---
title: "AI Agent Payments Map: 140 Companies and Protocols (Nov 2026) | AIsa"
description: "Every company and protocol between an AI agent and the seller it pays: 140 names across 8 layers, each with a public source. Search the list or download it."
canonical: "https://aisa.one/research/agent-payments-stack"
---

# AI Agent Payments Map: 140 Companies and Protocols (Nov 2026) | AIsa

Every company and protocol between an AI agent and the seller it pays: 140 names across 8 layers, each with a public source. Search the list or download it.

[Download the sourced list](https://aisa.one/launches/agent-payments-stack/assets/data/agent-payments-stack-nov-2026.csv)

## Buyer agents

- [Opera Neon](https://www.operaneon.com/news/opera-ships-the-opera-neon-ai-agentic-browser): Agentic browser whose Neon Do agent shops and books inside the user's session (2025-09)

- [Perplexity (Instant Buy & Comet)](https://www.perplexity.ai/help-center/en/articles/10352906-what-is-instant-buy): Answer engine and Comet browser with in-chat checkout via PayPal and Venmo

- [Amazon Alexa for Shopping (Buy for Me)](https://www.aboutamazon.com/news/retail/how-to-use-amazon-shopping-ai-assistant): Amazon's shopping agent; Buy for Me orders from other brands' own sites (2026-10)

- [ChatGPT (OpenAI)](https://chatgpt.com/merchants/): ACP-based product discovery; purchases now finish in merchant checkout or apps

- [Google AI Mode & Gemini](https://support.google.com/merchants/answer/16837055): UCP-powered checkout inside Search AI Mode and Gemini, paid with Google Pay

- [Meta Muse](https://about.fb.com/news/2026/09/introducing-muse-personal-ai-agent/): Meta's personal agent; pays through Stripe's Link wallet with one-time cards (2026-09)

- [Microsoft Copilot Checkout](https://news.microsoft.com/source/2026/01/08/microsoft-propels-retail-forward-with-agentic-ai-capabilities-that-power-intelligent-automation-for-every-retail-function/): In-chat checkout in Copilot with PayPal, Shopify and Stripe merchants (2026-01)

- [ASI:One (Fetch.ai)](https://www.fetch.ai/blog/world-s-first-ai-to-ai-payment-for-real-world-transactions): Personal AI with a spend-capped wallet: Visa tokens, USDC or FET for agent tasks (2025-12)

- [Bankr](https://github.com/BankrBot/skills/blob/HEAD/bankr/references/x402-cloud.md): Crypto trading agent with a wallet that pays x402 endpoints under a spend cap

- [HeyElsa](https://x402.heyelsa.ai/): DeFi copilot that executes trades; its trading API is sold per call over x402

- [Pearl (Olas)](https://www.pearl.you/): Desktop app store for autonomous Olas agents that hold and spend their own funds

## Wallets & credentials

- [Basis Theory](https://developers.basistheory.com/docs/guides/agentic/overview): Vault that mints single-use agent credentials from customer-approved allowances

- [Lithic](https://www.lithic.com/solutions/agentic-commerce): Card issuing API with per-card auth rules for agent-initiated purchases

- [Nekuda](https://www.businesswire.com/news/home/20250514808097/en/Nekuda-Raises-%245M-Led-by-Madrona-Together-with-Amex-Ventures-and-Visa-Ventures-to-Power-Agentic-Payments): Agent wallet SDK storing card credentials with mandates; Visa VIC partner (2025-05)

- [Prava](https://www.prava.space/blog/prava-integrates-visa-intelligent-commerce-to-enable-secure-card-based-agentic-payments-across-ai-applications): One-time Visa tokens locked to merchant and amount, approved by passkey (2026-02)

- [Rain](https://www.rain.xyz/resources/introducing-the-agent-control-layer): Stablecoin card issuer; scoped single-use agent cards and Agent Control Layer

