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PlanetScale vs TiDB Cloud

TiDB Cloud scores higher on the AgentReady, 65/100 against 64/100. They differ on 5 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

PlanetScale. PlanetScale provides the world's fastest and most scalable cloud databases, offering fully-managed Vitess and PostgreSQL clusters with exceptional speed, reliability, and horizontal scalability through sharding.

TiDB Cloud. TiDB Cloud is a cloud-native distributed SQL database service that provides infrastructure for infinite agents and infinite data, with support for AI applications, vector search, and multi-modal data platforms.

Where PlanetScale is ahead

PlanetScale passes clear canonical domain, and TiDB Cloud 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. TiDB Cloud misses it.

And on adopt, copyable quickstart. TiDB Cloud misses it.

Where TiDB Cloud is ahead

TiDB Cloud passes self-service signup, and PlanetScale does not. That is adopt, whether an agent can get a key and make its first successful call without a human in the loop.

It also holds operate: structured, predictable output. PlanetScale misses it.

What neither does

Both fail openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, programmatic credential creation, free trial or free allowance, fast time to first request, official python sdk, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable. 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. PlanetScale leads 100 to 93. PlanetScale misses nothing; TiDB Cloud misses clear canonical domain.

Understand. PlanetScale leads 46 to 38. PlanetScale misses openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; TiDB Cloud misses openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes 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. TiDB Cloud leads 65 to 55. PlanetScale misses self-service signup, programmatic credential creation, free trial or free allowance, fast time to first request, official python sdk; TiDB Cloud misses programmatic credential creation, free trial or free allowance, fast time to first request, copyable quickstart, official python sdk.

Operate. TiDB Cloud leads 65 to 56. PlanetScale misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable; TiDB Cloud misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable.

Pricing

PlanetScale starts at $5/mo. TiDB Cloud does not publish one.

Signal by signal

Which to pick

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

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