Home/API Reference
122 endpoints.
One platform.
Use the unified report for a complete property risk picture in a single call — or call individual peril endpoints for targeted drill-down. 122 endpoints, 113 MCP tools, 36 federal sources. Every response is DOI-defensible, transparent, structured JSON.
GET
https://api.gridlogix.io/v2
Platform
122 Endpoints
23 Tag Groups
12 Indices
Performance
<300ms Endpoints
AsyncIO
PostGIS
Trust
DOI-Defensible
JWT Auth
Live response preview Fort Pierce, FL · St. Lucie County
live
// GET /risk/report?lat=27.374&lon=-80.427 — Fort Pierce, FL
{
"risk_summary": {
"peak_peril": "tornado", "peak_peril_score": 60.39,
"composite_score": 32.78, "composite_tier": "Moderate",
"expected_annual_loss_usd": 5088045.14,
"uw_flags": [
{ "peril": "tornado", "severity": "High" },
{ "peril": "flood_history", "severity": "High",
"detail": "20 Zone X claims in tract" },
{ "peril": "repetitive_loss", "severity": "High" }
]
},
"peril_scores": {
"tornado": 60.39, "wind": 58.42, "flood": 34.0,
"hail": 21.02, "earthquake": 20.03, "wildfire": 20.0
},
"transparency": {
"all_doi_defensible": true, "sources_used": 17
}
}
{
"risk_summary": {
"peak_peril": "tornado", "peak_peril_score": 60.39,
"composite_score": 32.78, "composite_tier": "Moderate",
"expected_annual_loss_usd": 5088045.14,
"uw_flags": [
{ "peril": "tornado", "severity": "High" },
{ "peril": "flood_history", "severity": "High",
"detail": "20 Zone X claims in tract" },
{ "peril": "repetitive_loss", "severity": "High" }
]
},
"peril_scores": {
"tornado": 60.39, "wind": 58.42, "flood": 34.0,
"hail": 21.02, "earthquake": 20.03, "wildfire": 20.0
},
"transparency": {
"all_doi_defensible": true, "sources_used": 17
}
}
Start with the right endpoint
Four entry points cover most underwriting workflows.
Unified Report
All perils in parallel — scores, UW flags, expected loss, full transparency block.
GET /risk/report
11 Perils Covered
Flood · Wind · Wildfire · Wildfire (CA) · Earthquake · Hail · Tornado · Lightning · Coastal · Sinkhole/Karst · Landslide
122 endpoints total
Actual Loss Data
2.7M NFIP claims, SRL flags, 30 years of Storm Events — actual losses, not models.
GET /loss-history/master
DOI-Defensible
Every formula documented. Full source provenance on every response. No black box.
GET /methodology/statement
Proprietary Risk Intelligence
12 endpoints
GridHazard composite indices built on 32 federal sources. Peril scores 0–100, adjustable composite weights, plain-English UW flags, full source provenance on every call.
Base: /risk/ and /gridlogix/
GET
★ Start Here
/risk/report
Unified Risk Report
All 8 perils scored in parallel in a single call. Returns composite score, individual peril scores, plain-English UW flags, expected annual loss, NFIP loss history, fire protection, and full transparency block. Under 2s warm. The recommended entry point for any property underwriting workflow.
Composite weights adjustable per call — e.g.
?flood_w=0.25&wind_w=0.20. Weights auto-normalize. Override to match your book's risk appetite.
composite_scoreperil_scores{}uw_flags[]expected_annual_loss_usdtransparency{}
Response preview
"risk_summary": {
"peak_peril": "tornado",
"composite_score": 32.78,
"composite_tier": "Moderate",
"uw_flags": [...],
"sources_used": 17
}
"peak_peril": "tornado",
"composite_score": 32.78,
"composite_tier": "Moderate",
"uw_flags": [...],
"sources_used": 17
}
GET
/gridlogix/flood-index
Flood Index (GFI)
GridHazard Flood Index — FEMA zone weight + NRI annualized loss + Atlas 14 precipitation return period. Zone X SLOSH gap flag included.
