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Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"coin-railz","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
x402 Discovery Ping — x402 payment infrastructure health check. Returns 402 challenge with valid EIP-712 payment requirements — use to verify your x402 client can parse and sign challenges before live payments.
x402 Golden Path — Start Here — START HERE. Pay $0.05 USDC (Base or Solana) to onboard as an agent. Returns a verified payment receipt, your session ID, and 3–5 executable next-service calls with sample arguments you can run immediately. This is a paid onboarding probe — $0.05 confirms your payment stack works end-to-end, then the response tells you exactly what to call next.
Multi-Chain Gas Oracle — Real-time gas prices across all supported networks
Token Metadata — Get comprehensive token metadata and information
DEX Liquidity Analysis — Liquidity depth across Uniswap v3, Curve, Balancer, and Aerodrome. Now includes Robinhood Chain (eip155:4663) via Uniswap v3 subgraph with fee-tier breakdown. Returns best execution venue and available liquidity in USD per pool. Pass { tokenAddress, chain } — use "robinhood" for Robinhood Chain.
Token Approval Manager — Manage and revoke token approvals for security
Token Price Oracle — Token price aggregated from Uniswap v3, CoinGecko, and direct DEX pool queries. Returns current price in USD, 24h change %, 24h volume, and market cap. Pass { symbol } or { address, chain? }.
Deep Token Analysis — Full token dossier: contract audit findings, top-10 holder distribution, liquidity depth across DEXs, and 7-day social sentiment score. Pass any EVM token address or symbol.
Transaction Builder — Build and simulate transactions before execution
Whale Movement Alerts — Track wallets moving >$100K for any EVM chain. Returns recent large transactions with counterparties, USD value, and direction (accumulation vs. distribution). Covers Base, Ethereum, Arbitrum, Polygon.
Batch Quote — Get quotes for multiple token swaps in a single call
Multi-Chain Balance — USDC, ETH, and top-token balances for any wallet across 8 EVM chains + Solana (incl. Robinhood Chain). Returns USD-denominated totals aggregated in one call. Pass { address } — no chain parameter needed.
kind ← A2A Agent Card
name ← A2A Agent Card
summary ← A2A Agent Card
version ← A2A Agent Card
description ← A2A Agent Card
homepageUrl ← A2A Agent Card
publisherUrl ← A2A Agent Card
publisherName ← A2A Agent Card
Derived by Wellknown
Capabilities
Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.
2 mo ago · declared · summary → "Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services."
2 mo ago · declared · description → "Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services."
2 mo ago · declared · publisherName → "Coin Railz"
2 mo ago · declared · publisherUrl → "https://coinrailz.com"
2 mo ago · declared · homepageUrl → "https://coinrailz.com/.well-known/agent-instructions.json"
2 mo ago · declared · version → "1.1.0"
2 mo ago · declared · protocols → ["a2a"]
Trending Tokens Scanner — Top trending tokens by volume momentum across Base, Ethereum, Arbitrum, Polygon, and Robinhood Chain (eip155:4663, Uniswap v3). Returns price change %, volume spike ratio, and DEX trade count. Pass { chain? } — use "robinhood" for Robinhood Chain data.
Portfolio Tracker — Holdings and P&L for any EVM wallet across Base, Ethereum, Arbitrum, and Polygon. Returns current USD value, cost basis, unrealized gains/losses, and 30-day performance. Pass { address }.
Wallet Risk Analysis — On-chain risk score (0–100) for any EVM wallet. Flags mixer exposure, blacklisted counterparties, rug-pull history, concentration risk, and anomalous transfer patterns. Pass { address, chain? }.
AI Trade Signals — GPT-4o powered BUY/SELL/HOLD signal with real live market data (price, volume, buy/sell pressure, liquidity) from DexScreener. Supports all EVM chains + Robinhood Chain (eip155:4663). Pass { token, chain?, timeframe?, riskLevel? }.
Payment Processing — Route any USDC or stablecoin payment across 8 EVM chains + Solana (incl. Robinhood Chain). Returns optimal network for lowest fees, estimated on-chain confirmation time, and payment receipt with txHash.
