CAIN-42 CAIN Studio

API reference · Trust Fabric

Register a principal

POST /fabric/identity/principals

Last reviewed 2026-10-02

POST /fabric/identity/principals

Request body

PrincipalCreate (required)

FieldTypeMeaning
kind requiredstringagent | human | service
display_name requiredstringmin length 1 · max length 200
public_keystring or nullbase64 Ed25519 public key (32 bytes)
metadataobject

Responses

StatusMeaningBody
201Successful ResponseJSON
422Validation ErrorHTTPValidationError
401No key, or a key that is not validJSON detail
429Rate limit for your plan reached; retry after the Retry-After secondsJSON detail

Try it

This call changes data in the account the key belongs to.

The request goes from your browser straight to this site. Your key is not stored unless you tick the box, and then only in this tab's session storage.

Code

curl -sS -X POST 'https://cainstudio.online/fabric/identity/principals' \
  -H "X-API-Key: $CAIN_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"kind": "kind", "display_name": "display-name"}'

Schemas used

HTTPValidationError · PrincipalCreate · ValidationError

← List this tenant's principals · all 79 Trust Fabric calls · Fetch one principal →

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