Exchange a signed external principal for a platform session credential

POST/v1/internal/principal-sessions

Internal platform-BFF endpoint. The caller presents a short-lived, audience-bound principal assertion. The resulting API credential is time-bounded and must never be exposed to browser JavaScript.

How to call this endpoint

Every ACP API request uses bearer authentication. The examples here show the actual request path, auth header, and body shape that the platform expects.

Path, query, and header parameters

These parameters control which ACP object the endpoint acts on and how the request is processed.

Path parameters
None.
Query parameters
None.

Body schema

Content type: application/json · Optional

FieldTypeRequiredDescription
ttlSecondsintegerNo

What the API returns

Each response code below includes the documented payload shape for the ACP API.

201Principal and workload credential resolvedapplication/json
FieldTypeRequiredDescription
profileobjectYes
profile.userIdstringYesUser ID.
profile.emailstringNo
profile.displayNamestringNo
profile.photoURLstringNo
profile.emailVerifiedbooleanNo
profile.identityLinkIdstringNo
profile.identityProvideroidc | firebaseYes
profile.identityIssuerstringYes
subscriptionobjectYes
subscription.tierstringNo
subscription.statusstringNoCurrent lifecycle status.
credentialobjectYes
credential.idstringYesUnique identifier.
credential.keystringYes
credential.expiresAtstringYes
401Principal assertion required
None.
403Principal assertion invalid or expired
None.
Exchange a signed external principal for a platform session credential
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Response 201
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See the ACP quickstart and SDK flow