Filtering and expressions

Use --project and --filter to match project names and parameter keys. Use --search to search text fields, or --expr to select typed Remote Config data.

Query modes

Flags named --project or --filter accept a mode prefix:

Prefix	Mode
none or ~	Fuzzy match
^	Starts with
/	Contains
=	Exact, case-insensitive

fbrcm get --project '^acme-prod' --filter '^checkout_'
fbrcm get --project '=example-project-id' --filter '=feature_enabled'

Repeated values of the same selector are ORed. Different selector sources are ANDed: for example, a parameter must satisfy --filter, --group, --search, and --expr when all four are supplied.

Project queries match display names, project IDs, and repository aliases. Parameter filters match keys. Positional resource names are different: they match canonical names or IDs exactly and case-sensitively.

Search

Parameter search covers keys, descriptions, groups, and values. Condition search covers names, expressions, colors, and usage data. Search and expressions compose with the other filters rather than replacing them.

Expression language

--expr uses expr-lang and must evaluate to a boolean:

fbrcm get --expr 'value == true'
fbrcm get --expr 'default > 10'
fbrcm get --expr 'name startsWith "checkout_"'
fbrcm get --expr 'conditionals["Beta users"] == true'

Invalid expressions are errors. They never silently become an empty result.

Parameter context

Parameter expressions expose project_id, project, conditions, groups, parameters, name, group, default, value, and conditionals.

• default is only the default slot.
• value matches the default or any conditional slot.
• conditionals selects a value for one named condition.
• root-group parameters compare as group == "(root)" in normal parameter contexts.

Firebase values are typed from valueType: BOOLEAN becomes boolean, NUMBER becomes numeric, and STRING and JSON remain strings. Compatibility comparisons allow a stored boolean or number to match its string representation.

Condition context

conditions list --expr and conditions delete --expr expose name, priority, expression, color, usage_count, and usages, plus the project fields:

fbrcm conditions list example-project-id --expr 'usage_count == 0'
fbrcm conditions list example-project-id --expr 'priority <= 5'
fbrcm conditions list example-project-id \
  --expr 'any(usages, #.parameter startsWith "legacy_")'
fbrcm conditions delete --expr 'expression contains "deprecated.property"' --dry-run

Project context

Project expressions expose project_id, project, conditions, groups, and the complete parameters map:

fbrcm projects list --expr 'project_id startsWith "test-"'
fbrcm projects list --expr '"feature_enabled" in keys(parameters)'
fbrcm projects list --expr 'parameters["feature_enabled"].value == true'

Helpers and JSON values

fbrcm adds is_number, is_string, is_json, is_boolean, is_empty, and an embedded gojq implementation:

fbrcm get --expr 'is_string(value) && is_empty(value)'
fbrcm get --expr 'value | jq(.enabled == true)'
fbrcm get --expr '(default | jq(.limit)) > 10'

No external jq executable is required. Invalid JSON values simply do not match a jq(...) predicate.