Best free serverless functions with no credit card (2026)

Every platform below has a renewable free tier you can start using without entering a credit card. They are ranked by our free-value score, which weighs invocation and compute allowances against the limits attached. We only list platforms whose no-card free access is confirmed in our data.

How these scores work

No credit card required

Ranked by free-value score. Every tier here renews rather than expiring.

#	Service	Main constraint	Score
1	Cloudflare WorkersBest default for webhook receivers, setup APIs, and static frontend companion backend.	100k requests/day	5.8/10
2	Deno DeployDeno Deploy runs JavaScript/TypeScript at the edge with a built-in KV store and a free tier for personal projects.	1M requests/month	7.2/10
3	Vercel FunctionsFrontend-friendly functions and deploy previews.	1M invocations/month	7.1/10
4	Upstash | WorkflowDurable serverless workflow steps with retries, sleeps, callbacks, HTTP calls, and QStash-backed scheduling.	1,000 steps/day	6.2/10
5	Val TownVal Town lets you write, run and schedule small TypeScript/JavaScript functions in the cloud with HTTP endpoints, crons and an MCP integration.	100,000 runs/day	6.0/10
6	Vercel SandboxIsolated, ephemeral Linux microVMs for safely running untrusted or AI-generated code.	5,000 creations/mo	4.4/10
7	Netlify FunctionsStatic hosting plus functions for simple APIs.	300 credits/month (hard cap)	3.8/10
8	GitHub ActionsFree-ish scheduled or manual jobs for technical users.	2,000 free minutes/month (Free plan)	3.2/10

One-time credits & programs

Kept separate from the ranking above: these are trial credits or eligibility-gated programs that eventually run out or require qualification, not renewable free tiers.

#	Service	Main constraint	Score
1	ModalServerless compute platform for running Python functions, containers, and GPU workloads with a recurring $30/month free compute credit on the Starter plan.	$30/month compute credit	5.8/10