use-modular-wallets
SkillBuild crypto wallets using Circle Modular Wallets SDK with passkey authentication, gasless transactions, and extensible module architecture. Use when: creating crypto wallets with passkey-based (WebAuthn) registration and login, sending gasless transactions using Circle Gas Station paymaster, batchi
Install
git clone https://github.com/circlefin/skills.git ~/.claude/skills/use-modular-walletsWhat is use-modular-wallets?
Build crypto wallets using Circle Modular Wallets SDK with passkey authentication, gasless transactions, and extensible module architecture. Use when: creating crypto wallets with passkey-based (WebAuthn) registration and login, sending gasless transactions using Circle Gas Station paymaster, batching multiple transactions into a single user operation, implementing passkey recovery using BIP-39 mnemonic phrases, building advanced onchain wallets with custom modules (multisig, subscriptions, session keys). Triggers on: MSCA, passkey authentication, WebAuthn, paymaster, Gas Station, ERC-4337, ERC-6900, toCircleSmartAccount, toModularTransport, sendUserOperation, 2D nonce, passkey recovery, EIP-1193 provider.
What this can do
Capabilities declared in this component's own frontmatter — not inferred.
Inherit all session tools
Declares no tool restrictions — inherits every session tool
~179 tokens of context used while enabled, before you invoke anything
Documentation
README · ~7 min readOverview
Modular Wallets are flexible smart contract accounts (MSCAs) that extend functionality through installable modules. Built on ERC-4337 (account abstraction) and ERC-6900 (modular smart contract framework), they support passkey authentication, gasless transactions, batch operations, and custom logic modules (multisig, subscriptions, session keys). MSCAs are lazily deployed -- gas fees for account creation are deferred until the first outbound transaction.
Prerequisites / Setup
Installation
npm install @circle-fin/modular-wallets-core viem
For passkey recovery, also install:
npm install bip39
Reviews
Log in to leave a review.
No reviews yet — be the first.
Explore related
Other things in this space — across every part of the ecosystem, not just skills.
Skillssimilar to this one
All skills →ECC
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
235.3K stars
plugin-structure
This skill should be used when the user asks to "create a plugin", "scaffold a plugin", "understand plugin structure", "organize plugin components", "set up plugin.json", "use ${CLAUDE_PLUGIN_ROOT}", "add commands/agents/skills/hooks", "configure auto-discovery", or needs guidance on plugin director
32.8K stars
claude-md-improver
Audit and improve CLAUDE.md files in repositories. Use when user asks to check, audit, update, improve, or fix CLAUDE.md files. Scans for all CLAUDE.md files, evaluates quality against templates, outputs quality report, then makes targeted updates. Also use when the user mentions "CLAUDE.md maintena
32.8K stars
Subagents
All subagents →ECC
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
235.3K stars
architecture-critic
Reviews proposed target architectures and transformed code against modern best practice. Adversarial — looks for over-engineering, missed requirements, and simpler alternatives.
32.8K stars
code-architect
Designs feature architectures by analyzing existing codebase patterns and conventions, then providing comprehensive implementation blueprints with specific files to create/modify, component designs, data flows, and build sequences
32.8K stars
MCP Servers
All mcp servers →Commands
All commands →feature-dev
Guided feature development with codebase understanding and architecture focus
32.8K stars
modernize-harden
Security vulnerability scan with a reviewable remediation patch — OWASP, CWE, CVE, secrets, injection
32.8K stars
modernize-transform
Transform one legacy module to the target stack — idiomatic rewrite with behavior-equivalence tests
32.8K stars
Plugins
All plugins →claude-security
Deep vulnerability scanning of your own code, run entirely inside your Claude Code session at a chosen effort tier, with every finding challenged before it is reported and the verification tally computed in code. Turns surviving findings into targeted patches, each verified by a panel of agents, tha
32.9K stars
claude-md-management
Tools to maintain and improve CLAUDE.md files - audit quality, capture session learnings, and keep project memory current.
32.9K stars
math-olympiad
Solve competition math (IMO, Putnam, USAMO) with adversarial verification that catches what self-verification misses. Fresh-context verifiers attack proofs with specific failure patterns. Calibrated abstention over bluffing.
32.9K stars