Discover

Exa

Verified by vAPI

api.exa.ai

Base

Return relevant web search results. Each request costs $0.007 in USDC on Base over x402.

Nansen

Verified by vAPI

api.nansen.ai

Base

Return smart-money token screening data. Each request costs $0.01 in USDC on Base over x402.

Kaito

Verified by vAPI

api.kaito.ai

Base

Return token sentiment data. Each request costs $0.60 in USDC on Base over x402.

o1 Launchpad

Verified by vAPI

api.vapinetwork.ai

Base

Hosted by vAPI for o1.exchange. Calls cost $0.001–$0.05 USDC per call on Base over x402.

CoinGecko

Verified by vAPI

pro-api.coingecko.com

Base

Return cryptocurrency prices. Each request costs $0.01 in USDC on Base over x402.

The Graph

Verified by vAPI

gateway.thegraph.com

Base

Query onchain data from 20 Subgraphs: Uniswap, Aave, Aerodrome, ENS, Curve, Lido and more. Each request costs $0.01 in USDC on Base over x402.

StablePhone

Verified by vAPI

x402phone.dev

Base

Have an AI voice agent phone a US or Canadian number and carry out a task. Each call settles $0.54 in USDC on Base over x402.

AgentMail

Verified by vAPI

x402.api.agentmail.to

Base

Create an agent email inbox. Each request costs $2.00 in USDC on Base over x402.

Messari

Verified by vAPI

api.messari.io

Base

Return a crypto research chat completion. Each request costs $0.25 in USDC on Base over x402.

Dot

Verified by vAPI

api.usedot.xyz

Base

Return a private AI chat completion. Each request costs about $0.009 in USDC on Base over x402.

Birdeye

Verified by vAPI

public-api.birdeye.so

Solana

Return Solana token prices, market data and on-chain trades. Each request costs $0.003 in USDC on Solana over x402.

Ranked news brief for any topic, refreshed every 15 minutes: the most-corroborated recent headlines, each with source, URL, published time, age in minutes and an importance score computed from how many independent news engines surfaced it and how fresh it is. Zero-LLM, deterministic, no API key. Use it for a market or crypto morning brief, monitoring a company or keyword, or grounding a summary in dated sources.

Latest block on any major EVM chain: block number, timestamp, age in seconds, base fee and gas used/limit. The cheapest possible liveness and chain-tip check for an agent: confirm a chain is progressing, timestamp an observation, or pick a block for a query.

YouTube video metadata in one call: title, channel name and id, duration, upload date, view and like counts, description, thumbnail URL, the chapter list with start and end times, and the language plus kind (manual or auto) of every available caption track. Never downloads media. Use it to check a video's length or caption availability before paying for a transcript, or to enrich a bare video link with real facts.

Latest Ethereum block height - current chain tip via eth_blockNumber

Ethereum chain ID (EIP-155) via eth_chainId - confirm which chain a network is on

EVM network info - chain ID, block height, gas price, chain head age, and chain characteristics in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice + latest block header)

START HERE — the cheapest answer we sell ($0.001) and the first call most agents make. Is crypto risk-on right now? Whether the BTC 200-day master gate is open or closed, the LONG/CASH state of the BTC and ETH sleeves, and a one-line verdict, all evaluated on UTC daily closes by a long-only rules engine. Poll it every cycle; when the gate flips, step up to /api/board/regime for the equity tape and /api/board/indices for the index ladder ($0.005 each). Research, not advice.

Exa /contents endpoint

Resolve DNS records using DNS-over-HTTPS and return structured JSON for infrastructure, security, and agent workflows.

List every token FortiSwap routes on the X1 blockchain (XDEX + Degen launchpad): mint, symbol, name, decimals, logo, USD price, 24h volume, TVL, trust tier, liquidity, and the isSpam / isVerified / riskReasons safety flags. Call this first to resolve a symbol to a mint before quoting or building an X1 swap.

Latest crypto news and breaking headlines, real-time from Cointelegraph. Search any topic (bitcoin, ethereum, DeFi, regulation, market sentiment) or pull the live feed, with full article text across 14 languages. Built for agents tracking crypto markets, tokens, and Web3.

Spot Check. REQUIRES ?host= on the paid request — a signed request without it is refused before the gate and no money moves. Name a host and get what this observatory already holds on it, signed: corpus rounds and verdicts as recorded, when we last actually knocked, our coverage of the window since we met it, and the gaps with their reasons. Read from the books at the counter — no request is made to the host, so the answer is as fresh as our last round and no fresher, and sa…

Latest crypto token prices by ticker symbol, CoinGecko id, or chain:address (BTC, ETH, SOL, or base:0x…): current spot price, token symbol, decimals, and a confidence score, for up to 50 coins in one call. Pass ?at=<unix> for the historical price at a point in time. Sourced from DefiLlama across every major chain.