kosli evaluate input

[BETA] Evaluate a local JSON input against a Rego policy.

Synopsis

kosli evaluate input [flags]

[BETA] Evaluate a local JSON input against a Rego policy. Read JSON from a file or stdin and evaluate it against a Rego policy. The input file should contain the raw JSON object your policy expects — not the wrapper produced by --show-input. Use jq '.input' to extract the policy input from a --show-input --output json capture.

The policy must use package policy and define an allow rule. An optional violations rule (a set of strings) can provide human-readable denial reasons.

By default a deny exits with code 1. Pass --no-assert to print the verdict and exit 0 even on deny, when this command is feeding another tool as a policy decision point.

When --input-file is omitted, JSON is read from stdin.

Use --params to pass configuration data to the policy as data.params. This accepts inline JSON or a file reference (@file.json).

Flags

Flag	Description
—assert	[optional] Exit with a non-zero status when the policy denies. This is the current default; pass —assert to lock it in across future releases.
-h, —help	help for input
-i, —input-file string	[optional] Path to a JSON input file. Reads from stdin if omitted.
—no-assert	[optional] Print the result and always exit 0, even when the policy denies. Use when this command feeds another tool as a policy decision point.
-o, —output string	[defaulted] The format of the output. Valid formats are: [table, json]. (default “table”)
—params string	[optional] Policy parameters as inline JSON or @file.json. Available in policies as data.params.
-p, —policy string	Path to a Rego policy file to evaluate against the input.
—show-input	[optional] Include the policy input data in the output.

Flags inherited from parent commands

Flag	Description
-a, —api-token string	The Kosli API token.
-c, —config-file string	[optional] The Kosli config file path. (default “kosli”)
—debug	[optional] Print debug logs to stdout. A boolean flag docs (default false)
-H, —host string	[defaulted] The Kosli endpoint. (default “https://app.kosli.com”)
—http-proxy string	[optional] The HTTP proxy URL including protocol and port number. e.g. http://proxy-server-ip:proxy-port
-r, —max-api-retries int	[defaulted] How many times should API calls be retried when the API host is not reachable. (default 3)
—org string	The Kosli organization.

Live Examples in different CI systems

GitHub

View an example of the kosli evaluate input command in GitHub.

In this YAML file

Examples Use Cases

These examples all assume that the flags --api-token, --org, --host, (and --flow, --trail when required), are set/provided.

capture trail data for local policy iteration

kosli evaluate trail TRAIL --flow FLOW
	--policy allow-all.rego
	--show-input --output json | jq '.input' > trail-data.json

then iterate on your policy locally

kosli evaluate input
	--input-file trail-data.json
	--policy policy.rego

evaluate and show the data passed to the policy

kosli evaluate input
	--input-file trail-data.json
	--policy policy.rego
	--show-input
	--output json

read input from stdin

cat trail-data.json | kosli evaluate input
	--policy policy.rego

evaluate with policy parameters (inline JSON)

kosli evaluate input
	--input-file trail-data.json
	--policy policy.rego
	--params '{"threshold": 3}'

evaluate with policy parameters from a file

kosli evaluate input
	--input-file trail-data.json
	--policy policy.rego
	--params @params.json

evaluate as a decision point (print verdict, never fail the step)

kosli evaluate input
	--input-file trail-data.json
	--policy policy.rego
	--no-assert