- [Skyfire](https://docs.skyfire.xyz/docs/kyapay-tokens): KYAPay signed tokens carrying verified agent identity and payment

- [Circle](https://www.circle.com/blog/introducing-circle-agent-stack-financial-infrastructure-for-the-agentic-economy): Agent Stack: USDC agent wallets, CLI, marketplace and x402 nanopayments (2026-05)

- [Coinbase Developer Platform](https://www.coinbase.com/developer-platform/discover/launches/agentic-wallets): Agentic Wallets: CLI/MCP wallets with session caps, KYT and x402 payments (2026-02)

- [Crossmint](https://docs.crossmint.com/agents/overview): Agent wallets, scoped agent cards and checkout APIs under user-set limits

- [Fireblocks](https://www.fireblocks.com/blog/agentic-payments-suite-psp-fintech): Agentic Payments Suite: delegated agent wallets plus x402 gateway for PSPs (2026-05)

- [Lit Protocol (Vincent)](https://github.com/LIT-Protocol/Vincent): Vincent: user-owned agent wallets with revocable, programmable policies

- [Merit Systems](https://merit.systems/developers): AgentCash USDC wallet/MCP for pay-per-call APIs; runs x402scan and MPPscan

- [MoonPay](https://www.moonpay.com/newsroom/moonagents-card): MoonPay Agents CLI wallets plus MoonAgents Card, a stablecoin Mastercard (2026-05)

- [Openfort](https://www.openfort.io/agent-wallets): Agent wallets with scoped session keys, spend caps and fail-closed policies

- [Para](https://www.getpara.com/agents): MPC agent wallets via REST API with transfer limits; supports x402 and MPP

- [Privy](https://stripe.com/newsroom/news/aws-stripe-agentcore-privy): Stripe-owned wallet API; policy-capped agent wallets behind AWS AgentCore pay (2026-05)

- [Sponge](https://docs.paysponge.com/): YC agent wallet with stablecoins, virtual cards, ACH and x402/MPP payments

- [Turnkey](https://docs.turnkey.com/solutions/company-wallets/agentic-wallets): Enclave-based agent wallets with deny-by-default signing policies

## Agent accounts & spend control

- [Anchorage Digital](https://www.anchorage.com/press-room/anchorage-digital-launches-agentic-banking-and-partners-with-google-cloud-to-power-the-operating-layer-for-ai-and-capital): Agentic Banking: budgets, merchant allowlists and KYA on a chartered bank (2026-05)

- [ATXP](https://docs.atxp.ai/agents): Self-registering agent accounts: wallet, email and pay-per-use tools

- [Catena Labs](https://catena.com/blog/catena-receives-conditional-occ-approval-for-a-national-trust-bank-built-for-ai-agents): Banking and governance platform for agents; OCC conditional trust-bank nod (2026-09)

- [Lightspark](https://www.lightspark.com/capabilities/agentic-payments): Grid Global Accounts with agent permissions, spend limits and approvals

- [Natural](https://www.natural.com/blog/natural-series-a): Payments stack for agents: FDIC-insured wallets, pay/request; $30M Series A (2026-07)

- [Payman AI](https://paymanai.com/about-us): Policy-bound AI agents that move money inside banks and credit unions

- [zerohash](https://zerohash.com/press/zerohash-launches-agentic-finance-suite-to-power-ai-driven-money-movement): Agentic Finance Suite to hold, move and stream money, with KYA screening (2026-07)

- [Mercury](https://www.businesswire.com/news/home/20260811063202/en/Mercury-Launches-Spend-with-Agent-Cards-and-Intelligent-Budgets-for-the-AI-Era): Mercury Spend: human-issued AI agent cards governed by budgets (2026-08)

- [Ramp](https://www.bankless.com/read/news/ramp-adds-x402-payments-for-ai-agents): Corporate spend platform with Agent Cards and x402 agent wallets (alpha) (2026-08)

- [Conto](https://conto.finance/blog/introducing-conto): Policy engine checking agent payments on cards, stablecoins, x402 and MPP (2026-09)

