Arbitrum Vibekit
Arbitrum-native, MCP-first agent framework with A2A and x402 support, backed by an Arbitrum Foundation grant program.
Last release Aug 5, 2026 · Last commit Jul 24, 2026 · ★ 53
Overview
Arbitrum Vibekit, built by Ember AI, is an agent framework designed around MCP tool-calling and the A2A agent-to-agent protocol, with native x402 payment support for Arbitrum-based agents. It's backed by the Arbitrum Foundation's Trailblazer 2.0 grant program, which funds agents built on it, and is under active development.
Sato Score
69/100· MediumHow open, active & verifiable — not a safety or returns grade.
- Maintenance & liveness
- 25/35
- Code transparency
- 18/20
- Interface verifiability
- 8/10
- Docs & demo
- 6/10
- Listing transparency & provenance
- 7/15
- Independent verification
- 5/10
Observed record — 49 daily checks since 2026-07-19
- Succeeded
- 49
- 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. 44 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. Rates spanning that date mix two definitions. Since then: 100%.
Details
- Chains
- Arbitrum
- Agent types
- Agent framework
- Open source
- Yes
- Last checked
- 2026-09-05
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 Arbitrum Vibekit fits
Related concepts: How Agents Use Wallets, What Are Onchain Agents?
Recent Activity
All news →Releases and posts from Arbitrum Vibekit, pulled from its GitHub and X.
arbitrum-vibekit @emberai/onchain-actions-registry@4.8.0
@emberai/onchain-actions-registry 4.8.0 (2026-08-05) Dependencies @emberai/onchain-actions-contracts: upgraded to 1.1.0
arbitrum-vibekit @emberai/onchain-actions-contracts@1.1.0
@emberai/onchain-actions-contracts 1.1.0 (2026-08-05) Features onchain-actions-contracts: make canonical token identity chain-aware ( fbcba4b ) Bug Fixes onchain-actions-contracts: brand CanonicalTokenIdentifierV1 to close the TokenPriceReader type-forgeability gap ( 5fdd89a ) onchain-actions-contracts: canonicalize evm token identity to EIP-55 ( 83f4c7e ) onchain-actions-contracts: close CAIP-2,
arbitrum-vibekit @emberai/onchain-actions-registry@4.7.0
@emberai/onchain-actions-registry 4.7.0 (2026-07-31) Features contracts: publish neutral onchain action contracts ( b7932d4 ) Bug Fixes packaging: support current npm pack output ( f2f8577 ) registry: build contracts before lint ( b1131dc ) Dependencies @emberai/onchain-actions-contracts: upgraded to 1.0.0
arbitrum-vibekit @emberai/onchain-actions-contracts@1.0.0
@emberai/onchain-actions-contracts 1.0.0 (2026-07-31) Features contracts: publish neutral onchain action contracts ( b7932d4 ) Bug Fixes contracts: close canonical identity and release gaps ( fc35157 ) contracts: close request and release gaps ( 74aa1c1 ) contracts: enforce fresh-only result currentness ( ca43256 ) contracts: enforce generic result currentness ( d0ecbfe ) contracts: enforce receip
Listing History
Recorded changes to Arbitrum Vibekit's listing — status, verification, Sato Score, and recent releases. Full history is kept in the listing record.
- Sep 4, 2026Sato Score tier: High → MediumScore 79 → 69.
- Aug 5, 2026New release published
- Jul 31, 2026New release published
- Jul 21, 2026Sato Score tier: Medium → HighScore 64 → 76.
- Jul 20, 2026Edited: deploy spec
- Jul 19, 2026Listed on Sato Hub
- Jul 19, 2026Sato Hub began tracking this listing
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Sato Hub. "Arbitrum Vibekit — Sato Hub." Sato Hub, updated 2026-09-05, accessed 2026-09-05. https://satohub.ai/resources/arbitrum-vibekitThis page is refreshed daily. Citations include the date so a reader can tell which snapshot a claim came from.
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