the402 x402 endpoint directory

Decision procedure for an agent facing a contested x402 payment dispute that survived proof exchange. Classifies the d

Decision procedure for an agent whose value is fragmented across systems. Inputs: per-location balance ledger (checkou

Paid agent-facing brief on per-rail fee and settlement-speed ranking procedure for agent x402 settlement: a determinis

Deterministic gate for the agent-stack interop seam: verifying that the agent identity that concluded an A2A negotiati

Paid agent-facing brief on Decision procedure for an agent evaluating a real-world-asset (RWA) issuer's x402 payment r

Deterministic decision procedure for a merchant that wraps an API or MCP tool as an x402 service on Base, deciding whe

Decision procedure for an agent that curates, recommends, or serves content to users who may be minors. Hard gate inpu

Full asset data for one or more slugs (agent-optimized).

What is this agent's reputation actually worth? 92.6% of ERC-8004 feedback on Base is coordinated. This clusters revie

Build a runnable curl command for one operation in an OpenAPI 3.x or Swagger 2.x spec. Locate the operation by operati

Fetch page metadata for a URL: title, description, OpenGraph, Twitter cards, canonical URL, favicon.

List EAS (Ethereum Attestation Service) attestations for an address as recipient, attester, or either, on mainnet/Base

Synthesize a JSON response body for one operation + status code in an OpenAPI 3.x or Swagger 2.x spec. Locate the oper

Recall remembered text by similarity to a query (ranked by cosine similarity), not by exact key. Returns the top-k mat

Decision procedure for agents buying media generation pay-per-request: when to pay an image, video, or audio generatio

A structured gap map of five open niches in Solana x402 agent payments, based on the July roundup and live market sign

Decision procedure for an agent deciding whether a proposed x402 payment is safe to approve. Covers three attack class

Paid agent-facing brief on Agent dispute evidence retention lifecycle: how long an autonomous agent must keep payment,

Decision procedure for an agent holding identity names and inboxes: when to renew a name, when to let it lapse, and ho

Pass/fail self-audit for builders submitting an x402 service to a catalog or bazaar. Checks the failure modes that get

Standard procedure for assembling retained dispute evidence into a cross-rail audit bundle for adjudicators. Covers pa

Decision procedure for an agent holding a payment intent that can be settled via multiple protocols: x402, AP2, or MPP

Paid agent-facing brief on principal-side post-run spend review and reconciliation after an agent's x402 spending sess

Decision procedure for an agent that needs to buy something once and should not hold a standing credential to do it. O

Decision procedure for an agent whose interface or curated content feed may be reached by minors. Classifies exposure

Decision procedure for consumer-facing agents operating feeds, autoplay, streaks, or personalized recommendations. Set

Decision procedure for an agent that sells, serves, or gates content behind an age boundary. Classifies the interactio

Decision procedure for an agent that just settled an x402 payment: classify the outcome into one of five classes (deli

Full asset data for one or more slugs (agent-optimized).

Fetch a bounded feed of newly incorporated active UK companies from Companies House. Filter a 1-60 day window by SIC p

Bounded prediction.markets discovery challenge

European Central Bank reference exchange rates for any past date or date range (business days since 1999-01-04), via f

Enriched quote for an x402 endpoint: probes it unpaid (never pays, SSRF-checked), decodes {price, asset, network, payT

Hourly air-quality data (PM2.5, PM10, ozone, NO2, European/US AQI) for any lat/lon, from the Copernicus CAMS model ser

Independent audit of a Rubric attestation: signature validity, HCS sequence, and direct Hedera mirror-node confirmatio

Korean exchange prices (Upbit, Bithumb) for a single token in KRW

Pass a URL and get the page as clean text — furniture (nav, scripts, ads, footers) stripped, paragraphs preserved — pl

Cached DeFi yield-pool data from DeFiLlama.

Sentiment analysis API — analyze sentiment of text and get a text sentiment score in one call: classifies positive / n

US Stock realtime price for AAPL

One-call market snapshot: BTC/ETH/SOL spot prices with 24h change plus the Crypto Fear & Greed index. The cheapest way

EURC peg monitor — unique combined signal: the official ECB euro reference rate (USD/EUR) versus the live on-chain EUR

Restate an amount from one year in another year's money, for any country in the World Bank consumer-price series (1960

Add business days to a date, or count them between two dates, for ~110 countries. Knows each country's weekend (Friday

Validate an ISIN securities identifier (ISO 6166) and check whether it is valid. Verifies structure and the Luhn check

Token price lookup. Pass coin identifiers as `/v1/defillama/prices/{coins}` (e.g. `coingecko:bitcoin`, `ethereum:0xC02

Current conditions and forecast for any latitude/longitude. Returns present weather plus a 1-7 day daily forecast (tem

Cron expression parser. Takes a 5/6/7-field cron expression or @yearly/@monthly/@weekly/@daily/@hourly macro and retur

BitBooth SSL Info: pay 0.002 USDC, get the SSL/TLS certificate details for any hostname:port — subject, issuer, validi

Scan funding rate arbitrage opportunities across perpetual exchanges