Speakeasy alternatives
The highest-scoring alternative to Speakeasy is Permit.io at 79/100 on the AgentReady, against 64/100 for Speakeasy.
All scored in Authentication & Identity.
What Permit.io does that Speakeasy does not
Permit.io passes search discoverable, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, programmatic credential creation, cli available, machine-readable errors, and Speakeasy fails them. That is the whole of the gap between the two scores, so if none of those matter to your agent the ranking above overstates the difference.
Why people look for an alternative
Speakeasy fails search discoverable, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, self-service signup, no mandatory sales call, programmatic credential creation, fast time to first request, cli available, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable. Each one is a place an unattended run stops, which is usually what sends someone looking in the first place.
What this category actually supports
Across the 25 products scored in Authentication & Identity, authenticate users is offered by 68%, social / oauth login is offered by 52%, enterprise sso is offered by 52%, manage orgs & roles is offered by 40%. Anything under half is a gap you should expect to fill yourself whichever one you pick.
An agent can get this list directly: resolve("alternative to Speakeasy") over the MCP server, or GET /v1/categories/auth.