gfi_scoregfi_tierzone_x_gap_flag
GET
/gridlogix/wind-index
Wind Hazard Index (GWHI)
30yr Storm Events frequency × NRI wind annualized loss rate. Boosted for Gulf and Atlantic coastal exposure markets.
gwhi_scoregwhi_tierevents_30yr
GET
/gridlogix/coastal-index
Coastal Index (GCI)
3-source coastline distance (TIGER + NOAA + OSM) combined with SLOSH surge depth Cat1–5. Best-of-three reconciliation reduces edge cases.
gci_scoreshortest_milesslosh_cat3_depth_ft
GET
/gridlogix/master-aggregate
Master Aggregate
Full multi-peril aggregate: all index scores, source registry, data vintage, and methodology URLs in a single structured response.
all_index_scores{}source_registry[]
GET
/gridlogix/insurability-signal
Insurability Alpha
Composite insurability signal synthesizing peril scores, loss history concentration, and climate velocity into a single underwriting tier.
insurability_tieralpha_score
GET
/gridlogix/climate-velocity
Climate Velocity Index
Rate-of-change signal across temperature, precipitation, and sea-level trends. Forward-looking physical climate shift per coordinate.
climate_velocity_scoretrend_direction
GET
/gridlogix/resilience-index
Resilience Index (GRI)
Cross-peril resilience composite combining NRI social vulnerability, CDC SVI, and multi-peril loss history concentration.
gri_scorevulnerability_tier
GET
/gridlogix/concurrent-causation
Concurrent Causation Volatility
Co-occurrence probability of multiple perils (flood + wind, wildfire + wind) at the coordinate. DOI signal for CC exposure.
cc_scoretop_pairs[]
GET
/gridlogix/heatmap
GRI Heatmap
Spatial resilience and risk heatmap data around a coordinate — useful for geographic concentration analysis across a portfolio radius.
heatmap_cells[]radius_miles
FEMA Flood
6 endpoints
FEMA NFHL regulatory flood zones, base flood elevation, FIRM compliance, LOMA/LOMR map modifications, and FEMA NRI flood exposure data.
Base: /fema/
GET★ Key
/fema/master-report
FEMA Master Audit
Full FEMA flood picture: zone, BFE, SFHA status, FIRM compliance, map modification history, and NRI flood annualized loss in one call.
flood_zoneis_sfhabfe_ftfirm_compliancenri_flood_alr
GET
/fema/flood-risk
Flood Zone Lookup
Regulatory flood zone and SFHA classification from FEMA NFHL. Returns zone code, SFHA flag, mandatory insurance indicator, and BFE where available.
flood_zoneis_sfhamandatory_insurance
GET
/fema/flood-elevation
Base Flood Elevation
BFE in feet at the coordinate from the NFHL. Includes FIRM panel ID and effective date. Critical for lender underwriting.
bfe_ftfirm_panel_ideffective_date
GET
/fema/firm-compliance
FIRM Compliance
FIRM panel compliance status — whether the community participates in the NFIP and current participation status.
community_statusnfip_participation
GET
/fema/map-modifications
Map Modifications (LOMA/LOMR)
Active Letters of Map Amendment and Revision at or near the coordinate. Returns amendment type, effective date, and affected area.
loma_records[]lomr_records[]
GET
/fema/flood-report-pdf
Flood Report PDF
Generate a formatted flood determination report PDF suitable for lender delivery. Includes zone, BFE, FIRM panel, and SFHA status.
pdf_urlreport_id
Loss History
6 endpoints
2.7M NFIP claims (1978–2026) at the coordinate level. Repetitive loss and SRL flags. 30 years of FEMA disaster declarations. Actual losses — not modeled scores.
