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.
npx agentmods add skills/0x-j/sui-stack-claude-code-plugin/seal-encryptionnpx skills add 0x-j/sui-stack-claude-code-plugin --skill seal-encryptiongit clone --depth 1 https://github.com/0x-j/sui-stack-claude-code-pluginWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00083 | $0.05575 |
| Opus 5 | $0.00042 | $0.02788 |
| Sonnet 5 | $0.00017 | $0.01115 |
| Haiku 4.5 | $0.00008 | $0.00558 |
Grade A, and why
Seal Secrets Management 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.
How it starts
The opening of the file, as written. The whole thing — 878 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Seal Secrets Management
Provides expert guidance for using Seal, a decentralized secrets management (DSM) service that relies on access control policies defined and validated on Sui. Application developers and users can use Seal to secure sensitive data at rest on decentralized storage like Walrus, or on any other onchain/offchain storage.
Overview
Seal is a decentralized secrets management service that combines Sui blockchain's access control capabilities with encryption to protect sensitive data across any storage medium. Unlike traditional encryption libraries, Seal provides policy-based access management enforced by smart contracts on Sui.
Key features:
- Sui-based access control - Define and validate access policies on Sui blockchain
- Storage agnostic - Works with Walrus, IPFS, S3, onchain, or any storage
- Policy enforcement - Smart contract-enforced access rules
- Multiple encryption modes - Symmetric and asymmetric encryption
- Decentralized key management - Distributed key handling without central authority
- Streaming support - Encrypt large files efficiently
- Browser compatible - Works in web applications
Use cases:
- Secure sensitive data on Walrus or other decentralized storage
- Encrypted onchain data with offchain access control
- Private NFT metadata and assets
- Confidential document sharing with policy-based access
- Multi-party data access with Sui smart contract governance
Official documentation: https://seal-docs.wal.app/ and https://sdk.mystenlabs.com/seal
Note: Seal is a DSM service, not just an encryption library. Access policies are defined on Sui, providing decentralized, trustless access management.
Installation
Install Seal SDK
# Using npm
npm install @mysten/seal
# Using yarn
yarn add @mysten/seal
# Using pnpm
pnpm add @mysten/seal
Required Dependencies
# Seal typically requires Walrus SDK as well
npm install @mysten/walrus @mysten/sui
Encryption Basics
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.
- 3d ago First seen · 878 lines · 83 tokens per session scan A b343fa511951
Seal Secrets Management is a skill published in the GitHub repository 0x-j/sui-stack-claude-code-plugin (10 stars, last pushed 6mo ago), licensed MIT. It adds 83 tokens to every session and 5,575 once invoked, about $0.0004 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.
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