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2captcha vs Capsolver

2captcha scores higher on the AgentReady, 58/100 against 56/100. They differ on 8 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

2captcha. Captcha solving service that provides API-based captcha solving for developers and captcha entry work for workers.

Capsolver. AI-powered CAPTCHA solving service for automation and data workflows.

Where 2captcha is ahead

2captcha passes mcp discoverable, and Capsolver does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: authentication documented. Capsolver misses it.

And on adopt, fast time to first request, copyable quickstart and mcp integration available. Capsolver misses those.

Where Capsolver is ahead

Capsolver passes public docs discoverable, and 2captcha 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. 2captcha misses it.

And on adopt, agent-compatible signup flow. 2captcha misses it.

What neither does

Both fail openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, no mandatory sales call, programmatic credential creation, cli available, 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. Both sit at 87/100 here. 2captcha misses public docs discoverable; Capsolver misses mcp discoverable.

Understand. Capsolver leads 38 to 31. 2captcha misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Capsolver 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. 2captcha leads 65 to 50. 2captcha misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, cli available; Capsolver misses no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, cli available, mcp integration available.

Operate. Both sit at 47/100 here. 2captcha misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; Capsolver misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

2captcha starts at $0.5 per 1000 with no free tier. Capsolver starts at $0.4/1k images with no free tier.

Signal by signal

Which to pick

2captcha clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: 2captcha and Capsolver. Alternatives to each: 2captcha, Capsolver.

An agent can fetch this as data: POST /v1/compare {"slugs": ["2captcha", "capsolver"]}