- [Locus](https://docs.paywithlocus.com/agent-platform): USDC agent wallets on Base with budgets, caps and approval thresholds

- [Sapiom](https://www.sapiom.ai/blog/series-a/): Agent spend rules, card vault and approvals; bought Fewsats in 2026 (2026-08)

## Protocols & facilitators

- [Cloudflare](https://blog.cloudflare.com/monetization-gateway-beta/): x402 Foundation co-founder; Monetization Gateway bills agents per request (2026-09)

- [Stripe](https://docs.stripe.com/payments/machine): Co-authored ACP and MPP; merchants accept agent payments via MPP or x402

- [ACP (Agentic Commerce Protocol)](https://github.com/agentic-commerce-protocol/agentic-commerce-protocol): OpenAI and Stripe's open checkout spec for agent purchases, incl. ChatGPT (2026-04)

- [Agent Commerce Kit (Catena Labs)](https://catena.com/blog/agent-commerce-kit): Open ACK-ID and ACK-Pay patterns for agent identity, payments and receipts

- [AP2 (Agent Payments Protocol)](https://fidoalliance.org/fido-alliance-to-develop-standards-for-trusted-ai-agent-interactions/): Google-originated mandate protocol for agent payments, now under FIDO Alliance (2026-04)

- [ATXP (Circuit & Chisel)](https://github.com/atxp-dev/sdk): Agent Transaction Protocol: funded agent accounts that pay per MCP tool call

- [ERC-8004 (Trustless Agents)](https://www.8004.org/blog/welcome-to-8004): Ethereum registries for agent identity and reputation, built to pair with x402 (2026-01)

- [FIDO Alliance](https://fidoalliance.org/building-the-trust-layer-for-agentic-payments-with-ap2-and-verifiable-intent/): Passkey standards body now hosting AP2 and Mastercard's Verifiable Intent (2026-04)

- [KYAPay (Skyfire)](https://kyapay.org/whitepaper): Skyfire's open JWT spec combining verified agent identity with payment authority

- [L402 (Lightning Labs)](https://lightning.engineering/posts/2026-02-11-ln-agent-tools/): Lightning-invoice HTTP 402 scheme; Lightning Agent Tools let agents pay and earn (2026-02)

- [MPP (Machine Payments Protocol)](https://stripe.com/blog/machine-payments-protocol): Stripe and Tempo's HTTP 402 standard covering stablecoins, cards and sessions (2026-03)

- [UCP (Universal Commerce Protocol)](https://developers.googleblog.com/en/under-the-hood-universal-commerce-protocol-ucp/): Google and Shopify's open agent-checkout standard; plugs into AP2 for payment (2026-01)

- [x402 Foundation](https://www.linuxfoundation.org/press/linux-foundation-announces-operational-launch-of-x402-foundation-to-standardize-internet-native-payments-for-ai-agents-and-applications): Linux Foundation body stewarding x402, the HTTP 402 payment standard (2026-07)

- [Circle Gateway (Agent Stack)](https://developers.circle.com/release-notes/agent-stack-2026): Sub-cent USDC nanopayments to x402 services, plus an Agent Marketplace (2026-05)

- [Coinbase Developer Platform](https://docs.cdp.coinbase.com/x402/core-concepts/facilitator): Created x402; runs the leading hosted facilitator with built-in KYT screening

- [Corbits](https://github.com/faremeter/faremeter): Runs a free x402 facilitator and maintains the open-source Faremeter SDK

- [Daydreams](https://github.com/daydreamsai/facilitator): Open-source x402 facilitator plus a pay-per-inference model router

- [Dexter](https://dexter.cash/facilitator): Fee-free public x402 facilitator covering Solana and ten EVM networks

- [FluxA](https://docs.fluxapay.xyz/x402/): Agent wallet with user-signed spend mandates and its own Base x402 facilitator

