klymax402

x402-agent-tools

100 production-ready AI agent tools with x402 micropayments. Pay-per-call USDC on Base. Zero API keys. Zero subscriptions. Just a wallet.

The largest collection of x402-compatible tools for autonomous AI agents. Built for LangChain, Vercel AI SDK, CrewAI, AutoGPT, and any agent framework that supports tool calling.

3-17x cheaper than StableEnrich, httpay, BlockRun, and Nansen. Same data. Fraction of the cost. See benchmark.

Why x402-agent-tools?

Feature	x402-agent-tools	StableEnrich	httpay	BlockRun
Tools available	103	~12	~8	~15
Avg price/call	$0.003	$0.01-0.05	$0.01-0.03	$0.01-0.05
API keys needed	None	Yes	Yes	Yes
Subscription	None	Monthly	Monthly	Monthly
Hyperliquid data	7 APIs	0	0	0
Prediction markets	2 APIs	0	0	0
Payment	USDC on Base	USDC	USDC	USDC
Framework support	LangChain, AI SDK	Custom	Custom	Custom

Install

npm install x402-agent-tools @x402/fetch @x402/evm viem

Quick Start — 3 Lines to Your First Call

import { createClient } from "x402-agent-tools";

const client = createClient("0xYourPrivateKey");

// Crypto: whale positions on Hyperliquid
const whales = await client.call("hyperliquid_whales", { coin: "BTC" });

// B2B: enrich a company from domain
const company = await client.call("company_enrichment", { domain: "stripe.com" });

// Security: trust score any domain
const trust = await client.call("trust_score", { target: "example.com" });

// DeFi: best bridge route across 60+ chains
const route = await client.call("bridge_routes", {
  fromChain: "1", toChain: "8453", token: "USDC", amount: "1000000"
});

Vercel AI SDK Integration

Use this when building AI agents with Vercel AI SDK. Returns all 103 tools as Vercel-compatible tool objects with automatic x402 payment handling.

import { createClient } from "x402-agent-tools";
import { getX402Tools } from "x402-agent-tools/ai-sdk";
import { generateText } from "ai";
import { anthropic } from "@ai-sdk/anthropic";

const client = createClient("0xYourPrivateKey");

const { text } = await generateText({
  model: anthropic("claude-sonnet-4-20250514"),
  tools: getX402Tools(client),
  prompt: "What are the current funding rates on Hyperliquid for BTC and ETH? Also check if there are any liquidation levels near current prices on Aave.",
});

Filter by category or specific tools

// Only Hyperliquid + DeFi tools (ideal for trading agents)
const tradingTools = getX402Tools(client, {
  categories: ["hyperliquid", "defi", "crypto"]
});

// Only specific tools you need
const researchTools = getX402Tools(client, {
  tools: ["web_scraper", "web_search", "fact_checker", "research_report"]
});

LangChain.js Integration

Use this when building agents with LangChain.js. Returns DynamicStructuredTool instances compatible with all LangChain agent types.

import { createClient } from "x402-agent-tools";
import { getX402LangChainTools } from "x402-agent-tools/langchain";
import { ChatAnthropic } from "@langchain/anthropic";
import { AgentExecutor, createToolCallingAgent } from "langchain/agents";

const client = createClient("0xYourPrivateKey");
const tools = getX402LangChainTools(client);

const llm = new ChatAnthropic({ model: "claude-sonnet-4-20250514" });
const agent = createToolCallingAgent({ llm, tools, prompt: yourPrompt });
const executor = new AgentExecutor({ agent, tools });

await executor.invoke({
  input: "Find the top whale positions on Hyperliquid BTC, check token safety for the top traded token, then summarize the findings."
});

Direct HTTP (No SDK Needed)

Every tool is also available as a standalone x402 HTTP endpoint. Use @x402/fetch directly:

import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount("0xYourPrivateKey");
const paidFetch = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

// trust_score is POST /api/score. GET tools (e.g. dex_quotes -> /api/quote) take query params.
const response = await paidFetch("https://trust-score.api.klymax402.com/api/score", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ target: "example.com" }),
});
const result = await response.json();

All 103 Tools

Hyperliquid Suite — 7 tools

#1 Hyperliquid data provider on x402. Complete DEX coverage.

