| Agent402.tools Cryptographic hash of a text string. Algorithms: sha256 (default), sha512, sha1, md5. Returns hex and base64 digests. |  agent402.tools | - | $0.001 | listed |
| Agent402.tools Current air quality index and pollutant concentrations for any location: US AQI, PM2.5, PM10, ozone, NO2, SO2, CO. Open-Meteo air quality API, no key, global. ?lat=28.61&lon=77.23. | agent402.tools | - | $0.003 | listed |
| Agent402.tools Generate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than the small model. Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars. | agent402.tools | - | $0.01 | listed |
| Agent402.tools Atomically write (or release) a key only if its current value equals `expected` — the coordination primitive for distributed locks and optimistic concurrency across agents. Acquire a lock: expected=null + a value + ttlSeconds. Release it: expected... | agent402.tools | - | $0.001 | listed |
| Agent402.tools Latest US unemployment rate plus a trailing N-month series for trend. Source: FRED UNRATE (Bureau of Labor Statistics). ?months=12 (1-120, default 12). | agent402.tools | - | $0.01 | listed |
| Agent402.tools Encode text to HTML entities or decode them back. mode: encode (default) or decode. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Base58 encode or decode text (Bitcoin/IPFS alphabet). mode: encode (default) or decode. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Check any public URL: status code, latency, final URL after redirects, and response headers. The uptime primitive for agent monitors. | agent402.tools | - | $0.003 | listed |
| Agent402.tools Live currency conversion using European Central Bank reference rates (via Frankfurter). Converts an amount between two currencies and returns the rate and date. ?from=USD&to=EUR&amount=100 | agent402.tools | - | $0.003 | listed |
| Agent402.tools Describe a task (or name a slug) and the Smart Order Router resolves the best-matching tool and RUNS it in the same call - flat $0.01 covering any tool listed at $0.005 or less, from THIS host's catalog or any external x402 seller in the open inde... | agent402.tools | - | $0.01 | listed |
| Agent402.tools Store a piece of text for later similarity recall - a per-wallet semantic index an agent cannot host in-session. Returns an id. Pair with /api/memory/recall to retrieve by meaning, not exact key. | agent402.tools | - | $0.003 | listed |
| Agent402.tools Generate UUIDs. ?version=4 (default, random) or 7 (time-ordered), ?count=1..100. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Resolve a US latitude/longitude to its county, state, and census block FIPS via the FCC Area API - the geographic context agents need for any coordinate. Live gov data, no key. ?lat=34.0522&lon=-118.2437 | agent402.tools | - | $0.003 | listed |
| Agent402.tools OpenAI-compatible chat completions, nano tier: gpt-4.1-nano, gpt-5-nano, gemini flash-lite, small llama/ministral/qwen, deepseek-chat - $0.003 per call in USDC over x402, priced for high-frequency agent loops. Same wire format as /v1/chat/completi... | agent402.tools | - | $0.003 | listed |
| Agent402.tools Split text into overlapping chunks for RAG ingestion - by characters (default) or by exact LLM tokens. Returns the chunks plus offsets. Deterministic, no model needed. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Resolve a free-form address or place name to coordinates: lat/lon, display name, bounding box, place type. OpenStreetMap/Nominatim, no key. ?q=1600+Pennsylvania+Ave+Washington+DC&limit=1. | agent402.tools | - | $0.003 | listed |
| Agent402.tools Multi-period weather forecast for a US location from api.weather.gov (NWS, public domain). Give latitude and longitude; returns the place plus upcoming forecast periods (temp, wind, conditions). US coverage only. ?lat=40.71&lon=-74.01 | agent402.tools | - | $0.003 | listed |
| Agent402.tools Live stock/index/FX/crypto quote: last price, day range, 52-week range, previous close, currency, exchange, and a relative change vs. previous close, as clean JSON. The single-symbol NOW read - for OHLC time series use stock-history, for pre/post-... | agent402.tools | - | $0.003 | listed |
