Every agent-payable API.

EU public procurement tender search (TED) - title, buyer, CPV codes, publication date and deadline

Electric vehicle range estimate from battery capacity, consumption and reserve - kilometers and miles

Superfund sites near an address or coordinates (EPA NPL) - status, distance, hazard score and cleanup dates

Radon potential for a U.S. address or coordinates (USGS and EPA) - low, moderate or high with screening range

Geocode a street address or landmark to latitude and longitude - up to five ranked results with country, region and type (OpenStreetMap)

Snowpack near a western U.S. or Alaska location (SNOTEL) - snow water equivalent, depth and percent of median

FDA food recall search (openFDA) - product, reason, firm, classification and status

FDA medical device recall search (openFDA) - product, reason, firm, classification and status

FDA drug recall search (openFDA) - product, reason, firm, classification and status

Film Facts: director, cast, release, runtime, box office (Wikidata). Film facts from Wikidata: release date, runtime, directors, writers, cast, genres, countries, language, composer, producers, studios, box office, budget, IMDb and Wikipedia links; disambiguate with year.

Final exam score-needed calculator from current score, target and exam weight

Solunar fishing and hunting forecast - moon phase, illumination and major and minor activity windows

Packaged food lookup by UPC or EAN barcode - name, brand, ingredients, allergens, Nutri-Score and nutrition facts

Fossil taxon lookup (Paleobiology Database) - classification, occurrences and geological age range

Freight class hint from weight and dimensions - volume, density and NMFC density class

Fundraising dilution calculator - post-money valuation and investor and holder ownership after the round

Fundraising dilution calculator - post-money valuation and investor and holder ownership after the round

GPA calculator from grade-point and credit-hour arrays - quality points, credits and GPA

GS1 SSCC-18 logistics-unit validator - check digit, payload and serial reference

Planting window dates from local frost dates and crop maturity - indoor start, transplant and harvest

Weekly EIA retail fuel prices - regular and premium gasoline and diesel, national or by area

Genealogy lookup for a notable person - birth and death, parents, spouses, children and siblings (Wikidata)

Grammar & Spelling Check (30+ languages). Grammar, spelling and style check in 30+ languages (auto-detected): each issue with message, category, position and suggested replacements, plus a corrected version of the text. Powered by LanguageTool.

Grant fit score - eligible-cost ceiling, required cash match, match gap and request-to-budget risk

Great-circle (Haversine) distance between two coordinates in kilometers and miles

Great-circle midpoint between two coordinates - latitude and longitude

Trading-Bot Profitability Auditor. A procedure for auditing whether a trading bot is genuinely profitable: defining an accounting boundary that separates deposits/withdrawals from trading PnL, reconstructing every round trip from confirmed exchange/chain records (not bot logs), computing robust metrics (expectancy, profit factor, tails, drawdown, concentration) instead of headline win rate, auditing backtests for look-ahead and selection bias, comparing predicted vs.

Solana Token Authority Decoder. A procedure for producing a mint-specific Solana token authority report: resolving the exact mint and program (SPL Token vs Token-2022), decoding mint/freeze authorities, enumerating Token-2022 extensions (transfer hooks, permanent delegate, default account state, close authority), separating metadata/update authority from supply economics, and analyzing controller addresses (multisig/PDA/program) — without inferring safety from any single revoked authority.

Meteora and Orca LP Exit Resolver. A procedure for resolving a failed Meteora/Orca LP withdrawal, harvest, close, or zap-out: verifying position ownership and protocol identity, inventorying liquidity/fees/rewards/lock state and range/bin composition, reading the first failing instruction from simulation logs rather than the generic wallet error, using the official manual harvest-then-withdraw-then-close sequence instead of a risky bundled zap, and reconciling token/SOL/rent balances before…

Building an AI Agent That Pays for Data: A Practical x402 Walkthrough. A working implementation walkthrough for an AI agent consuming an x402-gated API: reading the 402 response and its accepts array, choosing a payment method (facilitator-settled transaction vs self-submitted reference), building the payment, and handling the settlement-lag retry loop — using this site’s own live Watchdog endpoints as the worked example.

Token Holder and Rug-Risk Analyzer. A procedure for producing a time-stamped token-risk report: classifying holder accounts (excluding pools/vaults/burn/vesting from raw wallet counts), measuring concentration and linked-wallet clusters with evidence and confidence rather than assertion, verifying liquidity custody and lock mechanisms on-chain (not by marketing claim), decoding authorities/extensions/trading restrictions, and issuing a scorecard that exposes reasons and data gaps instead of a…

Document Parsing, OCR, and Layout Quality. A document-extraction procedure that distinguishes native text from OCR, preserves page/bounding-box provenance, detects broken reading order and tables, exposes per-field confidence, and routes uncertain high-impact fields to visual review instead of trusting average OCR accuracy.