Tool	Price	What it returns
hyperliquid_data	$0.003	Perp markets: prices, open interest, 24h volume, orderbook depth for 229 markets
hyperliquid_whales	$0.008	Whale positions: sizes, PnL, entry prices, leverage
hl_vaults	$0.008	Vault summaries: APR, TVL, PnL, depositor count
hl_funding	$0.002	Funding rates: current, 1h, 8h, 24h with arb scanner
hl_portfolio	$0.008	Account analysis: positions, PnL, fills, open orders, funding
hl_spot	$0.005	454 spot tokens: prices, volume, wallet balances

Prediction Markets — 2 tools

Tool	Price	What it returns
prediction_markets	$0.012	Active events from Polymarket + Kalshi: probabilities, volume, trending
event_resolver	$0.012	Settlement oracle: resolve outcomes, verify claims, check thresholds

Crypto & DeFi — 16 tools

Tool	Price	What it returns
wallet_portfolio	$0.008	Multi-chain wallet balances and token holdings
gas_oracle	$0.003	Gas prices: fast/standard/slow for any EVM chain
gas_estimator	$0.005	Multi-chain gas comparison in one call
dex_quotes	$0.012	Best swap quotes across DEXs with price impact
token_price	$0.003	Real-time crypto prices via CoinGecko
defi_yields	$0.005	Best DeFi yields: APY, TVL, risk scores
whale_alert	$0.008	Large crypto transactions and whale movements
crypto_news	$0.005	Crypto news with sentiment scores
funding_arb	$0.002	Funding rate arbitrage across exchanges
funding_rates	$0.001	Scan all perps ranked by funding, or one asset across Binance, Bybit, OKX
ens_resolver	$0.005	ENS name resolution and reverse lookup
token_holders	$0.012	Token holder distribution: whale count, concentration
token_ohlcv	$0.005	Historical OHLCV candles
airdrop_checker	$0.012	Check wallet eligibility for active airdrops
bridge_routes	$0.008	Best cross-chain bridge routes via LI.FI (60+ chains)
currency_converter	$0.003	Fiat (ECB) and crypto (CoinGecko) conversion

DeFi Advanced — 3 tools

Tool	Price	What it returns
base_defi	$0.008	Base chain yields: Aerodrome LP, Moonwell lending
liquidation_oracle	$0.003	Liquidation levels: Aave, Compound, Morpho positions
orderbook_depth	$0.012	Uniswap V3 liquidity depth and slippage estimation

NFT — 3 tools

Tool	Price	What it returns
nft_collection	$0.012	Collection floor price, volume, holders, rarity
nft_rarity	$0.008	Token rarity rank, score, trait floor prices
nft_metadata	$0.008	NFT metadata: name, image, attributes, collection info

Solana — 4 tools

Tool	Price	What it returns
solana_launches	$0.008	New token launches: pump.fun, Raydium
jupiter_quotes	$0.005	Jupiter aggregator swap quotes
solana_fees	$0.003	Priority fee estimates at 6 levels
solana_pools	$0.008	DEX pool liquidity: Raydium, Orca, Meteora

Trust & Security — 8 tools

Tool	Price	What it returns
trust_score	$0.02	Unified trust scoring 0-100: domains, wallets, APIs
token_safety	$0.008	Rug pull detection: honeypot, liquidity, ownership
domain_intelligence	$0.012	Full domain intel: DNS, WHOIS, SSL, registrar
ssl_checker	$0.005	SSL/TLS cert: validity, expiry, chain, grade
http_headers	$0.003	HTTP security headers: HSTS, CSP, server detection
port_scanner	$0.008	TCP port scan: open/closed, response time
password_strength	$0.003	Password score 0-100, entropy, crack time
jwt_decoder	$0.003	JWT decode: header, payload, claims, expiry

B2B Enrichment — 6 tools

Tool	Price	What it returns
email_verification	$0.005	Email validation: syntax, MX, disposable, score 0-100
company_enrichment	$0.02	Company data: industry, size, tech, social, founded
person_enrichment	$0.02	Person data: name, role, company, social, location
email_finder	$0.012	Find email from name + domain
tech_enrichment	$0.012	50+ technologies detected on any website
social_profile	$0.015	Social profiles: Twitter, GitHub, LinkedIn, YouTube

