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Gemini CLI + Wahlu

Post to Tumblr from Gemini CLI with Wahlu

Connect Gemini CLI to Wahlu once, then plan, draft and schedule posts for Tumblr blogs you can post to, one blog per connection from the Gemini CLI terminal. Every schedule can wait for your approval.

Connect Gemini CLIAll Gemini CLI options
What Gemini CLI can prepare on Tumblr

  • Text post

    Your words, with an optional title and link card.

  • Photo post

    1 to 10 photos, JPEG, PNG or GIF, up to 10 MB each, with alt text.

  • Video post

    One MP4 or MOV video, up to 100 MB.

Ask Gemini CLI for Tumblr posts

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

Example prompt

“Read the README in this project and write a Tumblr post about the release with a link card and tags. Hold it for review tomorrow at 9am.”

Example prompt

“Create a Tumblr photo post from the screenshots in docs/launch for the README in this project, with alt text for each, then run a readiness check.”

Example prompt

“Check whether anything is already scheduled on Tumblr this week before you draft a post about the README in this project.”

What Wahlu does on Tumblr

Gemini CLI works through Wahlu's tools, so it can set the Tumblr options Wahlu supports.

Tumblr settings on a draft

Post type
Text, photo or video.
Title and link
An optional heading and a link shown as a card.
Tags
Up to 30 tags, without the #.
Alt text
A description of each photo for screen readers.

Tumblr only allows posts a person makes or schedules, so confirm each post; looping queues and Autopilot don't post to Tumblr. Reblogs aren't available, and Tumblr has no Insights in Wahlu.

The tool calls, in order

  1. 01

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

  2. 02

    upload_media_from_file, 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 tumblr_settings, such as the post type.

  4. 04

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

  5. 05

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

Tumblr limits to know

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

Getting images and video to Tumblr

The local server can upload a file straight from your computer with upload_media_from_file, so screenshots and videos in your project don't need a public link.

Connect Gemini CLI to Wahlu

Set this up once and Gemini CLI can work on every network you've connected, not just Tumblr.

  1. 1

    In the Wahlu app, create an API key under Settings → API Keys in your workspace, with only the permissions and brands you need.

  2. 2

    Add export WAHLU_API_KEY=your-key to your shell profile, with your key, and open a new terminal.

  3. 3

    Add the Wahlu configuration to ~/.gemini/settings.json. If the file already has settings, add wahlu inside its mcpServers object.

  4. 4

    Start a new Gemini CLI session and run /mcp to check that wahlu is connected and its tools are listed.

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

~/.gemini/settings.json
{
  "mcpServers": {
    "wahlu": {
      "command": "npx",
      "args": ["-y", "@wahlu/mcp-server@latest"],
      "env": {
        "WAHLU_API_KEY": "$WAHLU_API_KEY"
      }
    }
  }
}

Gemini CLI replaces $WAHLU_API_KEY with the value from your shell, so the key isn't saved in the settings file. You can also add the same configuration to a project's .gemini/settings.json to use Wahlu in that project only. Available local tools depend on the installed version. Check the local MCP server notes for its Node.js requirement and tool availability.

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 Wahlu or ask an agent with Publishing permission to approve it.

Publishing is its own permission

Publishing 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

Use the app for queues, draft media and platform settings, and connecting social accounts. Agents can change the name or caption of an unused draft and approve held schedules with the right permissions.

Keep going

Your next Tumblr post, drafted by Gemini CLI.

Connect your Tumblr account in Wahlu, then give Gemini CLI a specific brief.

Open WahluAll Gemini CLI options