Read the session's scratch composition
Pure read: returns the composition currently held in the session's SCRATCH (what the author LLM has been editing over this session), NOT the project's active composition. The Director ensemble reads this back per candidate and returns it as the authored composition — the winner is saved downstream, so a candidate never commits its scratch to active. 404 when the session is unknown/foreign or has never written a scratch.
API key auth. Prefix cf_live_ for production orgs, cf_test_ for sandbox.
In: header
Path Parameters
Response Body
application/json
application/json
application/json
application/json
application/json
application/json
curl -X GET "https://example.com/v1/projects/string/compose-session/string/composition"{ "composition": null}{ "error": { "code": "string", "message": "string", "details": { "property1": null, "property2": null } }}{ "x402Version": 2, "accepts": [ {} ], "error": "string"}{ "error": { "code": "string", "message": "string", "details": { "property1": null, "property2": null } }}{ "error": { "code": "string", "message": "string", "details": { "property1": null, "property2": null } }}{ "error": { "code": "string", "message": "string", "details": { "property1": null, "property2": null } }}Commit the session scratch onto the project's active composition POST
Required permission: projects:write
Open a live compose session POST
Boot a warm reactive render session for the project. Render frames on demand via the session's /render endpoint; closed automatically after idle TTL or explicitly via DELETE. Optionally seed the session scratch FROM a supplied composition (seedComposition) instead of the project's active — the body is optional (a bodyless open derives from active).