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circle

circle is a plugin for Claude Code from circlefin/skills. Its manifest loads nothing; the 19 skills, 1 MCP server it bundles cost 2,733 tokens per session together, scanned A, original, Apache-2.0.

A plugin for building applications that use USDC, a digital dollar issued on blockchain networks, including payments, transfers, wallets, and smart contracts. It includes development guidance and access to Circle documentation.

In plain words
What is it for?
Use it when building USDC payments, cross-chain transfers, wallets, or smart contracts with Circle-related tools.
Why use it?
It helps developers work through the implementation details of stablecoin features and Circle services in one development setup.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

not rated 155repo +1 changed 2d ago A scan tokens not measured original Apache-2.0

Good fit Use it when building USDC payments, cross-chain transfers, wallets, or smart contracts with Circle-related tools.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add circlefin/skills
/plugin install circle
View source ↗ circlefin/skills
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.

Clone the repo
git clone --depth 1 https://github.com/circlefin/skills

Made for: Claude Code.

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 circle

README.md
[![agentmods](https://agentmods.dev/badge/plugins/circlefin/skills/circle/github.svg)](https://agentmods.dev/plugins/circlefin/skills/circle)
Your own site
<a href="https://agentmods.dev/plugins/circlefin/skills/circle"><img src="https://agentmods.dev/badge/plugins/circlefin/skills/circle/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 circle

Your own site · 80×15
<a href="https://agentmods.dev/plugins/circlefin/skills/circle"><img src="https://agentmods.dev/badge/plugins/circlefin/skills/circle.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 19 skills, 1 MCP server cost 2,733 tokens a session between them.
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.
Security

Grade A, and why

circle 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 2d 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.

plugins/circle/.claude-plugin/plugin.json · 11 lines

What it actually says

{
	"name": "circle",
	"version": "1.8.1",
	"description": "Ship stablecoin apps faster. Best-practice skills for USDC payments, cross-chain transfers, wallets, and smart contracts — plus Circle's MCP server for real-time SDK and documentation guidance.",
	"author": {
		"name": "Circle Technology Services"
	},
	"keywords": ["usdc", "stablecoin", "circle", "cctp", "wallets", "web3", "payments"],
	"license": "Apache-2.0"
}
Contents

What it installs

The manifest is a name and a version. 19 skills, 1 MCP server travel with it, and installing the plugin installs all of them — 2,733 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. 2d ago Changed c1360770dab6
  2. 9d ago Changed 741c648aa2c8
  3. 1mo ago Changed 9267cb8de827
  4. 1mo ago First seen · 11 lines scan A 0eb84dd0d314

Subscribe to this mod's changes

circle is a plugin published in the GitHub repository circlefin/skills (155 stars, last pushed 2d ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.

Finance and fintechWeb3 and blockchain
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