# Feed Audit (Product Feed Hygiene)

> Audits a product feed (XML/CSV/JSON) for Google Shopping disapproval errors. $1.00/call via x402.

- name: io.github.theharrisontruong-web/feed-audit
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 93/100 flags: duplicate-repo
- quality: 91/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.theharrisontruong-web%2Ffeed-audit
- tools: https://api.protogrid.dev/v1/servers/io.github.theharrisontruong-web%2Ffeed-audit/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "feed-audit": {
      "type": "http",
      "url": "https://feed-al6bxcngia-ue.a.run.app/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-100% +updated-1d-ago -duplicate-repo(4 names)
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 91/100 (new)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 94 (weight 30)

- pass `tools.descriptions`: every tool has a description
- warn `tools.description_length`: 1 tools have descriptions over 1,024 characters, which crowds the context
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 2 of 2 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 634 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump
- pass `tools.hidden_text`: no hidden text in tool names, descriptions, schemas or annotations

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`, `stability.new_links`: tool history recorded for 1 of the 7 days needed

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 2, about 634 tokens to load them all
- tool set hash: b9de16936bcce25eee6d8b164d13c39c
- tools last changed: 2026-11-13T13:08:13.249Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.theharrisontruong-web/feed-audit.svg)](https://protogrid.dev/servers/io.github.theharrisontruong-web/feed-audit)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-11-13 `audit_feed_lite` changed (annotations)
- 2026-11-13 `audit_feed` changed (annotations)

Full history: https://api.protogrid.dev/v1/servers/io.github.theharrisontruong-web%2Ffeed-audit/changes

## Remotes

- https://feed-al6bxcngia-ue.a.run.app/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (2)

- `audit_feed`: Full product feed hygiene scan of a product feed URL (Google Shopping-style XML, CSV, or JSON — format auto-detected). Fetches the feed server-side and runs 20 weighted checks: parse validity and encoding, required attributes (id, title, link, price, availability values, image_link), GTIN/MPN and brand coverage, identifier_exists misuse, title/description quality, image-link spot-checks, price format and sale_price logic, taxonomy and shipping/tax presence, duplicate ids and variant grouping. These are the errors behind Google Merchant Center disapprovals — a disapproved feed means the products do not serve on Google Shopping at all, and agent-commerce surfaces referencing Merchant Center IDs inherit the same dirt. Returns machine-readable JSON: 0-100 score, A-F grade, a disapproval-risk level (Low/Moderate/Elevated/High) with the failing disapproval-class checks named, per-check pass/partial/fail/unknown with evidence, the worst-offending items sampled with concrete fixes, and the top 3 prioritized fixes. HONEST LIMITS: the scan validates the feed document (capped at 8 MB, first 20,000 items, 8 image spot-checks); it does not crawl landing pages, so feed-vs-page price/availability mismatches are out of scope. Cost: $1.00 USDC on Base per call, paid via x402 — the caller's agent pays from its owner's approved wallet; no API key needed. Use this after every catalog change, before a Shopping campaign launch, or to triage a disapproval wave.
- `audit_feed_lite`: FREE lite product feed hygiene scan of a product feed URL (XML, CSV, or JSON — auto-detected). Runs the same 20 checks as audit_feed but returns top-line results only: 0-100 score, A-F grade, disapproval-risk level, detected format, item count, check counts, and the titles of the top gaps — item-level detail is capped (no per-check evidence, no offending items, no detailed fixes). Use this to triage whether a feed needs the full audit_feed report, or call audit_feed directly for the complete evidence-backed scan.