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Xata vs Zilliz

Xata scores higher on the AgentReady, 70/100 against 49/100. They differ on 10 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Xata. A Postgres platform with instant branching and scale-to-zero compute.

Zilliz. Zilliz offers a fully managed Vector Lakebase powered by Milvus, unifying real-time vector search, lake-scale discovery, and AI data operations.

Where Xata is ahead

Xata passes llms-full.txt / full agent docs and mcp discoverable, and Zilliz 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. Zilliz misses it.

And on adopt, no mandatory sales call, agent-compatible signup flow, fast time to first request, copyable quickstart and mcp integration available. Zilliz misses those.

Finally, on operate, agent compatibility verified. Zilliz misses it.

Where Zilliz is ahead

Zilliz passes authentication documented, and Xata does not. That is understand, whether an agent can read the docs and work out how the API behaves before calling 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, structured, predictable output, 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. Xata leads 100 to 80. Xata misses nothing; Zilliz misses llms-full.txt / full agent docs, mcp discoverable.

Understand. Xata leads 38 to 31. Xata misses openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Zilliz misses structured api reference, openapi / spec quality, 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. Xata leads 90 to 45. Xata misses programmatic credential creation; Zilliz misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart, mcp integration available.

Operate. Xata leads 53 to 39. Xata misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable; Zilliz misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Xata starts at $0.012/hr and has a free tier. Zilliz does not publish one and has a free tier.

Signal by signal

Which to pick

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

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