tool-jqlisted
Install: claude install-skill niksavis/basicly
<!-- Generated by `basicly skills-build` from skill.yaml. Do not edit; edit the source. -->
# tool-jq
## When To Use
- Extract fields from API responses and config outputs.
- Transform nested JSON into concise pipeline-friendly structures.
- Validate JSON shape and enforce required keys in scripts.
## Trusted Commands
```bash
jq . file.json
jq '.fieldName' file.json
jq '{id, name, status}' file.json
jq '[.items[] | {id, name}]' file.json
jq '.items | length' file.json
jq '.items[] | select(.status == "active")' file.json
jq '.name // "unknown"' file.json
jq -r '.name' file.json
jq -c '.items[]' file.json
jq -e '.token' file.json
```
## Safe Defaults
- Start with `jq .` to confirm valid JSON.
- Use `-r` for raw strings passed to other commands.
- Use `-e` where null/false must fail a pipeline step.
## Common Pitfalls
- Missing keys return `null` instead of raising an error.
- Quoted JSON strings are not suitable when raw output is required.
- Large one-liner filters become brittle without iterative checks.
## Output Interpretation
- Pretty JSON by default; use `-c` for compact JSON lines.
- `-e` returns non-zero on null/false, useful for guard conditions.
## Why It Matters For Agents
- jq is the standard adapter between JSON output and shell automation.
- It reduces custom parser code and keeps pipelines deterministic.
## Repo Conventions
- Prefer jq over ad-hoc JSON parsing scripts.
- Keep filters readable and scoped to required fields.
## Trigger Examples
-