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Selectpdf vs Supabase

Supabase scores higher on the AgentReady, 74/100 against 47/100. They differ on 16 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Selectpdf. SelectPdf is a battle-tested HTML to PDF toolkit providing a .NET Library for self-hosted embedding and a REST API for any language.

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.

Where Selectpdf is ahead

Selectpdf 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, official typescript sdk and official python sdk. Supabase misses those.

Finally, on operate, canonical workflow succeeds. Supabase misses it.

Where Supabase is ahead

Supabase passes llms-full.txt / full agent docs and mcp discoverable, and Selectpdf 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. Selectpdf misses it.

And on adopt, cli available and mcp integration available. Selectpdf 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, structured, predictable output, 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. Supabase leads 100 to 80. Selectpdf misses llms-full.txt / full agent docs, mcp discoverable; Supabase misses search discoverable, clear canonical domain, public docs discoverable.

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

Adopt. Supabase leads 63 to 52. Selectpdf misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, cli available, mcp integration available; 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.

Operate is whether an agent can run against it in production and recover when a call fails. Supabase leads 67 to 24. Selectpdf misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified; 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.

Pricing

Selectpdf starts at $19/mo and has a free tier. Supabase does not publish one.

Signal by signal

Which to pick

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

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