Why does creating a site or a goal fail?

Those changes go through Plausible’s Sites API, which needs a Sites API key; a Stats API key is refused for them. Reading statistics, sites and goals works with a Stats API key.

Deleting a site, a goal, a custom property or a guest, shared links, guests and tracker settings are left out on purpose. A statistics answer has at most 100 rows a page, and Plausible allows 600 requests an hour per key.

Does Codex see the password or key for Plausible?

No. The key for Plausible is pasted into Flowplane once and kept sealed there. Codex only gets a Flowplane sign-in for you, which you can revoke in the console.

Can Codex change things in Plausible without asking?

Not by default: every change in Plausible waits for your approval in the browser. Your workspace’s rules decide, per tool.

Connect Codex to Plausible

Codex reaches Plausible through one Flowplane address. You add Plausible once in Flowplane, add that address to Codex, and sign in. Ask your Plausible website statistics: visitors, top pages, sources, countries, devices and goal conversions, over any period.

Connect Plausible →Set up your assistant

Tools: 4 read · 3 change
Sign-in: One shared key
Approval, by default: Changes wait for you
MCP server: Flowplane’s tools

1
Add Plausible in Flowplane
In the Flowplane console, add Plausible, keep https://plausible.io or type the address of your own Plausible, and paste the API key. A self-hosted Plausible behind a firewall connects through a tunnel.
Plausible works with an API key, not a personal login. You make it in Plausible under your account settings, API keys, for the team that owns your sites, and the workspace pastes it once. A Stats API key reads statistics, sites and goals; adding or renaming a site or a goal needs a Sites API key. Flowplane keeps it sealed; the assistant never sees it.
Connect Plausible →
2
Add Flowplane to Codex
Your address is shown in the Flowplane console; it looks like
https://mcp.flowplane.eu/<your-label>
1. Add the server with the first command below.
2. Sign in with the second: your browser opens Flowplane; sign in and allow Codex.
3. In the IDE extension: MCP servers › Add server, choose Streamable HTTP, paste https://mcp.flowplane.eu/<your-label>, then Authenticate.
```
codex mcp add flowplane --url https://mcp.flowplane.eu/<your-label>
codex mcp login flowplane
```
Steps checked against the vendor’s documentation (OpenAI)
3
Ask Codex
- “How many visitors did our site have last month, compared with the month before?”
- “Which pages got the most visits this week?”
- “Where does our traffic come from in October, by source?”
- “How many people completed the Signup goal in the last 30 days, and from which countries?”
- “Create a goal for visits to /thank-you on our main site.”

What it can do

What Codex can do in Plausible

For anyone who measures their websites with Plausible Analytics, on Plausible Cloud or a self-hosted Community Edition. Through Flowplane an AI assistant can list your sites and their goals and query the Stats API: totals, a time series, or a breakdown by page, source, country, goal or device. With a Sites API key it can also add a site, rename one and create a goal; each waits for your approval by default.

Reads4

Query statsVisitors, pages, sources and goalsquery_stats
List sitesSites you can reachlist_sites
Get siteA site's detailsget_site
List goalsA site's goalslist_goals

Changesasks first3

Create goalFind or create a goalcreate_goal
Create siteAdd a sitecreate_site
Update siteRename a siteupdate_site

FAQ

Questions

Why does creating a site or a goal fail?: Those changes go through Plausible’s Sites API, which needs a Sites API key; a Stats API key is refused for them. Reading statistics, sites and goals works with a Stats API key.
What is left out?: Deleting a site, a goal, a custom property or a guest, shared links, guests and tracker settings are left out on purpose. A statistics answer has at most 100 rows a page, and Plausible allows 600 requests an hour per key.
Does Codex see the password or key for Plausible?: No. The key for Plausible is pasted into Flowplane once and kept sealed there. Codex only gets a Flowplane sign-in for you, which you can revoke in the console.
Can Codex change things in Plausible without asking?: Not by default: every change in Plausible waits for your approval in the browser. Your workspace’s rules decide, per tool.

Your assistant

Other assistants with Plausible

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