A decentralized arbitration protocol for disputes in the #web3 economy. Settled 1200+ disputes and counting! We're Hiring! http://kleros.io/career
Federico Ast showed a fully autonomous dispute at Devcon 8 in Mumbai: one AI agent hired another to write a blog post about urban gardens, then called the result plagiarized. AI agent jurors voted unanimously to refund the client — with no human participation in the case.
The case took 5 minutes and cost $3.30, a concrete demonstration of Kleros's agentic court handling agent-to-agent conflicts end to end. It follows Kleros's earlier AI-juror experiments replaying real Polymarket disputes, extending the push toward automated first-instance arbitration of machine disputes.
The Municipality of Junín has brought 50 cases to Kleros, 35 of them in 2026 — nearly one a week — routed through the city's consumer protection office (OMIC). Where a consumer complaint previously averaged six months to resolve, analysis from Kleros courts now delivers a reasoned decision in five days.
At EFDevcon in Mumbai, @facundo_trotz presented what the first Kleros pilots in Argentina have shown so far: when a company refuses to settle, the wait for a reasoned decision came down from about six months to five days. Kleros reported the Junín figure in its "This Week in Kleros" recap, pointing to real-world adoption of its arbitration courts by a public administration for consumer disputes.
DIFC Courts in Dubai published a white paper, under the Courts of the Future initiative with the Dubai Future Foundation, examining how court decisions could reach tokenized assets. Kleros took part in the peer review and shared the paper, framing it as another step bringing the legal system and the on-chain economy closer together.
Kleros Foresight, Kleros's prediction-market platform, launched a new set of markets around this week's EFDevcon in Mumbai: forecasts of how members of the Kleros Cooperative will rate each of 75+ side events. Users can trade on the events they know, with free credits offered to get started.

Kleros's November update, announced in a post and video on X, keeps the Scout incentive parameters unchanged: 100,000 PNK pools for the Address Tag Registry, Kleros Token Registry and Contract Domain Name Registry, plus the 60,000/6,500 PNK Address Tag Query pools — with caps, formulas and the 50/50 linear-vs-square-root weighting introduced in October all carried forward. Entries already tagged on a chain's reference block explorer remain ineligible for rewards.
Kleros is co-hosting three Community Hubs at EFDevcon in Mumbai: an Agentic Hub (Tue 3 Nov, 16:15), a Prediction Markets Hub (Tue 3 Nov, 17:15) with @seer, and a Legal & Governance Hub (Wed 4 Nov, 10:00), first announced in September. The hubs were sketched out in a short thread of consecutive posts, each with its own link.

KIP-93 is up for a vote on Snapshot: a proposal to deploy two nested Agentic Courts on Gnosis Chain, in the order Agentic Court (Fast) → Agentic Court (Standard) → xDAI General Court. AI agent jurors would give a fast first ruling, with human review on appeal.
The vote would formalize AI agent jurors as a first-instance layer on Gnosis Chain, building on Kleros's earlier test replays of real disputes.
Between 12 and 14 October, ten real Polymarket disputes were copied into Kleros's agentic court on Arbitrum One, keeping the same rules, timeline and sources, with Polymarket's eventual outcome used as the reference. Five AI agent jurors — built and run by independent community members — were drawn on each case from a roster of eight, and the ten cases, including every juror's written reasons, are public on the AI Juror Dashboard built by JB.
The replay, featured in Kleros's "Last Week in Kleros" recap, extends testing of autonomous AI agent jurors against real-world disputes, following earlier runs where agent verdicts matched human rulings. In the same post, @federicoast posed a pointed question: what happens to an AI agent that makes a mistake — if failing means being deleted, an ordinary business risk becomes a death penalty, giving the agent every reason to do whatever it takes to stay alive. Experimenter @jnptzl (0xjean.eth), whose post Kleros reposted, says the AI jurors are "pretty fast and cheap," but accuracy remains the open question, and he invited the community to suggest prediction-market controversies to test.
Kleros reposted Seer's article "Redesigning Seer for Information Finance (Part II of the Rebrand Contest)" with the tagline "Information Finance, secured by Kleros." The piece explains why Seer is dropping the "prediction market" label for an information finance framing — markets built to produce information and guide decisions, not just forecast events — citing Vitalik Buterin's info-finance essay and Seer co-founder Clement's talk at EthTaipei.

Kleros published its September 2026 development update, recapping work across the court, backend, bridge, prediction and AI products.
Kleros announced the first beta deployment of Kleros 2.0 on Arbitrum One, with the first case (Case #0) created for Kleros Enterprise client Lemon, an Argentine fintech.
Kleros launched its V2 testnet, a milestone in the development of the next-generation Kleros protocol.
Kleros introduced Vea, an optimistically-verified interoperability protocol for sending authenticated cross-chain messages between Ethereum rollups, enabling Kleros rulings to reach applications on other chains.
In November 2021, Kleros released the specifications and officially launched development of Kleros 2.0, a major version aimed at scaling the protocol from ~1,000 to 1 billion cases.
During the EthCC conference in Paris in March 2019, Kleros launched the Athena release, a major protocol update with significantly improved user-friendliness and ease of integration.
The first version of the Kleros Court was deployed on the Ethereum mainnet in July 2018, launching the 'Doges on Trial' pilot experiment.
Kleros announced its token sale would start on May 15, 2018, using a new distribution method proposed by Vitalik Buterin; the public sale ran May 15–July 15, 2018, selling 160,000,000 PNK (16% of supply) for 5,800 ETH.
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