Base Risk, BTC15 & x402 Buyer/Seller Intelligence API
One 0.01 USDC first-purchase decision packet for Base risk or BTC15 market bots. Each paid response is designed to return machine-readable routing, priority queues, avoid/review signals, source status, and the next product to buy.
Canonical x402 service URL: https://x402.xx402.icu. Data packets only; not financial, legal, sanctions, compliance, or investment advice.
How agents buy
- 01
Probe
Call any paid endpoint without payment and require HTTP 402 plus a parseable Payment-Required header.
- 02
Inspect
Read catalog.json, purchase-index.json, openapi.json, .well-known/x402, MCP, and settlement.json before spending.
- 03
Pay
Use the advertised Base USDC x402 terms, retry the same resource with the payment header, then cache the decision packet.
- 04
Route
Use pass/watch/review/avoid fields, priority queues, source_status, and best_next_products to decide whether another packet is worth buying.
Marketplace listing fit
x402 and Bazaar-style directories usually need a stable server URL, resource paths, price, network, asset, payTo, input/output schemas, examples, settlement evidence, and quality signals. This server exposes those fields as JSON so crawlers and buyer agents can rank it without manual signup.
Root xx402.icu is reserved for other projects; use this subdomain for all x402 listings.
Machine-readable surfaces
These links are the public discovery layer used by x402scan, OpenAPI clients, MCP clients, and other marketplaces.
First purchase
Base actionable first-purchase risk decision packet
It bundles the broadest Base risk context and returns buyer_execution_plan plus best_next_products so a bot can choose, budget, or stop the next paid call instead of guessing.
okgenerated_atactionable_decisionbuyer_execution_planpriority_queuerisk_breakdownurgent_reviewavoid_queuePaid response shape
Shape example only; live paid responses contain current public Base data and may differ by query and source availability.
actionable_decisionbuyer_execution_planpriority_queuerisk_breakdownurgent_reviewavoid_queuebest_next_productssource_statussourcesSample decision: review / medium. Next product: /api/base-liquidity-exit-risk-feed.
Discovery and verification
A bot can preflight with 402, inspect these manifests, then pay exactly once for the first JSON decision packet.
Marketplace profile
Start with the x402 buyer market scout, seller visibility/CDP Bazaar readiness audit, one broad Base risk decision packet, or a BTC15 microstructure, execution-friction, threshold-alert, calibration-slice, or recent-tape probe, then use intent routes and playbooks to decide whether to buy deeper checks or stop.
x402 buyer market scoutx402 service discoveryx402 seller visibility auditx402 Bazaar listing readinessagentic marketplace intelligenceBase token risk APIx402 DeFi risk dataagentic trading guardrailService fit
The service sells decision-shaped public-data packets with source status, queues, next-product routing, and explicit stop conditions instead of raw data dumps.
Profile JSON: /marketplace-profile.json
Quality report
Free buyer trust and service-quality report for the paid Base onchain risk and BTC15 market microstructure x402 API.
Score: 88/100. Profile JSON: /quality-report.json
Watchlist
Rows with server_partial_or_error should be watched before high-stakes automation. 402 and client/retired-path 4xx are separated from server/partial errors.
Starter pack
Free copy-ready starter URLs for buyer agents that want to probe, pay, evaluate, and stop without browsing all paid resources.
First probe: /api/x402-seller-visibility-audit
Copy-ready probe
https://x402.xx402.icu/api/x402-seller-visibility-audit?origin=https%3A%2F%2Fx402.xx402.icu&payTo=0xfBDB0Ad415e95c4843FD872FAc967459572910f1&query=x402+buyer+market+scout+Base+BTC15&resource_path=%2Fapi%2Fx402-buyer-market-scout&network=eip155%3A8453&limit=5
Budget rule
Do not buy follow-ups unless the paid JSON includes required acceptance keys and a review/avoid/next-product reason.
MCP preflight tools
Free MCP metadata tools expose starter pack, quality report, marketplace profile, buyer guide, and purchase index before payment.
Tool list: /.well-known/mcp.json#free_tools
Paid MCP tools
The paid tool list remains limited to the current 40 x402-gated API resources, so free metadata is not counted as paid inventory.
Agent card
Agent skills now include both free preflight discovery tools and paid purchase-ladder skills.
Buyer value contract
Help an autonomous buyer decide whether a 0.01 USDC Base risk or BTC15 microstructure packet is worth buying before it spends on deeper checks.
