competition-submission-checker

competition-submission-checker is a skill for Codex from PracticalSwan/agent-skills. It costs 24 tokens per session (870 once invoked), scanned A, original, MIT.

A checker for competition predictions and notebook outputs. It validates whether a submission follows the required columns, row count, identifiers, prediction format, and evaluation metric.

In plain words
What is it for?
It is for checking NFL Draft prediction submissions, including the expected schema, AUC-compatible predictions, file contents, and competition instructions.
Why use it?
It helps catch submission errors such as missing or duplicate IDs, misaligned rows, invalid predictions, or accidental target leakage. Target leakage means using information that would not be available when making real predictions.

Skill for Codex

Written for Codex: reads ~/.codex or $CODEX_HOME. Also seen: mentions Claude Code; mentions AGENTS.md; mentions Codex.

Good fit It is for checking NFL Draft prediction submissions, including the expected schema, AUC-compatible predictions, file contents, and competition instructions.

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Install with agentmods
npx agentmods add skills/practicalswan/agent-skills/competition-submission-checker
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 PracticalSwan/agent-skills --skill competition-submission-checker
Clone the repo
git clone --depth 1 https://github.com/PracticalSwan/agent-skills

Made for: 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 competition-submission-checker

README.md
[![agentmods](https://agentmods.dev/badge/skills/practicalswan/agent-skills/competition-submission-checker/github.svg)](https://agentmods.dev/skills/practicalswan/agent-skills/competition-submission-checker)
Your own site
<a href="https://agentmods.dev/skills/practicalswan/agent-skills/competition-submission-checker"><img src="https://agentmods.dev/badge/skills/practicalswan/agent-skills/competition-submission-checker/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 competition-submission-checker

Your own site · 80×15
<a href="https://agentmods.dev/skills/practicalswan/agent-skills/competition-submission-checker"><img src="https://agentmods.dev/badge/skills/practicalswan/agent-skills/competition-submission-checker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 870 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 $0.00024 $0.00870
Opus 5 $0.00012 $0.00435
Sonnet 5 $0.00005 $0.00174
Haiku 4.5 $0.00002 $0.00087

Measured 3d ago against content hash 40e30e0d4e4a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

competition-submission-checker 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 3d 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.

competition-submission-checker/SKILL.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Competition Submission Checker

Use this skill for the folder 04. Competition (due Jun 12th 11AM UTC) or any NFL Draft prediction submission work.

Context Source

Load current competition facts from Serena memory first. If Serena is unavailable, use docs/memory-bank/progress.md, then verify against the current competition README or notebook before final advice.

Snapshot from project onboarding:

  • training target: Drafted
  • metric reported in audit: AUC
  • train.csv: 2781 rows x 16 columns
  • test.csv: 696 rows x 15 columns
  • sample_submission.csv: 696 rows x 2 columns
  • deadline needs verification because folder and README dates may differ

Workflow

  1. Read AGENTS.md and relevant Serena memory or docs/memory-bank/ fallback context.
  2. Verify the current README/notebook instructions for columns, metric, and deadline before final advice.
  3. Compare output columns to sample_submission.csv.
  4. Confirm row count, ID alignment, duplicate IDs, missing predictions, numeric prediction range, and file encoding.
  5. Check that target leakage is not used.
  6. If evaluating locally, use AUC-compatible probabilities, not hard labels unless the assignment explicitly asks for labels.

Safety

  • Do not submit files externally unless the user explicitly asks.
  • Do not use git, GitHub, or Google services.

Cross-Client Portability

This skill is written to stay usable across GitHub Copilot, Claude Code, and Codex.

  • GitHub Copilot: keep the folder in a Copilot-visible skill path or wrap the workflow in project instructions when folder discovery is unavailable.
  • Claude Code: keep the folder in a local skills directory or a compatible plugin source.
  • Codex: install or sync the folder into $CODEX_HOME/skills/competition-submission-checker and restart Codex after major changes.

MCP Availability And Fallback

Preferred MCP Server: None required

  • Fallback prompt: "Use the Competition Submission Checker skill without MCP. Rely on its local instructions, bundled resources, standard shell or editor tools, and direct verification. Show the evidence used before concluding."
  • Do not claim an MCP operation was used when the active host does not expose it.
  • Treat local files, tests, rendered outputs, logs, or screenshots as the fallback evidence path.

Read the full file on GitHub · 93 lines

Files

What ships with it

1 file 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. 3d ago Changed 40e30e0d4e4a
  2. 4d ago Changed b2d00013702e
  3. 7d ago Changed 71d386dde778
  4. 11d ago First seen · 93 lines · 24 tokens per session scan A d9f5a27b8ee4

Subscribe to this mod's changes

competition-submission-checker is a skill published in the GitHub repository PracticalSwan/agent-skills (14 stars, last pushed 3d ago), licensed MIT. It adds 24 tokens to every session and 870 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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