| Agent402.tools Probe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an agent needs to decide whether/how to pay. Read-only; does not pay. ?url=https://api.example.com/paid&method=GET | agent402.tools | - | $0.003 | listed |
| Agent402.tools Fetch a URL and return every response header plus a security analysis: HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP/CORP/COEP. Scores 0–100 by presence, flags weak HSTS, and warns on Server/X-Powere... | agent402.tools | - | $0.003 | listed |
| Agent402.tools Decode a vehicle VIN via NHTSA vPIC: make, model, year, trim, body class, engine, fuel, plant, and vehicle type. Accepts full or partial VINs (partial needs modelYear). Live gov data, no key. ?vin=1HGCM82633A004352 | agent402.tools | - | $0.004 | listed |
| Agent402.tools Latest US Treasury daily constant-maturity yields (1mo, 3mo, 6mo, 1y, 2y, 3y, 5y, 7y, 10y, 20y, 30y) as clean JSON. Source: FRED DGS* series (St. Louis Fed), public domain, no key. No params - always returns the most recent published curve. | agent402.tools | - | $0.01 | listed |
| Agent402.tools Characters, words, sentences, paragraphs, average word length, reading time, and an LLM token estimate for any text. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Cryptographically secure randomness. ?bytes=1..1024 returns hex; or ?min=&max= returns a uniform integer; ?count=1..100. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Fetch page metadata for a URL: title, description, OpenGraph, Twitter cards, canonical URL, favicon. | agent402.tools | - | $0.002 | listed |
| Agent402.tools LLM inference proxy - send an OpenAI-format chat/completions request and get a response from GPT-4o-mini. Supports vision (up to 2 image URLs, low detail) and structured output (response_format: json_object or json_schema). No API key needed; pay ... | agent402.tools | - | $0.01 | listed |
| Agent402.tools Synthesize a JSON response body for one operation + status code in an OpenAPI 3.x or Swagger 2.x spec. Locate the operation by operationId or method+path. Pick the response by explicit `status`, else the first 2xx, else the first documented respon... | agent402.tools | - | $0.002 | listed |
| Agent402.tools Convert an integer (1-3999) to Roman numerals, or a Roman numeral back to an integer. Auto-detects direction. | agent402.tools | - | $0.001 | listed |
| Agent402.tools OpenAI-compatible text embeddings over x402 - point any OpenAI SDK at base_url https://agent402.tools/v1 and pay $0.002 per call in USDC, no API key, no signup. Batch up to 64 inputs / 16k chars per request; text-embedding-3-small by default (3-la... | agent402.tools | - | $0.002 | listed |
| Agent402.tools Search public Certificate Transparency logs (via crt.sh) for every cert issued to a domain. Returns the cert list plus a deduped subdomain set extracted from the SANs - the fastest way to enumerate subdomains for a security audit. Free upstream, n... | agent402.tools | - | $0.005 | listed |
| Agent402.tools Resolve a US stock ticker (e.g. AAPL) to its SEC CIK number, the primitive every other EDGAR call needs. Returns CIK in both zero-padded (0000320193) and integer form, plus the registered company name. Backed by SEC's company_tickers.json (public ... | agent402.tools | - | $0.005 | listed |
| Agent402.tools Domain registration data via RDAP (the structured WHOIS successor): registrar, creation/expiry dates, status, nameservers. | agent402.tools | - | $0.005 | listed |
| Agent402.tools Build a runnable curl command for one operation in an OpenAPI 3.x or Swagger 2.x spec. Locate the operation by operationId (preferred) or by method + path, substitute path parameters using the spec's example values, include required query and head... | agent402.tools | - | $0.002 | listed |
