x402 Checker (AI Nock)
What this MCP does
Offers paid x402 utilities for blockchain, crypto markets, academic and news search, DNS and email checks, CVE lookups, geocoding, and public web retrieval.
Tools
Input schema
{'type': 'object', 'properties': {'q': {'type': 'string', 'description': 'Search phrase (aliases query= search=). Required unless id=.'}, 'id': {'type': 'string', 'description': 'arXiv id (2605.11781 or arXiv:2605.11781).'}, 'cat': {'type': 'string', 'description': 'arXiv category, e.g. cs.CR or cs.AI.'}, 'hits': {'type': 'integer', 'description': '1..8 results (default 5).'}, 'sort': {'type': 'string', 'description': 'relevance (default), date, or updated.'}}}
Input schema
{'type': 'object', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'http(s) listing URL that returns HTTP 402, or this origin.'}, 'name': {'type': 'string', 'description': 'Optional short name. Max 80 chars.'}, 'slot': {'type': 'string', 'description': 'Optional slot. Max 40 chars.'}, 'topic': {'type': 'string', 'description': 'Optional topic. Max 40 chars.'}, 'description': {'type': 'string', 'description': 'Optional one-line description. Max 200 chars.'}}}
Input schema
{'type': 'object', 'properties': {'tz': {'type': 'string', 'description': 'IANA timezone. Default America/Denver.'}, 'end': {'type': 'string', 'description': 'Range end YYYY-MM-DD (inclusive). Requires start. Cap 366 days.'}, 'date': {'type': 'string', 'description': 'YYYY-MM-DD. Optional; default today UTC.'}, 'start': {'type': 'string', 'description': 'Range start YYYY-MM-DD (inclusive). Requires end.'}}}
Input schema
{'type': 'object', 'properties': {'n': {'type': 'string', 'description': 'Block tag or number. Default latest.'}, 'hash': {'type': 'string', 'description': 'Optional 0x-prefixed 32-byte block hash.'}}}
Input schema
{'type': 'object', 'properties': {}}
Input schema
{'type': 'object', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'http(s) URL to inspect. No payment headers are sent to the target.'}}}
Input schema
{'type': 'object', 'required': ['urls'], 'properties': {'urls': {'type': 'array', 'items': {'type': 'string'}, 'maxItems': 10, 'minItems': 1, 'description': '1-10 public http(s) URLs. Same SSRF-safe rules as check. No payment headers are sent to the targets.'}}}
Input schema
{'type': 'object', 'required': ['expr'], 'properties': {'n': {'type': 'integer', 'description': 'Next fire count 1-20. Default 5.'}, 'tz': {'type': 'string', 'description': 'IANA timezone the cron is interpreted in. Default UTC.'}, 'expr': {'type': 'string', 'description': 'Unix crontab 5-field (minute hour day-of-month month day-of-week).'}}}
Input schema
{'type': 'object', 'properties': {'topic': {'type': 'string', 'description': 'Optional case-insensitive filter on title/summary/source. Max 80 chars.'}}}
Input schema
{'type': 'object', 'properties': {'q': {'type': 'string', 'description': 'Keyword search (aliases query= search= keyword=). Required unless id=.'}, 'id': {'type': 'string', 'description': 'CVE id (CVE-YYYY-NNNN). Aliases cve= cve_id=. Required unless q=.'}, 'hits': {'type': 'integer', 'description': '1..8 results (default 5).'}, 'severity': {'type': 'string', 'description': 'low, medium, high, or critical.'}}}
Input schema
{'type': 'object', 'properties': {'q': {'type': 'string', 'description': 'Search query (search mode).'}, 'chain': {'type': 'string', 'description': 'Optional chain filter (default base for address mode).'}, 'address': {'type': 'string', 'description': 'Token contract 0x + 40 hex (token mode).'}}}
Input schema
{'type': 'object', 'required': ['host'], 'properties': {'host': {'type': 'string', 'description': 'Public DNS hostname (not a URL, not an IP).'}}}
Input schema
