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Version: v0.0.4

Installation

@cosyte/cli ships the cosyte command as a Node.js executable, alongside cosyte-mcp. A global install is the simplest route; npx works too, with one flag noted under Run it.

Status: pre-alpha (0.0.x), and there is no installable release yet. The newest version on npm is 0.0.2, and 0.0.1 and 0.0.2 are both uninstallable: see If you are on 0.0.1 or 0.0.2. The packaging defect is fixed in the repository and proven by installing the packed tarball, but a published version is immutable, so the fix arrives with the next release. Until then, run the CLI from a source checkout. FHIR support is unavailable in an installed copy for a separate reason, described under What is not available from npm.

If you are on 0.0.1 or 0.0.2​

Both are on npm, and npm install @cosyte/cli fails on either with an ENOENT:

npm error code ENOENT
npm error path node_modules/@cosyte/cli/vendor/cosyte-fhir-0.0.0.tgz
npm error enoent ENOENT: no such file or directory

npx and npm install -g fail identically. There is no consumer-side workaround, and nothing is wrong with your environment.

Those manifests declared the ten @cosyte/* sibling packages as local file paths (file:vendor/*.tgz) instead of npm version ranges. The tarballs are not part of the published package, so npm resolved the paths against a directory that is not there. A published version is immutable, so both stay broken. The fix ships as a later version, which does not exist yet; run the CLI from a source checkout in the meantime.

What is not available from npm​

The siblings the CLI wraps are now real npm ranges, with one exception that is worth stating plainly rather than discovering at runtime.

@cosyte/fhir is not on the npm registry. It cannot be a dependency of this package, so an installed @cosyte/cli has no FHIR library and:

  • parse, inspect, fmt and validate on FHIR input report CLI_PARSER_UNAVAILABLE and exit 69. They do not guess, and they do not fail as though your input were bad.
  • convert reports the same, because it needs both @cosyte/fhir and @cosyte/transform, and @cosyte/transform in turn requires @cosyte/fhir, so npm skips it as an unresolvable optional dependency.

Everything else works from a plain install: HL7 v2 (@cosyte/hl7), map-codes (@cosyte/terminology), and the six breadth formats X12, C-CDA, DICOM, NCPDP, ASTM and MLLP, which are optional dependencies that do resolve, so a default install has all six.

Do not install with --omit=optional. It succeeds, but the cosyte command then fails to start at all on a missing @modelcontextprotocol/sdk, before it reaches any command. Known defect, tracked separately.

To use the FHIR commands today, run the CLI from source, where the FHIR library is supplied locally:

git clone https://github.com/cosyte/cli && cd cli
pnpm install && pnpm build
node dist/bin/cosyte.mjs --help

Prerequisites​

  • Node.js >= 22 (the whole @cosyte/* suite targets ES2023 / Node 22+).
  • A package manager: pnpm, npm, or yarn.

Run it​

Install globally to put cosyte on your PATH:

npm install -g @cosyte/cli
cosyte --help

Or run it without installing, naming the executable explicitly:

npx --package @cosyte/cli cosyte parse message.hl7

The short form npx @cosyte/cli … does not work, and it is a separate matter from the packaging defect above: it fails with could not determine executable to run. When a package ships more than one executable, npx runs the one whose name matches the package name's last segment, which would be cli; this package ships cosyte and cosyte-mcp. Use --package as above. A cli alias is deliberately not added, because npm install -g would then claim a command called cli on your PATH.

Programmatic API​

The same core the CLI uses is available as a small library (the . subpath): the format autodetector, the exit-code contract, and the value-free diagnostic types:

import { VERSION } from "@cosyte/cli";

VERSION; // => "0.0.4"

If that resolves and prints the release you installed, the install is good: head to the Quickstart.

VERSION was wrong in 0.0.1 and 0.0.2. Both shipped exporting 0.0.0, and cosyte --version printed that too. This page asserted only typeof VERSION back then, which is true of every wrong value, so it stayed green across both. The constant is now kept in lockstep with the manifest by the release tooling and compared against it in the test suite, and the literal above is rewritten by that same step. A published version is never re-published, so those two copies stay wrong on the registry; if you have one, read the manifest instead, which was always correct: node -p "require('@cosyte/cli/package.json').version".