Find failures before gameday.
Generate test messages that match what your vendor actually sends. Validate against real-world patterns. De-identify production data on your machine. Free, open source, and ready in 30 seconds.
Open source (MPL 2.0) · Three healthcare standards · Every major EHR pattern library
You copy an ADT message from production, scrub the obvious identifiers by hand, and use it as your test case. It passes. You build 13 more. They pass too.
Then you go live. And your first real patient — the 83-year-old with the hyphenated name, two insurance plans, and an encounter from 2009 — breaks the interface in the first hour.
The interface that passes on 14 test patients will fail on 14,000 real ones.
That's where Post comes in.
Test
Generate clinically realistic messages for every standard your hospital uses. Vendor-specific patterns — the way Epic, Cerner, and MEDITECH actually format their messages. Lock patient state so every message in a workflow stays coherent.
Protect
Remove all 18 HIPAA identifiers on your machine. No data leaves. Linked messages stay linked. Date-shifted, name-substituted, referential integrity preserved. Compliance without the legal review.
Compare
Field-level diff between two messages or two directories. See exactly what changed, where, and whether it matters. HTML reports you can hand to your team lead or attach to a go-live checklist.
What powers Post under the hood
Standards coverage↓
- HL7 v2.3.1 through v2.8 (278 trigger events, 110 segment definitions)
- FHIR R4 (22 resource types, bundle assembly, validation)
- NCPDP SCRIPT 2017071 (NewRx, RxFill, CancelRx)
Clinical data↓
- 9 terminology packages (LOINC, SNOMED CT, ICD-10, RxNorm, NDC, CVX, HCPCS, ICD-9, CPT)
- Vendor pattern libraries (Epic, Cerner, MEDITECH baselines)
- Temporal coherence across message workflows
Validation modes↓
- Strict: full spec compliance
- Compatibility: real-world variance tolerance
- Vendor profile: field presence, type, and value set validation
Win the day.
Walk into a client engagement with vendor-specific test data generated before you arrive. Validate their existing interfaces against the patterns their EHR actually sends. Hand them a comparison report they didn't know they needed.
Day one credibility. Every engagement.
Generate your first message in 30 seconds.
Is Post really free?↓
Yes. Open source under MPL 2.0. No account. No trial period. No expiration.
What does Post Pro add?↓
Workflow automation, AI-powered triage, enhanced vendor profiles, and field-level diff reports. 14-day free trial.
Does it work on my system?↓
Windows, macOS, Linux. Anywhere .NET 8 runs.
Built for the people who keep healthcare data moving.
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