- [PayAI](https://payai.network/): Multi-chain x402 facilitator for Solana and EVM; no API key needed to start

- [Questflow](https://blog.questflow.ai/p/questflow-facilitator-for-x402-goes): Multi-agent orchestration app that also runs its own x402 facilitator

- [t54 Labs](https://www.t54.ai/blog/xrpl-surpasses-10-million-x402-payments): Runs the XRPL x402 facilitator, which passed 10M payments by October 2026 (2026-10)

- [thirdweb](https://portal.thirdweb.com/x402): Web3 dev platform with x402 SDKs and a facilitator spanning 170+ EVM chains

## Rails & settlement

- [American Express](https://www.businesswire.com/news/home/20260414231355/en/American-Express-Debuts-Agentic-Commerce-Experiences-ACE-Developer-Kit-and-Announces-Industry-First-Protection-for-Registered-Agent-Purchases): ACE developer kit for registered agents, backed by Agent Purchase Protection (2026-04)

- [Mastercard](https://www.pymnts.com/earnings/2026/mastercard-sees-agentic-commerce-growth-despite-travel-headwinds/): Agent Pay with agentic tokens; says nearly all its cards are now enabled (2026-04)

- [UnionPay](https://www.prnewswire.com/news-releases/unionpay-launches-agentic-payment-open-protocol-framework-building-an-open-trusted-smart-payment-ecosystem-302733555.html): Launched Agentic Payment Open Protocol (APOP) with 19 initial partners (2026-04)

- [Visa](https://corporate.visa.com/en/sites/visa-perspectives/newsroom/visa-intelligent-commerce-connect-ai-shopping-for-businesses.html): Intelligent Commerce, Trusted Agent Protocol and a multi-protocol agent on-ramp (2026-04)

- [Arc](https://www.circle.com/pressroom/circle-launches-arc-mainnet-an-economic-operating-system-for-the-internet): Circle's USDC-gas L1, mainnet Sep 2026, pitched as built for AI agents (2026-09)

- [Base](https://blog.base.org/the-agentic-economy-is-here): Coinbase's Ethereum L2; the busiest x402 settlement chain by payment count (2026-05)

- [Kite AI](https://www.globenewswire.com/news-release/2026/04/30/3285380/0/en/kite-launches-kite-chain-and-kite-agent-passport-enabling-autonomous-ai-agent-payments.html): Avalanche-based L1 with Agent Passport for user-bounded agent spending (2026-04)

- [Lightspark](https://www.lightspark.com/news/lightspark/introducing-ai-agent-support-for-grid-global-accounts): Lightning infra firm; extended MPP to Bitcoin and opened Grid accounts to agents

- [Polygon](https://docs.polygon.technology/payment-services/agentic-payments/x402/intro): PoS chain running its own x402 facilitator and Paychannels for micropayments

- [SKALE](https://docs.skale.space/get-started/agentic-builders/start-with-x402): Gas-free EVM network courting x402 agent micropayments

- [Solana](https://solana.com/news/solana-foundation-launches-pay-sh-in-collaboration-with-google-cloud): High-throughput L1; its Pay.sh gateway lets agents pay per call for Google Cloud (2026-05)

- [Stellar](https://stellar.org/x402): L1 supporting both x402 and MPP; SDF sits on the x402 Foundation board

- [Tempo](https://tempo.xyz/blog/mainnet/): Stripe-incubated payments L1; co-author and reference rail of MPP (2026-03)

- [XRP Ledger (Ripple)](https://ripple.com/insights/xrpl-ai-starter-kit/): Ledger where agents settle x402 payments in XRP or Ripple's RLUSD

- [Circle](https://investor.circle.com/news/news-details/2026/Circle-Launches-Arc-Mainnet-an-Economic-Operating-System-for-the-Internet/default.aspx): USDC issuer; says USDC carries 98.8% of agent-driven transaction volume (2026-09)

