Authentication - PMX API

API Key

Include your API key in the X-API-Key header with every request:

curl https://api.pmx.trade/v2/markets \
  -H "X-API-Key: pmx_live_abc123..."

pmx_live_{32_character_string}

Your API key is bound to the wallet that created it. All trading operations execute on behalf of that wallet.

Never hardcode keys in source code

Never expose keys in client-side code

Generate new keys periodically

Delete compromised keys instantly

PMX_API_KEY=pmx_live_abc123...

Every response includes rate limit information:

X-RateLimit-Limit: 100
X-RateLimit-Remaining: 97
X-RateLimit-Reset: 1707580800

Status	Code	Description
401	`UNAUTHORIZED`	Missing or invalid API key
429	`RATE_LIMIT_EXCEEDED`	Too many requests