# David Protein

**Canonical:** https://apis.io/providers/david-protein/  
**Website:** https://davidprotein.com  
**APIs profiled:** 4

David is a New York nutrition company founded in 2023 by RXBAR co-founder Peter Rahal, selling high-protein bars (28g protein, 150 calories, 0g sugar), the Bronze and Gold bar lines, and protein ice cream pints direct-to-consumer, through wholesale, and in retail. David runs no developer program and publishes no OpenAPI, but its Shopify-hosted storefront at davidprotein.com serves a complete agent-commerce surface from its own hostnames: an agents.md / llms.txt instruction document, a Universal Commerce Protocol (UCP) merchant profile at /.well-known/ucp, OAuth 2.0 and OpenID Connect discovery documents, and three live Model Context Protocol servers covering catalog search, product lookup, cart, checkout, shop policy Q&A, order status and returns.

## Kin Score — 32.9 / 100 (thin)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 32.9).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 0.0 |
| Governance | 12.5 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 52.2 |
| Commercial Clarity | 44.7 |

Regulatory layer — **Payments**: 54.7 (matched via tags).

## Agent readiness — 35.1 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| MCP Server | yes |
| Auth Clarity | yes |
| Idempotency | documented |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (4)

- **David Protein UCP Commerce MCP** — The Universal Commerce Protocol commerce server David serves at davidprotein.com/api/ucp/mcp, advertised in the store robots.txt and agents.md. Thirteen MCP tools cover catalog ...
- **David Protein Storefront MCP** — The Shopify storefront MCP server David serves at davidprotein.com/api/mcp, declared in the storefront page as window.Shopify.MCP.mcpEndpoint and mirrored into the browser throu...
- **David Protein Customer Account MCP** — The customer-account MCP server David serves at account.davidprotein.com/customer/api/mcp. Four tools: get_most_recent_order_status, get_order_status, get_store_credit_balances ...
- **David Protein Storefront JSON** — The unauthenticated read-only JSON surface David documents in agents.md for agents that only need to browse: /products.json and /collections.json store-wide, /products/{handle}....

## MCP servers (1)

- **david-protein-mcp.yml**

## Security (2)

- **David Protein Authentication** — oauth2/openIdConnect/http · 4 schemes
- **David Protein Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **David Protein Plans Pricing**

## Tags

Agents, MCP, Universal Commerce Protocol, Commerce, E-Commerce, Shopping, Catalog, Checkout, Nutrition, Food and Beverage, Consumer Packaged Goods, Shopify

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/david-protein/). Scores are computed from the provider's own public artifacts under a published rubric.