining work split into separate follow-up issues.

PHP AI Client Web Search / Anthropic Provider Issues

@laurisaarni shared feedback from building with the Anthropic provider’s web search support, having documented several issues in SlackSlack Slack is a Collaborative Group Chat Platform https://slack.com/. The WordPress community has its own Slack Channel at https://make.wordpress.org/chat/: message parts can’t represent source annotations, citation URLs returned by the provider are difficult to retrieve, and there’s no way to limit the number of searches per round trip. @jason_the_adams suggested adding a formal “max searches” property to the web search tool DTO if it’s a common pattern across providers, otherwise falling back to a generic key/value passthrough for provider-specific options. @laurisaarni volunteered to open PRs to address these.

Model Context Protocol (MCP) Development

@ovidiu-galatan gave a progress update on reworking the PHP-MCP schema to version 0.2.0 to support the newer MCP protocol while preserving backward compatibility through client/server version negotiation. Three PRs are in progress and under review with @justlevine. @laurisaarni reported building a developer MCP serverMCP Server Exposes tools, resources, and prompts according to Model Context Protocol specification. WordPress can run multiple MCP servers with different configurations. on the adapter that’s running smoothly in production, working around a GutenbergGutenberg The Gutenberg project is the new Editor Interface for WordPress. The editor improves the process and experience of creating new content, making writing rich content much simpler. It uses ‘blocks’ to add richness rather than shortcodes, custom HTML etc. https://wordpress.org/gutenberg/ blockBlock Block is the abstract term used to describe units of markup that, composed together, form the content or layout of a webpage using the WordPress editor. The idea combines concepts of what in the past may have achieved with shortcodes, custom HTML, and embed discovery into a single consistent API and user experience.-validation limitation by pairing a Node-based MCP adapter with the PHP adapter over REST.


Upcoming Meetings

  • Contributors are welcome to join the weekly AI contributor call. All team meeting schedules are published on the WordPress Meeting Calendar.
  • AI Team Office Hours: Thursday, September 17, 2026 at 17:00 UTC. Facilitator: