Harvest Structured Agent Skill

by vibeeval

Structured data extraction - tables, pricing, products, API endpoints with schema

566 tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

521

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/vibeeval/vibecosystem --skill harvest-structured

What it tells the agent to use

found in the instruction text

WebFetch fetches pages from the network

The instruction itself

10 sections, as written by the author

Harvest Structured

Extract structured data from web pages using user-defined schemas. Turns messy HTML into clean JSON/CSV - pricing tables, product listings, API endpoint docs, comparison matrices.

Usage

/scrape <url> --schema "<field descriptions>"

Examples

# Extract pricing data
/scrape https://example.com/pricing --schema "plan_name, price, features[], cta_text"

# Extract product listings
/scrape https://store.example.com/products --schema "name, price, rating, reviews_count, image_url"

# Extract API endpoints
/scrape https://docs.api.com/reference --schema "method, path, description, parameters[], response_code"

Schema Definition

Define fields as comma-separated names. Use [] for arrays:

name            → Single text value
price           → Single value (auto-detects currency)
features[]      → Array of items
description     → Long text
url             → Auto-detects links
image_url       → Auto-detects image sources

How It Works

Fetch page content
Parse schema definition
Use CSS selectors or LLM extraction to match fields
Validate extracted data against schema
Output as JSON (default) or CSV

Output Format

JSON (default)

[
  {
    "plan_name": "Pro",
    "price": "$29/mo",
    "features": ["Unlimited projects", "Priority support", "API access"],
    "source_url": "https://example.com/pricing"
  }
]

CSV

plan_name,price,features,source_url
Pro,"$29/mo","Unlimited projects; Priority support; API access",https://example.com/pricing

Integration

growth: Competitor pricing extraction
migrator: Changelog/breaking changes extraction
tech-radar: Feature comparison across tools
data-analyst: Structured data for analysis

Rules

Only extract publicly visible data
Respect rate limits (1 req/sec)
Validate schema before extraction
Report confidence per field (high/medium/low)
Output includes source URL for every record

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How to use it

Copy the folder

Take vibeeval/harvest-structured from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.