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SerpApi vs Valyu

Valyu scores higher on the AgentReady, 62/100 against 44/100. 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

SerpApi. SerpApi is a service that provides APIs to scrape search engine results pages (SERPs) from multiple search engines and platforms, offering structured data for various use cases including SEO, AI/LLM insights, ecommerce, and more.

Valyu. Search and deep research API for AIs doing knowledge work.

Where SerpApi is ahead

SerpApi passes observable execution, and Valyu does not. That is operate, whether an agent can run against it in production and recover when a call fails.

Where Valyu is ahead

Valyu passes public docs discoverable, llms-full.txt / full agent docs and machine-readable metadata, and SerpApi does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: limits / constraints documented. SerpApi misses it.

And on adopt, self-service signup, no mandatory sales call, fast time to first request and copyable quickstart. SerpApi misses those.

Finally, on operate, structured, predictable output. SerpApi misses it.

What neither does

Both fail structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, agent-compatible signup flow, programmatic credential creation, machine-readable errors, 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. Valyu leads 100 to 73. SerpApi misses public docs discoverable, llms-full.txt / full agent docs, machine-readable metadata; Valyu misses nothing.

Understand. Valyu leads 31 to 23. SerpApi misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Valyu misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented.

Adopt is whether an agent can get a key and make its first successful call without a human in the loop. Valyu leads 80 to 45. SerpApi misses self-service signup, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart; Valyu misses agent-compatible signup flow, programmatic credential creation.

Operate. Both sit at 35/100 here. SerpApi misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; Valyu misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified.

Pricing

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

Signal by signal

Which to pick

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

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