- [OSL](https://www.globenewswire.com/news-release/2026/08/07/3340938/0/en/osl-group-launches-osl-agentpay-multi-stablecoin-payment-infrastructure-for-ai-agents.html): HK-listed stablecoin firm; AgentPay settles agent payments over x402, AP2, MPP (2026-08)

- [Tether](https://docs.wdk.tether.io/ai/x402/): USDT issuer; its WDK documents x402 payments in USD₮0 on Plasma and Stable

## Merchant acceptance & monetization

- [BigCommerce](https://investors.bigcommerce.com/news-releases/news-release-details/feedonomics-unlocks-agentic-discovery-agentic-catalog-exports/): Feedonomics ACE syndicates agent-ready catalogs to ChatGPT, Gemini, Copilot (2026-04)

- [commercetools](https://commercetools.com/products/agenticlift): AgenticLift makes catalogs and checkout transactable in AI channels

- [Firmly](https://www.firmly.ai/merchants): One merchant connection to agent channels across UCP, ACP, MCP and AP2

- [Henry Labs](https://docs.henrylabs.ai/v1/sdk/server/getting-started/introduction): SDK for product search, multi-merchant carts and hosted/headless checkout

- [Rye](https://rye.com/docs/api-v2/): Universal checkout API turning any product URL into an agent order

- [Salesforce](https://www.salesforce.com/news/stories/agentforce-commerce-announcement/): Agentforce Commerce connects merchant catalogs to ChatGPT and Gemini (2026-06)

- [Shopify](https://help.shopify.com/en/manual/online-sales-channels/agentic-storefronts/requirements): Agentic storefronts on by default; UCP checkout in Copilot and Gemini

- [Cloudflare](https://developers.cloudflare.com/ai-crawl-control/features/pay-per-crawl/what-is-pay-per-crawl/): Pay per crawl: sites charge AI crawlers via HTTP 402 (closed beta) (2026-07)

- [Microsoft Publisher Content Marketplace](https://about.ads.microsoft.com/en/blog/post/february-2026/building-toward-a-sustainable-content-economy-for-the-agentic-web): Pilot marketplace paying publishers for content used to ground AI answers (2026-02)

- [TollBit](https://www.arcxp.com/2026/03/23/arc-xp-partners-with-tollbit-to-help-publishers-monitor-control-and-monetize-ai-bot-traffic/): Bot paywall and agent sites so publishers license and charge AI access (2026-03)

- [Adyen](https://www.adyen.com/press-and-media/adyen-agentic): Adyen Agentic: Feed, Cart and Payments APIs for selling via AI platforms (2026-06)

- [Checkout.com](https://www.checkout.com/newsroom/checkout-com-returns-to-full-year-profitability-and-surpasses-300b-in-volume-as-it-positions-for-the-era-of-agentic-commerce): Processor live on UCP and ACP, supporting Visa and Mastercard agent rails (2026-02)

- [Fiserv](https://investors.fiserv.com/news-releases/news-release-details/fiserv-collaborates-visa-accelerate-agentic-commerce): Multi-protocol agent acceptance for merchants via Visa TAP and Agent Pay (2025-12)

- [Klarna](https://www.klarna.com/international/press/klarna-backs-googles-universal-commerce-protocol-ucp-to-enable-agentic/): Backs UCP and AP2; product protocol and BNPL inside agent checkouts (2026-02)

- [PayPal](https://developer.paypal.com/agent-ready/overview): Agent Ready and Store Sync let merchants sell in ChatGPT and Gemini (2026-10)

- [Square](https://squareup.com/us/en/press/claude-chatgpt-integrations): Puts sellers' live menus and ordering in ChatGPT, Claude and Ask Maps (2026-07)

- [Stripe](https://stripe.com/use-cases/agentic-commerce): Agentic Commerce Suite for sellers plus MPP/x402 machine payments

- [Worldpay](https://worldpay.com/en/agentic-commerce): Now Global Payments; ChatGPT ACP partner with agent detection and MCP

