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Better Auth vs Bump

Better Auth scores higher on the AgentReady, 57/100 against 52/100. 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

Better Auth. A framework-agnostic, universal authentication and authorization framework for TypeScript.

Bump. Bump.sh is a platform for API documentation and MCP (Model Context Protocol) servers that automatically generates docs and production-ready MCP servers from OpenAPI, AsyncAPI, and Arazzo specifications.

Where Better Auth is ahead

Better Auth passes llms.txt published, and Bump does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: pricing understandable and limits / constraints documented. Bump misses those.

And on adopt, self-service signup and free trial or free allowance. Bump misses those.

Where Bump is ahead

Bump passes copyable quickstart, and Better Auth does not. That is adopt, whether an agent can get a key and make its first successful call without a human in the loop.

It also holds operate: retry behavior documented and observable execution. Better Auth misses those.

What neither does

Both fail clear canonical domain, llms-full.txt / full agent docs, 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, fast time to first request, structured, predictable output, machine-readable errors, 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. Better Auth leads 87 to 80. Better Auth misses clear canonical domain, llms-full.txt / full agent docs; Bump misses clear canonical domain, llms.txt published, llms-full.txt / full agent docs.

Understand. Better Auth leads 54 to 38. Better Auth misses openapi / spec quality, request examples provided, response examples provided, errors and status codes documented; Bump misses openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented.

Adopt. Better Auth leads 62 to 45. Better Auth misses no mandatory sales call, agent-compatible signup flow, programmatic credential creation, fast time to first request, copyable quickstart; Bump misses self-service signup, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, free trial or free allowance, fast time to first request.

Operate is whether an agent can run against it in production and recover when a call fails. Bump leads 44 to 24. Better Auth misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified; Bump misses structured, predictable output, machine-readable errors, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Better Auth starts at $0/month and has a free tier. Bump does not publish one.

Signal by signal

Which to pick

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

An agent can fetch this as data: POST /v1/compare {"slugs": ["better-auth", "bump"]}