skill-creator

skill-creator is a skill for Claude Code, Codex from XAIHT/Tlamatini. It costs 23 tokens per session (1,039 once invoked), scanned A, original, MIT.

A toolkit for creating, editing, checking, and packaging new Tlamatini skills, which are instruction packages that teach an agent how to perform a task.

In plain words
What is it for?
Use it to scaffold a skill directory, write its SKILL.md file, and run the provided linter.
Why use it?
It helps avoid malformed skill packages and catches setup errors before the skill is used.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python Tlamatini/agent/skills_pkg/_meta/lint.py.

Good fit Use it to scaffold a skill directory, write its SKILL.md file, and…

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Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/XAIHT/Tlamatini
agentmods
npx agentmods add skills/xaiht/tlamatini/skill_creator

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 skill-creator

README.md
[![agentmods](https://agentmods.dev/badge/skills/xaiht/tlamatini/skill_creator.svg)](https://agentmods.dev/skills/xaiht/tlamatini/skill_creator)
Your own site
<a href="https://agentmods.dev/skills/xaiht/tlamatini/skill_creator"><img src="https://agentmods.dev/badge/skills/xaiht/tlamatini/skill_creator.svg" alt="Measured on agentmods" height="20"></a>
Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,039 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 $0.00023 $0.01039
Opus 5 $0.00012 $0.00519
Sonnet 5 $0.00005 $0.00208
Haiku 4.5 $0.00002 $0.00104

Measured 7d ago against content hash 9be01120b6d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

skill-creator 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 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/quick_validate.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Tlamatini/agent/skills_pkg/skill_creator/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Creator

Use this skill to bootstrap a new skill correctly the first time.

Procedure

  1. Validate the inputs:

    • skill_name must be kebab-case, all lowercase, ASCII letters/numbers/dashes only.
    • runtime must be in-process or acpx. If acpx, acpx_agent is required.
  2. Create the directory Tlamatini/agent/skills_pkg/${input.skill_name}/.

  3. Author SKILL.md with this minimal scaffold:

---
name: ${input.skill_name}
description: ${input.description}
metadata:
  tlamatini:
    runtime: ${input.runtime}
    acpx_agent: ${input.acpx_agent}     # only if runtime=acpx
    requires_tools: []
    requires_mcps:  []
    budget:
      max_iterations: 8
      max_seconds: 120
      max_tokens: 16000
    permissions:
      filesystem: { read: [], write: [] }
      shell:     []
      network:   deny
      db:        deny
    inputs:  []
    outputs: []
    triggers:
      keywords:   []
      file_globs: []
---

# ${input.skill_name}

Describe the skill. Be concise. Body must stay under 8 KiB.
  1. Run the linter:

    python Tlamatini/agent/skills_pkg/_meta/lint.py
    
  2. Return { "skill_dir": "<path>", "lint_status": "<linter stdout last line>" }.

Constraints

  • Do NOT write outside Tlamatini/agent/skills_pkg/<skill_name>/.
  • Do NOT add a skill whose name collides with an existing one — the registry rejects duplicates. The lint step catches this.
  • Body length cap is 8 KiB. Long playbooks belong in references/<file>.md inside the skill directory and should be referenced from the body, not inlined.
  • Skills with runtime: acpx MUST set acpx_agent to a registered agent_id (see list_acp_agents).
  • Scratch/output under <app>/Temp (2026-06-02 policy): if the skill writes any temporary or intermediate file, target <app>/Temp — read the TLAMATINI_TEMP env var, or (in-process) resolve via agent/path_guard.py::resolve_temp_path — never C:\Temp / %TEMP%, and declare that path in permissions.filesystem.write. Files the user keeps (deliverables) go to their chosen path; only throwaway artefacts go to Temp. See prompt.pmt Rule 15.

Read the full file on GitHub · 114 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. 7d ago First seen · 114 lines · 23 tokens per session scan A 9be01120b6d0

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository XAIHT/Tlamatini (16 stars, last pushed today), licensed MIT. It adds 23 tokens to every session and 1,039 once invoked, about $0.0001 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 2026-08-30.