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Codex + Wahlu

Post to Facebook from Codex with Wahlu

Connect Codex to Wahlu once, then plan, draft and schedule posts for Facebook Pages connected to Wahlu from the Codex CLI, IDE extension and app. Every schedule can wait for your approval.

Connect CodexAll Codex options
What Codex can prepare on Facebook

  • Page post

    One image or video with a caption.

  • Reel

    One vertical video.

  • Story

    One image or video. Stories don't take a caption.

Ask Codex for Facebook posts

Example prompts and the steps to expect. These are illustrations, not recorded conversations.

Example prompt

“Summarise the changes in this branch as a Facebook Page post for customers, not developers. Use the hero image at its public link and hold the schedule for review.”

Example prompt

“Draft a Facebook Reel from the walkthrough video linked in the changes in this branch, then run a readiness check and tell me what needs fixing.”

Example prompt

“Before drafting anything about the changes in this branch, show me what's already on the Facebook calendar this week.”

What Wahlu does on Facebook

Codex works through Wahlu's tools, so it can set the Facebook options Wahlu supports.

Facebook settings on a draft

Post type
Page post, Reel or Story.

Wahlu posts to Facebook Pages, not personal profiles or groups, and a Page post carries one image or video rather than an album.

The tool calls, in order

  1. 01

    list_targetsFinds the brand's connected Facebook account and checks it's ready.

  2. 02

    upload_media, import_media_from_url or list_mediaBrings in the image or video, or picks one from your media library.

  3. 03

    create_draftCreates the draft with its caption and facebook_settings, such as the post type.

  4. 04

    preflight_draftChecks the draft against Facebook's rules without changing it.

  5. 05

    create_schedulePuts it on the calendar at pending_review, held for your approval.

Facebook limits to know

Wahlu checks these before a post is scheduled, so the agent finds out early.

Getting images and video to Facebook

The agent can read a file in your project and upload it with upload_media. Files over 8 MB, including most video, go to a short-lived upload link the agent sends the file to. Public links and your media library work too.

Connect Codex to Wahlu

Set this up once and Codex can work on every network you've connected, not just Facebook.

  1. 1

    Run codex mcp add to add Wahlu. It's saved in ~/.codex/config.toml, which the Codex CLI, IDE extension and app share.

  2. 2

    Run codex mcp login wahlu and sign in to Wahlu in the browser that opens.

  3. 3

    Start a new Codex session so it picks up Wahlu's tools.

Checked against the Codex docs on 27 September 2026. Menus can change; if a step doesn't match what you see, follow the vendor's current instructions.

Add Wahlu to Codex
codex mcp add wahlu --url https://mcp.wahlu.com/mcp
codex mcp login wahlu

In the Codex IDE extension or app you can add it from the gear menu instead: MCP servers → Add server, choose Streamable HTTP and paste the URL, then restart. Codex signs in with a Client ID Metadata Document, which is what Wahlu uses.

You stay in control.

Every Wahlu plan includes agent access, through MCP and the API. You choose the workspace, brands and permissions each connection gets, and can disconnect it at any time.

Held until you approve

Agents create schedules at pending_review unless you've told them to publish. A held schedule can't publish until you approve it in the Wahlu calendar.

Publishing is its own permission

Publish to social accounts is separate from Manage your schedule. Leave it unticked and nothing your agent schedules can go out on its own.

Checked before it's scheduled

preflight_draft reports anything that would stop a post, such as media the network won't accept or a caption that's too long, without changing anything.

Some things stay in the app

Queues, general edits to existing drafts, approvals and connecting social accounts happen in the Wahlu app, not through your agent.

Keep going

Your next Facebook post, drafted by Codex.

Connect your Facebook account in Wahlu, then give Codex a specific brief.

Open WahluAll Codex options