Base: /loss-history/
GET★ Key
/loss-history/master
Loss History Master
Comprehensive flood loss at the coordinate: NFIP tract summary, radius claim count, repetitive loss flag, SRL proximity, and disaster declarations in one call.
tract_claimszone_x_claimstotal_paid_usdrl_flagsrl_count
GET
/loss-history/nfip-tract-summary
NFIP Tract Summary
NFIP claims aggregated at the census-tract level. Returns total claims, Zone X claim count, dominant zone, and total paid amount for the tract.
total_claimszone_x_claimsdominant_zonetotal_paid_usd
GET
/loss-history/nfip-radius
NFIP Radius Analysis
NFIP claim density within a configurable radius. Returns claim count, total paid, Zone X claims, and maximum individual claim within the radius.
claim_counttotal_paid_usdmax_claim_usdradius_miles
GET
/loss-history/repetitive-loss-flag
Repetitive Loss Flag
Flags repetitive loss (RL) properties within the search radius. Returns RL count, nearest RL distance, and total RL paid amount in the area.
rl_countnearest_rl_milestotal_rl_paid_usd
GET
/loss-history/severe-repetitive-loss
Severe Repetitive Loss (SRL)
SRL properties within radius — FEMA's highest-risk flood category. Returns SRL count, nearest distance, and total SRL paid amount.
srl_countnearest_srl_milestotal_srl_paid_usd
GET
/loss-history/disaster-declarations
FEMA Disaster Declarations
Major disaster declarations for the county. Returns declaration count, types (DR/EM/FM), total declarations by peril, and most recent event date.
declarations[]total_countmost_recent_date
Storm Perils — Wind, Hail, Tornado, Lightning
17 endpoints
30 years of NOAA Storm Events across all convective perils. Frequency indices (GWHI, HHI, THI, LHI), nearest-event lookup, county benchmarks, and NOAA Atlas 14 precipitation return periods.
Base: /wind/ · /hail/ · /tornado/ · /lightning/ · /noaa/
Wind / Hurricane — GWHI
GET★ Key
/wind/master
Wind Master (GWHI)
Full wind risk: GWHI score, 30/50/100-yr wind speeds, 30-year event count, NRI hurricane percentile, and nearest storm event.
gwhi_scorep100yr_mphevents_30yr
GET
/wind/frequency
Wind Frequency
Event frequency per county over 30 years. Returns annual event rate, max recorded speed, and county benchmark percentile.
annual_ratecounty_pct
GET
/wind/magnitude
Wind Magnitude
Peak wind magnitude lookup — maximum recorded gust speed and design wind speed from NRI at the coordinate.
max_gust_mphdesign_speed_mph
GET
/wind/nearest
Nearest Wind Incident
Nearest recorded wind event to the coordinate from NOAA Storm Events (1995–2024). Returns event type, magnitude (mph), date, and distance.
event_datemagnitude_mphdistance_miles
Hail — HHI
GET★ Key
/hail/master
Hail Master (HHI)
HHI score, 30-year event count, maximum recorded size (inches), NRI hail annualized loss, and nearest hail incident with date and distance.
hhi_scoreevents_30yrmax_size_in
GET
/hail/frequency
Hail Frequency
County-level hail event frequency over 30 years. Annual rate, county benchmark percentile, and ≥1in event rate.
annual_ratelarge_hail_rate
GET
/hail/nearest
Nearest Hail Incident
Nearest recorded hail event to the coordinate. Returns date, size (inches), distance in miles, and county.
event_datesize_indistance_miles
Tornado — THI
GET★ Key
/tornado/master
Tornado Master (THI)
THI score, 30-year event count, nearest tornado with F/EF scale and path geometry, NRI tornado annualized loss, and county benchmark percentile.
thi_scorenearest_ef_scaleevents_30yr
GET
/tornado/frequency
Tornado Frequency
County tornado frequency over 30 years with NRI boost weighting. Returns annual rate, EF2+ event rate, and county percentile rank.
annual_rateef2_plus_ratecounty_pct
GET
/tornado/nearest
Nearest Tornado Incident
Nearest recorded tornado event to the coordinate from 30 years of NOAA Storm Events. Returns EF scale, path width, date, and distance.
ef_scalepath_width_ftdistance_miles
Lightning — LHI · NOAA Atlas 14 Precipitation
GET★ Key
/lightning/master
Lightning Master (LHI)
LHI score from 24 years of NOAA Storm Events lightning data. County frequency, annual rate, and benchmark percentile.
lhi_scoreannual_ratecounty_pct
GET
/lightning/frequency
Lightning Frequency
County-level lightning event density and annual strike rate from NOAA Storm Events 2001–2024.
event_countannual_rate
GET
/lightning/nearest
Nearest Lightning Incident
Nearest recorded lightning damage incident to the coordinate from NOAA Storm Events (2001–2024). Returns date, damage, distance, and an underwriting note.
event_datedistance_milesuw_note
GET★ Key
/noaa/precip-master
Atlas 14 Precip Master
All NOAA Atlas 14 precipitation return periods at the coordinate. 2yr–1000yr at 1hr and 24hr durations. Flash flood flag included.
