FastCron alternatives
The highest-scoring alternative to FastCron is Inngest at 61/100 on the AgentReady, against 52/100 for FastCron.
All scored in Cron & Scheduling Infrastructure.
What Inngest does that FastCron does not
Inngest passes clear canonical domain, llms.txt published, llms-full.txt / full agent docs, mcp discoverable, limits / constraints documented, official typescript sdk, cli available, mcp integration available, idempotency support, and FastCron 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
FastCron fails clear canonical domain, llms.txt published, llms-full.txt / full agent docs, mcp discoverable, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, programmatic credential creation, official typescript sdk, cli available, mcp integration available, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified. Each one is a place an unattended run stops, which is usually what sends someone looking in the first place.
Where FastCron loses the points
| Pillar | FastCron | What it measures |
|---|---|---|
| Discover | 67 | Can an agent find it at all: sitemap, robots, structured data. |
| Understand | 46 | Is there a spec, an llms.txt, a machine-readable description. |
| Adopt | 60 | Signup, keys, SDKs, and whether a human has to be involved. |
| Operate | 35 | Rate-limit headers, errors, status, and behaviour under load. |
FastCron is weakest on operate at 35/100. Missing rate-limit headers mean an agent finds the limit by hitting it. If that is the part your agent depends on, take the ranking above seriously; if it is not, FastCron may still be the right pick.
What an agent runs into with FastCron
These are the findings from the last audit on 2026-08-25. Each one is a place unattended software stops, which is the practical reason to look at the list above.
- Ship an MCP server so agents can call you as a tool.
- Publish MCP install instructions so agents can discover the server.
- Flesh out the OpenAPI: paths, schemas, and descriptions.
- Document error responses as an enum in your OpenAPI.
- Let agents create API keys programmatically.
- Ship an official TypeScript/JavaScript SDK on npm.
- Return X-RateLimit / Retry-After headers so agents pace themselves.
- Add /llms.txt so agents can find and read your capabilities.
What this category actually supports
Across the 7 products scored in Cron & Scheduling Infrastructure, schedule a recurring task is offered by 71%.
An agent can get this list directly: resolve("alternative to FastCron") over the MCP server, or GET /v1/categories/cron.