Stdlib Code Reference

Shared utilities for JSON transformation, formatting, and I/O. Chain these in tasks via session files.

Usage

Declare the stdlib skill as a dependency, then use code bullets in task steps:

# In your skill
dependencies:
  - use: Data Utilities

# In your task
steps:
  - run: Filter JSON Array
    args: ["inputPath", "status", "eq", "active", "outputPath"]
  - run: Summarize JSON Array
    args: ["inputPath", "category", "10", "outputPath"]

---

IO Utilities

Code Bullet	Purpose	Key Args
Merge JSON Files	Merge multiple JSON arrays into one	inputPaths (comma-sep), outputPath
Split JSON Array	Split array into chunk files	inputPath, chunkSize, outputDir
Read JSON/YAML	Read JSON/YAML, extract nested path	inputPath, arrayPath, outputPath

---

Transform Utilities

Code Bullet	Purpose	Key Args
Summarize JSON Array	Compute top-N counts, date range	inputPath, groupByField, topN, outputPath
Filter JSON Array	Filter by field condition	inputPath, field, operator, value, outputPath
Extract Fields	Project specific fields	inputPath, fields (comma-sep), outputPath
Sort JSON Array	Sort by field	inputPath, field, order, outputPath
Group JSON Array	Group by field value	inputPath, field, outputPath
Deduplicate JSON Array	Remove duplicates	inputPath, field, keep, outputPath
Flatten Nested Arrays	Flatten nested arrays	inputPath, arrayField, outputPath

Filter operators: eq, neq, contains, gt, lt, gte, lte, exists

---

Format Utilities

Code Bullet	Purpose	Key Args
JSON to Markdown	JSON to markdown table/list	inputPath, format, fields, outputPath
JSON to CSV	JSON to CSV	inputPath, fields, outputPath
JSON to YAML	JSON to YAML	inputPath, outputPath

---

Text Utilities

Code Bullet	Purpose	Key Args
Truncate Text Fields	Truncate long strings	inputPath, fields, maxLength, outputPath
Search JSON Array	Search by text match	inputPath, query, fields, mode, outputPath
Apply String Template	Apply string template	inputPath, template, outputField, outputPath

Search modes: exact, contains, fuzzy

---

Time Utilities

Code Bullet	Purpose	Key Args
Filter by Date Range	Filter by date range	inputPath, dateField, start, end, outputPath
Group by Time Bucket	Group by time period	inputPath, dateField, bucket, outputPath

Relative dates: 7d (7 days), 1m (1 month), now

Bucket periods: hour, day, week, month, year