fhir-data-model-design

fhir-data-model-design is a skill for Claude Code, Codex from StanfordSpezi/SpeziVibe. It costs 32 tokens per session (4,504 once invoked), scanned A, original, MIT.

A detailed design for representing an app’s clinical data using FHIR R4, a specific version of the healthcare data exchange standard. It maps health concepts to standard resource types, terms, and relationships.

In plain words
What is it for?
Use it to define the FHIR resources, profiles, terminology bindings, storage model, API data, and TypeScript types needed to build a healthcare application.
Why use it?
FHIR offers many resource types and multiple ways to represent the same idea, so choosing the wrong structure can cause implementation and migration problems. This process turns earlier health-data planning into a concrete specification.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to define the FHIR resources, profiles, terminology bindings, storage model, API data, and TypeScript types needed to build a healthcare application.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/stanfordspezi/spezivibe/fhir-data-model-design
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add StanfordSpezi/SpeziVibe --skill fhir-data-model-design
Clone the repo
git clone --depth 1 https://github.com/StanfordSpezi/SpeziVibe

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fhir-data-model-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/stanfordspezi/spezivibe/fhir-data-model-design/github.svg)](https://agentmods.dev/skills/stanfordspezi/spezivibe/fhir-data-model-design)
Your own site
<a href="https://agentmods.dev/skills/stanfordspezi/spezivibe/fhir-data-model-design"><img src="https://agentmods.dev/badge/skills/stanfordspezi/spezivibe/fhir-data-model-design/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fhir-data-model-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/stanfordspezi/spezivibe/fhir-data-model-design"><img src="https://agentmods.dev/badge/skills/stanfordspezi/spezivibe/fhir-data-model-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,504 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Prompt Injection · line 6
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00032 $0.04504
Opus 5 $0.00016 $0.02252
Sonnet 5 $0.00006 $0.00901
Haiku 4.5 $0.00003 $0.00450

Measured 11d ago against content hash 042e67c62f57, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

fhir-data-model-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/fhir-data-model-design/SKILL.md · 399 lines

How it starts

The opening of the file, as written. The whole thing — 399 lines — stays where its author put it; the contents beside it link to each section on GitHub.

FHIR Data Model Designer

Design a FHIR R4 data model for your digital health app. Ask questions, map clinical concepts to FHIR resources, then produce a structured data model specification document that you and other agents can use to implement data storage, API calls, and TypeScript types — regardless of backend.

Background

FHIR (Fast Healthcare Interoperability Resources) R4 is the standard for healthcare data exchange. It defines a common vocabulary of resource types, terminologies, and API patterns. Getting the data model right from the start avoids painful migrations later.

The key challenge: FHIR has 140+ resource types, dozens of profiles, and many ways to model the same concept. The right choice depends on your clinical use case, interoperability goals, and terminology requirements.

Relationship to health-data-model-planning: that skill decides what the product's data concepts are and whether FHIR is the right lens; this skill turns those concepts into a concrete FHIR R4 specification. If docs/planning/data-model-brief.md exists, read it first — and treat this skill's output as the authoritative FHIR mapping, superseding the brief's preliminary FHIR recommendations.

FHIR conventions used throughout:

  • App-level IDs stored in identifier (not id) — the FHIR server assigns id
  • Custom code systems: http://[your-app].com/fhir/CodeSystem/[name]
  • Custom identifiers: http://[your-app].com/fhir/identifier/[name]
  • Standard FHIR fields preferred over extensions; extensions only when no standard field fits
  • All API calls use standard FHIR REST: GET /fhir/[ResourceType]?[params], POST /fhir/[ResourceType]

Your Role

You are an expert FHIR architect. You give concrete recommendations — specific resources, terminology codes, profiles, and sample JSON — based on clinical requirements. You are not Socratic; you provide expert answers.

Read the full file on GitHub · 399 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 399 lines · 32 tokens per session scan A 042e67c62f57

Subscribe to this mod's changes

fhir-data-model-design is a skill published in the GitHub repository StanfordSpezi/SpeziVibe (24 stars, last pushed 3d ago), licensed MIT. It adds 32 tokens to every session and 4,504 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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