# Shoe Fit Checker

> Bounded footwear fit checks for a specific shoe, person, and intended use.

- name: io.github.anburan-tech/shoe-fit-checker
- version: 0.1.0
- connection class: R0 (autonomous)
- trust: 91/100
- quality: 92/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.anburan-tech%2Fshoe-fit-checker
- tools: https://api.protogrid.dev/v1/servers/io.github.anburan-tech%2Fshoe-fit-checker/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "shoe-fit-checker": {
      "type": "http",
      "url": "https://shoe-fit-checker.onrender.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 85
- provenance: 80
- drivers: +repository +namespace-matches-repo +reachable +uptime-100% ~updated-36d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 92/100 (strong)

### 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: 93 (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`: 1 of 1 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 941 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`: 2 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: 1, about 941 tokens to load them all
- tool set hash: 4df3cbbb36c2e07c5b78f3fe2b1c6490
- tools last changed: 2026-10-17T20:00:55.021Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.anburan-tech/shoe-fit-checker.svg)](https://protogrid.dev/servers/io.github.anburan-tech/shoe-fit-checker)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-17 `check_footwear_fit` changed (description)
  - before: Use when the user needs a bounded fit judgment about whether a specific finished footwear product is likely to work for a specific person in a stated use context, including pressure, toe contact, heel slip, width/size questions, dynamic-use problems, keep/exchange decisions, and fit-driven alternatives. Do not use for generic shoe education, style advice, simple size conversion, or medical diagnosis/treatment. When presenting a returned fit judgment, preserve the tool's decision, unknowns, next steps, alternatives, professional boundary, evidence state, and execution provenance. When coreJudgment is present, preserve its primaryState, reasonCodes, criticalUnknownIds, Case/Rule Set identity, and do not replace them with stronger host conclusions. Do not add or strengthen unverified product facts, gait or biomechanical labels, medical causal explanations or diagnoses, or extra size/width/lacing/product prescriptions unless they were independently established as verified evidence in the request. Keep any separately sourced external information clearly separate from the bounded fit judgment.
  - after: Use for a specific finished footwear product and the person's reported interaction. English is the primary consumer-language coverage; full Chinese interpretation is deferred. Without a complete approved canonical request, the three limited prototype paths are activity-related compression or numbness, instep pressure with a width comparison, and downhill toe-front contact. Heel retention, blister and ground-traction concerns can be acknowledged but cannot receive a new formal judgment or corrective prescription here. Prototype results are not formal Core conclusions. Do not use for cross-brand recommendations, product ranking, generic shoe education, style advice, simple size conversion, or medical diagnosis/treatment. When presenting a returned fit judgment, preserve the tool's decision, unknowns, next steps, alternatives, professional boundary, evidence state, and execution provenance. When coreJudgment is present, preserve its primaryState, reasonCodes, criticalUnknownIds, Case/Rule Set identity, and do not replace them with stronger host conclusions. Do not add or strengthen unverified product facts, gait or biomechanical labels, medical causal explanations or diagnoses, or extra size/width/lacing/product prescriptions unless they were independently established as verified evidence in the request. Keep any separately sourced external information clearly separate from the bounded fit judgment.
- 2026-10-01 `check_footwear_fit` changed (description, inputSchema, outputSchema)
  - before: Use when the user needs a bounded fit judgment about whether a specific finished footwear product is likely to work for a specific person in a stated use context, including pressure, toe contact, heel slip, width/size questions, dynamic-use problems, keep/exchange decisions, and fit-driven alternatives. Do not use for generic shoe education, style advice, simple size conversion, or medical diagnosis/treatment. When presenting a returned fit judgment, preserve the tool's decision, unknowns, next steps, alternatives, professional boundary, and evidence state. Do not add or strengthen unverified product facts, gait or biomechanical labels, medical causal explanations or diagnoses, or extra size/width/lacing/product prescriptions unless they were independently established as verified evidence in the request. Keep any separately sourced external information clearly separate from the bounded fit judgment.
  - after: Use when the user needs a bounded fit judgment about whether a specific finished footwear product is likely to work for a specific person in a stated use context, including pressure, toe contact, heel slip, width/size questions, dynamic-use problems, keep/exchange decisions, and fit-driven alternatives. Do not use for generic shoe education, style advice, simple size conversion, or medical diagnosis/treatment. When presenting a returned fit judgment, preserve the tool's decision, unknowns, next steps, alternatives, professional boundary, evidence state, and execution provenance. When coreJudgment is present, preserve its primaryState, reasonCodes, criticalUnknownIds, Case/Rule Set identity, and do not replace them with stronger host conclusions. Do not add or strengthen unverified product facts, gait or biomechanical labels, medical causal explanations or diagnoses, or extra size/width/lacing/product prescriptions unless they were independently established as verified evidence in the request. Keep any separately sourced external information clearly separate from the bounded fit judgment.

Full history: https://api.protogrid.dev/v1/servers/io.github.anburan-tech%2Fshoe-fit-checker/changes

## Remotes

- https://shoe-fit-checker.onrender.com/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (1)

- `check_footwear_fit`: Use for a specific finished footwear product and the person's reported interaction. English is the primary consumer-language coverage; full Chinese interpretation is deferred. Without a complete approved canonical request, the three limited prototype paths are activity-related compression or numbness, instep pressure with a width comparison, and downhill toe-front contact. Heel retention, blister and ground-traction concerns can be acknowledged but cannot receive a new formal judgment or corrective prescription here. Prototype results are not formal Core conclusions. Do not use for cross-brand recommendations, product ranking, generic shoe education, style advice, simple size conversion, or medical diagnosis/treatment. When presenting a returned fit judgment, preserve the tool's decision, unknowns, next steps, alternatives, professional boundary, evidence state, and execution provenance. When coreJudgment is present, preserve its primaryState, reasonCodes, criticalUnknownIds, Case/Rule Set identity, and do not replace them with stronger host conclusions. Do not add or strengthen unverified product facts, gait or biomechanical labels, medical causal explanations or diagnoses, or extra size/width/lacing/product prescriptions unless they were independently established as verified evidence in the request. Keep any separately sourced external information clearly separate from the bounded fit judgment.