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mat-xrd-phase-analysis

mat-xrd-phase-analysis is a skill for Claude Code, Codex from learningmatter-mit/AtomisticSkills. It costs 22 tokens per session (1,791 once invoked), scanned A, original, MIT.

Phase identification from experimental XRD using DARA's tree search (Ray-based).

Skill for Claude CodeCodex

not rated 158 yesterday A scan 22 tokens MIT
View the source file learningmatter-mit/AtomisticSkills
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.

agentmods
npx agentmods add skills/learningmatter-mit/atomisticskills/mat-xrd-phase-analysis
Any agent
npx skills add learningmatter-mit/AtomisticSkills --skill mat-xrd-phase-analysis
Clone the repo
git clone --depth 1 https://github.com/learningmatter-mit/AtomisticSkills

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 mat-xrd-phase-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/learningmatter-mit/atomisticskills/mat-xrd-phase-analysis.svg)](https://agentmods.dev/skills/learningmatter-mit/atomisticskills/mat-xrd-phase-analysis)
Your own site
<a href="https://agentmods.dev/skills/learningmatter-mit/atomisticskills/mat-xrd-phase-analysis"><img src="https://agentmods.dev/badge/skills/learningmatter-mit/atomisticskills/mat-xrd-phase-analysis.svg" alt="Measured on agentmods" 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 1,791 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00022 $0.01791
Opus 5 $0.00011 $0.00896
Sonnet 5 $0.00004 $0.00358
Haiku 4.5 $0.00002 $0.00179

Measured today against content hash fff42d158765, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mat-xrd-phase-analysis 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 today.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/dara_utils.py, scripts/phase_search.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.

.agents/skills/mat-xrd-phase-analysis/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Goal

Identify crystalline phases present in an XRD pattern by using DARA's phase search (parallelized tree search with BGMN), following the DARA tutorial (Tutorial 2: Phase analysis with tree search).

This skill:

  • Fetches candidate CIFs for a given chemical system (e.g. Ge-O-Zn) using either the COD or ICSD database. Any directory of CIFs works as the candidate set -- including structures pulled from Materials Project -- via --cif_dir or the phases argument of search_phases.
  • Runs DARA's search_phases to search mixtures of phases.
  • Saves plots and a human-readable report alongside the pattern.

Database Sources

DARA searches for structures in experimental databases. It supports:

  1. CODDatabase (default, --database cod): Open-access. DARA will attempt to download CIFs from crystallography.net. If the website is offline or unreachable, DARA will automatically look for a local copy at ~/COD_2024 (or the path defined in ~/.dara.yaml).
  2. ICSDDatabase (--database icsd): Commercial database. Requires a local copy, default path ~/ICSD_2024 (or configured in ~/.dara.yaml). Online download is not supported for ICSD.

Requirements

  • Dependencies: dara-xrd (and its Ray/BGMN stack). The pip distribution is named dara-xrd but the import module is dara:

    from dara import search_phases

    Check for the library itself (python -c "import dara"), not for an environment name -- import dara_xrd will always fail.

  • Conda environment: xrd-agent (see conda-envs/xrd-agent) is the environment this repo provisions, but it is one deployment option, not a requirement. Where dara-xrd is already installed on the default interpreter, call search_phases directly; the xrd-agent env and scripts/phase_search.py are conveniences.

  • BGMN: DARA will prompt to download or use a local BGMN installation.

  • For clusters where only some nodes have internet:

    • You can optionally use a two-step workflow (download CIFs on a node with internet, run Ray search elsewhere).

Read the full file on GitHub · 158 lines

Files

What ships with it

6 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. today First seen · 158 lines · 22 tokens per session scan A fff42d158765

Subscribe to this mod's changes

mat-xrd-phase-analysis is a skill published in the GitHub repository learningmatter-mit/AtomisticSkills (158 stars, last pushed yesterday), licensed MIT. It adds 22 tokens to every session and 1,791 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 2026-09-03.

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