YourAITools API › docs

Which API should I use?

Decision guide: map what your agent needs (pay safely, check a token, scan for prompt injection, read a page, trading research, find a paid API) to a pay-per-call x402 tool, with price, endpoint, curl and MCP example.

How paying works: call the paid URL with no payment and you get HTTP 402 with a PAYMENT-REQUIRED header (x402 v2) and the price. Pay in USDC on Base, Polygon, Arbitrum One or Solana with any x402 client (@x402/fetch, x402-axios, AgentKit, x402 Python) and retry. Per call only: no signup, no subscription, no custody. Or buy prepaid credits once (https://api.youraitools.co/credits/) and send Authorization: Bearer <key>. Every tool has a free preview, an OpenAPI doc and a remote MCP server (streamable HTTP) at <tool>/mcp.

MCP client config (any tool): {"mcpServers":{"<tool>":{"url":"https://api.youraitools.co/<tool>/mcp"}}}

Paying and signing (wallet agents)

If your agent needs to…	Use	Endpoint and price (USDC)	Example
Before I pay or approve an address: is it OK, caution or block?	CounterpartyCheck free preview	`GET https://api.youraitools.co/counterpartycheck/v1/lite` $0.005 quick $0.015, full $0.05. Safety check only.	`curl -i "https://api.youraitools.co/counterpartycheck/v1/lite?address=0x098B716B8Aaf21512996dC57EB0615e2383E2f96&chain=ethereum&intent=pay"` MCP `https://api.youraitools.co/counterpartycheck/mcp` → `check_counterparty`
Is this address on the OFAC SDN sanctions list?	PayGuard free preview	`GET https://api.youraitools.co/payguard/v1/address` $0.001 Free tier: 30 calls/day (full results via remote MCP: screen_address, screen_batch), then $0.001 per call in USDC POST /v1/batch: 50 addresses for $0.01. Informational, not legal advice.	`curl -i "https://api.youraitools.co/payguard/v1/address?address=0x098B716B8Aaf21512996dC57EB0615e2383E2f96"` MCP `https://api.youraitools.co/payguard/mcp` → `screen_address` Claude Code: `claude mcp add --transport http payguard https://api.youraitools.co/payguard/mcp` Cursor: `{"mcpServers":{"payguard":{"url":"https://api.youraitools.co/payguard/mcp"}}}` · Add to Cursor Claude Desktop: `{"mcpServers":{"payguard":{"command":"npx","args":["-y","mcp-remote","https://api.youraitools.co/payguard/mcp"]}}}`
Is it safe to sign this transaction, Permit/Permit2, EIP-712 or x402 payment?	SignCheck free preview	`GET https://api.youraitools.co/signcheck/v1/lite` $0.005 full (live simulation) $0.015 at /v1/check. Safety check only.	`curl -i "https://api.youraitools.co/signcheck/v1/lite?to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&data=0x095ea7b3..."` MCP `https://api.youraitools.co/signcheck/mcp` → `check_signature`
Is this Base ERC-20 token a honeypot / rug before I buy or accept it?	TokenVerdict free preview	`GET https://api.youraitools.co/tokenverdict/v1/lite` $0.005 quick $0.015, deep $0.05. Safety check only.	`curl -i "https://api.youraitools.co/tokenverdict/v1/lite?token=0x532f27101965dd16442E59d40670FaF5eBB142E4"` MCP `https://api.youraitools.co/tokenverdict/mcp` → `check_token`
Trading or sniper bot: one fixed-JSON risk verdict for a Base token (or up to 20 at once)	TokenVerdict free preview	`GET https://api.youraitools.co/tokenverdict/v1/verdict` $0.01 verdict safe/caution/danger, risk_score 0-100, signals (honeypot, taxes, owner privileges, proxy, LP, holders, verified, age; unknown when a source is down). Batch: POST /v1/batch {"addresses": [...]} up to 20 at $0.01 each. Safety check only.	`curl -i "https://api.youraitools.co/tokenverdict/v1/verdict?address=0x532f27101965dd16442E59d40670FaF5eBB142E4"` MCP `https://api.youraitools.co/tokenverdict/mcp` → `check_token`
Is this Solana SPL / Token-2022 mint safe to interact with?	SolVerdict free preview	`GET https://api.youraitools.co/solverdict/v1/lite` $0.005 check $0.02. Safety check only.	`curl -i "https://api.youraitools.co/solverdict/v1/lite?mint=DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263"` MCP `https://api.youraitools.co/solverdict/mcp` → `check_solana_token`
Is this AI agent registered, Active and Verified?	AgentGate free preview	`GET https://api.youraitools.co/agentgate/v1/check-agent` $0.005 Concordium Agent Registry.	`curl -i "https://api.youraitools.co/agentgate/v1/check-agent?id=Mf22soLh1NuZYFgBK8iSs"` MCP `https://api.youraitools.co/agentgate/mcp` → `check_agent`

