leonardo-image

leonardo-image is a skill for Claude Code, Codex from calesthio/generative-media-skills. It costs 118 tokens per session (10,438 once invoked), scanned A, original, MIT.

A workflow for creating and editing still images through Leonardo.Ai's official Production API.

In plain words
What is it for?
It is for text-to-image and image-to-image work, guided or masked edits, inpainting, upscaling, background removal, and custom models.
Why use it?
It helps you separate Leonardo's different model and endpoint types and plan the image job, source references, rights, runtime, and spending before making paid calls.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It is for text-to-image and image-to-image work, guided or masked edits, inpainting, upscaling, background removal, and custom models.

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Install with agentmods
npx agentmods add skills/calesthio/generative-media-skills/leonardo-image
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 calesthio/generative-media-skills --skill leonardo-image
Clone the repo
git clone --depth 1 https://github.com/calesthio/generative-media-skills

Made for: Claude Code, Codex.

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 leonardo-image

README.md
[![agentmods](https://agentmods.dev/badge/skills/calesthio/generative-media-skills/leonardo-image/github.svg)](https://agentmods.dev/skills/calesthio/generative-media-skills/leonardo-image)
Your own site
<a href="https://agentmods.dev/skills/calesthio/generative-media-skills/leonardo-image"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/leonardo-image/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 leonardo-image

Your own site · 80×15
<a href="https://agentmods.dev/skills/calesthio/generative-media-skills/leonardo-image"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/leonardo-image.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 118 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 10,438 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Tool Misuse · line 124
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • high Tool Misuse · line 603
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • high Tool Misuse · line 603
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
How audits are shown
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 $0.00118 $0.10438
Opus 5 $0.00059 $0.05219
Sonnet 5 $0.00024 $0.02088
Haiku 4.5 $0.00012 $0.01044

Measured 9d ago against content hash 50eefa89f869, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

leonardo-image scanned grade A with 2 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 9d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

from urllib.parse import urlparse

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

subprocess.run([*scanner_command, tmp], check=True, timeout=120,
skills/providers/image-generation/leonardo-image/SKILL.md · 651 lines

How it starts

The opening of the file, as written. The whole thing — 651 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Leonardo image production

Operate Leonardo.Ai's official Production API for still images. Keep native Leonardo models, partner models hosted by Leonardo, realtime-canvas endpoints, and legacy endpoints visibly separate: they have different routes and schemas.

Start with a production brief

Collect or propose:

  • Deliverable: subject, setting, style, composition, aspect/dimensions, output count, and acceptance criteria.
  • Operation: text-to-image, image-to-image, reference guidance, masked edit, upscale, background removal, or custom training.
  • Source media: local paths or Leonardo image IDs, whether each is uploaded or generated, and the intended role of each reference.
  • Rights: ownership/licence, likeness consent, privacy classification, and whether public visibility is allowed.
  • Runtime: direct REST, official Python SDK, or official TypeScript SDK.
  • Spend: calculator estimate, hard budget, concurrency ceiling, and whether auto-top-up is disabled.

Default to a one-image private preview at a conservative dimension. Before any paid call, state the exact route, model/model ID, settings, sample count, calculator estimate, and why. Wait for explicit approval. Never silently change model, visibility, reference method, quality mode, or sample-to-batch scope.

Evidence snapshot and boundaries

The contracts below were checked against first-party Leonardo documentation, the official SDK repositories, changelog, policies, and legal pages on 2026-07-10. Recheck them before production: Leonardo is actively moving API pricing to PAYG, adds model-specific v2 contracts, and publishes occasional conflicting examples.

This skill covers:

  • Native Leonardo still models on POST /api/rest/v1/generations.
  • Still-image references, uploaded inputs, image-to-image, current controlnets, and LCM inpainting.
  • Still-image upscalers and custom image Elements/models.

It excludes video endpoints, 3D generation, Blueprints as a general orchestration system, the Leonardo web editor itself, MCP proxies, and unofficial SDKs. Some partner image models are available inside Leonardo's API; label them as partner models and use their own v2 guide rather than treating them as Lucid/Phoenix variants.

Read the full file on GitHub · 651 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 651 lines · 118 tokens per session scan A 50eefa89f869

Subscribe to this mod's changes

leonardo-image is a skill published in the GitHub repository calesthio/generative-media-skills (170 stars, last pushed 2mo ago), licensed MIT. It adds 118 tokens to every session and 10,438 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 2 findings (makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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