Skip to content
Agentmart
Submit a tool
This entry duplicates agent-tool-builder, which is the one we list in search.

agent-tool-builder

Tools are how AI agents interact with the world.

Skill by ivalenzuela

IndexedLicense unknown
Write a review

Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/ivalenzuela-agent-tool-builder

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Get the weekly diff

The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.

We use your email only for this newsletter. Privacy

About

Tools are how AI agents interact with the world. A well-designed tool is the difference between an agent that works and one that hallucinates, fails silently, or costs 10x more tokens than necessary. This skill covers tool design from schema to error handling.

Use cases: design, agent-building

Reviews

Write a review

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions: not checked yet.

What's inside

Skill name
agent-tool-builder
Description
Tools are how AI agents interact with the world. A well-designed tool is the difference between an agent that works and one that hallucinates, fails silently, or costs 10x more tokens than necessary. This skill covers tool design from schema to error handling.
License
unknown
Instructions
705 lines in SKILL.md · view on GitHub

Before installing

  • Instructions call the network

Agent Skills spec issues

  • body: 705 lines (spec recommends under 500)

Files (1)

  • SKILL.md

The license isn't open source, so the instructions aren't shown here. Read SKILL.md on GitHub

More from ivalenzuela/antigravity-marketing-design-skills

Signals

Stars
0
Forks
0
Open issues
0
Last commit (this folder)
Jul 31, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
License unknown
Repository
github.com/ivalenzuela/antigravity-marketing-design-skills
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

Same skill elsewhere

Copies of this SKILL.md published by others; search shows only one of them.

More from ivalenzuela

Cite this page

agent-tool-builder skill. Agent Mart. https://agentmart.dev/skills/ivalenzuela-agent-tool-builder (last updated 2026-10-24)