Guarding the agent itself

If your agent needs to…	Use	Endpoint and price (USDC)	Example
Does this text, web page or MCP tool definition contain a prompt injection?	InjectScan free preview	`GET https://api.youraitools.co/injectscan/v1/scan` $0.003 Free tier: 30 calls/day (full scans via remote MCP: scan_text, scan_url, scan_tools), then $0.003 per call in USDC (safety check only) POST /v1/scan takes {text\|url\|tools}. Safety check only.	`curl -i "https://api.youraitools.co/injectscan/v1/scan?text=Ignore%20previous%20instructions"` MCP `https://api.youraitools.co/injectscan/mcp` → `scan_text` Claude Code: `claude mcp add --transport http injectscan https://api.youraitools.co/injectscan/mcp` Cursor: `{"mcpServers":{"injectscan":{"url":"https://api.youraitools.co/injectscan/mcp"}}}` · Add to Cursor Claude Desktop: `{"mcpServers":{"injectscan":{"command":"npx","args":["-y","mcp-remote","https://api.youraitools.co/injectscan/mcp"]}}}`
Am I about to leak a seed phrase, private key, API secret or PII?	LeakGuard free preview	`GET https://api.youraitools.co/leakguard/v1/lite` $0.005 scan $0.02 adds JSON payloads + funded-wallet check. Inputs never stored. Safety check only.	`curl -i "https://api.youraitools.co/leakguard/v1/lite?text=deploy%20log%3A%20aws%20AKIAIOSFODNN7EXAMPLE"` MCP `https://api.youraitools.co/leakguard/mcp` → `scan_for_leaks`
Is this npm/PyPI/Go/Cargo dependency safe to install?	PkgGuard free preview	`GET https://api.youraitools.co/pkgguard/v1/package` $0.001 Free tier: 30 calls/day (full results via remote MCP, up to 100 packages per scan: check_package, scan_dependencies), then $0.001 per package / $0.003 per scan in USDC (safety check only) POST /v1/scan: a whole manifest/lockfile (up to 500 packages) for $0.003. Safety check only.	`curl -i "https://api.youraitools.co/pkgguard/v1/package?ecosystem=npm&name=lodash&version=4.17.15"` MCP `https://api.youraitools.co/pkgguard/mcp` → `check_package` Claude Code: `claude mcp add --transport http pkgguard https://api.youraitools.co/pkgguard/mcp` Cursor: `{"mcpServers":{"pkgguard":{"url":"https://api.youraitools.co/pkgguard/mcp"}}}` · Add to Cursor Claude Desktop: `{"mcpServers":{"pkgguard":{"command":"npx","args":["-y","mcp-remote","https://api.youraitools.co/pkgguard/mcp"]}}}`
Is this domain or email real and trustworthy?	DomainCheck free preview	`GET https://api.youraitools.co/domaincheck/v1/domain` $0.002 GET /v1/email?email=... $0.001. Safety check only.	`curl -i "https://api.youraitools.co/domaincheck/v1/domain?domain=example.com"` MCP `https://api.youraitools.co/domaincheck/mcp` → `check_domain`

