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Add time to an ISO date. Call for deadlines, reminders, and SLA offsets without timezone libraries. Returns the shifted ISO timestamp (local pure parse; no calendar API). $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Median of numbers. Use for robust central tendency when outliers pollute averages. Returns the median of the provided numeric list. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

CSV header row. Use to map columns before import or transformation steps. Returns the first-row headers as a list. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Parse a URL into parts. Call when splitting host, path, query, and fragment without fetching the URL. Returns structured URL parts; never performs network I/O. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Factorial (n≤20). Call for combinatorics demos and small counting problems with an explicit n cap. Returns n! for n up to 20; larger n returns a structured error. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

URL-encode a component. Use before building query strings or safe path segments. Returns encodeURIComponent-style output for the input text. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Arithmetic mean of numbers. Call when summarizing metrics, scores, or sensor lists mid-pipeline. Returns the mean of a numeric array as JSON. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Greatest common divisor. Handy for ratio simplification, scheduling grids, or math agents without local bigint helpers. Returns GCD of two integers as structured JSON. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

JSON root type and size. Use as a cheap preflight before heavier JSON processing. Returns root type (object/array/…) and a size signal. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Chunk a JSON array. Use to batch tool calls, page results, or stay under payload limits. Returns array chunks with the requested size (bounded input). $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Nth Fibonacci (n≤78). Use for sequences, demos, or test fixtures without shipping a math package. Returns F(n) for n up to 78 with a structured receipt. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Difference between two dates. Use for aging tickets, session duration, or SLA breach math. Returns the delta between two ISO timestamps in structured units. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Leap year check. Use for date validation and calendar math without external data. Returns a boolean leap-year result for a Gregorian year. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Standard deviation. Call for simple volatility or spread checks on agent-collected samples. Returns population/sample stdev fields depending on input flags. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Format an ISO date. Call when agents need a simple display pattern for reports or messages. Returns a formatted date string from an ISO input. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

List top-level JSON keys. Call when agents must discover object shape without full schema inference. Returns top-level keys of a JSON object. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Percentile of a list. Use for p50/p95 style summaries without a stats stack. Returns the requested percentile of a numeric array. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

Tests whether a counterparty agent's input handling resists prompt-injection and content-trap patterns — a concrete resilience check, not a compliance checkbox.

Paid MCP endpoint — POST a JSON-RPC tools/call to get_content for public profile data (github, twitter, linkedin).

Foreign exchange reference rates from the European Central Bank. Base currency plus optional symbols filter. Updated daily on ECB schedule. JSON response. $0.002 USDC per call, pay via x402, no API key.

Trading and dispatch agents buy this endpoint to obtain the current German EPEX spot price for immediate decisions.

Before your agent stores or messages a phone number: validate and normalize it offline — E.164 formatting, region, national format and line type from Google's libphonenumber metadata, no network call

AI model capability, specs and limits table for 2,000+ LLMs — GPT-5, GPT-4o, Claude 5, Claude Sonnet, Gemini 3 Pro, Llama 4, DeepSeek V4 and more: context window size, max output tokens, vision/audio/function-calling/reasoning support. Compare model constraints side-by-side across every provider to pick the right model for long-context, multimodal, or tool-use workloads. Refreshed hourly.

Collects the physical and legal restrictions recorded in OpenStreetMap within a corridor around the straight line between two points, or around a single point, and decides for each one whether it stops the vehicle described in the request. The work is in reading the values.