Connect Codex to Meta Ads with LoomaScale
Connect OpenAI Codex to Meta Ads by installing the LoomaScale plugin with two terminal commands and signing in once in your browser. Codex can then review Facebook and Instagram campaigns, ad sets and placements, and make the changes you ask for inside your spend cap. No Meta app, access token or config file is needed.
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Connection overview
- Connect Meta Ads in LoomaScale and set a daily spend cap.
- In your terminal, run codex plugin marketplace add loomascale/agent-plugin.
- Run codex plugin add loomascale@loomascale.
- Run codex mcp login loomascale and sign in to LoomaScale in your browser.
- Start Codex, check the account with a read-only prompt, then run a wasted-spend review.
What you need before you start
- The Codex CLI with plugin support. If codex plugin is not recognized, update Codex first.
- A LoomaScale account with Meta Ads connected and a daily spend cap configured.
- Access to the Meta ad account. Creating ads also requires access to the relevant Facebook Page and any Instagram identity you use.
First, connect your Meta ad account in LoomaScale
Open Connections in LoomaScale, connect Meta Ads, and authorize your Meta login. Select the correct default ad account and set its daily spend cap. Note the ad account ID. Facebook and Instagram ads both run through Meta ad accounts.
Open LoomaScale connectionsConnect Codex, step by step
Add the LoomaScale plugin marketplace
In your terminal, run the command below. It registers LoomaScale’s public plugin repository on GitHub as a Codex marketplace, so Codex can find the plugin. Nothing is installed yet.
codex plugin marketplace add loomascale/agent-plugin
Install the plugin
Run the install command. Codex adds the LoomaScale MCP server and its skills for waste audits, performance reviews, budget pacing, campaign launches, conversion tracking audits and scheduled checks. Start a new Codex session afterwards so it loads them.
codex plugin add loomascale@loomascale
Sign in to LoomaScale
Run the login command. Your browser opens LoomaScale’s consent screen: sign in with the account that holds your Meta Ads connection and choose Allow. The screen names localhost as the destination because Codex receives the sign-in on your own computer. The terminal confirms when you are logged in. You never paste a password or access token into Codex.
codex mcp login loomascale
Check your Meta ad account
Start Codex and send the read-only test prompt below. Codex calls LoomaScale and returns your ad account ID, currency and campaigns. With more than one ad account, name the one you mean in each request.
Use LoomaScale to show my default Meta ad account name, account ID and currency, then list its campaigns and statuses. Read only: do not create or change anything.
Run a wasted-spend review
Ask for a wasted-spend review. Codex reads spend and results by campaign, ad, placement and age through LoomaScale, and ranks findings by money lost. It changes nothing unless you ask. Check which event each ad set optimizes for: a cheap result is only useful if it leads to revenue.
Analyze my active Meta Ads campaigns for wasted spend
A real Meta Ads wasted-spend review in Codex through LoomaScale. Results depend on your account and data.
Add the MCP server without the plugin
Prefer to manage MCP servers yourself? Run this command instead of steps 1 and 2, then sign in with codex mcp login loomascale as in step 3. You get the LoomaScale tools without the plugin’s skills.
codex mcp add loomascale --url https://api.loomascale.com/mcp
What Codex can do with your connected account
Review campaigns and ad sets
Compare spend, results and cost per result. Group comparable objectives: results from different campaign objectives are not interchangeable.
Investigate creative fatigue
Compare creatives using frequency, click-through rate and cost per result. Separate observed performance changes from possible explanations.
Compare Facebook and Instagram placements
Use available placement breakdowns to compare delivery and results. Flag limited data before recommending changes.
Prepare requested campaign changes
With write and asset permissions, request campaign drafts, ad sets or budget changes. New campaigns start paused; spending changes must fit your daily cap.
Three read-only prompts to try next
Find ad sets needing attention
Review my default Meta ad account for the last 30 days. Show spend, results and cost per result by ad set. Group comparable objectives and identify three issues to investigate. Make no changes.
Check for creative fatigue
Compare the last 7 complete days with the previous 7 for my Meta ads. Find rising frequency alongside falling click-through rate or increasing cost per result. Suggest creative tests without changing ads.
Compare placement performance
Compare Facebook and Instagram placements for the last 30 days using available breakdowns. Show spend, results and cost per result, flag limited data, and suggest tests. Do not change targeting or budgets.
If the connection does not work
codex plugin is not recognized.
Update the Codex CLI to the latest version and run the marketplace command again. Plugin commands need a recent Codex release.
The marketplace or install command fails.
Check the exact names: the marketplace is loomascale/agent-plugin and the plugin is loomascale@loomascale. Make sure your network can reach github.com.
Codex says loomascale is not logged in.
Run codex mcp login loomascale again and finish the sign-in in your browser. Check the status with codex mcp list, then start a new Codex session.
Authorization finishes but Meta Ads is missing.
Confirm Meta Ads is connected in LoomaScale under the login used in Codex. If you authorized another LoomaScale account, reconnect with the correct login.
I see the wrong ad account or an access error.
Compare the ad account ID. Select the correct default or specify the ID. If Meta permissions were removed, restore access and reconnect Meta Ads.
Campaign reporting works but creating ads fails.
Check write permissions and Facebook Page or Instagram identity access. Reporting access is insufficient for creating ads. Review errors for missing assets or spending above your daily cap.
Frequently asked questions
How does Codex connect to Meta Ads?
The LoomaScale plugin adds LoomaScale’s remote MCP server to Codex. After you sign in with OAuth, Codex calls its tools to read your connected Meta Ads accounts or make supported changes, within the permissions and daily spend cap you set in LoomaScale.
How is this different from the ChatGPT app?
The LoomaScale app works inside ChatGPT on the web and in the ChatGPT apps. The Codex plugin works in your terminal and adds skills for audits, pacing and launches. Both use the same LoomaScale account and ad connections.
Does it cover Instagram ads?
Yes. Instagram ads run through Meta ad accounts, so Codex reads them with your Facebook campaigns and can compare placements across both.
Do I need a Meta app or access token?
No. LoomaScale hosts the connection and uses your Meta authorization. There is no Meta developer app, token or config file.
Is connecting Codex to Meta Ads free?
LoomaScale offers a 14-day free trial without a card. Codex needs its own ChatGPT plan or OpenAI API billing. Meta bills your advertising spend separately.
Can Codex change campaigns or budgets?
Yes, when you ask. Codex asks for approval before each change, then LoomaScale checks it against your daily spend cap. New campaigns start paused. Use read-only prompts for analysis.
Related guides
Start with your own campaign data
Connect your ad account, install the LoomaScale plugin in Codex, and run a waste audit. Try LoomaScale free for 14 days; no card required.
Connect an ad accountConnect your assistant to your ad platform
LoomaScale runs inside the assistant you already use. Pick the pair you work with; each guide takes about five minutes.
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