# Foundry NWS Two-Site Operating Conditions Comparison > Foundry NWS Two-Site Operating Conditions Comparison is a paid API for AI agents from foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-15). Compares NWS forecast data for two geographic sites against user-defined weather thresholds to determine aligned operating windows over a specified time period. ## Facts - Endpoint: POST https://foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev/v2/official/nws-two-site-operating-comparison - Price: $0.012/call - Payment: x402 - Status: unknown - Last checked: 2026-09-15 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/foundry-nws-two-site-operating-conditions-comparison-e1e228fd - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_51pxoWIb2TjgWHjVaR-nI Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability foundry-nws-two-site-operating-conditions-comparison-e1e228fd -d '' ``` Example prompt: Check if both my Denver site (40.0150° N, 105.2705° W) and my Topeka site (39.7456° N, 97.0892° W) will have matching acceptable weather conditions over the next 12 hours — I need wind under 25 kph, temperatures between 5°C and 30°C, and precipitation probability below 30%. ## When to prefer this Use this endpoint when you need to find time windows where two geographically distinct US locations simultaneously meet weather operating thresholds — especially for coordinating field operations, scheduling outdoor work, or planning multi-site events. Prefer this over single-site NWS forecast endpoints when the key question is alignment between two locations, not just one site's conditions. Best for US locations with NWS grid coverage; not suitable for international weather comparison. ## Known failure modes - Coordinates outside NWS coverage area (non-US locations) return empty periods or coverage_complete: false - NWS API unavailability causes empty period arrays with UNKNOWN comparison status - Duration or start window exceeding 24 hours or 120-hour lookahead rejected with validation error - Invalid latitude/longitude ranges (>90 or >180) rejected at schema validation - Very close sites may share the same NWS forecast grid resource, flagged as same_forecast_resource: true - Partial NWS grid coverage returns UNKNOWN periods rather than match/nonmatch determinations ## How this service works Pay-per-request evidence and data tools: CSV validation and reconciliation, DNS/email configuration evidence, and bounded official weather, earthquake, vehicle, company and study records. Exact USDC prices, explicit JSON contracts and source provenance. No mailbox, ownership, medical or safety guarantees. ## Output Returns a JSON object with per-site forecast periods sourced from NWS, aligned time windows labeled as MATCH, NONMATCH, or UNKNOWN, per-site duration summaries (match_minutes, nonmatch_minutes, unknown_minutes), combined both_match duration, the applied thresholds, source provenance URLs, and NOAA attribution. Coverage completeness flags indicate if full NWS data was available for each site. ## Request schema (JSON Schema) ```json { "type": "object", "properties": { "site_a": { "type": "object", "required": [ "latitude", "longitude" ], "properties": { "latitude": { "type": "number", "maximum": 90, "minimum": -90 }, "longitude": { "type": "number", "maximum": 180, "minimum": -180 } }, "additionalProperties": false }, "site_b": { "type": "object", "required": [ "latitude", "longitude" ], "properties": { "latitude": { "type": "number", "maximum": 90, "minimum": -90 }, "longitude": { "type": "number", "maximum": 180, "minimum": -180 } }, "additionalProperties": false }, "max_wind_kph": { "type": "number", "maximum": 400, "minimum": 0 }, "duration_hours": { "type": "integer", "default": 12, "maximum": 24, "minimum": 1 }, "max_temperature_c": { "type": "number", "maximum": 60, "minimum": -100 }, "min_temperature_c": { "type": "number", "maximum": 60, "minimum": -100 }, "start_hours_from_now": { "type": "integer", "default": 0, "maximum": 120, "minimum": 0 }, "max_precipitation_probability": { "type": "number", "maximum": 100, "minimum": 0 } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "route": "nws-two-site-operating-comparison", "result": { "sites": [ { "site": "A", "source": { "url": "https://api.weather.gov/gridpoints/TOP/31,80/forecast/hourly", "updated_at": null, "retrieved_at": "2026-09-06T00:00:00Z", "cache_age_seconds": 0 }, "periods": [], "location": { "latitude": 39.7456, "longitude": -97.0892 }, "coverage_complete": false }, { "site": "B", "source": { "url": "https://api.weather.gov/gridpoints/TOP/31,80/forecast/hourly", "updated_at": null, "retrieved_at": "2026-09-06T00:00:00Z", "cache_age_seconds": 0 }, "periods": [], "location": { "latitude": 40.015, "longitude": -105.2705 }, "coverage_complete": false } ], "terms_url": "https://www.weather.gov/disclaimer", "thresholds": { "max_wind_kph": 25, "max_temperature_c": 30, "min_temperature_c": 5, "max_precipitation_probability": 30 }, "attribution": "NOAA / National Weather Service; normalized by Foundry; no endorsement", "limitations": [ "Synthetic example only. Forecast evidence, not a safety assessment. Unknown coverage is not a match." ], "aligned_periods": [ { "end": "2026-09-06T12:00:00Z", "start": "2026-09-06T00:00:00Z", "comparison": "UNKNOWN", "site_a_status": "UNKNOWN", "site_b_status": "UNKNOWN" } ], "duration_minutes": { "site_a": { "match_minutes": 0, "unknown_minutes": 720, "nonmatch_minutes": 0 }, "site_b": { "match_minutes": 0, "unknown_minutes": 720, "nonmatch_minutes": 0 }, "both_match": 0 }, "requested_window": { "end": "2026-09-06T12:00:00Z", "start": "2026-09-06T00:00:00Z" }, "same_forecast_resource": true }, "observed_at": "2026-09-06T00:00:00Z" } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/foundry-nws-two-site-operating-conditions-comparison-e1e228fd/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev](https://www.zero.xyz/host/foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev/llms.txt)