Return-on-investment and compound-growth calculator: supply an initial amount, rate, and time horizon to get final value, total interest earned, and effective annual yield. For comparing savings accounts, investment scenarios, and loan offers where exact compounding matters more than an estimate. Results are reproducible and auditable call to call.

Contract addresses for tokenized real-world assets on Robinhood Chain, an Arbitrum-Orbit L2 where equities like AAPL, NVDA, and TSLA trade as ERC-20 tokens. Returns address, asset kind, and price-feed reference per symbol so an agent can verify what it is interacting with before touching any contract.

Scripture reference resolver: pass a reference string and get back the exact King James Version text, verse by verse, from locally hosted public-domain data. Supports single verses and same-chapter ranges.

Current sea state at any latitude/longitude over open water — wave height, wave period, swell height, and sea surface temperature — as structured JSON. Use for route planning, offshore work-window checks, and surf or sailing condition agents. Inland and near-coast points may return no data if outside model coverage.

Generates unambiguous alphanumeric secrets, hex strings, and UUIDs from OS-grade entropy in a single call, with length and batch size configurable. For provisioning temporary credentials, signing keys, and identifiers in automated pipelines that need real randomness rather than a plausible-looking string guessed by a model.

Live feed of recent earthquakes worldwide above a magnitude threshold you set — location, magnitude, depth, timing, and tsunami risk flag, refreshed every few minutes. Built for risk-monitoring dashboards, insurance trigger logic, and news or alerting agents that need to react to seismic events as they happen.

Semantic vector generation: turns batches of text (up to 64 per request) into dense 768-dimension embeddings ready to feed into a vector database or similarity search index. Runs without any external API key or subscription, pay only for the call. Well suited for building RAG retrieval layers, clustering related content, or scoring how similar two passages are.

All currently active severe weather warnings, watches, and advisories for a given US state — event type, severity, urgency, the specific zones affected, and the full alert text — as normalized JSON. Built for logistics rerouting, outdoor-event cancellation logic, and safety-notification agents. US coverage only, refreshed every 5 minutes.

Computes a SHA-256 digest of any input text and returns it as a hex string, computed locally with no network round-trip to a third party. Also supports SHA-512, SHA-1, and MD5 on request. Useful for content fingerprints, cache keys, and deduplication logic where the same input must always produce the exact same output.

Social share metadata lookup: reads a web page's title, canonical link, favicon, author, and social-card tags (Open Graph and Twitter formats) and returns them as one normalized JSON object. Safe against internal-address requests. Handy for SEO checks, content management systems, and any tool that needs to know how a URL will look when shared.

Slang lookup and browse API: query a specific term or sample random entries from one generation's vocabulary — each entry carries a one-sentence meaning, its origin generation, approximate era, and an example sentence. Local curated dataset, same answer every time for the same term.

Translate slang across generations: send any term — rizz, no cap, adulting, gnarly, groovy — and get its plain-English meaning, the generation that coined it, the era, and a natural example sentence. Fuzzy matching finds partial terms, so agents can decode messages without exact spelling.

Space weather notification digest: the official space-weather advisories issued over roughly the last week — type, issue time, source link, and full message text covering solar flares, CMEs, geomagnetic storms, and radiation events. For infrastructure-risk briefings and space-weather newsletter agents.

The last 30 days of solar flare events by class (A through X), with begin, peak, and end times and the source active region — the space weather that can disrupt GPS accuracy, satellite links, and power grids. For infrastructure-risk monitoring and aviation or communications planning agents. Refreshed every 3 hours.

Equation solver API: solve linear (ax+b=0), quadratic (ax²+bx+c=0, with real OR complex roots and the discriminant), and 2×2 linear systems — from structured numeric coefficients, not a parsed string. Exact roots every time. For engineering, education, and scientific agents.

Asteroid close-approach API: every known near-earth object passing Earth this week — size estimates, closest-approach date and miss distance, velocity, and the potentially-hazardous classification, as structured JSON. Use for space-risk dashboards, science content, education agents, and novelty feeds. Cached 6 hours.

