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Screaming Frog vs SpyFu

Screaming Frog scores higher on the AgentReady, 37/100 against 33/100. They differ on 11 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Screaming Frog. UK based SEO agency and creators of website crawler and log file analyser tools

SpyFu. Competitor keyword research tools for Google Ads PPC & SEO that transform metrics and competitor research into AI-powered actions

Where Screaming Frog is ahead

Screaming Frog passes clear canonical domain, clear product positioning and package / cli discoverable, and SpyFu does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds adopt: agent-compatible signup flow, copyable quickstart, official typescript sdk and official python sdk. SpyFu misses those.

Where SpyFu is ahead

SpyFu passes llms.txt published, and Screaming Frog 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. Screaming Frog misses it.

And on adopt, self-service signup and no mandatory sales call. Screaming Frog misses those.

What neither does

Both fail public docs discoverable, llms-full.txt / full agent docs, mcp discoverable, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, programmatic credential creation, fast time to first request, cli available, mcp integration available, 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 is whether an agent can find the product at all without being told it exists. Screaming Frog leads 60 to 40. Screaming Frog misses public docs discoverable, llms.txt published, llms-full.txt / full agent docs, mcp discoverable; SpyFu misses clear canonical domain, clear product positioning, public docs discoverable, llms-full.txt / full agent docs, mcp discoverable, package / cli discoverable.

Understand. SpyFu leads 38 to 23. Screaming Frog misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; SpyFu misses openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented.

Adopt. Screaming Frog leads 40 to 30. Screaming Frog misses self-service signup, no mandatory sales call, programmatic credential creation, fast time to first request, cli available, mcp integration available; SpyFu misses agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart, official typescript sdk, official python sdk, cli available, mcp integration available.

Operate. Both sit at 24/100 here. Screaming Frog misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified; SpyFu misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified.

Pricing

Screaming Frog does not publish a machine-readable starting price and has a free tier. SpyFu starts at $29/mo with no free tier.

Signal by signal

Which to pick

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

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