Compare

Mcp vs Unkey

Mcp scores higher on the AgentReady, 58/100 against 56/100. 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

Mcp. MCP.so is a discovery platform for MCP (Model Context Protocol) servers, connecting AI apps to tools, data, and automated workflows.

Unkey. Unkey is a developer platform for modern APIs that unifies infrastructure, allowing developers to deploy APIs instantly, route traffic through global gateways, and understand usage in one place.

Where Mcp is ahead

Mcp passes llms-full.txt / full agent docs and mcp discoverable, and Unkey does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds adopt: mcp integration available. Unkey misses it.

And on operate, retry behavior documented and agent compatibility verified. Unkey misses those.

Where Unkey is ahead

Unkey passes public docs discoverable, and Mcp 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, authentication documented and limits / constraints documented. Mcp misses those.

And on adopt, fast time to first request and copyable quickstart. Mcp misses those.

What neither does

Both fail openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, structured, predictable output, machine-readable errors, idempotency support, 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. Mcp leads 87 to 80. Mcp misses public docs discoverable; Unkey misses llms-full.txt / full agent docs, mcp discoverable.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. Unkey leads 54 to 23. Mcp misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Unkey misses openapi / spec quality, request examples provided, response examples provided, errors and status codes documented.

Adopt. Mcp leads 60 to 55. Mcp misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart; Unkey misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, mcp integration available.

Operate. Mcp leads 61 to 35. Mcp misses structured, predictable output, machine-readable errors, idempotency support, rate-limit behavior predictable; Unkey misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Mcp starts at $399/mo with no free tier. Unkey starts at $5/mo and has a free tier.

Signal by signal

Which to pick

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

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