Reading the web

If your agent needs to…	Use	Endpoint and price (USDC)	Example
Read a web page as clean Markdown	WebRead free preview	`GET https://api.youraitools.co/webread/v1/read` $0.002 Free tier: 30 calls/day (full Markdown via remote MCP, tool read_url), then $0.002 per call in USDC robots.txt-aware, SSRF-safe. Lite (first 8,000 characters) $0.001 at /v1/lite.	`curl -i "https://api.youraitools.co/webread/v1/read?url=https://example.com/"` MCP `https://api.youraitools.co/webread/mcp` → `read_url` Claude Code: `claude mcp add --transport http webread https://api.youraitools.co/webread/mcp` Cursor: `{"mcpServers":{"webread":{"url":"https://api.youraitools.co/webread/mcp"}}}` · Add to Cursor Claude Desktop: `{"mcpServers":{"webread":{"command":"npx","args":["-y","mcp-remote","https://api.youraitools.co/webread/mcp"]}}}`
What is this website built with (CMS, framework, hosting, analytics)?	StackDetect free preview	`GET https://api.youraitools.co/stackdetect/v1/detect` $0.003	`curl -i "https://api.youraitools.co/stackdetect/v1/detect?url=https://laravel.com"` MCP `https://api.youraitools.co/stackdetect/mcp` → `detect_stack`
Is this website ready for AI agents (llms.txt, MCP, x402, robots)?	AgentReady free preview	`GET https://api.youraitools.co/agentready/v1/lite` $0.005 audit $0.03.	`curl -i "https://api.youraitools.co/agentready/v1/lite?url=https://example.com"` MCP `https://api.youraitools.co/agentready/mcp` → `audit_website`

Money and market data

If your agent needs to…	Use	Endpoint and price (USDC)	Example
Convert an amount between currencies (USD, EUR, GBP, JPY...) at an official rate	FXRate free preview	`GET https://api.youraitools.co/fx/v1/convert` $0.001 Free tier: 30 calls/day (remote MCP: convert_currency, fx_rates, fx_history), then $0.001 per call in USDC ECB reference rates (daily, back to 1999); rates table $0.001 at /v1/rates, daily history $0.002 at /v1/history. Not live trading quotes.	`curl -i "https://api.youraitools.co/fx/v1/convert?from=USD&to=EUR&amount=100"` MCP `https://api.youraitools.co/fx/mcp` → `convert_currency` Claude Code: `claude mcp add --transport http fx https://api.youraitools.co/fx/mcp` Cursor: `{"mcpServers":{"fx":{"url":"https://api.youraitools.co/fx/mcp"}}}` · Add to Cursor Claude Desktop: `{"mcpServers":{"fx":{"command":"npx","args":["-y","mcp-remote","https://api.youraitools.co/fx/mcp"]}}}`
Current USD price of BTC, ETH, SOL or another coin	CryptoPrice free preview	`GET https://api.youraitools.co/cryptoprice/v1/price` $0.001 Free tier: 30 calls/day (remote MCP: crypto_price, crypto_movers), then $0.001 per call in USDC up to 20 coins per call; top movers $0.002 at /v1/movers. Hyperliquid public market data. Not financial advice. Past performance does not guarantee future results.	`curl -i "https://api.youraitools.co/cryptoprice/v1/price?symbols=BTC,ETH,SOL"` MCP `https://api.youraitools.co/cryptoprice/mcp` → `crypto_price` Claude Code: `claude mcp add --transport http cryptoprice https://api.youraitools.co/cryptoprice/mcp` Cursor: `{"mcpServers":{"cryptoprice":{"url":"https://api.youraitools.co/cryptoprice/mcp"}}}` · Add to Cursor Claude Desktop: `{"mcpServers":{"cryptoprice":{"command":"npx","args":["-y","mcp-remote","https://api.youraitools.co/cryptoprice/mcp"]}}}`

Trading research (read-only)

