API

Authentication

Every endpoint needs a key — send it in the x-api-key header. Create a free account to get one. The sandbox on each page works without a key, but only from this site.

curl -X POST https://sinikoding.dev/api/v1/base64 \
  -H 'content-type: application/json' \
  -H 'x-api-key: tk_live_…' \
  -d '{"input":"halo","mode":"encode"}'

Response shape

Every response is either ok:true with data, or ok:false with an error code and message. Error messages are always English; codes are stable and safe to branch on.

{
  "ok": true,
  "data": {
    "tool": "base64",
    "version": 1,
    "output": { "kind": "text", "value": "…" },
    "meta": { }
  }
}

{
  "ok": false,
  "error": {
    "code": "invalid_input",
    "message": "…"
  }
}

Rate limits & quota

Both are checked on every request. Remaining amounts come back as headers.

x-ratelimit-remaining: 59
x-quota-remaining: 4999

Error codes

Endpoints