1hr_100yr_in24hr_100yr_inflash_flood_flag
GET
/noaa/precip-1hr
1-Hour Precipitation
Atlas 14 1-hour precipitation return period depths: 2yr, 10yr, 25yr, 50yr, 100yr, 500yr, 1000yr in inches.
1hr_depths{}
GET
/noaa/precip-24hr
24-Hour Precipitation
Atlas 14 24-hour precipitation return period depths across all standard return intervals.
24hr_depths{}
Earthquake
10 endpoints
USGS NSHM 2018 peak ground acceleration (ASCE 7-22), Vs30 site soil classification, active fault distance, and NRI seismic exposure. The most granular seismic stack available.
Base: /earthquake/
GET★ Key
/earthquake/master
Seismic Master (SEI)
Full seismic picture: SEI score, PGA, Ss/S1 spectral accelerations, NEHRP site class, Vs30, nearest fault with slip rate, and NRI earthquake loss.
sei_scorepga_gsite_classnearest_fault_miles
GET
/earthquake/pga
PGA Lookup (ASCE 7-22)
USGS NSHM 2018 peak ground acceleration at 2%/50yr and 10%/50yr exceedance. Ss and S1 spectral response at the coordinate.
pga_2pct_50yrsss1
GET
/earthquake/faults
Active Fault Lines
Nearest Quaternary faults from the USGS fault database. Returns fault name, type, slip rate class, and distance in meters.
nearest_faultslip_rate_classdistance_m
GET
/earthquake/soil
Soil / Vs30 / Liquefaction
Vs30 shear-wave velocity, NEHRP site class (A–E), and liquefaction susceptibility at the coordinate. Site amplification factor included.
vs30_mssite_classliquefaction_susceptibility
Wildfire
7 endpoints
USDA 2024 Wildfire Hazard Potential raster at 270m resolution (EPSG:5070). Point-in-raster WHP class lookup, radius analysis, and NRI wildfire financial comparison.
Base: /wildfire/
GET★ Key
/wildfire/hazard-score
Wildfire Hazard Score
USDA 2024 WHP raster class (1–5 Very Low to Very High) and WHI composite score at the coordinate. Includes NRI wildfire annualized loss rate.
whp_classwhi_scorenri_wfir_alr
GET
/wildfire/radius-analysis
Wildfire Radius Analysis
WHP class distribution within a radius — count of Very High/High/Moderate cells and exposure-weighted score for portfolio analysis.
high_cell_countexposure_score
GET
/wildfire/financial-comparison
Financial Comparison
NRI wildfire annualized loss, building exposure, and county benchmark comparison. Useful for rate adequacy review against regional wildfire exposure.
annualized_loss_usdcounty_benchmark_pct
GET★ Key
/wildfire/fhsz_status
CAL FIRE FHSZ Status (CA)
CAL FIRE Fire Hazard Severity Zone classification at the coordinate. Returns hazard class (Very High / High / Moderate / Not Mapped), layer source (SRA effective 2024 / LRA), and a plain-English UW note. California only — returns in_ca_coverage: false outside California.
hazard_classlayer_sourcein_mapped_zoneuw_note
GET
/wildfire/history
Fire Perimeter History (CA)
Historical burn perimeter lookup from NIFC (1878–2024, 30,154 CA perimeters). Returns in_burn_perimeter flag, matched fires (name/year/acres), burns within 5/10 miles, and most recent burn year. California only.
in_burn_perimetermatches[]burns_within_5mimost_recent_burn_year
Coastal / Storm Surge
11 endpoints
NOAA SLOSH MOM v4 (21M points, Cat1–5) layered over 3-source coastline distance. Unique FEMA Zone X surge gap flag surfaces hidden coastal flood risk.