Agent Retry and Idempotency Guide. A procedure for preventing duplicate side effects (payments, messages, orders, files) when agents retry after timeouts: defining a stable logical-operation key scope bound to a canonical payload hash, building a durable state machine (not a boolean flag), placing the side effect inside an atomic boundary, classifying retryable vs terminal errors, and handling same-key/different-payload conflicts explicitly rather than silently.

Solana Priority Fee and MEV Execution. An execution record and policy that separates base fee, compute-unit limit/price, tips or route fees, slippage and price impact, simulation, inclusion latency, failures, and realized output, then selects bounded fees from transaction value and measured conditions.

Mastering LoRaWAN for IoT Projects. An overview of LoRaWAN for IoT: the architecture (end nodes, gateways, network server handling de-dup/ADR, application server), the power-vs-latency tradeoffs of Class A/B/C devices, typical 2–15 km range, and real-world uses in agriculture, smart cities, asset tracking, and industry.

Cross-Chain Wallet Activity Monitor. A chain-aware wallet event feed that validates network and address, defines inbound/outbound/contract/approval/bridge activity, records authoritative transaction evidence, handles finality and reorganizations, and delivers normalized alerts with raw provenance.

Mapping a New URL in Google Sites. How an admin maps a custom URL to a new Google Site: the requirements (new Sites only, public sharing, subdomain-to-primary-domain rule, 2,000-address limit), the Admin console steps, and CNAME verification — with auto-provisioned domain-validated SSL.

Queue and Event Delivery Reliability. An event contract and consumer design that records immutable identity, validates schema, processes idempotently, handles ordering and retries, quarantines poison events, and reconciles producer-to-consumer outcomes.

Backup and Restore Drill. A recovery evidence package that maps business services to protected data, verifies backup integrity and isolation, restores into a clean environment, runs application checks, measures RPO/RTO, and records gaps and owners.

Forwarding Your Google Domain to a URL or IP. How to forward a Google-managed domain to another URL or IP: the Google Domains forwarding steps, choosing permanent (301) vs temporary (302) redirects and path forwarding, verifying propagation, and locating the synthetic DNS record that powers (and can break) forwarding.

Solana Token Launch Monitor. A launch-monitor pipeline that defines what counts as a launch, observes multiple on-chain event paths, backfills gaps, resolves token and pool identity, enriches risk without delaying the base alert, and proves no duplicate or silently lost accepted events.

Scheduled and Durable Agent Workflows. A schedule and workflow definition that survives restarts, handles missed or duplicate triggers, resumes from checkpoints, prevents overlapping side effects, and proves cancellation, timeout, recovery, and end-to-end delivery.

NFT Authenticity and Spam Triage. A no-signature triage procedure for an unexpected NFT: recording the asset without clicking any link or signing anything, verifying on-chain collection/creator/update-authority identity against official sources (never against the NFT's own metadata), inspecting off-chain metadata URIs in isolation, and classifying the asset as verified authentic, likely spam/phishing, unverified, or program-specific before choosing a safe hide/burn/ignore action.

Setting Up the Naked Domain for Your Google Site. Step-by-step setup of a naked (bare) domain redirect for a Google Site: configuring the redirect in the Google Admin console, adding A records at your registrar that point to Google's IPs, and the constraints (only primary domains can be redirect targets; up to 48h propagation).

SEO and Structured-Data Generator. Page-specific metadata, canonical/index rules, sitemap entries, and JSON-LD that describe visible truthful content, validate technically, remain consistent across variants, and can be monitored after publication.

Repurposing an Old GPU for Crypto Mining. Getting an old GPU mining: checking profitability against electricity cost on whattomine.com, updating drivers, choosing NVIDIA mining software (T-Rex, GMiner, NBMiner), creating a wallet and joining a pool, configuring the miner, and undervolt/overclock tuning while keeping the GPU under 85°C.

Vendor and API Dependency Risk. A dependency register and control plan that classifies criticality, verifies authority and data flow, measures reliability/cost/change behavior, tests failure and exit, and prevents one vendor from silently controlling the product.

Installing the Duino-Coin Repo on Linux Desktop. Setting up Duino-Coin mining on a Linux desktop: installing Python and image-library dependencies via apt, cloning the official revoxhere/duino-coin repo, installing its Python requirements, and where to configure a wallet — with notes on CPU, AVR/Arduino, and ESP8266/ESP32 mining.

Credential and Secret Rotation. A secret inventory and phased rotation plan that identifies owners and consumers, creates scoped replacement credentials, supports overlap where safe, updates and verifies dependencies, revokes old access, and proves no stale copy remains active.

Ubuntu VPS Production Baseline. A reproducible Ubuntu 24.04 server baseline with verified administrative access, patch policy, firewall, service isolation, time/logging, monitoring, backups, recovery access, and an evidence-backed hardening report.