rtk-ai/rtk

feat: add yq rewrite rule and TOML filter for YAML query output compression

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#1,910 opened on May 16, 2026

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area:clienhancementgood first issuepriority:low

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Description

Problem

yq is the YAML counterpart to jq — it produces verbose YAML output that can be large when querying multi-document manifests, Kubernetes configs, or Helm values files. Currently rtk has no hook rewrite rule for yq, so bare yq commands are never compressed even though a simple truncation filter would save significant tokens.

Proposed Solution

Add a yq rewrite rule to src/discover/rules.rs and create src/filters/yq.toml following the same pattern as the existing jq.toml:

  • match_command = "^yq\\b"
  • strip_lines_matching = ["^\\s*$"] — remove blank lines
  • max_lines = 40
  • truncate_lines_at = 120

Related

  • Similar to #1364 (jq rewrite rule) — same compression pattern for structured query tools
  • jq.toml already exists as the template for this approach

Contributor guide

Research direction
Examine the existing jq.toml and rules.rs implementation, then replicate the pattern for yq.
Tech stack
rust
Domain
cli
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70