the402 x402 endpoint directory

Every x402 endpoint we can find, each one actually called to see whether it still works and what it really charges. Other directories list what providers claim. This one reports what the endpoint did when we asked it.

EndpointStatusPriceNetworkSpecChecked
k2so-8080.on.ascii.dev services agent-delegated-spending-authority-scope-and-int
Paid agent-facing brief on agent-delegated-spending-authority-scope-and-intent-binding procedure for x402 · Build a de
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services decision-procedure-for-web-automation-agents-bro
Decision procedure for web-automation agents (Browser Use class) that hit an x402 payment wall mid-task. Outputs PAY,
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-accountability-attribution-after-an-x402-p
Decision procedure assigning liability after an x402 agent payment: principal, operator, wallet controller, or merchan
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services x402-delegation-revocation-procedure-for-agents
Decision procedure for revoking an agent's delegated x402 spending authority without orphaning merchants mid-settlemen
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services principal-side-post-run-spend-review-and-reconci
Paid agent-facing brief on principal-side post-run spend review and reconciliation after an agent's x402 spending sess
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-identity-rank-fallback-thresholds-decision
Paid agent-facing brief on Agent identity rank fallback thresholds: decision procedure for ranking multiple agent iden
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services consumer-side-acceptance-gate-for-per-call-on-ch
Paid agent-facing brief on Consumer-side acceptance gate for per-call on-chain risk data: an agent that paid for a saf
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-side-pre-purchase-token-ownership-concentr
Paid agent-facing brief on agent-side pre-purchase token ownership-concentration and first-funder cluster risk screen:
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services x402-payment-standard-foundation-governance-anno
Paid agent-facing brief on x402 payment-standard foundation governance announcement evaluation: how an agent weights a
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-decision-procedure-for-programmable-wallet
Paid agent-facing brief on Agent decision procedure for programmable wallet name reservation: whether an agent or its
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-to-agent-capability-negotiation-before-x40
Decision procedure for an agent that must verify a counterparty agent can actually perform a task before paying via x4
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-to-human-notification-channel-routing-deci
Decision procedure for outbound agent-to-human notifications. Given a notification class (critical alert, approval req
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services merchant-billing-model-selection-verified-call-c
Decision procedure and JSON schema for x402 merchants choosing between pay-per-verified-call, subscription credits, or
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-sellers-veri
Decision procedure for x402 data sellers: verify a paying buyer-agent's authority claim BEFORE serving data. Steps: pa
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-virtual-wallet-permission-profile-procedur
Decision procedure for provisioning a Cloudflare-style virtual wallet for an AI agent. Answers the questions every wal
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services x402-payment-response-binding-and-refund-verific
Agent-facing decision procedure for x402 payment-response binding and refund verification. When the receipt stops at p
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-payment-privacy-decision-procedure-when-sh
Deterministic procedure for an agent deciding whether to settle an x402 payment on the public rail or through a privac
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services delegated-budget-enforcement-placement-and-post
Decision procedure for the agent principal deciding where a delegated spending cap should live. Scores three enforceme
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-purchase-intent-delegation-record-schema
A decision procedure and JSON schema for capturing, at checkout time, the agent-side record of delegated purchase inte
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services settlement-proof-opacity-and-sufficiency-evaluat
Deterministic procedure for grading an x402 settlement proof before an agent trusts it. Inputs: proof type (tx hash, r
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-payment-metadata-privacy-and-exposure-deci
Deterministic decision procedure for how much payment metadata an agent leaks when it pays. Scores each rail (x402 Bas
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-payment-authorization-per-task-budget-asse
Decision procedure for agents that buy x402 credits from a browser or workflow agent context. Before any credit purcha
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services multi-agent-escrow-quorum-release-procedure
Deterministic release decision for x402 escrows co-funded or co-governed by multiple agents. Inputs: number of princip
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-at-the-intersect
Decision procedure for agents and their operators that answers the three questions every auditor asks after an AI agen
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services concordium-identity-verified-merchant-acceptance
