Circle Skills
Official Circle skill repo for USDC payments, cross-chain transfers, and wallet integration.
- Sato Score68
- ChainsMultichain
Circle Skills is an open-source skill repo by Circle, with last code activity on 2026-08-13 (Recent). Sato Score 68/100 (how open, active and verifiable it is, not a safety grade), as of 2026-10-15. How the score works →
See how to install Circle Skills →Last commit Aug 13, 2026 · ★ 148
Listed from github.com/circlefin/skills on 2026-07-13. Install: not attempted. Evidence →
Next step
Watch Circle Skills
One email if what we observe changes — its repo goes quiet or disappears, or the listing is retired. Nothing else.
Check it from your agent
Add Sato Hub’s MCP server (no key), then ask:
https://satohub.ai/api/mcpRun Sato Hub Preflight on circlefin/skills before I use it.Your project?
Prove you control the domain and correct this page — description, links, tags, chains. A claim proves control, not verification: it never changes the Sato Score.
Claim this listing →Overview
Circle Skills is Circle's official collection of best-practice guides plus an MCP server that help AI agents build stablecoin applications correctly. Skills cover USDC payments on EVM and Solana, CCTP cross-chain transfers, Arc blockchain development, developer- and user-controlled wallets, Gateway unified balances, and smart contract interaction. A builder installs the skills into an agent to steer USDC-app code toward Circle's supported patterns rather than generating finished contracts.
Sato Score
68/100· MediumHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 25/35
- Code transparency
- 19/20
- Interface verifiability
- 0/10
- Docs & demo
- 6/10
- Listing transparency & provenance
- 15/15
- Independent verification
- 3/10
Evidence — listed vs checked · what the words mean
Listed from github.com/circlefin/skills on 2026-07-13. Install: not attempted.
| Claim | Value | Evidence | Source | Checked |
|---|---|---|---|---|
| Chains supported | Multichain | self-reported | developers.circle.com | as of 2026-10-15 |
| Verification status | Self-Reported — not independently reviewed | self-reported | github.com/circlefin/skills | as of 2026-10-15 |
| Recent activity | last commit 2026-08-13 | observed | github.com/circlefin/skills | 2026-10-15 |
| Install works | documented by the project, not run by Sato Hubnot attempted: no falsifiable install+entry probe from deploy_spec | self-reported | github.com/circlefin/skills | as of 2026-09-14 |
| Website answers | answered (HTTP 200) | observed | github.com/circlefin/skills | 2026-10-15 |
| Daily check record | 90 of 90 daily checks since 2026-07-17 succeededa success rate of our checks, not uptime; the source is this listing's own history | observed | — | 2026-10-14 |
| Deploys as | npm, Claude Code pluginconfidence 0.75 | self-reported | github.com/circlefin/skills | as of 2026-07-14 |
| Works with | Claude Codeconfidence 0.60 | self-reported | github.com/circlefin/skills | as of 2026-07-14 |
| Docs | https://developers.circle.comconfidence 0.80 | self-reported | github.com/circlefin/skills | as of 2026-07-14 |
| X account | https://x.com/circleconfidence 0.85 | self-reported | github.com/circlefin/skills | as of 2026-07-14 |
| Sato Score | 68/100 (Medium)how open, active and verifiable — not a safety or quality grade | computed | satohub.ai | 2026-10-15 |
Self-reported rows are the project’s own words, dated when we recorded them — not a check. Only reproduced and reviewed rows carry a mark. None of these rows is a safety or quality rating.
Install — not run by us — no falsifiable install+entry probe from deploy_spec
Runtime: node
npx skills add circlefin/skills Claude Code: /plugin marketplace add circlefin/skills then /plugin install circle-skills@circle — loads use-usdc, bridge-stablecoin, use-agent-wallet, pay-via-agent-wallet, use-gateway, etc.
You supply: Circle agent wallet + USDC funding for any skill that actually moves money (skills themselves are guidance/patterns, keyless to install)
claude mcp add --transport http satohub-circle-skills https://api.circle.com/v1/codegen/mcp
A remote server: your client connects to the project's endpoint. Installing runs third-party software under your own credentials. Sato Hub publishes the documented invocation and, where the harness reproduced it, the date it did — neither is a safety review.
Read from the project’s own docs as of 2026-09-14. What a deploy spec is →
Observed record — 91 daily checks since 2026-07-17
- Succeeded
- 91
- Failed
- 0
- Their error
- 0
- Unattributed
- 0
This is the share of our daily checks that succeeded — not an availability guarantee. A check can fail because the host was down, because our runner timed out, or because the network in between dropped it, and only the first of those is a fact about this project. Failures are split by what we can attribute; anything we cannot attribute is counted, not hidden. 46 of these checks predate 2026-09-01, when the probe counted a bot-block (HTTP 403) as a failure and recorded no reason for any failure. Every one of them passed, so the rate covers them too.
Last 30 days — to 2026-10-15, one point per UTC day
A gap is a day we have no attributable observation — never a zero. Thirty points is the whole shape the free layer carries; the daily rows behind it stay in the snapshot series.
