# Design Revision Loop (Pre-Proof) Agent Pack

> Design Revision Loop (Pre-Proof) Agent Pack is a paid API for AI agents from nwb-vending.com, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-15).

Retrieves a structured agent playbook for managing design revision cycles with clients before proof approval in print/signage/materials workflows.

## Facts

- Endpoint: POST https://nwb-vending.com/2nd-pages/materials-factory/templates/design-revision-loop/full/playbook.json
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/design-revision-loop-pre-proof-agent-pack-84aa69c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Jqxe__MXF0q-knwrAPFDR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability design-revision-loop-pre-proof-agent-pack-84aa69c4 -d '<json body>'
```

Example prompt: Pull up the design revision loop playbook — I need to set up an agent to handle pre-proof revision rounds with my client for this signage job so we can track change requests and approvals before we go to final proof.

## When to prefer this

Use this endpoint when you need a ready-made, structured agent workflow for handling iterative design revision rounds with clients before final proof approval in print, signage, or materials production jobs. Prefer this over building custom revision logic when you want a pre-tested, templated approach that covers client communication, change tracking, and pre-proof sign-off steps.

## Known failure modes

- Pack not found or unavailable: returns 404 or empty payload
- Payment not processed: x402 payment required before content is served
- Network timeout: endpoint unreachable, retry recommended
- Schema mismatch: pack_id const not matched, returns validation error

## How this service works

NWB Vending. Practical solutions for small business problems in Kuna, Idaho.

## Output

Returns a structured JSON playbook (mf-tpl-042) containing agent instructions, workflow steps, client communication templates, and automation logic for managing design revision cycles with clients prior to proof sign-off in materials/print production contexts.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "version": "2.0.0",
  "artifact": "mf-tpl-042",
  "audience": "agent"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/design-revision-loop-pre-proof-agent-pack-84aa69c4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nwb-vending.com](https://www.zero.xyz/host/nwb-vending.com/llms.txt)