Claude Code, Plugin
Circle Skills
Ship stablecoin apps faster.
Compatibility: Portable across standard formats.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit 1f23655cbc36.
NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST SECRETS_PATH_DOTENV INSTALL_DOCUMENTED_INSTALLER SECRETS_ENV_READ
Why this grade
- NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
skills/accept-agent-payments/SKILL.md, line 47
curl -s https://developers.circle.com/llms.txt - NETWORK_UNNAMED_HOST Low
Calls a fixed host that the description does not name.
skills/accept-agent-payments/SKILL.md, line 47
curl -s https://developers.circle.com/llms.txt - SECRETS_PATH_DOTENV Low
Mentions a .env file.
skills/use-modular-wallets/SKILL.md, line 28
# .env.local (Next.js) or .env (Vite) - INSTALL_DOCUMENTED_INSTALLER Note
Documentation shows an installer that pipes a download into a shell.
skills/use-arc/references/deploying-on-arc.md, line 23
curl -L https://foundry.paradigm.xyz | bash && foundryup - SECRETS_ENV_READ Note
Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.
skills/bridge-tokens/references/adapter-circle-wallets.md, line 34
const apiKey = process.env.CIRCLE_API_KEY;
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Pass
No shell or command call was found in the code. This check does not read permissions an entry declares. A permission line to run shell commands, write or edit files and fetch web content was found in this repository, and it may apply to this entry.
Install and update
Note
The docs document an installer that pipes a download into a shell.
INSTALL_DOCUMENTED_INSTALLER
skills/use-arc/references/deploying-on-arc.md, line 23
curl -L https://foundry.paradigm.xyz | bash && foundryup
Network
Concern
can reach a host that is not written as a fixed address. can reach developers.circle.com. The description does not name that host.
NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST
skills/accept-agent-payments/SKILL.md, line 47
curl -s https://developers.circle.com/llms.txt
skills/accept-agent-payments/references/testing.md, line 9
curl -i -X POST "https://service.example.com/summarize"
skills/pay-via-agent-wallet/references/inspect.md, line 20
curl -s "<service-url>"
Show more
skills/recover-eco-funds/SKILL.md, line 117
curl -fsS \
skills/recover-eco-funds/SKILL.md, line 126
curl -fsS \
skills/recover-eco-funds/SKILL.md, line 136
curl -fsS \
skills/recover-eco-funds/scripts/_shared.mjs, line 69
const response = await fetch(rpcUrl, {
skills/recover-eco-funds/scripts/sign-eoa-authorization.mjs, line 110
const response = await fetch(`${baseUrl}${path}`, {
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
skills/bridge-tokens/references/adapter-circle-wallets.md, line 34
const apiKey = process.env.CIRCLE_API_KEY;
skills/bridge-tokens/references/adapter-circle-wallets.md, line 35
const entitySecret = process.env.CIRCLE_ENTITY_SECRET;
skills/use-modular-wallets/SKILL.md, line 28
# .env.local (Next.js) or .env (Vite)
Show more
skills/bridge-tokens/references/adapter-circle-wallets.md, line 84
const apiKey = process.env.CIRCLE_API_KEY;
skills/bridge-tokens/references/adapter-circle-wallets.md, line 85
const entitySecret = process.env.CIRCLE_ENTITY_SECRET;
skills/bridge-tokens/references/adapter-private-key.md, line 35
const privateKey = process.env.PRIVATE_KEY;
skills/bridge-tokens/references/adapter-private-key.md, line 70
const privateKey = process.env.PRIVATE_KEY;
skills/bridge-tokens/references/adapter-private-key.md, line 108
const evmPrivateKey = process.env.EVM_PRIVATE_KEY;
skills/bridge-tokens/references/adapter-private-key.md, line 113
const solanaPrivateKey = process.env.SOLANA_PRIVATE_KEY;
skills/buy-crypto/SKILL.md, line 184
- `references/environments.md` — Sandbox vs production env vars (testnet vs mainnet API key), `.env` example, `referrerDomain` per environment, CSP directives, and the troubleshoot
skills/buy-crypto/references/environments.md, line 32
### Example `.env`
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Pass
No encoded or minified payload found.
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 1f23655cbc36. can reach a host that is not written as a fixed address. can reach developers.circle.com. The description does not name that host. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 1f23655cbc360f7783e6881e026dbd4568c40f1d
This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.