David Protein
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.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles David Protein the way a machine reads it — 10 machine-readable artifacts across 4 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — David Protein scores 32.9/100 (thin), with a separate agent-readiness read of 35/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
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How we profile David Protein
Each block below is one kind of artifact we hold for David Protein. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 4
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
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
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
david-protein-mcp.yml
MCP SERVERPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
David Protein Rate Limits
RATE LIMITSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
David Protein Scopes
4 scopes · authorizationCode/refreshToken/urn:ietf:params:oauth:grant-type:jwt-bearer
SCOPESResources
Every other property we hold for David Protein — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 2
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 7 ·
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 5
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/david-protein · machine-readable index on apis.io
This is an independent, third-party profile of David Protein, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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