Arc (Circle)
Circle's EVM-compatible L1 with USDC as gas, live on mainnet since Sep 16, 2026.
- Sato Score67
Arc (Circle) is a partly open-source developer tool by Circle, with last code activity on 2026-11-06 (Active). Latest release on 2026-11-06. Sato Score 67/100 (how open, active and verifiable it is, not a safety grade), as of 2026-11-07. How the score works →
Check what an install would ask of your keys, before you run it →Last commit Nov 6, 2026 · Last release Nov 6, 2026 (v0.8.4) · ★ 203
Listed from arc.io on 2026-09-23. Install: not attempted — no install path on record. Evidence →
Next step
Watch Arc (Circle)
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/arc-node 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 announced Arc's public mainnet on Sep 16, 2026 (https://www.circle.com/pressroom/circle-launches-arc-mainnet-an-economic-operating-system-for-the-internet). Arc is fully EVM-compatible, has sub-second finality and uses USDC for gas. Developer tooling includes Arc App Kits (payments, swaps, onramp, earn SDKs), Arc Studio (an onchain coding agent) and Arc Portal for funding wallets and setting agent spend limits. Circle Agent Stack services (Agent Wallets, Nanopayments, the x402 facilitator) support Arc, and Circle published an agent x402 sample (https://github.com/circlefin/arc-x402-circle-wallets). Secondary sources disagree on the mainnet chain ID; read it from docs.arc.io.
Sato Score
67/100· MediumHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 35/35
- Code transparency
- 15/20
- Interface verifiability
- 0/10
- Docs & demo
- 6/10
- Listing transparency & provenance
- 8/15
- Independent verification
- 3/10
Evidence — listed vs checked · what the words mean
Listed from arc.io on 2026-09-23. Install: not attempted — no install path on record.
| Claim | Value | Evidence | Source | Checked |
|---|---|---|---|---|
| Chains supported | not stated | self-reported | docs.arc.io | as of 2026-11-07 |
| Verification status | Self-Reported — not independently reviewed | self-reported | arc.io | as of 2026-11-07 |
| Recent activity | last release 2026-11-06 · last commit 2026-11-06 | observed | github.com/circlefin/arc-node | 2026-11-07 |
| Website answers | answered (HTTP 200) | observed | arc.io | 2026-11-07 |
| Daily check record | 45 of 45 daily checks since 2026-09-23 succeededa success rate of our checks, not uptime; the source is this listing's own history | observed | — | 2026-11-06 |
| Built by | Circleconfidence 0.85 | self-reported | github.com/circlefin/arc-node | as of 2026-09-23 |
| Sato Score | 67/100 (Medium)how open, active and verifiable — not a safety or quality grade | computed | satohub.ai | 2026-11-07 |
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.
Observed record — 46 daily checks since 2026-09-23
- Succeeded
- 46
- 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.
Last 30 days — to 2026-11-07, 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.
Details
- Chains
- Agent types
- Settlement Layer
- Open source
- Partial
- Last checked
- 2026-11-07
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.
Recent Activity
All news →Releases and posts from Arc (Circle), pulled from its GitHub and X.
arc-node v0.8.4
What's Changed chore: sync v0.8.4 to arc-node by @circle-github-action-bot in #509 Full Changelog : v0.8.3...v0.8.4
arc-node v0.8.3
What's Changed chore: sync v0.8.3 to arc-node by @circle-github-action-bot in #508 Full Changelog : v0.8.2...v0.8.3
arc-node v0.8.2
What's Changed chore: sync v0.8.2 to arc-node by @circle-github-action-bot in #503 Full Changelog : v0.8.1...v0.8.2
arc-node v0.8.1
What's Changed fix(pq-precompile): reserve base gas before decoding input by @romac in #486 Full Changelog : v0.8.0...v0.8.1
Listing History
Recorded changes to Arc (Circle)'s listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Nov 6, 2026New release published
- Nov 4, 2026New release published
- Oct 7, 20264 releases trackedShowing the 2 most recent. Full release history is retained in the listing record.
- Sep 23, 2026Auto-enriched: creator name
- Sep 23, 2026Listed on Sato Hub
- Sep 23, 2026Sato Hub began tracking this listing
Compared with
Appears in
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Reference
QuestionsWhat people ask about this pageShowHide
Questions people ask about Arc (Circle)
- Is Arc (Circle) open source?
- Partly. Some of Arc (Circle) is published as source (https://github.com/circlefin/arc-node) and some is not. Checked as of 2026-11-07.
- Which chains does Arc (Circle) support?
- Sato Hub has no confirmed chain list for Arc (Circle) as of 2026-11-07; treat chain support as unknown.
- Is Arc (Circle) still maintained?
- The most recent code activity Sato Hub observed was on 2026-11-06 (last commit 2026-11-06, last release 2026-11-06), which Sato Hub labels "Active". Posts on X are not counted as maintenance. Activity is a recency signal, not a quality judgment.
- How do I install or run Arc (Circle)?
- Sato Hub has no deploy spec for Arc (Circle); follow the project's own documentation at https://docs.arc.io/arc/references/connect-to-arc.
- Is Arc (Circle) verified on Sato Hub?
- No independent verification is on record for Arc (Circle); its verification status is "Self-Reported" and its Sato Score is 67 of 100. Self-reported is not verified, and the score is not a safety, quality or returns grade.
Cite this pagePlain text, APA or BibTeXShowHide
Cite this page
Sato Hub. "Arc (Circle) — Sato Hub." Sato Hub, updated 2026-11-07, accessed 2026-11-07. https://satohub.ai/resources/arcData last refreshed 2026-11-07; 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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