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Ahrefs vs SpyFu

Ahrefs scores higher on the AgentReady, 83/100 against 33/100. They differ on 18 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Ahrefs. Ahrefs is an AI marketing platform built on a proprietary index of the web that provides tools and data to grow brand traffic, visibility, and revenue in search, AI, and beyond.

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

Where Ahrefs is ahead

Ahrefs passes clear canonical domain, clear product positioning, public docs discoverable, mcp discoverable 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 understand: openapi / spec quality, request examples provided, response examples provided, errors and status codes documented and limits / constraints documented. SpyFu misses those.

And on adopt, agent-compatible signup flow, programmatic credential creation, official typescript sdk, official python sdk and mcp integration available. SpyFu misses those.

Finally, on operate, structured, predictable output, machine-readable errors and observable execution. SpyFu misses those.

What neither does

Both fail llms-full.txt / full agent docs, authentication documented, fast time to first request, copyable quickstart, cli available, retry behavior documented, idempotency support, rate-limit behavior predictable, 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. Ahrefs leads 93 to 40. Ahrefs misses llms-full.txt / full agent docs; SpyFu misses clear canonical domain, clear product positioning, public docs discoverable, llms-full.txt / full agent docs, mcp discoverable, package / cli discoverable.

Understand. Ahrefs leads 92 to 38. Ahrefs misses authentication documented; SpyFu misses openapi / spec quality, authentication documented, 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. Ahrefs leads 85 to 30. Ahrefs misses fast time to first request, copyable quickstart, cli 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. Ahrefs leads 61 to 24. Ahrefs misses retry behavior documented, idempotency support, rate-limit behavior predictable, 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

Ahrefs 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

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

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