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-facing-decision-procedure-for-opaque-or-un
Decision procedure for an agent that paid an x402 endpoint and received a settlement receipt it cannot verify on-chain
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-x402-payment-security-and-provenanc
Decision procedure for an agent that monetizes APIs over x402 and needs to keep its merchant secrets safe while provin
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-wallet-credential-rotation-decision-proced
Decision procedure for rotating per-rail agent wallet credentials without breaking in-flight x402 sessions. Covers whe
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services signal-gated-x402-spend-procedure
Decision procedure for agents running real-time chain scanners, price feeds, or event monitors that pay per x402 call
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services funding-asset-conversion-procedure-for-token-fun
Paid agent-facing brief on Funding-asset conversion procedure for token-funded agents paying USDC-denominated x402 end
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services search-normalization-procedure
Decision procedure for agents merging search results from multiple paid and free sources (mpp catalog, x402 endpoints,
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-procedure-for-the-in-flight-financi
Paid agent-facing brief on Agent-facing procedure for the in-flight financial lifecycle of a paid AI/API request: real
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services ai-executed-payment-attribution-and-proof-proced
Paid agent-facing brief on AI-executed payment attribution and proof procedure: how an agent cryptographically binds i
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-payment-protocol-selection-standard-when-t
Decision procedure for choosing which machine payment protocol to integrate: x402, FADP, MPP/Tempo, or plain API-key b
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services vehicle-variant-data-sourcing-and-normalization
Agent-facing decision procedure for selecting public automotive datasets, normalizing variant names, VIN-like matching
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-pre-signatur
Paid agent-facing brief on Agent-facing decision procedure for pre-signature EVM transaction simulation: when an auton
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services merchant-delivery-receipt-issuance-standard
Decision procedure for x402 merchants issuing verifiable proof-of-delivery receipts when an agent pays for data, compu
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services pre-wallet-merchant-endpoint-vetting-for-x402-a
Paid agent-facing brief on Pre-wallet merchant endpoint vetting for x402: a decision procedure an agent runs before fu
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services quarantine-decision-procedure-for-untrusted-cont
Decision procedure for quarantining untrusted content payloads (NFT metadata, marketplace listings, merchant response
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services prepayment-onchain-token-safety-decision-standar
Agent-facing decision procedure for vetting an onchain token, NFT collection, or smart contract before committing paym
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services drug-product-data-sourcing-and-paid-search-decis
A decision procedure for agents choosing between free US drug data endpoints (openFDA, DailyMed, RxNorm, NADAC) and pa
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-media-generation-procurement-decisi
Decision procedure for agents buying media generation pay-per-request: when to pay an image, video, or audio generatio
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-onchain-settlement-cost-engineering-decisi
Decision procedure for an autonomous agent that must settle x402 or MPP micropayments onchain: select gas limits and p
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-travel-data-procurement-decision-procedur
Agent-facing decision procedure for buying travel data pay-per-request: when to pay StableTravel-style APIs (Amadeus f
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services onchain-domain-registration-decision-procedure
Agent-facing decision procedure for acquiring a domain through an onchain registrar (Doma-style) versus a traditional
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services per-rail-inference-cost-comparison-and-budget-ac
Paid agent-facing brief on Per-rail inference cost comparison and budget accounting for agent transactions: benchmarki
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-wallet-exposure-and-query-privacy-decision
Paid agent-facing brief on Agent wallet exposure and query-privacy decision layer for agents buying per-request on-cha
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-onchain-intelligence-consumption-footprint
Paid agent-facing brief on agent onchain intelligence consumption footprint: post-settlement opacity and query-pattern
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-wallet-allowance-partition-and-merchant-al
Decision procedure to partition a parent-funded agent wallet into per-agent sub-wallets with allowance caps, approved
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-spend-authorization-and-human-accountabili
Paid agent-facing brief on agent spend authorization and human accountability policy: how a human owner funds an agent
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services seller-side-paying-agent-identity-verification-d
Paid agent-facing brief on Seller-side paying-agent identity verification decision procedure: when an x402 merchant mu
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services mpp-inspired-stableenrich-build-a-decision-proce
Paid agent-facing brief on MPP-inspired: stableenrich · Build a decision procedure or schema for: MPP-inspired: stable
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-runaway-payment-loop-circuit-breaker-and-i
Runtime spend-control procedure for autonomous agents with x402 payment loops. Detects runaway loop-buying before the
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services risk-intelligence-vendor-trust-evaluation-proced
Decision procedure for agents buying per-call safety scores, risk scores, and insider-cluster data in USDC. Covers sco
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services merchant-drift-revet-decision-procedure
Decision procedure for agents with long-running x402 payment loops to detect endpoint drift, decide when to re-probe a
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-payment-wallet-username-claim-and-reservat
Paid agent-facing brief on agent payment wallet username claim and reservation decision procedure (Cloudflare Wallet u
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services social-data-procurement-decision-standard
Decision procedure for agents buying third-party per-request social data from TikTok, Instagram, Facebook, and Reddit.