Base: /surge/ · /coastal/
GET★ Key
/surge/slosh
SLOSH Surge Lookup
Nearest NOAA SLOSH MOM v4 point within 5km. Returns inundation depth (ft) at Cat1–Cat5 and peak surge category. 21M point spatial index.
cat1_depth_ftcat3_depth_ftcat5_depth_ftsnap_distance_m
GET★ Key
/surge/fema-gap
FEMA Zone X Surge Gap Flag
Identifies Zone X properties with actual surge exposure — the key differentiator vs. competitors. Flags properties FEMA classifies as minimal risk but SLOSH models show Cat3+ inundation.
Validated: Galveston Zone X properties correctly flagged at Cat3. This gap is GridHazard's lead over every HazardHub equivalent.
zone_x_gap_flagfirst_surge_categoryis_sfha
GET
/surge/category
Surge Profile by Category
Full Cat1–5 surge depth profile at the coordinate. Returns inundation depth at each hurricane category with first inundation level.
surge_profile{}first_inundation_cat
GET
/surge/first-inundation
First Inundation Category
The minimum hurricane category at which the coordinate first sees surge inundation. Critical for Cat1–Cat2 coastal underwriting decisions.
first_catfirst_depth_ft
GET
/surge/radius
Surge Radius Analysis
SLOSH point distribution within a radius — count of high-surge points (Cat3+ >3ft) for portfolio coastal concentration analysis.
high_surge_countmax_depth_ft
GET
/surge/levee-check
Levee Check
Checks for accredited levee protection at the coordinate. Returns levee accreditation status and freeboard estimate where available.
levee_accreditedfreeboard_ft
GET
/surge/county-profile
County Surge Profile
County-level surge exposure summary from SLOSH. Returns pct of county with Cat1/3/5 inundation and average depths.
cat3_pct_countyavg_cat3_depth_ft
GET
/coastal/coastline-index
Coastline Index (GCI)
3-source coastline distance from TIGER, NOAA CUSP, and OSM — reconciled to shortest distance. GCI composite score included.
tiger_milesnoaa_milesosm_milesshortest_miles
Sinkhole & Karst Geology
2 endpoints
USGS national karst geology compilation (112,214 polygons, 52 states/territories) and Florida subsidence incident proximity (4,376 reports). Geologic potential vs. confirmed sinkholes — caveats returned on every call.
Base: /karst/ and /sinkhole/
GET★ Key
/karst/status
Karst Geology Status
Point-in-polygon lookup against the USGS Karst of the United States compilation (OFR 2014-1156). Returns rock type, karst classification, geologic age, and source map unit for any overlapping polygons — 52 states/territories.
in_karst_arearock_typekarst_classuw_note
GET★ Key
/sinkhole/proximity
Sinkhole Proximity (FL)
Proximity lookup against FDEP/FGS Florida Subsidence Incident Reports (4,376 records, 1909–2025). Returns nearest reported incident, 1/3/5/10-mile ring counts, and statewide record range.
nearest_incidentring_counts{}total_incidents_statewide
Landslide Susceptibility
1 endpoint
USGS Slope-Relief Threshold model (Mirus et al., 2024) at 90m resolution — CONUS, Alaska, Hawaii, and Puerto Rico. Point-level susceptibility tier and county-level context in one call. Wired into /hazard/master and /risk/report.
Base: /hazard/
GET★ Key
/hazard/landslide_susceptibility
Landslide Susceptibility
USGS n10 model susceptibility tier (Not Susceptible / Low / Moderate / High / Very High) at the coordinate, plus county context: proportion of susceptible terrain and historical landslide density (landslides/km²). CONUS+AK+HI+PR coverage. Wired into /hazard/master and /risk/report.
n10_valuetierpct_susceptiblecounty_context{}
Environmental & Socioeconomic
13 endpoints
EPA ECHO (7.2M rows, 7 tables, EHI composite), CDC Social Vulnerability Index, and CDC Environmental Justice Index — all at census-tract level.
