interpret-ir-spectrum SKILL.md skillA

interpret-ir-spectrum from pjt222/agent-almanac is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add pjt222/agent-almanac/interpret-ir-spectrum@v1.0

Pins v1.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
pjt222/agent-almanac
Path
i18n/caveman-lite/skills/interpret-ir-spectrum/SKILL.md
Versions recorded
4
Latest version
v1.0, committed Aug 17, 2026
First version recorded
Apr 19, 2026
Size
12,143 bytes
Repository stars
43
License
MIT

Systematically interpret infrared spectra to identify functional groups present in a sample. Covers diagnostic region analysis (4000-1500 cm-1), fingerprint region assessment (1500-400 cm-1), hydrogen bonding effects, and compilation of a functional group inventory with confidence levels.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Interpret IR Spectrum

Analyze infrared absorption spectra to identify functional groups, assess hydrogen bonding, and compile a comprehensive inventory of structural features present in the sample.

## When to Use

- Identifying functional groups in an unknown compound as a first screening step
- Confirming the presence or absence of specific functional groups (e.g., verifying a reaction converted an alcohol to a ketone)
- Monitoring reaction progress by tracking the appearance or disappearance of characteristic absorptions
- Distinguishing between similar compounds that differ in functional group content
- Complementing NMR and mass spectrometry data with vibrational information

## Inputs

- **Required**: IR spectrum data (absorption frequencies in cm-1 with intensities, either as %Transmittance or Absorbance plot)
- **Required**: Sample preparation method (KBr pellet, ATR, Nujol mull, thin film, solution cell)
- **Optional**: Molecular formula or expected compound class
- **Optional**: Known structural fragments from other spectroscopic data
- **Optional**: Instrument parameters (resolution, scan range, detector type)

## Procedure
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add pjt222/agent-almanac/interpret-ir-spectrum@sha256:9be46e75c96e64fb

The line at the top of this page pins the label v1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_s366nt3qmdkfn2yr.svg)](https://markdownregistry.com/a/art_s366nt3qmdkfn2yr)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Apr 19, 2026 and Aug 17, 2026, about one every 40 days.

versioncommittedcommitsizeaudit
v1.0 latest2026-08-17 a784899 12,143 BA view · diff
v1.02026-06-05 75ded7a 12,114 BA view · diff
v1.02026-04-26 f5b501b 12,240 BA view · diff
v1.02026-04-19 e334ebd 12,297 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (12143 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

pjt222/agent-almanac · 43 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_s366nt3qmdkfn2yr
GET https://markdownregistry.com/api/v1/resolve?ref=pjt222/agent-almanac/interpret-ir-spectrum
GET https://markdownregistry.com/api/v1/blob/9be46e75c96e64fb837343b669a94d52af1d3627f20f464c1eedc228d89822a3

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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