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Extract vs Spider

Spider scores higher on the AgentReady, 72/100 against 71/100. 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

Extract. Vend API Merchant — Six pay-per-call APIs for AI agents settled in Nano (XNO), no signup, no API key.

Spider. Spider is a web data platform that provides an API to render, search, and extract live web content into clean formats.

Where Extract is ahead

Extract passes clear product positioning, and Spider does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: response examples provided and errors and status codes documented. Spider misses those.

And on adopt, no mandatory sales call and programmatic credential creation. Spider misses those.

Finally, on operate, machine-readable errors. Spider misses it.

Where Spider is ahead

Spider passes llms-full.txt / full agent docs, and Extract 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. Extract misses it.

And on adopt, agent-compatible signup flow, fast time to first request and copyable quickstart. Extract misses those.

Finally, on operate, idempotency support, observable execution and agent compatibility verified. Extract misses those.

What neither does

Both fail public docs discoverable, openapi / spec quality, request examples provided, 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. Extract leads 80 to 73. Extract misses public docs discoverable, llms-full.txt / full agent docs; Spider misses clear product positioning, public docs discoverable.

Understand. Extract leads 69 to 54. Extract misses openapi / spec quality, request examples provided, limits / constraints documented; Spider misses openapi / spec quality, request examples provided, response examples provided, errors and status codes documented.

Adopt. Spider leads 81 to 80. Extract misses agent-compatible signup flow, fast time to first request, copyable quickstart; Spider misses no mandatory sales call, programmatic credential creation.

Operate is whether an agent can run against it in production and recover when a call fails. Spider leads 78 to 53. Extract misses idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified; Spider misses machine-readable errors, rate-limit behavior predictable.

Pricing

Extract starts at 0.0001 XNO and has a free tier. Spider starts at $1/GB and has a free tier.

Signal by signal

Which to pick

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

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