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API playgroundCustom domainsGuides & changelogs
api.apidex.dev
Example Payments API
v1.3.0
Live testing
DELETE/customers/{customer_id}Soft delete
cURL request
curl -X DELETE \
"https://api.example.com/customers/{customer_id}"
Request URL
https://api.example.com/customers/{customer_id}
Path parameters
customer_idrequired

What you get

Live request playground

Make real API calls straight from the docs. Includes cURL generation and auth headers.

Custom domains + free SSL

Serve docs from your own subdomain. SSL is automatic — nothing to set up.

Guides and changelogs

Write guides and changelogs next to your API reference. One place for everything.

One plan. Everything included.

35 EUR / month. 14-day trial included. Cancel anytime.

Pro

Includes a 14-day trial

35 EUR
per month · ~42 USD
Create documentation from OpenAPI
Public docs site
Live requests (cURL + Try)
Basic auth header support
Multiple projects for your org
Guides and walkthroughs
Versioning for your API
Automate doc uploads (npm package + API key)
Custom domains with free SSL
History of requests & responses
Priority support
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Enterprise

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Your API, discoverable by AI.

Apidex generates llms.txt at your docs URL. Cursor, Claude, and Zed can find your full API — specs, guides, changelog — without scraping HTML.

llms.txt

Auto-generated at yourdomain.com/llms.txt. Links to every spec, guide, and changelog entry.

Raw OpenAPI download

One click on any public spec page. No login. $ref's intact for Postman, SDK generators, and LLMs.

More coming

MCP server, llms-full.txt, and agent-ready endpoint metadata.

# Payments API
 
## APIs
 
- [Payments API (v1.3.0)](https://api.example.com/...): OpenAPI specification
curl yourdomain.com/llms.txtTry it on your project →

Common questions.

Do I need a credit card to start?

No. Sign up and your 14-day trial starts. No card required.

What happens to my docs after the trial?

Your docs stay up. You can't publish changes until you subscribe, but nothing is deleted.

Can I cancel anytime?

Yes. Cancel any time. You keep access until the end of your billing period.

How do I upload my API spec?

Drop a YAML or JSON file in the dashboard. Or use the npm package or REST API to automate uploads.

What is the difference between the trial and a Pro subscription?

None. The trial is full Pro for 14 days. After that, 35 EUR/month keeps everything running.

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