# Manifest Version Diff

> Manifest Version Diff is a paid API for AI agents from phion.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Identifies changed fields and hashes between two versions of an agent or software manifest

## Facts

- Endpoint: POST https://phion.systems/v1/paid/trust/manifest-version-diff
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/manifest-version-diff-10a27d4c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ANiwzta0nEZP-TaQ9zNxS

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 manifest-version-diff-10a27d4c -d '<json body>'
```

Example prompt: Compare these two versions of the deployment manifest and tell me exactly which fields and hashes have changed between them — I need to know if anything unexpected was modified before we proceed.

## When to prefer this

Use this endpoint when you need a precise, field-level diff between two manifest versions — especially in agent trust pipelines, deployment gates, or tamper-detection workflows where knowing exactly which fields or hashes changed is critical for security decisions. Prefer it over generic diff tools when the output needs to be structured and machine-readable for downstream policy enforcement.

## Known failure modes

- Malformed or missing manifest input returns a validation error
- Identical manifests return an empty diff with no changes detected
- Unsupported manifest schema version may cause parsing failure
- Network timeout on large manifests may return a 408 or 504
- Missing required fields in either manifest version causes a 400 bad request

## How this service works

Identify changed manifest fields and hashes

## Output

A structured diff report listing each manifest field that changed between the two versions, including old and new values and any hash mismatches, enabling precise identification of what was altered.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/manifest-version-diff-10a27d4c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from phion.systems](https://www.zero.xyz/host/phion.systems/llms.txt)