HL7 Developer Toolkit

Phase 1 preview: tools are released in phases

HL7 Development and Troubleshooting, Simplified

Paste an HL7 v2 message and read it as structured segments, fields and components. Compare messages and prepare Mirth Connect snippets as those tools arrive. Made for the people who keep healthcare interfaces running.

Try HL7 Inspector Explore Features

No account needed for the Inspector preview. Use synthetic or de-identified data only.

Synthetic sample: ADT^A01HL7 v2.5.1
MSH|^~\&|SENDAPP|SENDFAC|RECVAPP|RECVFAC|20261010093000||ADT^A01^ADT_A01|MSG00001|P|2.5.1
EVN|A01|20261010093000
PID|1||000123^^^SENDFAC^MR||DOE^JANE^Q||19800101|F|||123 SAMPLE ST^^EXAMPLEVILLE^ZZ^00000^USA||^PRN^PH^^^555^0100
PV1|1|I|WARD1^101^A^SENDFAC||||1234^SAMPLE^DOCTOR^A
PID-5
Patient name: DOE^JANE^Q
PID-5.1
Family name: DOE
PV1-2
Patient class: I
Made-up data for illustration. No real patient information.

Readable at a glance

Segments, fields and components are split out, so you can find a value without counting pipes.

Made for troubleshooting

Designed around two questions: what did this interface actually send, and what changed between these messages?

Privacy-minded by default

The Inspector preview parses in your browser. Nothing you paste is sent to our server.

What the toolkit is for

Two tools have a working preview today. The others are planned and are labelled so.

Message inspection Preview

Break an HL7 v2 message into segments, fields, components and subcomponents using the delimiters declared in MSH.

Open the Inspector

Field navigation Preview

Read values by address, such as PID-5.1, and move between segments instead of counting delimiters.

Learn more

Message comparison Planned

Put two messages side by side and see which fields differ, for example before and after a transformation.

Learn more

Mirth Connect helper tools Planned

Helpers for working with messages in Mirth Connect channels, such as field-path references for transformers.

Learn more

From a failing message to a lead

A typical troubleshooting session with the Inspector preview.

  1. Paste a message. Copy a synthetic or de-identified HL7 v2 message from a log or test tool.
  2. Read its structure. Open a segment to see each field and its components, labelled by address.
  3. Narrow it down. Check the message type, control ID and version in the summary, then look at the fields your interface depends on.

Proposed plans

These are proposed test prices, not final commitments. Checkout is not connected yet.

Free

Explore the Inspector with small messages.

$0/month

Proposed test price, not final

Try HL7 Inspector
  • HL7 Message Inspector (segment and field view) Preview
  • Messages up to 20 KB Preview
  • Parsing runs in your browser Preview
  • Documentation and reference tables Preview

Proposed core paid plan

Developer

For individual developers who inspect messages every week.

$6.99/month

Proposed test price, not final

Ask about early access

Everything in Free, plus:

  • Messages up to 200 KB Planned
  • Two-message comparison Planned
  • Basic Mirth Connect helper tools Planned
  • Saved snippets (up to 50) Planned

See the full plan

Pro

For heavier workloads and larger interface projects.

$12.99/month

Proposed test price, not final

Ask about early access

Everything in Developer, plus:

  • Messages up to 1 MB Planned
  • Multi-message files (up to 500 messages) Planned
  • Comparison with configurable ignore rules Planned
  • Full Mirth Connect helper set Planned

See the full plan

Compare plans in detail

Frequently asked questions

What is HL7 Developer Toolkit?

A set of browser-based tools for people who work with HL7 v2 messages: integration engineers, interface analysts and Mirth Connect developers. The goal is to make reading, navigating and troubleshooting messages faster. The tools are being released in phases, and this site shows what exists today and what is planned.

Is my message data uploaded to your servers?

Not in the current Inspector preview. The text you paste is parsed by JavaScript in your browser and is not sent to the server. Even so, please use synthetic or properly de-identified messages only, and do not paste real patient data.

Does the Inspector validate messages or certify conformance?

No. The preview splits a message into segments, fields, components and subcomponents so you can read it. It does not validate against HL7 standards, implementation guides or any conformance profile, and it makes no compliance claims. If validation features are added later, their scope and limits will be documented.

Which HL7 versions are supported?

The preview reads pipe-delimited HL7 v2.x messages structurally, using the delimiters declared in the MSH segment. It does not yet include version-specific data dictionaries. HL7 v3 and FHIR are out of scope for now.

Are you affiliated with Mirth Connect, NextGen or HL7 International?

No. This is an independent project. HL7 and Mirth are trademarks of their respective owners, and their names are used here only to describe what the tools work with.

Are the prices final?

No. The plans and prices on this site are proposed test values and may change. Checkout is not connected, and no paid plan can be purchased yet.

Open a message and take a look

The Inspector preview is free to try and needs no account.

Try HL7 Inspector Read the documentation