Orb alternatives
The highest-scoring alternative to Orb is Paddle at 83/100 on the AgentReady, against 49/100 for Orb.
All scored in Payments & Billing.
| Score | Alternative | Compare |
|---|---|---|
| 83 | Paddle | - |
| 81 | Mercury | - |
| 73 | Metronome | - |
| 73 | Polar | - |
| 65 | Stripe | - |
| 64 | Ramp | - |
| 64 | Schematichq | - |
| 61 | GoCardless | - |
| 58 | Chargebee | - |
| 55 | Adyen | - |
| 55 | Mollie | - |
| 53 | Useautumn | - |
| 50 | RevenueCat | - |
| 46 | Pylon | - |
| 45 | Checkout.com | - |
| 45 | Lemon Squeezy | - |
| 39 | Lago | - |
What Paddle does that Orb does not
Paddle passes llms.txt published, pricing understandable, self-service signup, free trial or free allowance, cli available, and Orb 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
Orb fails public docs discoverable, llms.txt published, openapi / spec quality, pricing understandable, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, self-service signup, no mandatory sales call, agent-compatible signup flow, programmatic credential creation, free trial or free allowance, fast time to first request, copyable quickstart, cli available, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution. Each one is a place an unattended run stops, which is usually what sends someone looking in the first place.
Where Orb loses the points
| Pillar | Orb | What it measures |
|---|---|---|
| Discover | 80 | Can an agent find it at all: sitemap, robots, structured data. |
| Understand | 38 | Is there a spec, an llms.txt, a machine-readable description. |
| Adopt | 35 | Signup, keys, SDKs, and whether a human has to be involved. |
| Operate | 41 | Rate-limit headers, errors, status, and behaviour under load. |
Orb is weakest on adopt at 35/100. A sales call in the signup path stops an unattended run dead. If that is the part your agent depends on, take the ranking above seriously; if it is not, Orb may still be the right pick.
What an agent runs into with Orb
These are the findings from the last audit on 2026-08-23. Each one is a place unattended software stops, which is the practical reason to look at the list above.
- Make signup self-serve; an agent cannot sit through a sales call.
- Make docs reachable without auth or navigation gymnastics.
- Flesh out the OpenAPI: paths, schemas, and descriptions.
- Document error responses as an enum in your OpenAPI.
- Let agents create API keys programmatically.
- Return X-RateLimit / Retry-After headers so agents pace themselves.
- Return request IDs and expose status/usage so runs are observable.
- Add /llms.txt so agents can find and read your capabilities.
What this category actually supports
Across the 18 products scored in Payments & Billing, accept a payment is offered by 39%, create a subscription is offered by 39%, meter usage is offered by 28%, merchant of record is offered by 17%. 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 Orb") over the MCP server, or GET /v1/categories/payments.