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Ethereum: Wallet portfolio: native balance plus every ERC-20 holding with USD price and value, total net worth, NFT collection count. $0.03 per call.

Lint an x402 endpoint: probes the URL once unpaid and returns a JSON report with a fix for every finding: payment-requirement fields, network, amount units, asset, payTo, EIP-712 domain read on-chain vs `extra`, Bazaar metadata, v1/v2 consistency and CORS for browser buyers. Free demo: GET /v1/check?url=

Cost-aware crypto perpetual risk report for trading agents: projected net carry, break-even time, market regime, breadth, funding crowding, basis outliers, open interest, 24h persistence, and transparent risk flags.

Token launch bundle and sniper detection on Base — flags coordinated bundle buys and snipers

Agent Bounty Radar, new items only ($0.01): bounties first seen after ?since= (ISO-8601). Open crypto-paid bounties an autonomous AI agent can enter and get paid for (Taskmarket, Stacker News, Superteam Earn; human-only listings filtered out), each with reward, deadline, chain and a ready 'how to enter' command. /bounties/new?since= returns only items first seen after your last poll, with stable I

Post a message to the board — a public, permanent, paid message wall. Every message costs $0.005 USDC, making economic proof-of-intent the spam filter. Messages are public, timestamped, and attributed to the paying wallet's transaction hash.

Read-only Polymarket market health: resolves a full Polymarket URL, slug, token ID, or search phrase, then returns spread, 1/2/5 cent depth, imbalance, fee schedule, and book freshness.

Get trending insights in the blockchain space.

BentCrypto Solana Token Security API - authority and Token-2022 control analysis for AI agents

Returns DefiLlama Base yield pools matching an asset symbol, ranked by reported APY.

Returns observed Base token USD price with provider and liquidity provenance.

Base ERC-20 token market snapshot: up to ten DEX Screener trading pairs ranked by USD liquidity, with pair price quotes, 24-hour volume and buy/sell counts, price changes, on-chain contract metadata, and GoPlus risk flags, buy/sell/transfer taxes, and reported largest-holder shares. Sources and retrieval times are included. Missing or unavailable data is not evidence of safety; this API gives no c

Base token safety snapshot: heuristic on-chain scan of an ERC-20 on Base (bytecode/proxy check, ERC-20 metadata, risky-function selector scan, owner/renounce check, Uniswap v3 / Aerodrome pool + liquidity discovery, best-effort sell simulation). Public RPC data only. Heuristic, not financial advice.

Cryptographic hash of a text string - sha256 (default), sha512, sha1 or md5 - returned as hex and base64. Use it for content fingerprints, integrity checks and deterministic ids; pure computation, instant.

On-chain snapshot for a Base address: contract vs EOA, transaction count, ETH balance, USDC balance, risk flags, and a simple recommendation (safe_to_pay | review | avoid). Use before your agent sends USDC to an unknown payTo wallet.

Run BlockchainSecurity multi-hop fund-flow tracing from a starting address through an x402 paid wrapper.

Is this Solana token safe to buy? CLEAR / CAUTION / AVOID pre-swap verdict: authorities, Token-2022 extensions, holder concentration, liquidity, pair age, plus a live Jupiter sell-route and price-impact check at ?sizeUsd (default 100).

Top-100 crypto market snapshot JSON

AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat

Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (/v1/x402-broker) — Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall.

Fresh crypto news and source-linked Bitcoin, Ethereum, Base, and market headlines from four independent publisher feeds, with deterministic topic filtering and no generated claims.

Current Base mainnet block consensus, EIP-1559 fees, ETH/USD reference price, and deepest WETH-stablecoin DEX pool telemetry.

Accounting, reconciliation and audit trail for autonomous agent spending. Record every x402 purchase as a receipt; each is matched against the on-chain USDC payment (Base, Solana), missing or unmatched payments are flagged, finance gets a monthly statement and CSV export, and daily batch fingerprints are anchored on a public ledger with a verification page per receipt. USD 1 per agent wallet per c

News/wire pulse for one symbol or meta ($0.04). Narrative context only NFA.

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Solana XRaid Cluster Protocol endpoint (ultra-small). One payment creates a cluster with mixed pricing and component requirements.

Fetch a public URL and return cleaned markdown

First paid call: confirms your x402 integration end to end and returns live payment-rail and chain state with a signed receipt.

Ownership verification with a signed receipt. The receipt is the product: the same answer is available for free at /api/verify-ownership.