The paid JSON response includes a pass/watch/review/avoid style decision or a clearly named product decision object.The response includes source_status so the buyer can downgrade or retry stale or partial data.The response includes priority/review/avoid queues or best_next_products so the buyer can stop or buy follow-ups deterministically.Cost control
The avoided bad route, unsafe approval, thin-liquidity trade, or low-quality DeFi allocation would cost more than the query budget.
This is not a return promise and not financial, legal, sanctions, compliance, tax, or investment advice.
Integration playbooks
Copy a playbook from bot-buy.json to probe, pay, evaluate, and stop without browsing all resources.
Integration playbooks
Audit whether an x402 service is visible to machine buyers and what to fix before promotion.
Use for sellers before spending time on promotion; no login, signing, private keys, or KYC are required by this seller API.
Choose the best x402 paid endpoint for a buyer task by comparing live Bazaar results with this server's own catalog.
Use before spending across unfamiliar x402 services; stop if Bazaar is unavailable and external comparison is required.
Inspect one x402 resource URL before paying it, enforcing budget, network, asset, and metadata policy.
Use as a paid preflight guard before a buyer wallet sends a paid retry. This service does not pay the target resource.
Choose one cheap packet before deciding whether any deeper Base risk checks are needed.
Use this as the default first call for unknown token, wallet, DeFi, pool, transfer, or routing tasks.
Gate a token before a swap, route-size increase, listing decision, or automated alert.
Block or escalate automated action when the paid response returns review or avoid with supporting queues.
Buyer intent routes
I need one broad Base risk decision before choosing deeper paid checks.
Start here when the buyer agent has a token, wallet, protocol, pool, or transfer question and wants one cheap routing packet first.
I need to decide whether a Base token is safe enough to route, list, alert on, or block.
Use before automated swaps, listing checks, token alerts, or route-size increases.
I need liquidity depth, route-size guidance, and pair concentration before a swap or routing decision.
Use when a buyer agent needs to cap order size, avoid thin pools, or choose whether to buy pair-level checks.
I need to decide whether wallet approvals or a specific owner-spender allowance should be reviewed or revoked.
Use before trusting a wallet, suppressing approval alerts, or routing wallet actions through automation.
I need a Base DeFi allocation, yield, outflow, or fee-quality decision before moving or keeping funds.
Use before treasury allocation changes, yield-pool sizing, withdrawal suppression, or protocol exposure changes.
I need to choose whether a Base stable asset or bridge asset is acceptable for routing, treasury, or yield checks.
Use before stablecoin routing, treasury movement, pool selection, or bridge-asset exposure changes.
I need to screen new or stressed Base pools before listing, alerting, or routing exposure.
Use for launch monitors, hot-pool checks, pair anomaly review, and listing/routing guardrails.
I need to decide whether large transfers, mint/burn flow, or counterparty concentration need review.
Use for whale-flow monitors, transfer anomaly alerts, counterparty screening, and token-flow guardrails.
Bot purchase ladder
- 01
Base actionable first-purchase risk decision packet
Route the first paid Base risk purchase into pass, watch, review, or avoid using pool-launch risk, stable-asset stress, recent contract-control events, protocol outflow risk, yield-pool allocation risk, protocol fee-quality risk, promoted-token signals, large-transfer flow, DEX pair anomalies, token candidate screening, and DeFi/yield flags.
- 02
x402 buyer market scout packet
Use scout_decision, buyer_execution_plan, our_service_fit, external_market, and market_gap to decide whether to buy one of this server's packets, compare external Bazaar results, or stop.
- 03
x402 paid resource preflight packet
Use preflight_decision, payment_terms, budget_check, resource_metadata, and buyer_retry_plan to decide whether a target URL is buyable, within budget, and machine-readable before sending a paid retry.
- 04
x402 seller visibility audit packet
Use visibility_decision, discovery_checks, cdp_bazaar_readiness, bazaar_visibility, metadata_quality, and action_plan to decide what to fix before trying to attract x402 buyers.
- 05
Base liquidity exit risk decision packet
Route Base tokens, pools, promoted campaigns, pair anomalies, holder concentration, contract-control evidence, mint/burn flow, and large-transfer signals into pass, watch, review, or avoid.
- 06
Base DeFi allocation risk decision packet
Route Base-chain DeFi exposure into pass, watch, review, or avoid using protocol TVL, fee-quality, stablecoin concentration, public incident history, and yield-pool risk.