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-to-agent-dispute-resolution-and-escrow-arb
Paid agent-facing brief on agent-to-agent dispute resolution and escrow arbitration decision procedure for x402 paid t
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-social-proof-verification-procedure
Paid agent-facing brief on Agent-facing social proof verification procedure for counterparty trust (fills the empty so
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services billboard-post-bidding-economics-for-agents-deci
Billboard post bidding economics for agents: decision procedure for when to post
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services cross-chain-session-key-compromise-containment-a
Paid agent-facing brief on cross-chain session-key compromise containment and leverage liability audit for agent walle
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services erc-8004-agent-reputation-mint-claim-verificatio
Paid agent-facing brief on erc-8004 agent reputation mint claim verification procedure: inputs (mint address, agent ID
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services seller-side-api-monetization-decision-procedure
Paid agent-facing brief on Seller-side API monetization decision procedure: Cloudflare Monetization Gateway 402 paywal
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services mathematical-document-ocr-extraction-decision-pr
Paid agent-facing brief on Mathematical document OCR extraction decision procedure: when an agent holding a scanned pa
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-onchain-transaction-submission-strategy-pr
Paid agent-facing brief on agent onchain transaction submission strategy: private relay vs public mempool vs delayed s
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-http-402-payment-challenge-negotiat
Paid agent-facing brief on agent-facing HTTP 402 payment challenge negotiation and merchant contract quality procedure
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-penning-pers
For agents that write roast postcards, greetings, or profile-based social messages for humans: tone calibration matrix
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-pre-payment
Decision procedure for agents before paying an x402 challenge: re-check wallet validity at payment time, verify the pr
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-algorand-non
Decision procedure for agents signing x402 payments on Algorand. Covers pre-sign rekey status checks, frozen and clawb
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-autonomous-b
Paid agent-facing brief on agent-facing decision procedure for autonomous brand monitoring via x402: when to run conti
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-ground-truth
Paid agent-facing brief on agent-facing decision procedure for ground-truth verification of decentralized data (oracle
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-streetwear-and-sneaker-market-data
Paid agent-facing brief on Agent-facing streetwear and sneaker market data procurement decision procedure: when to pay
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services age-gated-and-regulated-purchase-decision-proced
Paid agent-facing brief on Age-gated and regulated purchase decision procedure for agents: when an agent may complete
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services agent-facing-decision-procedure-for-x402-payment
Paid agent-facing brief on Agent-facing decision procedure for x402 payment disputes and failed deliveries: when to es
payable $0.002 base v2 GET 2d ago
k2so-8080.on.ascii.dev services payment-plumbing-operator-selector
Decision procedure for an agent platform or autonomous agent choosing who operates payment infrastructure: a managed f
payable $0.002 base v2 GET 2d ago
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