# io.github.Densys/value-us

> Verified deals, store policies & a trust score for thousands of online retailers. No auth.

- name: io.github.Densys/value-us
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 72/100 flags: no-repository
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.Densys%2Fvalue-us
- tools: https://api.protogrid.dev/v1/servers/io.github.Densys%2Fvalue-us/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "value-us": {
      "type": "http",
      "url": "https://value.us/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 99
- freshness: 65
- provenance: 45
- drivers: +website +reachable +uptime-97% ~updated-135d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### 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: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: find_deals (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); check_retailer_trust (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); lookup_retailer (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
- pass `tools.token_cost`: about 447 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

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

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

- tools: 3, about 447 tokens to load them all
- tool set hash: ad26b18226b53a5f0f954c706a6483ce
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.Densys/value-us.svg)](https://protogrid.dev/servers/io.github.Densys/value-us)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://value.us/mcp (streamable-http, auth none, reachable true, uptime30d 0.9655172)

## Packages

_none_

## Tools (3)

- `check_retailer_trust`: Get value.us's proprietary VUS score (0-5) for a retailer and when its data was last verified. The VUS score measures how much current, verified data value.us holds on the store (a data-confidence signal) - it is NOT a verdict on whether the store is trustworthy or safe to buy from.
- `find_deals`: Find online retailers that currently have a specific kind of verified deal or policy, ranked. Use for questions like 'who has free shipping', 'which stores give a student discount', or 'what's on sale now'.
- `lookup_retailer`: Look up verified deals and store policies for a specific online retailer: signup/newsletter offer, free-shipping threshold, return window, price-match, gift cards, student/military discounts, current sale, and the value.us VUS score (our data-confidence rating). Input a store name or domain.