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fhir-developer-skill

Maintainer FreedomIntelligence · Last updated April 1, 2026

FHIR API development guide for building healthcare endpoints. Use when: (1) Creating FHIR REST endpoints (Patient, Observation, Encounter, Condition, MedicationRequest), (2) Validating FHIR resources and returning proper HTTP status codes and error responses, (3) Implementing SMART on FHIR authorization and OAuth scopes, (4) Working with Bundles, transactions, batch operations, or search pagination. Covers FHIR R4 r….

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Original source

FreedomIntelligence/OpenClaw-Medical-Skills

https://github.com/FreedomIntelligence/OpenClaw-Medical-Skills/tree/main/skills/fhir-developer-skill

Maintainer: FreedomIntelligence
License: MIT
Last updated: April 1, 2026

Skill Snapshot

Key Details From SKILL.md

2 min

Key Notes

Only validate fields with cardinality starting with "1" as required.
Common mistake: Making subject or period required on Encounter. They are 0..1 (optional).
Invalid enum values must return 422 Unprocessable Entity.

Source Doc

Excerpt From SKILL.md

HTTP Status Codes

Code	When to Use
`200 OK`	Successful read, update, or search
`201 Created`	Successful create (include `Location` header)
`204 No Content`	Successful delete
`400 Bad Request`	Malformed JSON, wrong resourceType
`401 Unauthorized`	Missing, expired, revoked, or malformed token (RFC 6750)
`403 Forbidden`	Valid token but insufficient scopes
`404 Not Found`	Resource doesn't exist
`412 Precondition Failed`	If-Match ETag mismatch (NOT 400!)
`422 Unprocessable Entity`	Missing required fields, invalid enum values, business rule violations

Required Fields by Resource (FHIR R4)

Resource	Required Fields	Everything Else
Patient	(none)	All optional
Observation	`status`, `code`	Optional
Encounter	`status`, `class`	Optional (including `subject`, `period`)
Condition	`subject`	Optional (including `code`, `clinicalStatus`)
MedicationRequest	`status`, `intent`, `medication[x]`, `subject`	Optional
Medication	(none)	All optional
Bundle	`type`	Optional

Observation.status

Use cases

Use when: (1) Creating FHIR REST endpoints (Patient, Observation, Encounter, Condition, MedicationRequest), (2) Validating FHIR resources and returning proper HTTP status codes and error responses, (3) Implementing SMART on FHIR authorization and OAuth scopes, (4) Working with Bundles, transactions, batch operations, or search pagination.

Not for

Do not rely on this catalog entry alone for installation or maintenance details.

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