Email — 2 tools

Tool	Price	What it returns
email_deliverability	$0.012	Deliverability audit: SPF, DKIM, DMARC, score 0-100
email_send	$0.008	Send emails via Resend: text/HTML, delivery status

Web & SEO — 6 tools

Tool	Price	What it returns
web_scraper	$0.012	URL to clean markdown, headless rendering
seo_analyzer	$0.06	Full SEO audit: meta, headings, schema, score 0-100
screenshot_pdf	$0.015	Screenshots (PNG/JPEG/WebP) and PDF capture
web_search	$0.008	Web search: title, URL, snippet, 10 results
keyword_research	$0.02	SEO keywords: Google Suggest, intent, long-tail
webhook_tester	$0.005	Test webhooks: custom methods, headers, latency

Social — 1 tool

Tool	Price	What it returns
twitter_scraper	$0.012	Twitter/X profiles, search, timelines. No API key

Network — 3 tools

Tool	Price	What it returns
dns_lookup	$0.005	DNS records: A, MX, TXT, CNAME via Cloudflare DoH
ip_geolocation	$0.008	IP geolocation: country, city, ISP, VPN detection
ip_geolocation_batch	$0.02	Batch geolocate up to 20 IPs

NLP — 5 tools

Tool	Price	What it returns
ai_summarizer	$0.03	Summarize text/URLs -- fast extractive summarization
sentiment_analyzer	$0.015	Sentiment, emotions, confidence scores
text_translator	$0.012	Translate 50+ languages with auto-detection
text_classifier	$0.012	Topic classification, readability, content type
language_detector	$0.005	Language detection: 30+ languages, script, confidence

Finance — 1 tool

Tool	Price	What it returns
stock_price	$0.005	Real-time stock quotes: price, change, volume, mcap

Media — 3 tools

Tool	Price	What it returns
image_resize	$0.008	Resize images: dimensions, format conversion
ocr_extract	$0.012	OCR text extraction from images
text_to_speech	$0.012	Text to speech: 20+ languages, MP3 output

Text Processing — 8 tools

Tool	Price	What it returns
diff_checker	$0.005	Line-by-line text diff with similarity score
word_counter	$0.003	Words, chars, sentences, paragraphs, reading time
lorem_ipsum	$0.003	Placeholder text: paragraphs, sentences, words
slug_generator	$0.003	URL-friendly slugs with transliteration
regex_tester	$0.003	Regex testing: matches, groups, explanations
html_to_markdown	$0.003	HTML to clean Markdown conversion
markdown_to_html	$0.003	Markdown to HTML conversion
markdown_renderer	$0.005	Markdown to styled HTML (light/dark/GitHub themes)

Research — 2 tools

Tool	Price	What it returns
fact_checker	$0.012	Verify claims with evidence and sources
research_report	$0.06	Multi-source research reports in markdown

Compliance — 2 tools

Tool	Price	What it returns
gdpr_scanner	$0.03	GDPR compliance: consent, privacy, trackers
pii_detector	$0.012	PII detection: emails, SSNs, credit cards, redaction

Validation — 5 tools

Tool	Price	What it returns
phone_validation	$0.008	Phone validation: carrier, line type, E.164
phone_validation_batch	$0.035	Batch validate up to 50 phones
sms_validator	$0.005	SMS-capable validation with carrier type
address_validator	$0.008	Postal address parsing and normalization
json_validator	$0.003	JSON syntax + schema validation

Developer — 1 tool

Tool	Price	What it returns
code_sandbox	$0.02	Execute Python/JS/SQL in sandbox with output

Generators — 5 tools

Tool	Price	What it returns
qr_code	$0.003	QR codes as base64 PNG
barcode_generator	$0.003	Barcodes: EAN-13, UPC-A, Code128, Code39
hash_generator	$0.003	MD5, SHA1, SHA256, SHA512, bcrypt hashes
uuid_generator	$0.003	UUID v4, v7, ULID, nanoid (batch 100)
color_palette	$0.003	Harmonious color palettes from hex