- 07
Base token pre-trade safety decision packet
Route a Base token into pass, watch, review, or avoid before trade execution using top-pair depth, route safety, transfer-flow anomalies, holder concentration, and contract-control evidence.
- 08
Base wallet approval exposure decision packet
Route a wallet token approval surface into pass, watch, review, or avoid using recent approval logs, current allowance status, spender account state, unlimited approvals, high-value allowance estimates, and source status.
- 09
BTC15 live market microstructure packet
Use btc15_decision, latest_snapshot, window_stats, liquidity, trade_pressure, and quality_flags to decide whether the current BTC15 market state is calm, watch-worthy, or too stale/unstable for automation.
- 10
BTC15 execution friction and ticket ladder packet
Use friction_decision, ticket_ladder, execution_guardrails, freshness, and quality_flags to decide whether a $5/$10/$20/$50/$100 style probe is feasible, too thin, stale, or unsuitable for automation.
- 11
BTC15 threshold pressure alert packet
Use threshold_alert.alert_active, score_0_100, target_side, direction_hint, and reasons to decide whether the current BTC15 market is close enough to the BTC threshold to escalate.
- 12
BTC15 resolved calibration slice packet
Use signal_buckets, label_balance, quality_summary, and sample_rows to check whether final-window BTC gap, book side, and pressure-side buckets are balanced enough for a downstream calibration workflow.
- 13
BTC15 recent market tape packet
Use markets, quality_summary, and tape_decision to inspect recent winners, snapshot density, final/latest book state, BTC gap, and data quality before calibration or monitoring.
- 14
BTC15 resolved feature sample packet
Use labeled_markets, feature_dictionary, and quality_summary to sanity-check model features, verify label balance, and test whether BTC gap, book pressure, slippage, and trade imbalance fields are usable before buying broader context.
- 15
Base promoted token campaign decision packet
Route currently promoted Base tokens into pass, watch, review, or avoid using campaign sources, boost/ad intensity, market support, liquidity weakness, paid order activity, contract-control probes, and source status.
- 16
Base large transfer decision packet
Route recent large transfers into pass, watch, review, or avoid using estimated USD size, mint/burn activity, contract counterparties, price-hint availability, token-source coverage, and transfer-log source status.
All paid data products
Base actionable first-purchase risk decision packet
Agents, token screeners, trading guards, and risk dashboards that need one paid first-purchase Base decision packet before choosing deeper checks.
x402 buyer market scout packet
Autonomous buyers, agent wallets, marketplace crawlers, and developers that need to choose which x402 paid resource to buy for a task before spending across multiple services.
x402 paid resource preflight packet
Autonomous x402 buyers, agent wallets, MCP gateways, and marketplace crawlers that need to inspect one paid resource before deciding whether to spend.
x402 seller visibility audit packet
x402 builders, API sellers, marketplace operators, and agent-service teams that need to diagnose why a paid endpoint is or is not visible to machine buyers or CDP Bazaar.
BTC15 live market microstructure packet
Prediction-market bots, BTC15 research agents, execution notebooks, and market microstructure monitors that need a small live packet from the current BTC 15-minute Up/Down market without reading the raw database.
BTC15 execution friction and ticket ladder packet
BTC15 execution notebooks, alerting bots, and market monitors that need a small-ticket UP/DOWN slippage and fillability check without buying a broad market packet or raw order book.
BTC15 threshold pressure alert packet
BTC15 alerting bots and research agents that need a compact target-gap and pressure signal before waking a workflow or buying a broader microstructure packet.
BTC15 resolved calibration slice packet
BTC15 model builders, feature-store agents, calibration notebooks, and research bots that need aggregate hit-rate slices from recent resolved markets instead of a raw historical export.
BTC15 recent market tape packet
BTC15 model builders, market-data crawlers, and monitoring agents that need a small labeled recent-market tape instead of a raw database export.
BTC15 resolved feature sample packet
BTC15 model builders, calibration notebooks, feature-store agents, and research bots that need a small labeled UP/DOWN sample with final-window market features.
Base liquidity exit risk decision packet
Trading guards, token screeners, listing bots, and monitoring agents that need a direct Base liquidity-exit decision before routing exposure.
Base pool launch risk decision packet
Trading guards, pool monitors, listing bots, and risk agents that need a direct Base fresh-pool or hot-pool decision before routing exposure.