Astronomy photo of the day API: today's featured space image with title, high-res URL, and the full astronomer-written explanation, as JSON. Use for daily content feeds, newsletters, screensaver bots, and education agents. Cached 6 hours.

Solar storm API: the last 30 days of solar flare events — class (A/B/C/M/X), begin/peak/end times, and source region — the space weather that degrades GPS, satellite communications, and power grids. Use for infrastructure-risk monitoring, aviation/comms planning, and science agents. Cached 3 hours.

Consolidated space-weather notifications digest: solar flares, coronal mass ejections, geomagnetic storms, radiation-belt enhancements and interplanetary shocks, each with an official report ID, issue time, and full message text. Broader than a flares-only feed — one call briefs an agent on all current solar activity affecting GPS, HF comms, and satellite operations. Covers the most recent seven days.

Space weather events API: recent solar flares with class, peak time, and source region — the events that disrupt GPS accuracy, satellite links, and HF radio. Normalized JSON for infrastructure-risk and comms agents.

Speech audio generator: reads any block of text aloud and returns the result as a downloadable WAV file, selectable across ten built-in voice presets. Pay-per-call with no subscription or stored text. Useful for narrating short-form content, generating spoken alerts, or producing sample audio for voice-agent testing.

Speech-to-text API: audio URL in, transcript out — a neural speech-recognition engine on our own hardware, ~99 languages, mp3/wav/m4a/ogg up to 25MB. For voicemail, podcast, meeting, and voice-agent pipelines. Audio deleted after processing.

SSL certificate API: inspect any domain's TLS certificate — issuer, subject, validity window, days until expiry, SAN list, and whether it currently validates — including expired or invalid certs (the ones you most need to see). For uptime monitors, renewal alerting, and security-screening agents run on a schedule.

Statistical summary calculator for a list of up to 100,000 numbers: standard deviation, variance, mean, median, mode, min/max, and range computed exactly. For QA sampling, monitoring dashboards, experiment analysis, and any agent that needs a trustworthy spread measurement instead of an eyeballed guess.

Is the on-chain price for a tokenized equity trustworthy right now? Runs staleness, positive-answer, and round-validity checks against the asset's price feed on Robinhood Chain and returns a single status verdict plus per-check detail. For agents that gate downstream decisions on oracle freshness.

On-chain metadata for a Robinhood Chain stock token: verified contract address, ERC-20 name and decimals, total supply in both raw and human units, plus the token's oracle price snapshot. Case-insensitive symbol matching; large integers returned as strings to survive JSON round-trips without precision loss.

Curated on-chain registry lookup for Robinhood Chain stock tokens: 20 equities and 5 ETFs with canonical contract addresses sourced from official documentation, plus chain id, public RPC endpoint, and block explorer. Deterministic and cacheable — the same catalog every call until the registry is re-verified.

Converts between grams, moles, and molecule count for any chemical formula using its molar mass and Avogadro's number — give either grams or moles and get all three back. For stoichiometry problem sets, lab reagent prep, and chemistry-tutoring agents that need exact conversions, not approximations.

Active storm watches, warnings, and advisories issued for any US state, including severity, urgency level, affected zones, and full alert text. Use it to trigger automated safety notifications or delivery-delay logic ahead of severe weather. Covers the United States only; alert data refreshes every 5 minutes.

Sun & moon API: sunrise, sunset, solar noon, evening golden hour, moon phase name, and moon illumination fraction for any latitude/longitude and date — computed locally, instant, no upstream. For photography scheduling, agriculture, solar estimation, astronomy content, and outdoor-event agents.

Sunrise and sunset API: sun times (sunrise, sunset, solar noon, golden hour) plus moon phase and illumination for any coordinates and date, computed instantly. For photography, agriculture, solar, and outdoor-planning agents.

Category-first view of the x402swag.com storefront: apparel, drinkware, stickers, crew-necks, and v-necks, each with its items and price ranges, plus the store's real purchase flow (free browse/checkout, dynamic x402/card settlement, or the store's $0.05 one-call shortcut). Optional category filter.

