leon-report-builder

leon-report-builder is a skill for Claude Code from leonaero/leon_software_marketplace. It costs 174 tokens per session (1,975 once invoked), scanned A, original, Apache-2.0.

A guide for building column-based data reports in Leon, currently using flight data. It explains how to choose available columns and apply report filters.

In plain words
What is it for?
Use it to create flight reports or exports with selected fields; other data areas may be supported later.
Why use it?
It avoids confusing a structured report or export with a flight search, which is meant only to find flights.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the leon-mcp-skills plugin — 3 skills shipped together

Good fit Use it to create flight reports or exports with selected fields; other data areas may be supported later.

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Install with agentmods
npx agentmods add skills/leonaero/leon_software_marketplace/leon-report-builder
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add leonaero/leon_software_marketplace --skill leon-report-builder
Clone the repo
git clone --depth 1 https://github.com/leonaero/leon_software_marketplace

Made for: Claude Code.

Or install leon-mcp-skills, the plugin that ships this one along with the rest of its 3 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for leon-report-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/leonaero/leon_software_marketplace/leon-report-builder/github.svg)](https://agentmods.dev/skills/leonaero/leon_software_marketplace/leon-report-builder)
Your own site
<a href="https://agentmods.dev/skills/leonaero/leon_software_marketplace/leon-report-builder"><img src="https://agentmods.dev/badge/skills/leonaero/leon_software_marketplace/leon-report-builder/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for leon-report-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/leonaero/leon_software_marketplace/leon-report-builder"><img src="https://agentmods.dev/badge/skills/leonaero/leon_software_marketplace/leon-report-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 174 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,975 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00174 $0.01975
Opus 5 $0.00087 $0.00988
Sonnet 5 $0.00035 $0.00395
Haiku 4.5 $0.00017 $0.00198

Measured 12d ago against content hash c9d6f3faf1f0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

leon-report-builder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

leon-mcp-skills/skills/leon-report-builder/SKILL.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Leon Report Builder

Purpose

Report Wizard is organized by "scope" — a data domain, each exposed as a matching pair of tools: get-report-wizard-<scope>-columns-list (no input, returns the columns available for that scope) and get-report-wizard-<scope>-report (takes a columnList plus scope-specific filters, returns the rows). Flight is the only scope available right now. More scopes will be added over time using the same two-tool pattern — if a request is about a scope that doesn't have flight-scope tools obviously covering it (e.g. a crew-only or trip-only report), tool_search for get-report-wizard-<scope> before concluding it isn't supported yet.

This skill describes the general schema for using any Report Wizard scope, not just a fixed recipe for flight reports — the same workflow applies once new scopes appear. It does not replace leon-flight-search (which finds/identifies flights) — use this skill specifically when the goal is a structured, column-based report or export, typically meant to be delivered as a file.

Core principles

These apply regardless of which scope you're working with:

  1. Always ask for the desired output format before building anything — HTML, Excel (xlsx), or PDF — if the user hasn't already said. The format determines the downstream tool you hand the data to, so it's worth confirming up front rather than assuming and redoing the work.
  2. Request the minimum columns that satisfy the request. Don't pull every available column "just in case" — check the columns-list output, pick only what's needed to answer the request or populate the report, and add an identifier column (e.g. unique_id in flight scope) only if you'll need it for a follow-up lookup.
  3. Push filters into the tool call first. Every scope's report tool exposes some filters (for flight scope: aircraft, airports, crew, date range, cancellation). Apply as many of the user's constraints as the tool supports directly as parameters before calling it.
  4. Only filter in your own code when the tool has no equivalent parameter. If a constraint the user asked for isn't exposed as a filter, fetch the data using whatever filters are available (to keep the result as narrow as possible), then filter the returned rows yourself. Don't skip an available tool-side filter just because you'll also need code-side filtering for something else — combine both rather than doing everything in code.

Read the full file on GitHub · 131 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 131 lines · 174 tokens per session scan A c9d6f3faf1f0

Subscribe to this mod's changes

leon-report-builder is a skill published in the GitHub repository leonaero/leon_software_marketplace (2 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 174 tokens to every session and 1,975 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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