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Last9 vs Sentry

Sentry scores higher on the AgentReady, 62/100 against 48/100. They differ on 7 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Last9. Last9 is an observability platform for logs, metrics, and traces.

Sentry. Application monitoring software for error monitoring, tracing, and debugging.

Where Last9 is ahead

Last9 passes copyable quickstart, and Sentry does not. That is adopt, whether an agent can get a key and make its first successful call without a human in the loop.

Where Sentry is ahead

Sentry passes search discoverable, and Last9 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, authentication documented and limits / constraints documented. Last9 misses those.

And on adopt, cli available. Last9 misses it.

Finally, on operate, observable execution. Last9 misses it.

What neither does

Both fail openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes documented, self-service signup, no mandatory sales call, programmatic credential creation, free trial or free allowance, fast time to first request, 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. Sentry leads 100 to 87. Last9 misses search discoverable; Sentry misses nothing.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. Sentry leads 46 to 15. Last9 misses structured api reference, openapi / spec quality, authentication documented, pricing understandable, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Sentry misses openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes documented.

Adopt. Both sit at 50/100 here. Last9 misses self-service signup, no mandatory sales call, programmatic credential creation, free trial or free allowance, fast time to first request, cli available; Sentry misses self-service signup, no mandatory sales call, programmatic credential creation, free trial or free allowance, fast time to first request, copyable quickstart.

Operate. Sentry leads 53 to 41. Last9 misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution; Sentry misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable.

Pricing

Last9 does not publish a machine-readable starting price. Sentry does not publish one.

Signal by signal

Which to pick

Sentry clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: Last9 and Sentry. Alternatives to each: Last9, Sentry.

An agent can fetch this as data: POST /v1/compare {"slugs": ["last9", "sentry"]}