frictionless-tabular-validation-starter

frictionless-tabular-validation-starter is a skill for Claude Code, Codex from ma-compbio-lab/SkillFoundry. It costs 0 tokens per session (307 once invoked), scanned A, original, Apache-2.0.

A tool for checking small CSV or TSV tables against a Frictionless schema, a JSON description of the table's fields and rules. It produces a compact summary of the checks.

In plain words
What is it for?
It validates a table, reports its row count and field names, and lists normalized validation errors in structured output.
Why use it?
It finds malformed or unexpected table data before another system imports or transforms it.

Skill for Claude CodeCodex

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

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is ./slurm/envs/data-tools/bin/python skills/data-acquisition-and-dataset-handling/frictionless-tabular-validation-starter/scripts/run_frictionless_tabular_validat.

Good fit It validates a table, reports its row count and field names, 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/ma-compbio-lab/SkillFoundry
agentmods
npx agentmods add skills/ma-compbio-lab/skillfoundry/frictionless-tabular-validation-starter

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 frictionless-tabular-validation-starter

README.md
[![agentmods](https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/frictionless-tabular-validation-starter.svg)](https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/frictionless-tabular-validation-starter)
Your own site
<a href="https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/frictionless-tabular-validation-starter"><img src="https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/frictionless-tabular-validation-starter.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 307 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 $0.00000 $0.00307
Opus 5 $0.00000 $0.00153
Sonnet 5 $0.00000 $0.00061
Haiku 4.5 $0.00000 $0.00031

Measured 7d ago against content hash f9a8a5fee12c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

frictionless-tabular-validation-starter 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 2 executable files (scripts/run_frictionless_tabular_validation.py, tests/test_run_frictionless_tabular_validation.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.

skills/data-acquisition-and-dataset-handling/frictionless-tabular-validation-starter/SKILL.md · 30 lines

What it actually says

Frictionless Tabular Validation Starter

Use this skill to validate a small CSV or TSV table against a simple Frictionless schema and emit a compact machine-readable error summary.

What it does

  • loads a tabular input file plus a JSON schema descriptor
  • runs frictionless validation from the repo-managed data-tools prefix
  • reports row counts, field names, and normalized validation errors

When to use it

  • you need a verified starter for data-validation
  • you want a deterministic schema-validation smoke fixture for tabular scientific data
  • you need structured validation output before downstream ingestion or conversion

Example

./slurm/envs/data-tools/bin/python skills/data-acquisition-and-dataset-handling/frictionless-tabular-validation-starter/scripts/run_frictionless_tabular_validation.py \
  --input skills/data-acquisition-and-dataset-handling/frictionless-tabular-validation-starter/examples/toy_people_valid.csv \
  --schema skills/data-acquisition-and-dataset-handling/frictionless-tabular-validation-starter/examples/toy_people_schema.json \
  --out scratch/data-validation/frictionless_summary.json

Verification

  • Skill-local tests: python3 -m unittest discover -s skills/data-acquisition-and-dataset-handling/frictionless-tabular-validation-starter/tests -p 'test_*.py'
  • Expected valid summary: valid == true, row_count == 3, error_count == 0
Files

What ships with it

8 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. 7d ago First seen · 30 lines · 0 tokens per session scan A f9a8a5fee12c

Subscribe to this mod's changes

frictionless-tabular-validation-starter is a skill published in the GitHub repository ma-compbio-lab/SkillFoundry (38 stars, last pushed 4mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 307 tokens. 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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