Documents — 1 tool

Tool	Price	What it returns
pdf_generator	$0.015	PDF from HTML/Markdown with custom layout

Utility — 8 tools

Tool	Price	What it returns
base64_codec	$0.003	Base64 encode/decode (standard + URL-safe)
csv_to_json	$0.003	CSV to JSON with auto-detect delimiter
cron_parser	$0.003	Parse cron expressions with next run times
crontab_generator	$0.003	Natural language to cron expression
timezone_converter	$0.003	Datetime conversion between IANA timezones
unit_converter	$0.003	Length, weight, temp, volume, speed conversion
url_shortener	$0.003	URL shortening with custom aliases
user_agent_parser	$0.003	Parse user agent: browser, OS, device, bot

Data — 2 tools

Tool	Price	What it returns
weather	$0.003	Current weather + 7-day forecast
vector_search	$0.012	TF-IDF cosine similarity document search

How x402 Payment Works

Your Agent                    x402-agent-tools                  API Server
    |                              |                                |
    |-- call("trust_score", {})  ->|                                |
    |                              |-- POST /api/score ------------>|
    |                              |<-- 402 Payment Required -------|
    |                              |                                |
    |                              |   [auto-signs USDC payment]    |
    |                              |                                |
    |                              |-- POST /api/score + payment -->|
    |                              |<-- 200 OK + JSON data ---------|
    |<-- structured result --------|                                |

1. Your agent calls a tool through the SDK
2. The SDK sends an HTTP request to our API
3. Server responds 402 Payment Required with price in USDC
4. @x402/fetch automatically signs a USDC micro-payment on Base L2
5. Request retries with the signed payment header
6. You get structured JSON data back

No API keys. No rate limits. No subscriptions. Pay per call.

Categories

const client = createClient("0xYourPrivateKey");

// List all categories
console.log(client.listCategories());
// ["hyperliquid", "prediction", "crypto", "defi", "nft", "solana",
//  "security", "enrichment", "email", "web", "social", "network",
//  "nlp", "finance", "media", "text", "research", "compliance",
//  "validation", "developer", "generator", "document", "utility", "data"]

// Get tools in a category
const cryptoTools = client.getToolsByCategory("hyperliquid");

// List all 103 tools
const all = client.listTools();

Use Cases

Trading Agent — Use hyperliquid_* + funding_rates + liquidation_oracle + prediction_markets to build autonomous trading strategies. Monitor whale positions, funding arbitrage, and prediction market odds in real-time.

Research Agent — Use web_search + web_scraper + fact_checker + research_report + ai_summarizer to build deep research pipelines. Scrape, verify, and synthesize information from multiple sources.

Security Agent — Use trust_score + token_safety + ssl_checker + port_scanner + gdpr_scanner to audit websites, tokens, and infrastructure. Generate compliance reports automatically.

Sales Agent — Use email_finder + company_enrichment + person_enrichment + email_verification + email_send to build outbound sales pipelines. Find, enrich, verify, and contact leads at scale.

DeFi Agent — Use defi_yields + base_defi + bridge_routes + dex_quotes + wallet_portfolio to optimize yield farming, find bridge routes, and manage multi-chain portfolios.

Requirements

• Node.js >= 18
• A wallet with USDC on Base L2 (even $1 gets you 100-1000+ calls)
• Private key for signing payments (use a dedicated agent wallet, not your main wallet)

AI Discovery

klymax402 publishes a machine-readable catalog for AI systems and LLM crawlers:

• llms.txt: klymax402.com/llms.txt — full API catalog in llms.txt format (100 APIs, pricing, MCP install snippets, x402 payment reference)
• MCP endpoint: https://klymax402.com/mcp — self-hosted MCP gateway, all 100 APIs, Streamable HTTP
• Live stats: klymax402.com/stats — 99.9% uptime, P50 57ms, P95 104ms, 766 txs on-chain

Compatible with Claude, Claude Code, Cursor, Codex, and ElizaOS (plugin: eliza-plugin-klymax402).

Links

• klymax402.com — marketplace homepage
• llms.txt — AI-readable catalog
• Live stats — real-time dashboard
• GitHub
• x402 Protocol
• x402scan Analytics

License

MIT