student-database

student-database is a skill for Claude Code, Codex from MassLab-SII/open-agent-skills. It costs 27 tokens per session (1,590 once invoked), scanned A, original, Apache-2.0.

A set of tools for processing student records stored in folders and text files. It calculates grades, finds duplicate names, and filters students by recommendation grade or TOEFL score.

In plain words
What is it for?
Use it to turn subject scores into letter grades, find duplicate student names, and create lists based on recommendation grades or TOEFL score thresholds.
Why use it?
It removes repetitive checking and calculation from student database work. It also produces summary files that make the results easier to review.

Skill for Claude CodeCodex

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

Good fit Use it to turn subject scores into letter grades, find duplicate student names, and create lists based on recommendation grades or TOEFL score thresholds.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/masslab-sii/open-agent-skills/student_database
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 MassLab-SII/open-agent-skills --skill student_database
Clone the repo
git clone --depth 1 https://github.com/MassLab-SII/open-agent-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 student-database

README.md
[![agentmods](https://agentmods.dev/badge/skills/masslab-sii/open-agent-skills/student_database/github.svg)](https://agentmods.dev/skills/masslab-sii/open-agent-skills/student_database)
Your own site
<a href="https://agentmods.dev/skills/masslab-sii/open-agent-skills/student_database"><img src="https://agentmods.dev/badge/skills/masslab-sii/open-agent-skills/student_database/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 student-database

Your own site · 80×15
<a href="https://agentmods.dev/skills/masslab-sii/open-agent-skills/student_database"><img src="https://agentmods.dev/badge/skills/masslab-sii/open-agent-skills/student_database.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,590 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 $0.00027 $0.01590
Opus 5 $0.00014 $0.00795
Sonnet 5 $0.00005 $0.00318
Haiku 4.5 $0.00003 $0.00159

Measured 9d ago against content hash 22ffc589d219, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

student-database 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 9d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/duplicate_name.py, scripts/filter_by_recommendation.py, scripts/filter_by_toefl.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.

portable-skills/student_database/SKILL.md · 302 lines

How it starts

The opening of the file, as written. The whole thing — 302 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Student Database Skill

This skill provides tools for processing student database:

  1. Grade calculation: Calculate student grades from scores
  2. Duplicate name finder: Find duplicate names in database
  3. Filter by recommendation: Find students by recommendation grade
  4. Filter by TOEFL: Find students by TOEFL score threshold

Important Notes

  • Do not use other bash commands: Do not attempt to use general bash commands or shell operations like cat, ls.
  • Use relative paths: Use paths relative to the working directory (e.g., ./student_database).

I. Skills

1. Grade-Based Score

Calculate student grades from student database and generate output files.

Features
  • Read all basic_info.txt files from student folders
  • Extract chinese, math, english scores
  • Calculate grades: A(90+), B(80-89), C(70-79), D(60-69), F(<60)
  • Generate student_grades.csv and grade_summary.txt
Example
python gradebased_score.py ./student_database

# Specify output directory
python gradebased_score.py ./student_database --output-dir ./output
Output Files
  1. student_grades.csv: student_id, name, chinese_score, chinese_grade, math_score, math_grade, english_score, english_grade
  2. grade_summary.txt: Total students, A/B/C/D/F counts per subject, pass/fail counts

2. Duplicate Name Finder

Find duplicate names in student database.

Features
  • Scan all student folders
  • Extract names from basic_info.txt
  • Identify names that appear more than once
  • Generate namesake.txt
Example
python duplicate_name.py ./student_database

# Specify output file
python duplicate_name.py ./student_database --output ./namesake.txt
Output Format
name: xxx
count: xxx
ids: xxx, xxx, ...

name: yyy
count: yyy
ids: yyy, yyy, ...

3. Filter by Recommendation Grade

Find students with specified grade(s) from recommendation_letter.txt files.

Features
  • Filter by single grade (S, A, B, C, D, F) or multiple grades (e.g., SA for S or A)
  • Returns list of matching student folder names

Read the full file on GitHub · 302 lines

Files

What ships with it

4 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. 9d ago First seen · 302 lines · 27 tokens per session scan A 22ffc589d219

Subscribe to this mod's changes

student-database is a skill published in the GitHub repository MassLab-SII/open-agent-skills (133 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 27 tokens to every session and 1,590 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.

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