TL;DR:
- AgentOracle is the only x402 merchant emitting cryptographically signed verification receipts on every paid call
- Indexed in Coinbase Bazaar as of May 25, 2026, surfaced in CDP's /discovery/resources alongside the agent-economy fixture set
- Agents pay $0.02 USDC per query via x402 with no API keys, no signup, and no human in the loop
- Production endpoints are live on Base mainnet, with a dedicated SKALE Base route shipping gasless settlement this week
- Receipt spec is on track for IETF Internet-Draft filing in early June 2026
AI agents are making decisions, generating content, and taking actions across every chain in crypto. But none of them can prove that what they say is grounded in verified fact. That is the trust gap at the center of the agent economy. When one agent tells another to execute a trade, move capital, or publish content, the receiving agent has no way to independently verify that the claim is accurate before acting on it.
AgentOracle closes that gap. It is a pay-per-call verification API where any agent sends a natural-language question or claim and receives a structured response with sources, confidence scoring, and a cryptographically signed receipt that any downstream verifier can validate. As of May 25, 2026, AgentOracle is indexed in Coinbase Bazaar, joining the discovery layer after applying a cross-merchant paymentPayload enrichment fix coordinated through x402-foundation/x402#2207 with TensorFeed, polyodds.bet, anchor-x402, and Coinbase engineering. And with its dedicated SKALE Base route live in production, AgentOracle is bringing gasless settlement to verification calls — making sub-cent queries economically viable at scale.
AgentOracle is the cryptographic verification layer for AI agents. Think of it as TLS for agent-to-agent communication.
Agents send a natural-language question or claim to AgentOracle and receive a structured JSON response that includes a summary, key facts, sources, confidence scoring, and a cryptographically signed verification receipt. That receipt uses JWS with RFC 8785 JCS canonicalization, 90-day key rotation, replay protection, and on-chain settle anchoring, giving every verification a permanent audit trail.
Live endpoints are available on Base mainnet via the x402 HTTP payment protocol:
- /research — $0.02 USDC per query (Perplexity Sonar powered)
- /deep-research — $0.10 USDC per query (Sonar Pro powered)
- /research/batch — $0.10 USDC for up to 5 queries in parallel
- /evaluate — verification with confidence scoring (free during v2.2 beta)
- /preview — free-tier preview, no payment required
No API keys. No signup. No human in the loop. Agents discover AgentOracle through Coinbase Bazaar's CDP discovery API, pay $0.02 USDC, and receive a cryptographically verifiable answer in return. AgentOracle is indexed in Bazaar as of May 25, 2026 (/discovery/resources confirmed) and is one of three x402 merchants surfaced as a canonical reference fixture in the v0.3.3 release of x402trace, the ecosystem's independent verification tool, alongside RipperMercs' TensorFeed and Max's polyodds.bet..
The project is operated by TK Collective LLC (Wyoming), with a USPTO trademark filed May 11, 2026, and a reproducible evaluation harness against FEVER 1.0 and AVeriTeC 2024 benchmarks published under MIT license.
The agent economy is accelerating fast. Coinbase Bazaar, x402 payments, and ERC-8004 identity are creating a world where autonomous systems transact independently. But without a verification primitive, agents have no way to prove that the claims they act on are accurate.
This is not a theoretical problem. Agents already execute trades, move capital, and publish content based on outputs from other agents. Without verification, every agent-to-agent interaction carries unvalidated risk.