Base: /echo/ · /svi/ · /eji/
GET★ Key
/echo/master
EPA ECHO Master
Full EPA ECHO picture: Environmental Hazard Index (EHI) composite, TRI facility count, Superfund proximity, NPDES violations, and air quality score in one call.
ehi_scoretri_countsuperfund_proximitynpdes_violations
GET
/echo/risk-score
EHI Risk Score
Environmental Hazard Index composite — a single 0–100 score consolidating all ECHO facility types within the search radius via a single CTE query.
ehi_scoreehi_tier
GET
/echo/facilities
EPA ECHO Facilities
All regulated facilities within radius — TRI reporters, NPDES dischargers, CAA permit holders. Returns facility name, type, and compliance status.
facilities[]facility_typecompliance_status
GET
/echo/superfund
Superfund (CERCLIS)
Superfund site proximity — National Priorities List and CERCLIS sites within the radius. Returns site name, NPL status, and distance in miles.
npl_sites[]nearest_npl_miles
GET
/echo/air
Air Quality (TRI / ICIS-Air)
Air emissions from TRI reporters and ICIS-Air permit holders. Returns facility count, total release volume, and top pollutants within radius.
facility_counttotal_release_lbstop_pollutants[]
GET
/echo/violations
EPA Violations
ECHO violation records for facilities within radius. Returns violation count, enforcement action count, and penalty amount in the area.
violation_countenforcement_counttotal_penalties_usd
GET★ Key
/svi/master
CDC SVI Master
Full CDC Social Vulnerability Index at the census tract. Overall SVI score, 4-theme breakdown, and tract FIPS. Source: DS_CDC_SVI.
svi_overallsvi_themes{}tract_fips
GET
/svi/score
SVI Score
CDC SVI overall percentile score for the census tract — a single composite value for integration into underwriting models.
svi_scoresvi_tier
GET
/svi/themes
SVI Themes
All 4 CDC SVI themes at the tract: Socioeconomic, Household Composition, Minority Status, Housing & Transportation — each as a 0–1 percentile.
socioeconomichousehold_compminorityhousing_transport
GET★ Key
/eji/master
CDC EJI Master
Full Environmental Justice Index — environmental burden, social vulnerability, and health vulnerability at the tract level. Source: DS_CDC_EJI.
eji_scoreenv_burdensocial_vulnhealth_vuln
NRI Baseline
9 endpoints
FEMA National Risk Index census-tract data across 18 natural hazards. Annualized loss rates, expected annual loss, county benchmarks, and cross-peril correlation.
Base: /nri/
GET★ Key
/nri/complete-audit
NRI Complete Audit
Full NRI tract record: all 18-peril scores, social vulnerability index, community resilience, and expected annual loss. The baseline federal risk record for any address.
overall_scoreall_peril_alr{}eal_usdsvi
GET
/nri/county-benchmark
County Benchmark
Compares the property's NRI scores against county and national percentile distributions across all 18 perils.
county_pct_ranknational_pct_rank
GET
/nri/radius-analysis
Radius Analysis
NRI scores averaged across all tracts within a radius — useful for portfolio-level NRI exposure summary by book segment.
tract_countavg_scores{}
GET
/nri/financial-exposure
Financial Exposure
NRI building, content, and agriculture exposure in USD at the tract level. Total expected annual loss and loss rate per peril.
building_exposure_usdeal_usd
GET
/nri/top-perils
Top Perils Ranked
Returns the top 5 perils ranked by annualized loss rate at the tract. Immediate triage for any property.
ranked_perils[]top_alr
GET
/nri/resilience-gap
Resilience Gap
NRI community resilience score vs. risk exposure — surfaces the gap between a community's ability to withstand and recover from hazards vs. actual exposure.
resilience_scoreexposure_scoregap
Structures
3 endpoints
154M+ building footprints from FEMA/ORNL (25M) and Microsoft (129M). Occupancy class, floor area, estimated replacement value, and portfolio exposure radius analysis.
