An agent driving Blender made its concepts, meshes and render reviews
through a tool server of the game's own, which called this gateway; the
gateway's MCP server offered only the memory notes. It now offers
generate_image, generate_mesh, review_images, run_workflow, job_status and
gateway_status beside them, each only where a model for it is here.
Each tool makes its request of the client API as the caller, through the
handler Handler built, key check and all: allowlists, limits, licences
left out, budgets and accounting apply as to any request, and a job is
the caller's. What a tool makes is kept as the caller's file and answered
by id and download URL, since a server over HTTP cannot write to the
caller's disk; a picture comes with a 512 px preview, and whole where no
file can be kept. A picture to work from is a file id, a data URL or
base64; one sent to the vision model is shrunk to 1280 px.
A mesh takes minutes. A client that takes a stream is answered as
server-sent events, with notifications/progress for its token while the
job is queued, waiting for the GPU and running, and waits up to ten
minutes; one that does not waits 50 seconds and gets the job id, which
job_status asks after.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
