PlanetScale vs Supabase for AI agents
As of 16 Oct 2026, PlanetScale gets an AI agent further: L2 · Gets in against L1 · Needs a person.
- Find: Docs for agents: llms.txt, an OpenAPI and an MCP server.
- Access: Sign-up by email.
- Use: Work not reached.
- Pay: Card checkout.
- Leave: Leaves on its own: Nothing to cancel, deletes its account.
Got in; first wall at first action (blocked). Next: let a trial or free plan reach the core features
Gets in on its own: L2 · Gets in. Our agent signed up headless, no CAPTCHA, confirmed by email, logged in through the CLI's device flow, and pulled a service token for both the API and a hosted MCP server. It stopped trying to create a database: the API answered that it could not verify a card, and there is no free plan to work around that. Paying needs a card through Stripe Checkout; our agent never attached one, so it never reached core database work. Deleting the account needs the web UI: no API route exists for it.
Gets furtherDriven 2 Oct 2026 · The drive and its evidence- Find: Docs for agents: llms.txt, an OpenAPI and an MCP server; a docs page for each core task.
- Access: Signs up sometimes.
- Use: 100% of the work.
- Pay: Needs a person to buy: A CAPTCHA at checkout.
- Leave: Nothing to cancel: Deletes its data, but the login stays.
Got in; first wall at pay (blocked). Next: let an agent get in on its own in every drive
Supabase is a backend platform for databases, user accounts, file storage and serverless functions. Once the agent signed in with GitHub, it could do almost everything on its own through code: create a database, add users, store files, run functions, and more. It stopped at the very first step: creating an account by email showed a puzzle test it couldn't solve, so it had to use a GitHub sign-in instead, and upgrading to a paid plan hit the same kind of puzzle.
Driven 16 Oct 2026 · The drive and its evidenceThe two summaries: written by our agents from each product's drive. How we write.
Where each one stops.
PlanetScaleGot in; first wall at first action (blocked)
SupabaseGot in; first wall at pay (blocked)
| Checkpoint | PlanetScale | Supabase |
|---|---|---|
| Docs | Headless | Headless |
| Sign up | Headless | In a browser |
| Verify | Headless | Not needed |
| Key | Headless | In a browser |
| First call | Headless | Headless |
| First action | Blocked | Headless |
| Pay | Not tried | Blocked |
| Cancel | Not needed | Not needed |
| Delete | In a browser | Blocked |
Headless or in a browser.
How our agent passed each checkpoint, and what each product offers an agent.
Checkpoints by route, API, MCP, CLI and SDK
| PlanetScale | Supabase | |
|---|---|---|
| Headless (checkpoints) | 5 | 3 |
| In a browser (checkpoints) | 1 | 2 |
| Needs a human (checkpoints) | 0 | 0 |
| Blocked (checkpoints) | 1 | 2 |
| Not tested (checkpoints) | 1 | 0 |
| Work done | Paid plans only | 100% of the core |
| API | Yes | Yes |
| OpenAPI | Yes | Yes |
| MCP server | Yes (official) | Yes (official) |
| CLI | Yes | Yes |
| SDK | No | – |
| llms.txt | Yes | Yes |
Bot checks, and where a person was needed.
| PlanetScale | Supabase | |
|---|---|---|
| Bot check | hidden honeypot field (telephone) let it through at sign up | A challenge on the form stopped one way in (Email and password) |
| Wall type | No bot-check wall | A challenge on the form |
| First wall | Got in; first wall at first action (blocked) | Got in; first wall at pay (blocked) |
| A person helped | No | No |
A challenge on the form: It asks every visitor to prove they are human. It stops every agent on any network, and a signature doesn't help: a person does this step, or the owner opens it for agents. Where we drive from.
Level and part scores.
| PlanetScale | Supabase | |
|---|---|---|
| Level | L2 · Gets in | L1 · Needs a person |
| Holds up | Not measured | 82 of 100, fair |
| Agent-ready setup | 100 of 100, good | 100 of 100, good |
| Standards | None recorded | MCP spec of 28 Jul 2026 (current) · MCP discovery (current) · MCP client registration (behind) · OpenAPI 3.0.0 (2 versions behind) |
| Security | No review in this drive | Reported privately to the owner |
Docs match is measured in an Audit. What the scores mean.
Pay, cancel and delete.
| PlanetScale | Supabase | |
|---|---|---|
| Pay | Card checkout | Needs a person to buy |
| Free plan or trial | None | Free plan |
| Cancel | Not needed | Not needed |
| Delete the account | In a browser | Blocked |
How each one takes payment
- PlanetScale: Card checkout.
- Supabase: A person has to buy: a CAPTCHA at checkout.
PlanetScale vs Supabase: the short answers.
Which can an AI agent use, PlanetScale or Supabase?
PlanetScale gets an AI agent further: L2 · Gets in against L1 · Needs a person. With PlanetScale our agent got in and met its first wall at first action (blocked); with Supabase it got in and met its first wall at pay (blocked). Driven 2 Oct 2026 (PlanetScale) and 16 Oct 2026 (Supabase).
Can an AI agent sign up for PlanetScale and Supabase on its own?
PlanetScale: yes, headless. Supabase: yes, in a browser, but a later step stopped it.
Do PlanetScale and Supabase have an MCP server?
PlanetScale: yes (official). Supabase: yes (official).
Can an AI agent delete its PlanetScale or Supabase account?
PlanetScale: yes, in a browser. Supabase: blocked.
The drives and the category.
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