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Supabase vs Uploadthing

Supabase scores higher on the AgentReady, 74/100 against 40/100. They differ on 19 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.

Uploadthing. UploadThing is a file upload service for developers, positioned as an easier and safer alternative to AWS S3.

Where Supabase is ahead

Supabase passes clear product positioning, llms.txt published, llms-full.txt / full agent docs, mcp discoverable and machine-readable metadata, and Uploadthing does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: structured api reference. Uploadthing misses it.

And on adopt, cli available and mcp integration available. Uploadthing misses those.

Where Uploadthing is ahead

Uploadthing 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: pricing understandable. Supabase misses it.

And on adopt, self-service signup, free trial or free allowance, fast time to first request, copyable quickstart and official typescript sdk. Supabase misses those.

Finally, on operate, canonical workflow succeeds and structured, predictable output. Supabase misses those.

What neither does

Both fail openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, no mandatory sales call, programmatic credential creation, official python sdk, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, 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 is whether an agent can find the product at all without being told it exists. Supabase leads 100 to 53. Supabase misses search discoverable, clear canonical domain, public docs discoverable; Uploadthing misses clear product positioning, llms.txt published, llms-full.txt / full agent docs, mcp discoverable, machine-readable metadata.

Understand. Supabase leads 67 to 31. Supabase misses openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Uploadthing misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented.

Adopt. Supabase leads 63 to 40. 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; Uploadthing misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, official python sdk, cli available, mcp integration available.

Operate. Supabase leads 67 to 35. 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; Uploadthing misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified.

Pricing

Supabase does not publish a machine-readable starting price. Uploadthing starts at $0/month and has a free tier.

Signal by signal

Which to pick

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

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