Base stable asset risk decision packet
Treasury bots, routing guards, yield monitors, and risk dashboards that need a direct Base stablecoin or bridge-asset routing decision.
Base contract control event decision packet
Trading guards, token screeners, protocol monitors, and risk dashboards that need a direct Base contract-control decision before routing exposure.
Base protocol outflow risk decision packet
Treasury bots, DeFi allocation agents, risk dashboards, and monitoring jobs that need a direct Base protocol outflow decision before moving or keeping funds.
Base yield pool allocation decision packet
Treasury bots, yield agents, vault allocators, and risk dashboards that need a direct Base pool-level allocation decision before placing or keeping funds.
Base protocol fee quality decision packet
Treasury bots, DeFi allocation agents, vault allocators, and protocol monitors that need a direct Base fee-quality decision before setting exposure limits.
Base token watchlist decision packet
Token screeners, launch-review desks, and autonomous agents that need a direct Base token watchlist decision before routing capital or buying deeper single-token checks.
Base wallet watchlist decision packet
Wallet safety tools, monitoring agents, payment routers, and treasury ops that need one Base wallet watchlist decision before trusting, routing to, or monitoring addresses.
Base approval spender risk decision packet
Wallet safety tools, approval monitors, revocation agents, and risk dashboards that need chain-level spender triage before they know which owner wallet to inspect.
Base DeFi allocation risk decision packet
Base DeFi allocation monitors, treasury agents, protocol risk dashboards, and yield-pool prefilters that need a direct routing decision rather than a raw market snapshot.
Base promoted token campaign decision packet
Risk agents, launch-review desks, token screeners, and execution guards that need a direct decision on currently promoted Base tokens before trusting or routing to them.
Base large transfer decision packet
Whale-flow monitors, treasury guards, wallet safety tools, and autonomous agents that need a direct decision on recent large Base ERC20 transfers before alerts, routing, or exposure changes.
Base onchain risk decision packet
Agents, trading guards, and risk dashboards that need one paid Base onchain decision packet before deciding which deeper token, pair, or DeFi checks to buy.
Base token candidate screening decision radar
Base token discovery pipelines, watchlist builders, launch-review desks, and agents that need token candidates plus a direct screening decision before they know which address to diligence.
Base DEX pair anomaly decision radar
Trade routers, pool monitors, token scanners, and risk agents that need a current Base pair anomaly decision queue before deeper pair or token checks.
Base token pre-trade safety decision packet
Pre-trade token safety decisions for execution agents, token screeners, trading guards, and risk routers.
Base token batch screening decision packet
Small token watchlist triage for execution agents, token scanners, launch-review desks, and risk routers comparing several Base token candidates.
Base token diligence packet
Deep single-token diligence packets for Base token screeners and risk desks.
Base wallet safety decision packet
Wallet safety tools, autonomous agents, and risk dashboards that need one Base wallet decision packet before trusting, routing to, or monitoring a wallet.
Base wallet counterparty risk decision packet
Wallet risk engines, transaction monitors, and execution guards that need a direct counterparty-flow decision for one wallet.
Base wallet approval exposure decision packet
Wallet safety tools, revocation agents, and risk dashboards that need a direct approval-exposure decision before trusting or using a wallet.
Base wallet batch safety decision packet
Small wallet watchlist triage for agents and monitoring jobs that need one ranked batch decision before trusting or routing to wallets.
Base allowance revocation decision packet
Owner-spender ERC20 allowance checks for wallet safety tools that need a direct revocation or review decision.
Base address counterparty screening decision packet
Single-address intake decisions for Base wallets, contracts, counterparties, routing targets, and payout or deposit addresses.
Base token liquidity route decision packet
Token routers, trading guards, screeners, and risk monitors that need a direct Base liquidity routing decision before sending orders or alerts.
Base DEX pair routing risk decision packet
Specific Base DEX pool routing decisions for execution agents, token screeners, pool monitors, and risk routers.
Base token flow anomaly decision packet
Recent ERC20 flow anomaly decisions for token risk alerts, market scanners, and trading guards.
Base token holder concentration decision packet
Recent-active holder concentration decisions for token risk engines, market scanners, and trading guards when a full historical holder index is not required.
Base token contract control decision packet
Token contract-control decisions for due diligence agents, token screeners, trading guards, and review queues.