---
title: "Regenerate Pipeline"
method: POST
path: "/pipeline/{session_id}/regenerate"
tags: ["pipeline"]
---

# Regenerate Pipeline

`POST /pipeline/{session_id}/regenerate`

Regenerate specific pipeline steps from cached data.

Useful for re-running texture generation with different prompts/opacity
without re-discovering materials.

## Path parameters

- `session_id` string, required

## Request body

- RegenerateRequest — Request to regenerate specific steps from cache.
  - `steps` TexturePipelineStep[], required — Steps to re-run from cache (at least one)
  - `material_textures` object, nullable — Override per-material prompt/opacity for regeneration
  - `texture_unit_ids` string[], nullable — Exact approved texture-plan unit IDs to regenerate. Omit to regenerate every approved unit when generate_textures is selected.

## Response `202`

Successful Response

- SessionCreated — Response when session is created.
  - `session_id` string, required
  - `status` string
  - `message` string
  - `estimated_duration_minutes` integer, nullable — Estimated completion time
  - `plan_url` string, nullable — Stable texture-plan endpoint for this session; returns 404 until planning has produced texture_plan.json.

## Other responses

- `422` — Validation Error

## Changes

- **2026-07-21** `90f9a177effa` — 11 info
  - added the new optional request property `material_textures/anyOf[subschema #1]/additionalProperties/detail_policy`
  - added the new optional request property `material_textures/anyOf[subschema #1]/additionalProperties/material_path`
  - added the new optional request property `material_textures/anyOf[subschema #1]/additionalProperties/multiview_image_uris`
  - added the new optional request property `material_textures/anyOf[subschema #1]/additionalProperties/per_prim/anyOf[subschema #1]/additionalProperties/detail_policy`
  - …7 more
- **2026-04-30** `f1aa452697e3` — 2 breaking, 2 info
  - added the new required request property `material_textures/anyOf[subschema #1]/additionalProperties/prompt`
  - the `steps` request property's minItems was increased to `1`
  - added the new optional request property `material_textures/anyOf[subschema #1]/additionalProperties/opacity`
  - added the new optional request property `material_textures/anyOf[subschema #1]/additionalProperties/per_prim`
- **2026-04-29** `12695b6a0290` — 3 warning
  - removed the request property `material_textures/anyOf[subschema #1]/additionalProperties/opacity`
  - removed the request property `material_textures/anyOf[subschema #1]/additionalProperties/per_prim`
  - removed the request property `material_textures/anyOf[subschema #1]/additionalProperties/prompt`

[Change history](https://skmtc.dev/nvidia/apis/texture-agent-service/changes/pipeline/:session_id/regenerate/post.md)

---

[API](https://skmtc.dev/nvidia/apis/texture-agent-service.md) · [All operations](https://skmtc.dev/nvidia/apis/texture-agent-service/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/nvidia/texture-agent-service/revisions/1ba426fbca03/schema)