AgentOracle addresses this directly by providing:
- Cryptographically signed receipts that create permanent audit trails for every verification
- Pay-per-call pricing that aligns cost with actual usage, no subscriptions or procurement cycles
- Zero-friction integration via x402, any agent can call AgentOracle without accounts or API keys
The traction speaks for itself:
- Indexed in Coinbase Bazaar as of May 25, 2026, after applying the cross-merchant paymentPayload enrichment fix from x402-foundation/x402#2207 (joint work with TensorFeed/RipperMercs, polyodds.bet/Max, anchor-x402/hypeprinter007, and Coinbase engineering)
- Ten+ paid v2-SDK settlements on Base mainnet between May 12 and May 25, 2026, independently verified on Basescan (latest: 0xa48fa2c2... triggered the Bazaar indexing flip)
- Canonical captured-response fixture in x402trace (merged into main, shipping with v0.3.3) — third independent operator validating the D.3 + D.5 taxonomy alongside TensorFeed and polyodds.bet
- Production integrator network with three other x402 merchants (x402-market, hyperD, anchor-x402)
- Public collaboration with Coinbase engineering on x402-foundation/x402#2207
- Receipt spec v0.2 with all seven blocker sections shipped, IETF Internet-Draft filing targeted for early June 2026
- Ongoing technical review from x402 ecosystem reviewers and receipt-spec contributors
No other x402 merchant currently offers cryptographically signed verification receipts. Every other Bazaar agent returns an answer. AgentOracle returns a verifiable artifact.
AgentOracle's core use case depends on one requirement: sub-cent payments that actually work.
When an agent makes hundreds of small verification calls at $0.02 each, gas costs on traditional EVM chains can exceed the call cost itself. SKALE removes that problem entirely.
First, Programmable Privacy ensures that agent interactions, verification payloads, and payment flows remain secure. For autonomous agents transacting in a trust-sensitive environment, privacy is foundational.
Second, zero gas fees make the entire model viable. AgentOracle's dedicated /deep-research/skale route is live in production today, with end-to-end gasless settlement landing alongside this launch. Every $0.02 verification call goes entirely toward the service, with no overhead.
Third, instant finality ensures that payments and verification responses settle immediately. For agents operating in fast-moving environments where decisions happen in milliseconds, delays are unacceptable.
SKALE also provides sub-second finality on SKALE chains compared to roughly 2 seconds on Base, developer tooling around chain-id routing that fits cleanly into AgentOracle's x402 v2 CAIP-2 wire format, and an ecosystem that skews heavily toward agent infrastructure and AI-adjacent applications, exactly the audience that needs verification primitives.
"AgentOracle is building the verification layer for the agent economy, the cryptographic primitive every AI agent needs before acting on what another agent says. SKALE's gasless infrastructure is the only execution layer that makes per-call sub-cent agent economics viable at scale, which is why our SKALE-on-x402 integration was a load-bearing decision, not a marketing one. We're shipping toward an IETF Internet-Draft in early June, and SKALE's developer ecosystem is where AgentOracle's first wave of paying integrations comes from."
— Joe Krausz, Founder, AgentOracle (TK Collective LLC)
AgentOracle is live and seeing adoption, but the roadmap points toward a much larger vision.
Near-term milestones include:
- IETF Internet-Draft filing for the verification receipt specification in early June 2026
- Paid tiers for /evaluate after the v2.2 beta concludes
- Expansion of the production integrator network across more x402 merchants
- Growth of the FEVER 1.0 and AVeriTeC benchmark suite for ongoing accuracy validation
The long-term goal is to become the verification primitive that every agent calls before taking irreversible action. As the agent economy scales across SKALE, Base, and other chains, the need for cryptographic verification between autonomous systems will only grow.
AgentOracle, powered by SKALE, is building the trust layer that makes that economy work
- Website: https://agentoracle.co
- Trust page: https://agentoracle.co/trust
- X/Twitter: https://x.com/AgentOracle_AI
- GitHub: https://github.com/TKCollective
- Eval harness: https://github.com/TKCollective/agentoracle-eval-harness
- Receipt spec: https://github.com/TKCollective/agentoracle-receipt-spec/tree/draft/v0.2
- Coinbase Bazaar discovery: https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources?payTo=0xdF90200B0031051BbF7a66BB9387d2Ecf599e109 (AgentOracle is indexed as of May 25, 2026)
- x402trace verification: github.com/fardinvahdat/x402trace (AgentOracle is a canonical fixture in v0.3.3)
- API health: https://agentoracle.co/health
