Arazzo Runtime Expression
Apache-2.0
A parser, validator, extractor and interpolator for Arazzo Runtime Expressions — the `$inputs.x`, `$steps.y.outputs.z`, `$response.body#/pointer` syntax every step, output and criterion depends on. A small, exact library for the part of the specification that runners most often get subtly wrong, from the maintainer of the ApiDOM Arazzo namespace.
Arazzo
Specifications it implements
What this tool does to each specification, in the role vocabulary. Follow a standard through to standards.apievangelist.com for what it actually specifies.
| Standard | Role | What that means |
|---|---|---|
| Arazzo | parsesalso validates, evaluates |
Using this from an agent
- Interfaces
library- Install
-
npm
@swaggerexpert/arazzo-runtime-expression - Consumes
- arazzo
- Emits
- javascript
- Runtime
- Runs offline Deterministic Read-only No credentials
Where it applies
Jobs this tool actually does, and the surface each one is exercised on.
Validate or evaluate the runtime expressions in an Arazzo document without writing a grammar.
coding-agentci-pipeline
Covers the expression grammar across Arazzo 1.0 and 1.1; it does not resolve HTTP messages for you.
- Website
- https://github.com/swaggerexpert/arazzo-runtime-expression
- Repository
- https://github.com/swaggerexpert/arazzo-runtime-expression
- License
- Apache-2.0 — reported by the GitHub API, verified 2026-10-06
- Stars
- 5 · last commit 2026-10-05
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