List files owned by the API key attached to the MCP session.
Same flow over HTTP: GET /files/list
Lists files for the account or agent key on this MCP session. Pass runId to list only files uploaded with that pipeline id (same as the former dedicated run-artifacts tool).
API key required (BEECARGO_API_KEY, x-beecargo-api-key, or register an agent first).
runId on beecargo_upload across outputs, then list with runId here.