- [Lago](https://github.com/getlago/lago): Open-source metering and billing with LLM token SDKs and an MCP server

- [Metronome](https://stripe.com/newsroom/news/stripe-completes-metronome-acquisition): Usage billing engine behind Stripe LLM token billing; Stripe-owned 2026 (2026-01)

- [Nevermined](https://nevermined.ai/docs/development-guide/nevermined-x402): x402 facilitator adding credits, subscriptions and dynamic pricing

- [Orb](https://www.adyen.com/en_GB/knowledge-hub/why-adyen-acquired-orb): Usage billing for tokens, credits and outcomes; acquired by Adyen 2026 (2026-10)

- [Paid](https://paid.ai/blog/paid-raises-21-6-million-seed-round): Outcome-based billing, cost tracking and ROI proof for AI agent makers (2025-09)

- [Polar](https://polar.sh/docs/features/usage-based-billing/ingestion-strategies/llm-strategy): Merchant-of-record billing that meters LLM tokens into usage pricing

## Paid resources for agents

- [Agentverse (Fetch.ai)](https://docs.agentverse.ai/documentation/getting-started/overview): Registry where agents list services others discover and can pay to use

- [Olas Mech Marketplace](https://olas.network/): Onchain market where agents buy AI tasks from other agents, paid per request (2026-11)

- [Virtuals Protocol (ACP)](https://www.virtuals.io/): Market where agents hire and pay other agents, with onchain escrow per job

- [Apify](https://docs.apify.com/agents/payments): Scraper marketplace; agents prepay runs with x402, MPP or Skyfire tokens

- [Bitrefill](https://github.com/bitrefill/agents/blob/main/skills/bitrefill/references/touchpoints/x402.md): Gift cards, top-ups and eSIMs agents can buy with USDC over x402, no account

- [Browserbase](https://docs.browserbase.com/integrations/x402/introduction): Headless browser sessions billed by the hour through x402 and MPP gateways

- [Exa](https://exa.ai/docs/integrations/payments/x402/quickstart): Neural web search; /search and /contents payable per call over x402 and MPP

- [Firecrawl](https://www.coinbase.com/developer-platform/discover/case-studies/firecrawl): Web scraping API with a dedicated x402 search endpoint for keyless agents

- [Nansen](https://docs.nansen.ai/getting-started/agentic-payments): Onchain analytics API payable per call via x402 (Base, Solana) or MPP

- [Parallel Web Systems](https://docs.parallel.ai/integrations/agentic-payments): Web research APIs sold keyless through a gateway accepting MPP and x402

- [Tavily](https://docs.tavily.com/documentation/machine-payments/x402): Agent search API with a keyless x402 endpoint at $0.01 per query on Base

- [BlockRun](https://blockrun.ai/docs): Pay-per-request access to ~90 LLMs plus media and data, settled in USDC via x402

- [Cloudflare AI Gateway](https://developers.cloudflare.com/ai-gateway/features/machine-payments/): AI Gateway now lets agents pay for model inference per request over x402 (2026-09)

- [OpenRouter](https://stripe.com/newsroom/news/stripe-agrees-to-acquire-openrouter): Router for 400+ models; Stripe agreed to acquire it in August 2026 (2026-08)

- [Vercel AI Gateway](https://vercel.com/docs/ai-gateway): One endpoint for hundreds of models at list price, with budgets and fallbacks

- [AgentCash (Merit Systems)](https://merit.systems/developers): One USDC balance that pays thousands of x402 APIs; Merit also runs x402scan

- [Coinbase x402 Bazaar](https://docs.cdp.coinbase.com/x402/buyer/discover-services): Discovery index of x402 endpoints, auto-listed after their first settlement

- [Composio](https://composio.dev/instant): Tool platform; Instant bills paid tools per call from a balance at 0% markup

- [MPP services directory](https://mpp.dev/api/services): Stripe/Tempo catalog of MPP-payable services: 139 services, 1,604 endpoints (2026-11)