Smart Contract Security Audit — AI-powered Solidity audit flagging reentrancy, integer overflow, access control gaps, and known CVE patterns. Returns risk rating (Critical/High/Medium/Low) with line-level code findings.
Instant Agent Wallet — Provision a CDP-managed EVM wallet for any AI agent in one call. Returns address, private-key shard (non-custodial), and USDC-ready status on Base. Idempotent — safe to call multiple times.
Agent Wallet Provisioning — Create CDP-managed wallets for AI agents with instant USDC support on Base
Cross-Chain Bridge — Bridge quotes from Across, Stargate, and Hop for any EVM-to-EVM token transfer. Returns best route ranked by cost+speed, estimated output amount, bridge fee, and expected confirmation time.
Agent Identity Ownership Check (KYA) — Know-Your-Agent status lookup for existing ERC-8004 identity ownership, wallet activity, and signatures; no registration or minting
Compliance Consultation — Expert compliance consultation for crypto operations and regulatory requirements
AML/KYC Compliance Check — Wallet compliance screening for regulated entities
Social Sentiment Analysis — Aggregate bullish sentiment score (0–100) for any token or topic. Sourced from Twitter/X mentions, Reddit posts, and on-chain activity signals. Returns score breakdown by channel with trend direction.
Trading Signal — Professional trading signal for any token: trend direction, RSI/MACD summary, key support/resistance levels, and risk/reward ratio. $0.10 USDC. Pass { symbol } or { address }.
Portfolio Optimization — Modern Portfolio Theory rebalancing for any EVM wallet. Returns optimal target weights, projected Sharpe ratio improvement, and estimated rebalance cost. Pass { address } or { holdings: [{token, amount}] }.
Asset Correlation Matrix — Cross-asset correlation analysis for portfolio diversification
Risk Metrics Dashboard — Comprehensive risk metrics and analytics
Cross-Chain Arbitrage Scanner — Identify arbitrage opportunities across Ethereum, Base, Polygon, Arbitrum, and Robinhood Chain (eip155:4663). Real prices sourced from DexScreener including Robinhood Chain Uniswap V3. Returns opportunities with estimated profit, required capital, and execution path.
Polymarket Events — Get trending events from Polymarket
Polymarket Odds — Get current odds from Polymarket prediction markets
Prediction Market Odds — Get current odds and probability for any prediction market event
Stock Sentiment Analysis — AI-powered stock market sentiment analysis with news, technicals, and institutional activity
Forex Sentiment Analysis — AI-powered forex currency pair sentiment analysis with economic and central bank insights
Kalshi Markets — Get active markets from Kalshi (CFTC-regulated prediction exchange)
Kalshi Odds — Get current odds and orderbook for specific Kalshi markets
Kalshi Search — Search Kalshi prediction markets by keyword
Prediction Market Cross-Platform Spread — Live cross-platform spread analysis: finds identical events on Polymarket and Kalshi simultaneously, computes YES probability divergence, and ranks arbitrage opportunities by spread magnitude
Solana Yield Finder — Real-time Solana lending and yield rates from top DeFi protocols (Kamino, Jupiter Lend, Lulo, Marginfi). Get APY data, TVL, reward incentives, and deposit blinks. Powered by Dialect Markets API.
NASA Earthdata Intelligence Gateway — Unified NASA Earthdata gateway. Single /x402/satellite-earthdata endpoint for all 5 products: precipitation (GPM IMERG), granule search, SST (MUR), soil moisture (SMAP), and ocean color (MODIS). Pass product= field to select. $0.25/call.
CMR Granule Search — Search 1B+ NASA satellite granules by bounding box, date range, platform, and cloud cover. Returns granule metadata and direct download URLs for Landsat, Sentinel, MODIS, VIIRS, and ASTER imagery.
GPM Precipitation Oracle — Real-time observed rain rate at any global coordinate. NASA GPM IMERG via OPeNDAP point query. 0.1° resolution, near-realtime (30min lag). Returns mm/hr precipitation.