Developer guides

Start with the task

Read HL7 delimiters and field positions — Inspect MSH numbering, repeated fields, custom separators and preserved escape sequences with a synthetic HL7 v2 message.

Format JSON without losing numeric precision — Preserve number and escape tokens, export complete arrays, and understand which whitespace the JSON formatter changes.

Understand the limited FHIR R4 checks — See exactly which Patient, Observation, Bundle and OperationOutcome checks run, with synthetic examples and explicit conformance limits.

Use the guides in your workflow

Every guide is available as ordinary HTML and Markdown. Use the Markdown link to read or download the same explanations and examples in an editor, terminal, or AI assistant. No sign-in or JavaScript is required to read them.

For an assistant, start with the guide URL and a synthetic example. Ask it to explain the expected result, then check that result in the linked browser tool. These are reference documents; they do not give an assistant a connection to your browser input or expose a hosted tool API.

The browser tools process input locally. Copying input into another service or AI conversation changes where it goes. Use synthetic data when sharing examples, and check your organization’s data-handling requirements before using external services. Read our data handling explanation.

Versions and scope

Examples are tested against the workspace modules. Parsing, formatting, and limited structure checking are different jobs; none establishes full HL7 or FHIR conformance. Each guide describes its supported behavior and limitations.

See the workspace release notes and separate source projects and the versioned tool manifest. The website’s workspace modules and public project releases are tracked separately.