coding_contests

coding_contests is a skill for Claude Code, Codex from nikhilreddy3888/public-api-toolkit. It costs 42 tokens per session (187 once invoked), scanned A, original, MIT.

A tool for finding upcoming and ongoing competitive programming contests on Codeforces, LeetCode, and HackerRank.

In plain words
What is it for?
Use it to find contests across all supported platforms or to list contests from one of them.
Why use it?
It removes the need to check each contest website separately or track dates manually.

Skill for Claude CodeCodex

Part of the public-api-skills plugin — 43 skills shipped together

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/nikhilreddy3888/public-api-toolkit/coding_contests
Any agent
npx skills add nikhilreddy3888/public-api-toolkit --skill coding_contests
Clone the repo
git clone --depth 1 https://github.com/nikhilreddy3888/public-api-toolkit

Made for: Claude Code, Codex.

Or install public-api-skills, the plugin that ships this one along with the rest of its 43 skills.

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 coding_contests

README.md
[![agentmods](https://agentmods.dev/badge/skills/nikhilreddy3888/public-api-toolkit/coding_contests.svg)](https://agentmods.dev/skills/nikhilreddy3888/public-api-toolkit/coding_contests)
Your own site
<a href="https://agentmods.dev/skills/nikhilreddy3888/public-api-toolkit/coding_contests"><img src="https://agentmods.dev/badge/skills/nikhilreddy3888/public-api-toolkit/coding_contests.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 187 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00042 $0.00187
Opus 5 $0.00021 $0.00093
Sonnet 5 $0.00008 $0.00037
Haiku 4.5 $0.00004 $0.00019

Measured 4d ago against content hash 831e2bec340a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

coding_contests 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 4d 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.

skills/coding_contests/SKILL.md · 30 lines

What it actually says

Competitive coding contests information from Kontests API. Free. No key.

APIs

  • All Contests: https://kontests.net/api/v1/all
  • Codeforces: https://kontests.net/api/v1/codeforces
  • LeetCode: https://kontests.net/api/v1/leet_code
  • HackerRank: https://kontests.net/api/v1/hacker_rank

Example

{"platform": "all"}

Returns: list of all upcoming/ongoing coding contests with start/end times and links.

{"platform": "leet_code"}

Returns: upcoming LeetCode contests.

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. 4d ago First seen · 30 lines · 42 tokens per session scan A 831e2bec340a

Subscribe to this mod's changes

coding_contests is a skill published in the GitHub repository nikhilreddy3888/public-api-toolkit (2 stars, last pushed 4mo ago), licensed MIT. It adds 42 tokens to every session and 187 once invoked, about $0.0002 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 2026-08-31.