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WordPress~4 minBeginner

Install your Agentic Kit on WordPress

This guide walks you through uploading the three files (agents.json, llms.txt, agent-instructions.md) to the root of your WordPress site so they are served at https://your-site.com/agents.json and so on.

You do not need FTP, code, or to touch your theme. We use the free WP File Manager plugin.

Step 1 — Install the WP File Manager plugin

  1. Log in to your WordPress admin (/wp-admin).
  2. In the sidebar go to Plugins → Add New.
  3. Search for "WP File Manager" by mndpsingh287.
  4. Click Install Now, then Activate.

Don't want a plugin long-term? You can uninstall WP File Manager after the upload — your files stay in place.

Step 2 — Open the file manager

  1. A new menu item called WP File Manager appears in your sidebar.
  2. Click it. You'll see your WordPress install root.

You are in the right place if you can see these items at the top level:

  • wp-config.php
  • wp-login.php
  • index.php
  • folders: wp-admin/, wp-content/, wp-includes/

Stay at this level. Do not enter wp-content/, wp-content/uploads/, or any other subfolder. The files must sit next to wp-config.php.

Step 3 — Upload the three files

  1. Click the Upload button in the toolbar.
  2. Drag in (or browse to) all three files from the ZIP you downloaded:
    • agents.json
    • llms.txt
    • agent-instructions.md
  3. Wait for the green checkmark on each upload.

Step 4 — Verify

In a new browser tab, visit each URL:

  • https://your-site.com/agents.json → should display JSON starting with {
  • https://your-site.com/llms.txt → should display plain text
  • https://your-site.com/agent-instructions.md → should display markdown

If you see all three, you're done.

Step 5 (recommended) — Add the auto-discovery snippet

Tell visiting AI bots exactly where to find these files. In WordPress:

Option A — Theme editor. Appearance → Theme File Editor → header.php. Find the closing </head> tag and paste this immediately before it:

<link rel="alternate" type="application/json" title="Agent Action Map" href="/agents.json">
<link rel="alternate" type="text/plain" title="LLM Context" href="/llms.txt">
<link rel="alternate" type="text/markdown" title="Agent Runbook" href="/agent-instructions.md">

Option B — Plugin (no code). Install "Insert Headers and Footers" by WPCode. Settings → Insert Headers and Footers → paste the snippet into the Scripts in Header box → Save.

Troubleshooting

404 on the URL. The file is not at the root. Re-check via WP File Manager: the file must sit next to wp-config.php, not inside wp-content/.

403 forbidden. Permissions issue. Right-click the file in WP File Manager → File Permissions → set to 644.

Security plugin blocks .json / .md access. If you use Wordfence, iThemes Security, or All in One WP Security, add agents.json, llms.txt, and agent-instructions.md to the plugin's allow-list under "Firewall" or "Live Traffic" exceptions.

Theme update wipes my header changes. Use a child theme, or use the Insert Headers and Footers plugin (Option B above) which survives theme updates.

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