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Ably vs StackResolve

StackResolve scores higher on the AgentReady, 100/100 against 60/100. They differ on 14 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Ably. Ably provides a realtime infrastructure platform that enables developers to build live, interactive experiences.

StackResolve. StackResolve is an independent registry that scores how ready software is for AI agents, and an API that compresses web research into structured calls.

Where StackResolve is ahead

StackResolve passes llms-full.txt / full agent docs and mcp discoverable, and Ably 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, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented and limits / constraints documented. Ably misses those.

And on adopt, programmatic credential creation and mcp integration available. Ably misses those.

Finally, on operate, machine-readable errors, retry behavior documented, rate-limit behavior predictable and agent compatibility verified. Ably misses those.

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. StackResolve leads 100 to 80. Ably misses llms-full.txt / full agent docs, mcp discoverable; StackResolve misses nothing.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. StackResolve leads 100 to 31. Ably misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; StackResolve misses nothing.

Adopt. StackResolve leads 100 to 75. Ably misses programmatic credential creation, mcp integration available; StackResolve misses nothing.

Operate. StackResolve leads 100 to 53. Ably misses machine-readable errors, retry behavior documented, rate-limit behavior predictable, agent compatibility verified; StackResolve misses nothing.

Pricing

Ably does not publish a machine-readable starting price and has a free tier. StackResolve starts at $0/mo and has a free tier.

Signal by signal

Which to pick

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

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