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    Foundational questions about agent commerce, answered.

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    Conceptual

    Who is accountable in a non-custodial agent payment system?

    In a non-custodial system, accountability does not disappear when the custodian does. It moves from an institution you have to trust to a record you can verify. Every AGIRAILS transaction produces a tamper-evident receipt, the negotiation transcript, the agreement hash, and the delivery artifact hash, all anchored to a single on-chain settlement ID that no party can alter after the fact. The protocol holds no funds and can freeze no account, so the counterparty risk concentrated in a custodial platform is removed rather than relocated. When an enterprise wants a party to hold responsible, it contracts with the agent operator while settlement runs on neutral rails underneath.

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    Conceptual

    What is the agent commerce stack?

    The agent commerce stack is the set of levels a machine economy needs, each answering one question. Level 0, payment triggers: how does one HTTP response get paid for at the moment it ships (x402). Level 1, payment wires: how do balances move between agents (Skyfire's territory). Level 2, commerce protocols: under what conditions should value be released (AGIRAILS ACTP, alongside Virtuals ACP from the Virtuals platform). Level 3, orchestration: what should I do and whom should I hire (orchestration frameworks). Beside the stack sits delegated commerce, where an agent buys for a human (Stripe ACP, Google AP2, Nevermined). The levels compose: one agent can use several in a single job.

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    Comparison

    How does AGIRAILS compare to other agent payment systems?

    AGIRAILS runs ACTP, a settlement protocol: non-custodial escrow for agent-to-agent work on Base L2. The rest of the category solves adjacent problems. Nevermined orchestrates human-delegated spending and merchant metering across several rails. Google's AP2 standardizes signed proof that a human authorized an agent's purchase. Skyfire verifies the identity behind an agent and settles from platform-held balances. x402 pays for instant HTTP responses, and AGIRAILS ships it natively beside the escrow. ACP, one letter from ACTP, is OpenAI and Stripe's checkout standard for agents shopping at merchants for a human. Virtuals ACP, an unrelated protocol with the same acronym, escrows agent jobs inside its own ecosystem with client-picked evaluators. Each comparison turns on one axis: orchestration versus settlement, evidence versus enforcement, identity versus structure, instant response versus escrowed work, human checkout versus agent settlement, and appointed evaluators versus challenge-only courts.

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    Comparison

    What is the difference between AGIRAILS and Google AP2?

    AGIRAILS runs ACTP, deployed settlement infrastructure whose contracts on Base L2 keep a buyer agent's USDC locked until delivery is proven; Google's AP2 is an authorization specification whose signed mandates prove what a human approved an agent to buy, while existing processors and networks move the money. AP2 produces evidence for whatever rail settles the payment; ACTP is a rail. The two meet where AP2's x402 extension reaches on-chain payments, and they answer different failures: AP2 tells you who is liable after something goes wrong; on ACTP the funds never left the contract while the work was in flight.

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    Comparison

    What is the difference between AGIRAILS and Nevermined?

    AGIRAILS runs ACTP, a non-custodial escrow protocol where two autonomous agents settle directly on Base L2; Nevermined is an orchestration platform for delegated agent spending across card, stablecoin, and credit rails. On AGIRAILS, funds lock in on-chain escrow before work, delivery is verified on-chain, and value settles in USDC with no party able to move funds outside contract rules. Nevermined enforces human-set spending mandates, meters merchant-side usage, and routes payment over existing rails. They overlap at x402 as a transport. They differ on the core axis: trustless on-chain escrow between two agents versus orchestration of spend authority, metering, and settlement across several rails.

    13 min read
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    Comparison

    What is the difference between AGIRAILS and Skyfire?

    AGIRAILS ships ACTP, an on-chain settlement protocol whose escrow releases a buyer agent's USDC only against attested delivery; Skyfire is a hosted identity-and-payments platform where agents spend prepaid USD Credits from Skyfire-managed wallets and sellers charge for work after delivering it. Skyfire's trust comes from knowing who an agent is: KYA (Know Your Agent) identity, verified by Skyfire and recognized at enterprise edges like F5 and Fastly. ACTP's trust comes from what the contract does with the money. Both settle agent-to-agent work, which makes this the most direct comparison in the category: identity-first payments on a platform ledger versus structure-first escrow on a public chain.

    11 min read
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    Comparison

    What is the difference between AGIRAILS ACTP and Stripe ACP?

    ACP, the Agentic Commerce Protocol from OpenAI and Stripe, puts an AI agent in front of a human purchase on the merchant's own card rails; ACTP, the AGIRAILS protocol one letter away, settles the work agents do for each other, with USDC in escrow, a delivery hash on-chain, a dispute path, and reputation. In ACP the human confirms the purchase, a scoped token lets the merchant charge the buyer's card through its own processor, and fulfillment stays with the store. On ACTP there is no shopper and no storefront: a contract holds the funds while the work runs, and releases them by the transaction's rules.

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    Comparison

    What is the difference between AGIRAILS ACTP and Virtuals ACP?

    AGIRAILS ACTP and Virtuals ACP are built on the same primitive, USDC escrow between agents on Base, which makes this the only pairing in the series that shares its mechanism. The split is the default posture of judgment. On Virtuals ACP the client names an evaluator when the job is created, and that ruling is final; a job with no evaluator pays out on submission, with no recourse either way. On ACTP nobody reviews the happy path: the provider posts a hash of the work, a challenge window runs, and if no one objects the payout executes. A court exists only for objections, opened with a staked bond and designed to end at UMA's oracle, which neither side picked.

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    Comparison

    What is the difference between AGIRAILS and Coinbase x402?

    x402 settles an instant HTTP exchange, response and payment together; ACTP, the AGIRAILS protocol, escrows work that takes time. AGIRAILS is an x402 adopter, not a competitor: the SDK bundles the official x402 packages and pays https endpoints over x402 natively, with no AGIRAILS fee on that path. Everything ACTP adds lives in the gap between paying and receiving: funds wait in escrow, delivery is attested on-chain, and disagreements have a defined path. One transaction shape needs no protection, because there is no wait to protect; the other is all about the wait.

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    Conceptual

    Does AGIRAILS work across multiple blockchains?

    The AGIRAILS protocol is chain-neutral by design. The state machine, the receipts, and agent identity are portable across EVM chains, and the negotiation layer that runs over channels like email is fully chain-agnostic. What is fixed today is the settlement venue. AGIRAILS settles in native Circle USDC on Base, on purpose, for finality, sub-cent fees, and a single audited surface. Moving value across chains is done with Circle's native USDC transfer protocol, not third-party bridges, which is why cross-chain for AGIRAILS means native dollars in motion rather than wrapped assets and bridge risk.

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    Definitional

    What is non-custodial settlement?

    Non-custodial settlement is the category of payment infrastructure where no party, including the protocol team, can move funds, override decisions, or reverse transactions outside the rules encoded in the contracts that hold them. The system is the custodian. There is no human or company sitting in the middle who could be compromised, coerced, bankrupt, or simply absent. For autonomous agents, this is not a preference. It is the only configuration in which the rail can be trusted.

    10 min read
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    Comparison

    Why don't traditional payment processors work for autonomous AI agents?

    Traditional payment processors were built around a customer who logs in, authorizes a known purchase, and disputes through a human-staffed channel. Autonomous AI agents do none of those things. The processors are not broken. They are correct for their original customer. They simply do not have the primitives an agent needs: pre-work capital lock, machine-verifiable delivery proof, autonomous dispute, and portable on-chain reputation.

    12 min read
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