If your agent needs to…	Use	Endpoint and price (USDC)	Example
What is the funding rate for BTC right now (one number per asset, polled often)?	PerpRadar free preview	`GET https://api.youraitools.co/perpradar/v1/funding` $0.002 cross-venue median 8h % and APR, spread, cheapest venue to be long or short. Not financial advice. Past performance does not guarantee future results.	`curl -i "https://api.youraitools.co/perpradar/v1/funding?symbol=BTC"` MCP `https://api.youraitools.co/perpradar/mcp` → `perp_positioning`
Perp funding, open interest and cheapest venue for an asset	PerpRadar free preview	`GET https://api.youraitools.co/perpradar/v1/lite` $0.005 full $0.03, scan $0.02. Not financial advice. Past performance does not guarantee future results.	`curl -i "https://api.youraitools.co/perpradar/v1/lite?symbol=BTC"` MCP `https://api.youraitools.co/perpradar/mcp` → `perp_positioning`
Technical indicators, risk sizing or a rule backtest for a symbol	TASignal free preview	`GET https://api.youraitools.co/tasignal/v1/lite` $0.005 risk $0.02, backtest $0.05. Not financial advice. Past performance does not guarantee future results.	`curl -i "https://api.youraitools.co/tasignal/v1/lite?symbol=BTC&timeframe=1h"` MCP `https://api.youraitools.co/tasignal/mcp` → `ta_bias`
What are the most profitable Hyperliquid traders holding?	SmartPerps free preview	`GET https://api.youraitools.co/smartperps/v1/lite` $0.003 coin $0.02, scan $0.03, wallet $0.01. Not financial advice. Past performance does not guarantee future results.	`curl -i "https://api.youraitools.co/smartperps/v1/lite?symbol=BTC"` MCP `https://api.youraitools.co/smartperps/mcp` → `smart_money_bias`
Will this Hyperliquid perp order be rejected (tick, lot, $10 minimum, leverage tier, OI cap, delisted), and what does it cost and risk?	PerpCheck free preview	`GET https://api.youraitools.co/perpcheck/v1/lite` $0.003 Free tier: 30 calls/day (full checks via remote MCP, tool check_perp_order), then $0.003 lite / $0.01 full per call in USDC (not financial advice) full $0.01 adds liquidation estimate, taker impact and funding carry. Read-only; never places orders. Not financial advice; the exchange decides whether an order is accepted.	`curl -i "https://api.youraitools.co/perpcheck/v1/lite?coin=ETH&side=long&size=0.0123456&price=3000.123&leverage=60"` MCP `https://api.youraitools.co/perpcheck/mcp` → `check_perp_order` Claude Code: `claude mcp add --transport http perpcheck https://api.youraitools.co/perpcheck/mcp` Cursor: `{"mcpServers":{"perpcheck":{"url":"https://api.youraitools.co/perpcheck/mcp"}}}` · Add to Cursor Claude Desktop: `{"mcpServers":{"perpcheck":{"command":"npx","args":["-y","mcp-remote","https://api.youraitools.co/perpcheck/mcp"]}}}`