{'type': 'object', 'required': ['addr'], 'properties': {'addr': {'type': 'string', 'description': 'Email address (local@public-hostname). Max 254 chars.'}}}
Input schema
{'type': 'object', 'required': ['name'], 'properties': {'name': {'type': 'string', 'description': 'ENS name ending in .eth (vitalik.eth, foo.base.eth).'}}}
Input schema
{'type': 'object', 'required': ['q'], 'properties': {'q': {'type': 'string', 'description': 'Search keywords (e.g. gas, token security, board).'}, 'limit': {'type': 'integer', 'description': 'Max results 1..20 (default 8).'}}}
Input schema
{'type': 'object', 'properties': {'limit': {'type': 'integer', 'description': 'History length 1-30 (default 1 = current).'}}}
Input schema
{'type': 'object', 'properties': {'to': {'type': 'string', 'description': 'Quote ISO currencies, comma-separated (default EUR).'}, 'from': {'type': 'string', 'description': 'Base ISO currency (default USD).'}, 'amount': {'type': 'number', 'description': 'Amount of from-currency (default 1).'}}}
Input schema
{'type': 'object', 'properties': {'chain': {'type': 'string', 'description': 'Chain short name. Optional; only base for now.'}}}
Input schema
{'type': 'object', 'properties': {'q': {'type': 'string', 'description': 'Place name for forward geocode (e.g. Denver, CO).'}, 'lat': {'type': 'number', 'description': 'Latitude -90..90 for reverse geocode.'}, 'lon': {'type': 'number', 'description': 'Longitude -180..180 for reverse geocode.'}}}
Input schema
{'type': 'object', 'properties': {'q': {'type': 'string', 'description': 'Repo search query (aliases query= search=). Required for mode=search.'}, 'full': {'type': 'string', 'description': 'owner/repo or github.com/owner/repo URL.'}, 'hits': {'type': 'integer', 'description': '1..8 results (default 5).'}, 'mode': {'type': 'string', 'description': 'search (default), repo, or user.'}, 'repo': {'type': 'string', 'description': 'GitHub repository name. Use with owner=.'}, 'user': {'type': 'string', 'description': 'GitHub login (aliases login=). For mode=user.'}, 'owner': {'type': 'string', 'description': 'GitHub owner/org. Use with repo=.'}}}
Input schema
{'type': 'object', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'http(s) URL to inspect. No payment headers are sent to the target.'}}}
Input schema
{'type': 'object', 'required': ['q'], 'properties': {'q': {'type': 'string', 'description': 'Search phrase (aliases query= search=).'}, 'hits': {'type': 'integer', 'description': '1..8 results (default 5).'}, 'sort': {'type': 'string', 'description': 'relevance (default) or date.'}, 'tags': {'type': 'string', 'description': 'story (default), comment, ask_hn, show_hn, poll, job, front_page, or all.'}}}
Input schema
{'type': 'object', 'required': ['schema', 'data'], 'properties': {'data': {'description': 'JSON instance object or JSON text'}, 'schema': {'description': 'JSON Schema object or JSON text'}}}
Input schema
{'type': 'object', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'http(s) URL to inspect. No payment headers are sent to the target.'}}}
Input schema
{'type': 'object', 'properties': {'n': {'type': 'string', 'description': 'Agent name to look up (lowercase [a-z0-9-] 3-32).'}, 'name': {'type': 'string', 'description': 'Alias of n.'}}}
Input schema
{'type': 'object', 'required': ['name', 'origin'], 'properties': {'name': {'type': 'string', 'description': 'lowercase [a-z0-9-] 3-32 chars, no leading/trailing hyphen.'}, 'origin': {'type': 'string', 'description': 'https URL that returns HTTP 402, or this origin.'}, 'ownerHint': {'type': 'string', 'description': 'Optional short owner hint. Max 80 chars.'}}}
Input schema
{'type': 'object', 'properties': {}}
Input schema