Base: /structures/
GET★ Key
/structures/lookup
Nearest Structure
Nearest building footprint at the coordinate. Returns occupancy class, floor area (sqm), construction era, and estimated replacement value in USD.
occupancy_classfloor_area_sqmrcv_usdconstruction_era
GET
/structures/profile
Building Profile
Full structure attributes: footprint geometry, height estimate, perimeter-to-area ratio (shape complexity), and data source (ORNL / Microsoft).
footprint_sqmheight_mshape_complexitydata_source
GET
/structures/exposure
Portfolio Exposure Radius
Aggregate exposure within a radius: building count, total floor area, occupancy class breakdown, and total estimated replacement value. For CAT triage and geographic concentration analysis.
building_counttotal_rcv_usdoccupancy_breakdown{}
Infrastructure & Geocoding
7 endpoints
52,051 fire & EMS stations with ISO proximity scoring. 33,444 EIA pipeline segments. TIGER forward and reverse geocoding for address-to-coordinate conversion.
Base: /infrastructure/ · /tiger/
GET★ Key
/infrastructure/fire-station-proximity
Fire Station Proximity
Nearest fire and EMS stations with distance, ISO protection class proxy, station counts within 1/3/5 miles, and composite Fire Protection Score 0–100. 52,051 stations from HIFLD.
ISO thresholds: <1mi → Class 1–3 · 1–3mi → Class 4–6 · 3–5mi → Class 7–8 · >5mi → Class 9–10. Proximity estimate — not an official ISO PPC rating.
fire_protection_scoreiso_class_estimatenearest_station_miles
GET★ Key
/infrastructure/pipeline-proximity
EIA Pipeline Proximity
Nearest EIA pipeline segments by commodity type (gas transmission, hazardous liquid, LNG). Returns pipeline name, operator, commodity, and distance in miles. 33,444 segments.
nearest_pipelines[]commoditydistance_miles
GET
/infrastructure/pipeline-radius
Pipeline Radius Analysis
All EIA pipeline segments within a radius — commodity breakdown, total segment count, and nearest distance per commodity type.
segments_by_commodity{}total_count
GET
/tiger/geocode
TIGER Geocode
Address to WGS84 coordinates via TIGER/Line geocoder. Returns lon, lat, match quality, and matched address string. Use output to call any GridHazard endpoint.
lonlatmatch_qualitymatched_address
GET
/tiger/reverse-geocode
TIGER Reverse Geocode
WGS84 coordinates to nearest street address. Returns formatted address, census tract FIPS, county, state, and match distance in meters.
formatted_addresscensus_tract_fipscounty_name
Transparency & Methodology
5 endpoints
Full provenance for every index and data source. Every weight, formula, and source version documented and retrievable. Designed to satisfy DOI, state insurance department, and internal model validation review.
Base: /methodology/
GET★ Key
/methodology/statement
Transparency Statement
Full GridHazard transparency and regulatory compliance statement: data governance, DOI-defensibility attestation, model risk management summary, and source citation list. Suitable for regulatory filings and model validation documentation.
governance_policydoi_attestationsource_citations[]
GET
/methodology/indices
List All Indices
All GridHazard proprietary indices with slug, full name, current version, and last-updated date. Includes GFI, GWHI, GCI, SEI, HHI, THI, LHI, WHI, EHI, GRI, CCV, CLV.
indices[]versionlast_updated
GET
/methodology/indices/{slug}
Index Methodology Detail
Complete methodology for a single index: scoring formula, component weights, source datasets with versions, normalization method, tier thresholds, and version history. e.g.
?slug=gwhiformulacomponent_weights{}tier_thresholds{}version_history[]
GET
/methodology/sources
List All Data Sources
All 36 federal data sources: name, agency, slug, current version, data vintage, and last ingest date. FEMA · NOAA · USGS · USDA · EPA · CDC · EIA · Census · NRC · FDEP.
sources[]agencylast_ingest_date
GET
/methodology/sources/{slug}
Source Provenance
Full provenance for one data source: agency, license, download URL, geographic coverage, temporal range, how GridHazard uses it, and which endpoints it powers.
agencylicensepowered_endpoints[]
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