API · /chmod-api

chmod API

healthy 3,654 Subscribers

A Unix file-permission calculator as an API. Convert a symbolic permission string (rwxr-xr-x) to its octal mode (755) and back, and explain any mode in plain English with a per-class breakdown (owner / group / others, each read / write / execute). Full support for the special bits — setuid (4), setgid (2) and the sticky bit (1) — so 4755 ↔ rwsr-xr-x and 1777 ↔ rwxrwxrwt are handled correctly, including the capital S/T forms. Perfect for Dockerfiles and CI scripts, deployment and provisioning tooling, teaching, and any time you need to double-check a chmod value. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from anything that touches real files or networking.

#chmod #unix #permissions #linux #sysadmin #developer-tools

api.oanor.com/chmod-api

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Machine-readable spec so AI agents can integrate this API.

/api/chmod-api/openapi.json

/api/chmod-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 87 ms; Server probes · 24h
Subscribers: 3,654; active
Total calls: 56; last 7 days

Full status page → · 24 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

720 calls / month
2 requests / second
Hard cap (429 above quota, no overage)
720 calls/month
2 req/sec
Symbolic + octal + describe
No credit card

Starter

€0.90 /month

5,700 calls / month
8 requests / second
Hard cap (429 above quota, no overage)
5.7k calls/month
8 req/sec
setuid/setgid/sticky
Email support

Pro

€18.60 /month

123,000 calls / month
20 requests / second
Hard cap (429 above quota, no overage)
123k calls/month
20 req/sec
CI / provisioning pipelines
Priority support

Mega

€54.60 /month

635,000 calls / month
50 requests / second
Hard cap (429 above quota, no overage)
635k calls/month
50 req/sec
Platform scale
Dedicated SLA

Built by

PremiumApi

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api.oanor.com/raid-api

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api.oanor.com/auger-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for chmod API?

Sign up for free at oanor.com, generate an API key from the developer dashboard, and call chmod API with the x-oanor-key header. No credit card needed for the free tier.

What's the rate limit for chmod API?

Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.

How much does chmod API cost?

chmod API has a free tier with 100 calls / month. Paid plans start at €0.90 / month with higher quotas and faster rate limits.

Can I cancel my subscription anytime?

Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.

Is chmod API GDPR-compliant?

All requests to chmod API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

chmod 3

Meta 1

Pick an endpoint from the list on the left to see its details and try it.

GET /v1/describe

Describe a mode

Playground

Parameters

Custom headers

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GET /v1/to-octal

Symbolic to octal

Playground

Parameters

Custom headers

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GET /v1/to-symbolic

Octal to symbolic

Playground

Parameters

Custom headers

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GET /v1/meta

Spec

Playground

Custom headers

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Code snippets

curl https://api.oanor.com/chmod-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."

const res = await fetch("https://api.oanor.com/chmod-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();

$ch = curl_init("https://api.oanor.com/chmod-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);

import requests
r = requests.get(
    "https://api.oanor.com/chmod-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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chmod API

API health

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AUR API

Flathub API

RAID Calculator API

Screw Auger API

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