{'type': 'object', 'properties': {'q': {'type': 'string', 'description': 'Search query (max 80). Use q or slug, not both.'}, 'slug': {'type': 'string', 'description': 'Exact Polymarket event or market slug (lowercase [a-z0-9-]).'}, 'limit': {'type': 'integer', 'description': 'Max markets 1-5 (default 5).'}}}
Input schema
{'type': 'object', 'properties': {'ids': {'type': 'string', 'description': 'Comma-separated symbols. Default ETH,USDC,BTC. Max 8.'}, 'token': {'type': 'string', 'description': 'Optional Base ERC-20 0x address.'}}}
Input schema
{'type': 'object', 'required': ['symbol'], 'properties': {'symbol': {'type': 'string', 'description': 'Ticker: equity (AAPL), index (^GSPC), FX (EURUSD=X), crypto (BTC-USD).'}}}
Input schema
{'type': 'object', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'Public http(s) URL to unwrap.'}}}
Input schema
{'type': 'object', 'required': ['url'], 'properties': {'url': {'type': 'string', 'description': 'http(s) URL to inspect. No payment headers are sent to the target.'}}}
Input schema
{'type': 'object', 'required': ['address'], 'properties': {'address': {'type': 'string', 'description': '0x-prefixed 20-byte EVM address on Base (or Solana/base58 for sanctions).'}}}
Input schema
{'type': 'object', 'required': ['hex'], 'properties': {'hex': {'type': 'string', 'description': '0x-prefixed 4-byte selector, or longer calldata (first 4 bytes used).'}}}
Input schema
{'type': 'object', 'properties': {'q': {'type': 'string', 'description': 'Search phrase (aliases query= search=). Required unless id=.'}, 'id': {'type': 'string', 'description': 'Stack Overflow question id (digits).'}, 'hits': {'type': 'integer', 'description': '1..8 results (default 5).'}, 'sort': {'type': 'string', 'description': 'relevance (default), votes, activity, or creation.'}, 'tagged': {'type': 'string', 'description': 'Up to 3 tags, comma-separated.'}}}
Input schema
{'type': 'object', 'required': ['host'], 'properties': {'host': {'type': 'string', 'description': 'Public DNS hostname (not a URL, not an IP).'}}}
Input schema
{'type': 'object', 'required': ['address'], 'properties': {'address': {'type': 'string', 'description': '0x-prefixed 20-byte ERC-20 contract address on Base.'}}}
Input schema
{'type': 'object', 'required': ['address'], 'properties': {'chain': {'type': 'string', 'description': 'base, eth, or bsc (default base).'}, 'address': {'type': 'string', 'description': 'Token contract 0x + 40 hex.'}}}
Input schema
{'type': 'object', 'required': ['hash'], 'properties': {'hash': {'type': 'string', 'description': '0x-prefixed 32-byte transaction hash on Base.'}}}
Input schema
{'type': 'object', 'properties': {'name': {'type': 'string', 'description': 'IANA timezone name. Optional; default America/Denver.'}}}
Input schema
{'type': 'object', 'required': ['address'], 'properties': {'address': {'type': 'string', 'description': '0x-prefixed 20-byte EVM address on Base (or Solana/base58 for sanctions).'}}}
Input schema
{'type': 'object', 'properties': {'q': {'type': 'string', 'description': 'Search query (aliases query= search=). Required unless title=.'}, 'hits': {'type': 'integer', 'description': '1..8 search results (default 5).'}, 'lang': {'type': 'string', 'description': 'en (default) or simple.'}, 'title': {'type': 'string', 'description': 'Direct page title or wikipedia.org/wiki/Title URL. Alias page=.'}}}
Input schema
{'type': 'object', 'properties': {'q': {'type': 'string', 'description': 'Place name (e.g. Denver, CO).'}, 'lat': {'type': 'number', 'description': 'Latitude -90..90.'}, 'lon': {'type': 'number', 'description': 'Longitude -180..180.'}, 'units': {'type': 'string', 'description': 'metric (default) or us.'}}}
Recent tool changes
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