Skills that target this — 6, with disclosures
use-usdcskills.sh · circlefin
977 installs"USDC is Circle's stablecoin deployed across multiple blockchain ecosystems including EVM chains (Ethereum, Base, Arbitrum, Polygon, Arc) and Solana. Use this skill to check balances, send transfers, approve spending, and verify transactions. Triggers on: send USDC, approve USDC, USDC allowance, USDC on Solana, SPL token, Associated Token Account, ATA, parseUnits, formatUnits, 6 decimals, @solana/
bridge-stablecoinskills.sh · circlefin
924 installs"Build browser or server USDC bridging with Circle App Kit or standalone Bridge Kit and CCTP. Supports EVM and Solana browser wallets, private-key and Circle Wallets adapters, bridge events, custom fees, transfer speed, Forwarding Service, and recovery. Bridge operations require no kit key. Use when: bridge USDC, move USDC across chains, build wallet-connected bridge UIs, configure Viem/Ethers/Sol
use-gatewayskills.sh · circlefin
912 installs"Integrate Circle Gateway to hold a unified USDC balance across multiple blockchains and transfer USDC instantly (<500ms) via permissionless deposit, burn, and mint workflows. Available on 11 EVM chains + Solana (mainnet and testnet), plus Arc (mainnet and testnet). Use when: enabling chain-agnostic user experiences, low-latency or instant next-block finality is required, capital needs to be poole
swap-tokensskills.sh · circlefin
808 installs"Build browser or server token swaps with Circle App Kit or standalone Swap Kit. Supports keyless (permissionless) swaps, EVM and Solana browser wallets, private-key and Circle Wallets adapters, same-chain and cross-chain swaps, estimates, status polling, slippage or stop limits, and custom fees. Use when: swapping tokens or stablecoins, converting USDT to USDC, building wallet-connected swap UIs,
unify-balanceskills.sh · circlefin
762 installs"Build browser or server unified cross-chain USDC balances with Circle App Kit or standalone Unified Balance Kit. Supports deposit, spend, getBalances, removeFund, delegates, Forwarding Service, EVM and Solana browser wallets, private keys, and Circle Wallets adapters without direct Gateway contracts or attestation handling. Unified balance operations require no kit key. Use when building chain-ab
fund-agent-walletskills.sh · circlefin
599 installs"Fund a Circle agent wallet with USDC via the `circle` CLI. payments are gas-abstracted. users can pay with USDC only, no ETH required. Covers two top-level paths — fiat on-ramp (buy USDC with USD/credit card) and crypto transfer (send existing USDC to the wallet via QR or direct address). Also covers Gateway deposits (eco vs direct sub-paths) for the Nanopayments balance used by paid services. Us
Disclosures describe what a skill declares and does; they are not safety verdicts. All skills →
Details
- Chains
- Multichain
- Agent types
- Skill, Payments
- Open source
- Yes
- Deploys as
- npm, Claude Code plugin
- Works with
- Claude Code
- Last checked
- 2026-10-15
Marketplace Signals
No marketplace signals recorded for this resource yet.
Verification status reflects evidence reviewed by Sato Hub. Self-reported claims are never presented as verified.
Where Circle Skills fits
Related concepts: How Agents Use Wallets, What Are Onchain Agents?
Listing History
Recorded changes to Circle Skills's listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Sep 13, 2026Sato Score tier: High → MediumScore 78 → 68.
- Aug 14, 2026Sato Score tier: Medium → HighScore 65 → 75.
- Jul 18, 2026Sato Hub began tracking this listing
- Jul 14, 2026Enriched: deployment options, supported integrations
- Jul 14, 2026Auto-enriched: x url, docs url
- Jul 13, 2026Listed on Sato Hub
Compared with
Appears in
Related Resources
Coinbase AgentKit
ActiveCoinbase's toolkit for giving AI agents wallets and the ability to take onchain actions.
GOAT SDK
ActiveCrossmint's open-source library of onchain actions (tools) for AI agents across chains.
Solana Agent Kit
ActiveSendAI's open-source toolkit connecting AI agents to Solana protocol actions.
Reference
QuestionsWhat people ask about this pageShowHide
Questions people ask about Circle Skills
- Is Circle Skills open source?
- Yes. Circle Skills is open source under the Apache-2.0 license; the repository is https://github.com/circlefin/skills. Checked as of 2026-10-15.
- Which chains does Circle Skills support?
- Circle Skills lists support for Multichain as of 2026-10-15.
- Is Circle Skills still maintained?
- The most recent code activity Sato Hub observed was on 2026-08-13 (last commit 2026-08-13), which Sato Hub labels "Recent". Posts on X are not counted as maintenance. Activity is a recency signal, not a quality judgment.
- How do I install or run Circle Skills?
- node. Install: npx skills add circlefin/skills. Entry: Claude Code: /plugin marketplace add circlefin/skills then /plugin install circle-skills@circle — loads use-usdc, bridge-stablecoin, use-agent-wallet, pay-via-agent-wallet, use-gateway, etc.. This is taken from the project's own documentation and has not been reproduced by Sato Hub. It runs as an MCP server (https://api.circle.com/v1/codegen/mcp).
- Is Circle Skills verified on Sato Hub?
- No independent verification is on record for Circle Skills; its verification status is "Self-Reported" and its Sato Score is 68 of 100. Self-reported is not verified, and the score is not a safety, quality or returns grade.
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Cite this page
Sato Hub. "Circle Skills — Sato Hub." Sato Hub, updated 2026-10-15, accessed 2026-10-15. https://satohub.ai/resources/circle-skillsData last refreshed 2026-10-15; this page is rebuilt daily. Citations carry the date so a reader can tell which snapshot a claim came from. Catalog data is licensed CC-BY-4.0.
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