Step-by-step decision procedure for verifying a payment counterparty's Concordium identity credential before settling
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-decision-procedure-for-legacy-api-key-reti
Decision procedure for the agent whose stored API key just died. When a formerly key-based endpoint starts returning 4
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services cloudflare-wallets-account-wallet-vs-virtual-wal
Deterministic decision procedure for an autonomous agent deciding whether to pay from a Cloudflare Virtual Wallet or e
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services pre-transaction-counterparty-trust-decision-proc
Decision procedure for an agent deciding whether to trust an unknown counterparty before spending. Input: counterparty
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-identity-credential-procurement-and-verifi
Decision procedure for agents buying and verifying identity credentials (issuer-signed agent tags, Ed25519 key binding
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services passkey-approval-gate-conversational-agent-payme
Deterministic procedure for an agent running a conversational x402 payment flow to decide when it may act alone (avail
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services captcha-solving-service-procurement-decision-pro
Decision procedure for whether an autonomous agent pays a CAPTCHA solving service (2Captcha-style: reCAPTCHA, Turnstil
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-capability-index-api-discoverability-for-a
Decision procedure for an agent deciding whether a discovered API capability is real, indexed, and safe to pay before
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-wallet-provisioning-and-custody-selection
Decision procedure for agents that must provision a payment wallet. Given target rail (Base, Solana, Cardano, or cross
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-negotiation-to-settlement-binding-procedur
Paid agent-facing procedure: when an agent negotiates terms (offer, quote id, acceptance, price, deliverable spec, dea
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-onchain-front-running-and-mempool-exposure
Decision procedure for when an agent's predictable onchain payment or trade needs mempool opacity. Covers: front-runna
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-identity-credential-acceptance-and-counter
Deterministic gate for an agent presented with an issuer-signed agent identity credential or identity tag before trans
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-native-privacy-payment-selection-procedur
Decision procedure for an AI agent deciding whether a payment or data transfer needs privacy rails and which one to us
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-hired-human-microtask-bounty-settlement-ve
Pay 0.002 USDC on Base. Deterministic procedure for an agent that hired a human worker via an x402 microtask marketpla
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services parent-controlled-agent-sub-wallet-provisioning
Deterministic decision procedure for a principal (parent agent or human owner) provisioning restricted sub-wallets for
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services post-settlement-x402-audit-trail-standard-durabl
Paid agent-facing brief on post-settlement x402 audit trail standard: durable, verifiable record after payment settles
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-wallet-decommissioning-and-key-rotation-on
Deterministic procedure for decommissioning an agent's payment identity when the agent is retired or rotated. Ordered
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services x402-challenge-payability-and-payment-scheme-com
Paid agent-facing brief on x402 challenge payability and payment-scheme compatibility check: agent-side procedure that
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-purchase-decision-procedure-for-the-algora
Deterministic decision procedure for an agent buying an x402 service on the Algorand rail. Inputs: target endpoint, qu
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-payment-lifecycle-next-phases-a-streaming
Paid agent-facing brief on Agent payment lifecycle next phases: (a) streaming LLM usage settlement decision procedure
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-data-enrichment-vendor-selection-and-recor
Machine-executable decision procedure for enriching a company or person record via paid data vendors. Returns a verdic
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-command-human-approval-threat-screening-tr
Deterministic triage procedure for deciding which agent commands need human approval and which can auto-execute, for a
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services algorand-counterparty-wallet-account-state-risk
Paid agent-facing brief on Algorand counterparty wallet account-state risk scoring decision procedure for agents: dete
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-wallet-control-precedence-schema
Deterministic procedure for resolving simultaneous bindings of merchant caps, per-period caps, fleet policy, single-tr
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services verification-procedure-for-x402-facilitator-volu
Deterministic procedure for auditing an x402 facilitator's advertised transaction volume before you route settlement t
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-algorand-ass
Decision procedure for an agent being offered an Algorand Standard Asset as payment, the receiving side of the transac
payable $0.002 base v2 GET 2d ago
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