oasis-dev

oasis-dev is a skill for Claude Code from rube-de/cc-skills. It costs 42 tokens per session (1,940 once invoked), scanned B, original, MIT.

A development guide for building applications on the Oasis Network, a blockchain platform. It covers Sapphire confidential smart contracts, ROFL off-chain applications, the Oasis command-line tool, software libraries, and network operations.

In plain words
What is it for?
Use it to build or operate Sapphire contracts, ROFL applications, Oasis nodes, wallets, and projects using Rust, Go, TypeScript, or Python.
Why use it?
It reduces the need to piece together Oasis-specific concepts, commands, and development patterns from separate sources.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to build or operate Sapphire contracts, ROFL applications, Oasis nodes…

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Install with agentmods
npx agentmods add skills/rube-de/cc-skills/oasis-dev
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 rube-de/cc-skills --skill oasis-dev
Clone the repo
git clone --depth 1 https://github.com/rube-de/cc-skills

Made for: Claude Code.

Its marketplace also offers this one on its own, as the plugin oasis-dev/plugin install oasis-dev after adding the marketplace above.

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 oasis-dev

README.md
[![agentmods](https://agentmods.dev/badge/skills/rube-de/cc-skills/oasis-dev.svg)](https://agentmods.dev/skills/rube-de/cc-skills/oasis-dev)
Your own site
<a href="https://agentmods.dev/skills/rube-de/cc-skills/oasis-dev"><img src="https://agentmods.dev/badge/skills/rube-de/cc-skills/oasis-dev.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 1,940 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 $0.00042 $0.01940
Opus 5 $0.00021 $0.00970
Sonnet 5 $0.00008 $0.00388
Haiku 4.5 $0.00004 $0.00194

Measured 6d ago against content hash 9166c91a4ac2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

oasis-dev scanned grade B with 2 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 6d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo mv oasis /usr/local/bin/

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

wget https://github.com/oasisprotocol/cli/releases/latest/download/oasis_cli_linux_amd64.tar.gz
plugins/oasis-dev/skills/oasis-dev/SKILL.md · 208 lines

How it starts

The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Oasis Dev

Comprehensive assistance for building on the Oasis Network: Sapphire confidential EVM ParaTime, ROFL (Runtime OFfchain Logic) applications, Oasis CLI, SDK development, and ParaTime operations.

Triggers

Use this skill when the user mentions: "oasis", "sapphire", "sapphire paratime", "rofl", "oasis cli", "oasis sdk", "oasis network", "confidential evm", "oasis-sdk", "sapphire-paratime", "oasisprotocol", "oasis rofl", "paratime", "emerald", "cipher", "rose token", "oasis wallet", "sapphire contracts", "oasis node", "oasis core".

Also activate when the user is working in repos: oasisprotocol/sapphire-paratime, oasisprotocol/oasis-sdk, oasisprotocol/cli.

MCP Context

If MCP Context7 is available, use it to fetch latest docs:

  • Library ID: oasis_io_llms_txt at https://context7.com/llmstxt/oasis_io_llms_txt

Quick Start

Install CLI

# Download latest release from https://github.com/oasisprotocol/cli/releases
# Linux
wget https://github.com/oasisprotocol/cli/releases/latest/download/oasis_cli_linux_amd64.tar.gz
tar xf oasis_cli_linux_amd64.tar.gz
sudo mv oasis /usr/local/bin/

# macOS
brew install oasisprotocol/tools/oasis

Create a Wallet

# Ed25519 (Oasis native)
oasis wallet create my_wallet

# secp256k1 (EVM-compatible, for Sapphire/Emerald)
oasis wallet create my_wallet --algorithm secp256k1-bip44

Get Testnet Tokens

Visit https://faucet.testnet.oasis.io to get TEST tokens for Sapphire Testnet.

Deploy a Sapphire dApp (Hardhat)

npx hardhat init
npm install -D @oasisprotocol/sapphire-hardhat
// hardhat.config.js
import '@oasisprotocol/sapphire-hardhat';

module.exports = {
  solidity: "0.8.24",
  networks: {
    sapphire_testnet: {
      url: "https://testnet.sapphire.oasis.io",
      chainId: 0x5aff,
      accounts: [process.env.PRIVATE_KEY],
    },
    sapphire_mainnet: {
      url: "https://sapphire.oasis.io",
      chainId: 0x5afe,
      accounts: [process.env.PRIVATE_KEY],
    },
  },
};

Read the full file on GitHub · 208 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. 6d ago First seen · 208 lines · 42 tokens per session scan B 9166c91a4ac2

Subscribe to this mod's changes

oasis-dev is a skill published in the GitHub repository rube-de/cc-skills (10 stars, last pushed today), licensed MIT. It adds 42 tokens to every session and 1,940 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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