| Agent402.tools Your own purchase history, keyed to the wallet that pays for the call - no wallet parameter, no signup: the x402 payment IS the identity, so nobody can read another wallet's profile. Returns totals, per-tool counts, per-chain breakdown, and recent... | agent402.tools | - | $0.005 | listed |
| Agent402.tools Option chain for a US-listed ticker: all listed expiration dates, the strike ladder, and per-contract bid/ask/last/volume/open-interest/implied-volatility for calls and puts at one expiry (nearest by default, or pass `expiration` as YYYY-MM-DD). B... | agent402.tools | - | $0.005 | listed |
| Agent402.tools Placeholder text. ?paragraphs=1..20 or ?words=1..2000. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Count exact LLM tokens for a string using the real OpenAI BPE (o200k_base for gpt-4o/o-series, cl100k_base for gpt-4/gpt-3.5). Deterministic, offline - budget context windows without calling a model. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Caesar-cipher a string. Default shift 13 (ROT13, self-inverse). Set shift for any rotation 1-25. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Compress a string with Brotli (RFC 7932) and return it as base64. Brotli typically beats gzip by 15-25% on text - useful when bytes matter (e.g. cramming context into an LLM prompt, fitting under a transport cap). Slower than gzip; pick gzip if sp... | agent402.tools | - | $0.001 | listed |
| Agent402.tools DNS lookup for a domain. Supported record types: A, AAAA, MX, TXT, NS, CNAME. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Convert a color between hex, RGB, and HSL. Accepts "#1a2b3c", "rgb(26,43,60)", or "hsl(210,40%,17%)". | agent402.tools | - | $0.001 | listed |
| Agent402.tools Convert between epoch (s or ms), ISO 8601, and any IANA timezone. Give a value, get every representation back. | agent402.tools | - | $0.001 | listed |
| Agent402.tools Generate a text embedding vector using OpenAI text-embedding-3-small (1536 dimensions). Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars. | agent402.tools | - | $0.005 | listed |
| Agent402.tools Current weather conditions for any location on Earth: temperature, feels-like, humidity, wind speed/direction/gusts, precipitation, cloud cover, pressure, and human-readable condition. Open-Meteo, no key, global. ?lat=48.86&lon=2.35. | agent402.tools | - | $0.003 | listed |
| Agent402.tools Top N coins by market capitalization with full market snapshot per coin: rank, price, 24h change, 7d change, 24h volume, market cap, circulating supply, and all-time high. Default 10, max 100 per call. Backed by CoinGecko's public API. | agent402.tools | - | $0.015 | listed |
| Agent402.tools AI-generated answer to a natural-language question, grounded in live web search results with source citations. Returns clean prose plus a structured citations array (URL, snippet, favicon) - backed by an independent search index, not the model's t... | agent402.tools | - | $0.08 | listed |
| Agent402.tools Bundled execution of the Answer-a-question with sources workflow - The 'research a question, return an answer with citations' workflow. Brave answer for the AI-synthesized take with citations, Brave web for the canonical SERP, Brave news for time-... | agent402.tools | - | $0.65 | listed |
| Agent402.tools Bundled execution of the Macro economics workflow - Pull the canonical US macro dataset - yield curve, CPI, unemployment, fed funds, Sahm rule - without an API key. One x402 payment runs 7 underlying tools (treasury-yield-curve, yield-curve-spread... | agent402.tools | - | $0.65 | listed |
| Agent402.tools OpenAI-compatible chat completions over x402 - point any OpenAI SDK at base_url https://agent402.tools/v1 and pay per call in USDC (Base, Solana, Polygon, Arbitrum, Stellar), no API key, no signup. Budget/mid models: gpt-4o-mini, claude haiku, gem... | agent402.tools | - | $0.02 | listed |
| Agent402.tools Execute Python or JavaScript code in a secure, isolated cloud sandbox (Pro tier). Same as /api/code-run but with 60s timeout and 50k char code limit for longer computations. Returns stdout, stderr, and the expression result. | agent402.tools | - | $0.05 | listed |