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hdmf-schema-builder

hdmf-schema-builder is a skill for Claude Code, Codex from AI-ModCon/BaseData_Skills. It costs 22 tokens per session (4,922 once invoked), scanned A, original, no licence file.

A skill for building HDMF schemas, which are structured definitions for organising HDF5 scientific data files. HDF5 is a file format commonly used for large, structured datasets.

In plain words
What is it for?
Use it to define the structure and organisation of HDF5 files used for machine-learning datasets or shared scientific data.
Why use it?
It helps turn data requirements into a consistent schema that can support AI training and data sharing.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 5repo 1mo ago A scan 22 tokens no licence

Good fit Use it to define the structure and organisation of HDF5 files used for machine-learning datasets or shared scientific data.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ai-modcon/basedata_skills/hdmf-schema-builder
View source ↗ AI-ModCon/BaseData_Skills
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 AI-ModCon/BaseData_Skills --skill hdmf-schema-builder
Clone the repo
git clone --depth 1 https://github.com/AI-ModCon/BaseData_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 hdmf-schema-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/ai-modcon/basedata_skills/hdmf-schema-builder/github.svg)](https://agentmods.dev/skills/ai-modcon/basedata_skills/hdmf-schema-builder)
Your own site
<a href="https://agentmods.dev/skills/ai-modcon/basedata_skills/hdmf-schema-builder"><img src="https://agentmods.dev/badge/skills/ai-modcon/basedata_skills/hdmf-schema-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 hdmf-schema-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/ai-modcon/basedata_skills/hdmf-schema-builder"><img src="https://agentmods.dev/badge/skills/ai-modcon/basedata_skills/hdmf-schema-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,922 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 unknown 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 $0.00022 $0.04922
Opus 5.5 $0.00009 $0.01969
Sonnet 5.5 $0.00004 $0.00984
Haiku 4.5 $0.00002 $0.00492

Measured 2mo ago against content hash 260e59c92f65, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

hdmf-schema-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 2mo 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.

skills/hdmf-schema-builder/SKILL.md · 703 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

5 files 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. 2mo ago First seen · 703 lines · 22 tokens per session scan A 260e59c92f65

Subscribe to this mod's changes

hdmf-schema-builder is a skill published in the GitHub repository AI-ModCon/BaseData_Skills (5 stars, last pushed 1mo ago), with no licence file. It adds 22 tokens to every session and 4,922 once invoked, about $0.0001 per session on Opus 5.5. 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.

DatabasesScientific
Related

hdmf-schema-builder compared with skills from other repositories

hdmf-schema-builder next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
hdmf-schema-builderAI-ModCon/BaseData_SkillsSkill51mo agononeA22Claude Code, Codex
tiledbvcfK-Dense-AI/scientific-agent-skillsSkill56k4d agoMITA62Claude Code, Codex
lamindbK-Dense-AI/scientific-agent-skillsSkill56k4d agoMITA58Claude Code, Codex
defining-cohort-phenotypesmaziyarpanahi/openmedSkill5.8kyesterdayApache-2.0A191Claude Code
benchling-integrationsynthetic-sciences/openscienceSkill4.3k2d agoApache-2.0A44Claude Code, Codex
chembl-databasegoogle-deepmind/science-skillsSkill3.4k14d agoApache-2.0A53Claude Code, Codex
nvalchemi-data-storageNVIDIA/nvalchemi-toolkitSkill204yesterdayApache-2.0A90Claude Code