Live catalog of the x402swag.com storefront: product categories, items with price ranges, and exactly how to buy — free browse/cart/checkout, dynamic-price settlement via x402 USDC or card, and the store's own $0.05 one-call agent shortcut. Optional category filter (apparel, drinkware, stickers, crew-necks, v-necks).

Tech news pulse API: the current 30 top-ranked tech stories from the leading hacker community front page — title, outbound article URL, points, author, comment count, and ISO timestamps as normalized JSON. Use for tech trend detection, topic monitoring, newsletter pipelines, and content agents. Cached 3 minutes.

Temperature conversion API: any of Celsius, Fahrenheit, Kelvin, or Rankine to all four at once. Science-grade, exact.

Generates a deterministic checksum, SHA-256, SHA-512, SHA-1, or MD5, for any block of text, returned as a hex digest with no storage or logging of the input. For pipelines that need to detect whether two pieces of text are byte-for-byte identical without re-reading and comparing them token by token.

Text embeddings API without an API key: up to 64 texts per call, 768-dimension embedding vectors computed on our own hardware. For semantic search, clustering, dedup, and RAG. Pay per call with USDC over x402; inputs never stored.

Text statistics API: characters, words, sentences, average sentence length, Flesch reading-ease score, estimated reading time, and estimated LLM token count for any text — instant, computed locally, nothing stored. For context-budget checks, readability gates, and content QA in agent pipelines.

Text-to-speech API: convert up to 2000 characters into natural speech (WAV, base64) using our locally-hosted neural speech engine — no API keys, pay per call with USDC. Choose voices F1-F5/M1-M5. Use for voice agents, notifications, audio content, and IVR. Text never stored. Full 20-voice / 31-language tiered product at voice.forgemesh.io.

Vector embeddings API: converts up to 64 pieces of text per call into 768-dimensional numeric vectors suitable for similarity comparison, no separate provider account or key needed. Pay per call in USDC, and nothing submitted is retained afterward. Use it to build semantic search indexes, cluster related documents, or de-duplicate near-identical text at scale.

This day in history API: notable events that happened on any month/day — the year, a one-line description, and links to fuller articles, as structured JSON. A renewable daily-content source for newsletters, social bots, trivia games, and engagement agents. CC BY-SA with attribution included. Cached 24 hours.

Returns the exact current time in any IANA timezone, local ISO timestamp, UTC equivalent, unix epoch, human-readable string, and day of week, computed live rather than estimated from training data. For agents coordinating across regions or logging events with an authoritative timestamp.

Timezone conversion API: what is 3pm Tokyo time in Chicago? Convert wall-clock time between IANA zones with DST handled correctly, plus UTC and unix epoch.

TLS certificate expiry API: days until any domain's certificate expires, plus issuer, subject, SANs, and validity status — even for already-broken certs. The check monitoring agents run daily.

Today's scripture reading, deterministic by UTC date and served from locally hosted public-domain KJV text. Optional date input replays any day's verse.

List every verified tokenized equity and ETF contract live on Robinhood Chain — symbol, contract address, and oracle price-feed address per entry, with the official source URL and verification date included for audit. For agents mapping the tokenized real-world-asset landscape.

Current USD oracle price for a tokenized equity on Robinhood Chain — AAPL, NVDA, TSLA, SPY and 21 more — with the raw fixed-point answer, feed decimals, update timestamp, and an explicit stale/fresh verdict so an agent can decide whether the quote is usable. Unknown tickers return the full list of supported symbols.

The current top 30 tech stories ranked by community interest, each with title, outbound article link, point score, author, and comment count as normalized JSON. Built for trend-detection bots, tech newsletter pipelines, and content agents that want a snapshot of what the tech community is discussing right now. Refreshed every 3 minutes.

Pull a structured summary for any known topic — short description, lead paragraph, thumbnail, and source URL — from a continuously updated, community-maintained knowledge base. Accepts titles with spaces or underscores. Built for research agents and chatbots that need quick, grounded background on a person, place, or concept.

Nationwide tornado warning and watch feed: every currently active US tornado warning or tornado watch — affected zones, severity, urgency, and full alert text — as normalized JSON, refreshed every 2 minutes. Built for safety-notification and logistics-halt agents that need the fastest possible signal on tornado activity.