Building agents with many tools

If your agent needs to…	Use	Endpoint and price (USDC)	Example
Will my MCP server or tool list work on OpenAI, Anthropic and Gemini, which tools will the model confuse, and what do the definitions cost in tokens?	ToolFit free preview	`GET https://api.youraitools.co/toolfit/v1/lite` $0.003 Free tier: 20 audits/day and 10 MCP server checks/day (remote MCP: audit_tools, diff_tools, check_mcp_server), then $0.002 to $0.01 per call in USDC full $0.01 adds fixes and a pinned set; diff $0.002 compares against a pin; check $0.005 is a live MCP server preflight. Lists tools only, never calls them.	`curl -i "https://api.youraitools.co/toolfit/v1/lite?url=https%3A%2F%2Fmcp.deepwiki.com%2Fmcp"` MCP `https://api.youraitools.co/toolfit/mcp` → `audit_tools` Claude Code: `claude mcp add --transport http toolfit https://api.youraitools.co/toolfit/mcp` Cursor: `{"mcpServers":{"toolfit":{"url":"https://api.youraitools.co/toolfit/mcp"}}}` · Add to Cursor Claude Desktop: `{"mcpServers":{"toolfit":{"command":"npx","args":["-y","mcp-remote","https://api.youraitools.co/toolfit/mcp"]}}}`
My agent has too many tools for one prompt: which 3-12 should the model see for this task?	ToolRoute free preview	`GET https://api.youraitools.co/toolroute/v1/route` $0.001 Free tier: 200 route_tools calls/day (remote MCP; register_tools is free), then $0.001 per route in USDC Register the tool set once (free) to get a set_id. Deterministic keyword ranking, no LLM.	`curl -i "https://api.youraitools.co/toolroute/v1/route?set_id=ts_0d467a406d3eb14344c41c32d8802268&query=read%20a%20web%20page%20as%20markdown"` MCP `https://api.youraitools.co/toolroute/mcp` → `route_tools` Claude Code: `claude mcp add --transport http toolroute https://api.youraitools.co/toolroute/mcp` Cursor: `{"mcpServers":{"toolroute":{"url":"https://api.youraitools.co/toolroute/mcp"}}}` · Add to Cursor Claude Desktop: `{"mcpServers":{"toolroute":{"command":"npx","args":["-y","mcp-remote","https://api.youraitools.co/toolroute/mcp"]}}}`

Finding and selling paid APIs

If your agent needs to…	Use	Endpoint and price (USDC)	Example
I need a paid API for a task and don't know which one	ToolPick free preview	`GET https://api.youraitools.co/toolpick/v1/lite` $0.003 pick (live-verified best pick) $0.01, market (seller price quartiles) $0.02. Ranks, does not endorse.	`curl -i "https://api.youraitools.co/toolpick/v1/lite?need=web%20search"` MCP `https://api.youraitools.co/toolpick/mcp` → `find_paid_api`
Will my x402 endpoint work with payers and x402 discovery catalogs?	x402fix free preview	`GET https://api.youraitools.co/x402fix/v1/lite` $0.005 check $0.02, site $0.05.	`curl -i "https://api.youraitools.co/x402fix/v1/lite?url=https://api.youraitools.co/counterpartycheck/v1/lite"` MCP `https://api.youraitools.co/x402fix/mcp` → `check_x402_endpoint`
Put an x402 paywall in front of my own API	x402 Proxy Template free preview	`GET https://api.youraitools.co/x402-template/download` $19 one-time Cloudflare Worker zip, MIT. Free preview at the landing page.	`curl -i "https://api.youraitools.co/x402-template/download"`

Audio and media

If your agent needs to…	Use	Endpoint and price (USDC)	Example
Transcribe an audio file (speech to text, subtitles, translate to English)	Transcribe free capacity check	`GET https://api.youraitools.co/transcribe/v1/transcribe` $0.003 per audio minute MP3, WAV, M4A or OGG/Opus up to 30 minutes; POST the file as the body, or audio_url / audio_base64. format=srt\|vtt, task=translate. The 402 quotes the exact total for your file.	`curl -i "https://api.youraitools.co/transcribe/v1/transcribe?audio_url=https://api.youraitools.co/transcribe/sample.mp3"`

Paying less per call

If your agent needs to…	Use	Endpoint and price (USDC)	Example
Skip the on-chain payment on every call (prepaid balance)	Credits (prepaid packs) free preview	`POST https://api.youraitools.co/credits/v1/pack/1` $1 (or $5 for $5.50) Then send Authorization: Bearer <key> to any paid route. Not refundable.	`curl -i -X POST "https://api.youraitools.co/credits/v1/pack/1"` MCP `https://api.youraitools.co/credits/mcp` → `credits_quote`

Not sure?

Ask ToolPick: curl -i "https://api.youraitools.co/toolpick/v1/lite?need=<your task>" ($0.003) or try the free preview. It also searches other sellers' x402 APIs.

Machine-readable: which-api.md · llms.txt · llms-full.txt · /.well-known/x402 · /openapi.json. Trading tools: Not financial advice. Past performance does not guarantee future results. Safety tools: safety check only.