Apollo alternatives
The highest-scoring alternative to Apollo is Attio at 88/100 on the AgentReady, against 64/100 for Apollo.
All scored in CRM & Sales Infrastructure.
| Score | Alternative | Compare |
|---|---|---|
| 88 | Attio | Apollo vs Attio |
| 80 | Autorev | Apollo vs Autorev |
| 74 | Apideck | Apollo vs Apideck |
| 74 | Close | Apollo vs Close |
| 74 | HubSpot | Apollo vs HubSpot |
| 62 | Twenty | Apollo vs Twenty |
| 55 | Pipedrive | Apollo vs Pipedrive |
| 52 | Folk | - |
| 50 | Crisp | - |
| 44 | SerpApi | - |
| 43 | Salesforce | - |
What Attio does that Apollo does not
Attio passes llms-full.txt / full agent docs, structured api reference, and Apollo 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
Apollo fails llms-full.txt / full agent docs, structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart, structured, predictable output, 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.
Where Apollo loses the points
| Pillar | Apollo | What it measures |
|---|---|---|
| Discover | 93 | 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 | 70 | Signup, keys, SDKs, and whether a human has to be involved. |
| Operate | 56 | Rate-limit headers, errors, status, and behaviour under load. |
Apollo is weakest on understand at 38/100. Without a spec an agent has to guess at endpoints, and it guesses wrong. If that is the part your agent depends on, take the ranking above seriously; if it is not, Apollo may still be the right pick.
What an agent runs into with Apollo
These are the findings from the last audit on 2026-08-22. Each one is a place unattended software stops, which is the practical reason to look at the list above.
- Publish an OpenAPI spec so agents can generate a client.
- 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.
- Publish an AGENTS.md or llms-full.txt with full agent context.
- Add request examples to your API reference.
- Add response examples to your API reference.
What this category actually supports
Across the 12 products scored in CRM & Sales Infrastructure, manage contacts is offered by 92%, track deals is offered by 50%.
An agent can get this list directly: resolve("alternative to Apollo") over the MCP server, or GET /v1/categories/crm.