- [AIsa](https://aisa.one/llms.txt): The resource layer for AI agents: 5,000+ APIs and 110+ models behind one key, pay as you go

- [Pay.sh](https://solana.com/news/solana-foundation-launches-pay-sh-in-collaboration-with-google-cloud): Solana Foundation gateway selling Google Cloud and community APIs over x402/MPP

## Trust, identity & risk

- [Akamai (Agentic security)](https://www.globenewswire.com/news-release/2026/06/15/3311619/0/en/akamai-unveils-agentic-security-framework-to-power-trusted-ai-driven-interactions-and-commerce.html): Edge framework verifying agents and the humans behind them before they act (2026-06)

- [Cloudflare Web Bot Auth](https://developers.cloudflare.com/bots/reference/bot-verification/web-bot-auth/): Signed HTTP requests that let sites verify which agent is calling (2026-10)

- [DataDome (Agent Trust)](https://datadome.co/solutions/agentic-commerce/): Bot defense that separates legitimate shopping agents from malicious automation

- [HUMAN Security (AgenticTrust)](https://www.humansecurity.com/applications/agentic-ai/): Scores agent traffic and lets merchants decide which agents may check out

- [AstraSync](https://astrasync.ai/developers): Agent passports with permission limits and trust scores, anchored onchain

- [Baselayer (KYA)](https://baselayer.com/know-your-agent/): Business-identity network extended to verify agents acting for companies

- [Experian Agent Trust](https://www.experianplc.com/newsroom/press-releases/2026/experian-announces-agent-trust-to-power-trusted-ai-driven-commer): Credit bureau's service registering agents and linking them to verified owners (2026-04)

- [Persona (Know Your Agent)](https://withpersona.com/solutions/know-your-agent/): Identity platform tying AI agents back to verified humans and businesses

- [Proof (x401)](https://www.proof.com/blog/proof-launches-x401-giving-ai-agents-a-way-to-prove-who-they-represent---and-what-theyre-authorized-to-do): x401 identity wallet; agents present verified claims, optionally paid via x402

- [Prove Verified Agent](https://www.prove.com/blog/prove-verified-agent-secure-agentic-commerce): Binds a verified consumer identity and consent to each agent transaction (2025-10)

- [Trulioo (KYA)](https://www.trulioo.com/products/kya-verification): Know Your Agent checks that issue each agent a Digital Agent Passport

- [World AgentKit](https://world.org/blog/announcements/now-available-agentkit-proof-of-human-for-the-agentic-web): Proof-of-human credentials for agents, shipped as an x402 extension (2026-03)

- [Magentic Marketplace (Microsoft Research)](https://www.microsoft.com/en-us/research/blog/magentic-marketplace-an-open-source-simulation-environment-for-studying-agentic-markets/): Open simulator testing how buyer agents fail under manipulation and bias (2025-11)

- [x402r (BackTrack)](https://www.x402r.org/): Escrow, refunds and arbiter-based disputes layered on top of x402 (beta)

- [Forter (Agentic Commerce Engine)](https://www.prnewswire.com/news-releases/forter-turns-the-ai-shopping-agent-surge-into-a-secure-revenue-channel-for-merchants-302906333.html): Fraud engine that turns agent-initiated orders into approvable, trusted sales (2026-10)

- [Riskified (AI Agent Approve)](https://www.riskified.com/blog/fraud-detection-ai-agent/): Chargeback-guaranteed fraud screening tuned for orders placed by AI agents (2025-08)

- [Sardine](https://www.sardine.ai/whitepapers/rethinking-fraud-prevention-for-agentic-commerce): Fraud and compliance platform mapping risk and liability in agent payments

- [Signifyd](https://www.signifyd.com/spark/): Commerce fraud protection with guidance and controls for agent purchases

- [t54 Trustline](https://www.t54.ai/trustline): Real-time risk engine that scores agent payments before x402 settlement