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Supabase vs Turso

Turso scores higher on the AgentReady, 86/100 against 74/100. They differ on 21 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Supabase. Supabase is an open-source Firebase alternative that provides a complete backend platform built on top of Postgres, offering database, authentication, storage, realtime, edge functions, and vector capabilities.

Turso. The Database for the Age of AI Agents.

Where Supabase is ahead

Supabase passes authentication documented, and Turso does not. That is understand, whether an agent can read the docs and work out how the API behaves before calling it.

Where Turso is ahead

Turso passes search discoverable, clear canonical domain and public docs discoverable, and Supabase does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: openapi / spec quality, pricing understandable, request examples provided, response examples provided and errors and status codes documented. Supabase misses those.

And on adopt, self-service signup, no mandatory sales call, programmatic credential creation, free trial or free allowance, fast time to first request, copyable quickstart, official typescript sdk and official python sdk. Supabase misses those.

Finally, on operate, canonical workflow succeeds, structured, predictable output, machine-readable errors and observable execution. Supabase misses those.

What neither does

Both fail limits / constraints documented, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified. If your agent needs any of those, you will be building it yourself either way.

Score, pillar by pillar

The AgentReady splits into four pillars, scored separately, because a product can be easy to find and still impossible to adopt.

Discover. Both sit at 100/100 here. Supabase misses search discoverable, clear canonical domain, public docs discoverable; Turso misses nothing.

Understand. Turso leads 85 to 67. Supabase misses openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Turso misses authentication documented, limits / constraints documented.

Adopt is whether an agent can get a key and make its first successful call without a human in the loop. Turso leads 100 to 63. Supabase misses self-service signup, no mandatory sales call, programmatic credential creation, free trial or free allowance, fast time to first request, copyable quickstart, official typescript sdk, official python sdk; Turso misses nothing.

Operate. Supabase leads 67 to 59. Supabase misses canonical workflow succeeds, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified; Turso misses retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Supabase does not publish a machine-readable starting price. Turso starts at $4.99/mo and has a free tier.

Signal by signal

Which to pick

Turso clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: Supabase and Turso. Alternatives to each: Supabase, Turso.

An agent can fetch this as data: POST /v1/compare {"slugs": ["supabase", "turso"]}