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Checks any x402 endpoint's unpaid 402 response: x402 version, accepted scheme, network, asset (is it USDC), price, payTo, https resource url, description, and Bazaar discovery metadata validated against its schema. Makes no payment.

Search Stack Overflow for developer Q&A, solutions, and best practices. AI agent API for technical knowledge retrieval. Accepts USDC payments on Base and Solana

Check an agent wallet's x402 spend cap before it pays, via Liquid Logic X: send a wallet and optional endpoint URL, get allowed, reason, remainingUsdc, capUsdc, spentUsdc from the published policy. $0.001 USDC on Base.

Returns a real-time mempool anomaly score with current gas price vs 20-block median, pending whale swaps, and contract deploy counts. Poll every 5s to monitor mempool for MEV or sandwich attacks and catch gas spikes or large pending swaps as they happen, before they land on-chain.

Generate cryptographically secure random float(s) between 0 and 1

Get live cryptocurrency price and market data from Coinbase Exchange for BTC, ETH, SOL, and other supported trading pairs. Use this crypto market API for last price, best bid and ask, 24-hour open/high/low/volume, and 30-day volume. Defaults to BTC-USD.

Smart contract security and token risk check before you trade, approve, bridge or integrate: deterministic 0-100 risk score for any deployed contract on 20 EVM chains. Flags rug-pull levers (owner mint, blacklist, pause, adjustable fees, upgradeable proxy, ownership not renounced), SELFDESTRUCT/DELEGATECALL, verified source and aderyn static analysis. Read-only. Errors (400 bad input, 422 not a co

Verify a package: does it exist, is it deprecated or yanked, and does it have known vulnerabilities? Checked against the npm/PyPI/crates.io registry plus OSV.dev advisories.

Supported perpetual-futures trading pairs — the list of symbols (BTCUSDT, ETHUSDT, …) the funding-rate scanner and signals cover, as a clean snake_case envelope.

Check the latest or current Base Mainnet block number. Use this to get the live Base block height.

The chain clock on Base: latest block number and its timestamp, plus the node's current time and the lag between them. No parameters. No third-party API, no cache.

Dated crypto catalysts (unlocks, mints, listings, macro) with a long/short bias and 0-1 magnitude each.

Scan untrusted text (a web page, email, tool output or document) for prompt-injection and agent-hijacking patterns before it reaches an LLM. Returns a risk level, score, findings with offsets and a sanitized copy. Deterministic, sub-50ms.

Get a Firebase ID token for authenticating with the callable APIs

Live, exact crowd probabilities of up to 100 open Vatic prediction markets (football, fights, politics, finance, crypto and more).

Matches declared classification tokens against a supplied published dual-use control list. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.

Swap quote

Base ERC-20 check before an agent buys or holds a token. Input: one contract address. Output: allow, warn, or block. Block: not a contract, not an ERC-20, zero supply, or the owner or token contract holds at least 50 percent. Warn: 20 to 50 percent held, proxy (EIP-1967, EIP-1167, or implementation()), or bytecode contains mint or pause. A selector does not prove the public can call it. Concentrat

Base mainnet head: latest block number, block age in seconds, base fee and gas price in gwei. Use it to check the chain is advancing and to estimate fees before sending a transaction. One small JSON read instead of several raw RPC calls and unit conversions.

Physical chemistry (Cantera + CoolProp): chemical equilibrium, adiabatic flame temperature, ignition delay, reactor simulation, flame speed, and thermo/transport/fluid properties. Bundled mechanisms (gri30, h2o2, air). Paid in USDC on Base or Solana.

Solana pump.fun token warnings: sniper-linked fees and creator launch/graduation history. Advisory signals evaluated on selected historical tokens; results may differ for new tokens. Returns RISK_FLAGS or NO_FLAGS; NO_FLAGS does not mean safe. Input: token mint (base58). Replace :address or {address} with the actual mint. Templates are discovery only: do not pay. Ask the user if the mint is missin

Read a public web page and return its visible text. Send url. The response includes the final url, the page title, the HTTP status, and the page text.

Use when an agent is about to pay another agent and needs one finished answer first: should you pay this payee? PayCheck ($0.50) runs Flow's whole checker stack on the payee — payee verdict (kind, activity, contract safety), wallet approval-exposure audit, and recent USDC settlement history on Base — returning one grade (ALLOW / REVIEW / BLOCK, 0-100), a verify_status, all checks, the evidence, an

Why did my transaction fail? Give a chain and tx hash; get status, decoded method, gas used vs limit, fee, token transfers, events and, for failed transactions, the decoded revert reason (Error(string), Panic codes, custom errors resolved by signature) with a plain-language fix. Pending transactions get a stuck-transaction diagnosis (nonce gap, underpriced fee) and the replace/cancel recipe. Chain

Status of every Ethereum Improvement Proposal as JSON: number, title, status (living, final, last-call, review, draft, stagnant, withdrawn) and link, plus counts by status. Parsed live from eips.ethereum.org (EIPs are CC0).

Anthropic pre-IPO fundamentals as JSON: FY2025 revenue and May 2026 run-rate revenue, operating expenses, operating and net loss, compute and infrastructure spend, compute obligations, cash and short-term investments, top-customer revenue share, compute cost per revenue dollar. Each number has its own source URL, verification grade and value type (approx, lower bound, exact, derived).

Fast pre-payment sanity check for agents on Base: confirms the RPC reports Base mainnet (chain ID 8453) and that the official USDC contract has deployed code. No request body. Returns PASS or FAIL with both checks and a timestamp. It is not a token-risk report, transaction simulation or payment proof.

Live BTC/ETH/SOL prices + the Crypto Fear & Greed Index in one call. Sourced from CoinGecko and alternative.me public data, combined for convenience.

Deterministic on-chain structural risk report for an ERC-20 token on Base. Keyless x402-native payment — no signup, no API key. Reports STRUCTURAL risk, not reputation: centralized-control powers (mint/pause/blacklist) are flagged regardless of issuer. Score 0-100, higher = structurally safer. See free real samples before paying: GET /samples/index.json

OnRamperX is a non-custodial value router for agents and humans: fiat<->crypto and cross-chain via one quote interface (Coinbase Onramp v2, Relay, x402). This endpoint returns the router's live capabilities and rail status; use /api/x402/quote for a ranked route. Settlement centers on USDC on Base.