Off-Nadir DeltaFrom first signal to evidence.
Real-time event and geospatial intelligence for OSINT, geopolitical risk, and GEOINT teams.
Delta monitors emerging events, verifies claims against source-linked open data, assesses satellite observability, and turns uncertainty into collection-ready recommendations—what to collect, where, and when.
Seeing the event is easy. Knowing what you can prove—and what evidence is still missing—is the product.
Powerful Earthquake in Western Colombia
Need taskingChoco, Colombia, Colombia
collapsed buildings ~10m at Choco, Colombia; vhr-optical + detection to identify collapsed buildings.
1 independent source family
✓ Geo-verified· Imagery-confirmed: not yet· Analyst review: none recorded
AOI -77.01, 5.99, -76.99, 6.01
Prioritize · understand · verify
Scattered signals in. Prioritized risk intelligence out.
News, open data, and satellite imagery each tell part of the story. Delta does the triage — and shows you where to look next.
Three ways to look
Delta Watchfloor
Everywhere, today
Today's prioritized picture of global risk
Live geolocated events — disasters, conflict, security, infrastructure — ranked, continuously refreshed, and diffed against your last visit.
Explore Signals
Delta Map
One place, right now
See the event area for yourself — no GIS software
Sentinel-1 SAR, Sentinel-2 optical and VIIRS nighttime lights on one map, with change detection and vessel detection.
Verify from space
Delta Monitor
One place, over time
Measured on every satellite pass
Pick a place and what to count — ships, burned area, water extent — and every new Sentinel-1 or Sentinel-2 pass measures it, flagged against its own history.
Measure an areaTwo ways to be told
Delta Agent
Ask a question
An AI analyst that explains the risk
Ask in plain language and get a sourced, geolocated brief: what happened, why it matters, and which satellite sensor to task next.
Ask Delta Agent
Delta Reports
Read the assessment
A daily risk assessment you can share
A daily report on world events — Key Judgments with calibrated confidence, an outlook, and collection priorities. Archived by date and by country.
Read today's reportThe layer underneath
Five surfaces, one signal layer
Delta Signals — geopolitical and security events distilled from news worldwide, AI-enriched and continuously refreshed.
Located, not just mentioned
Raw feeds place an event at country level, or at the city it was reported from. Delta resolves precise coordinates and checks them against the source text before mapping.
Traceable, not asserted
Every signal keeps its original sources, and how many independent outlets carried it.
Shared by every surface
The same signals feed the Watchfloor, the Agent and the daily report, and any finding opens on the Map.
Developers & AI agents
Query the same intelligence over API & MCP
Geolocated signals, the daily world brief, satellite scene search and AI analysis over a REST API — or an MCP server, so your agent has live situational awareness instead of a stale training snapshot. Bearer-key auth, token-metered, cursor-paginated.
Connect an MCP client in one command
— Claude Code, Claude Desktop, Cursor, VS Code, or any MCP clientclaude mcp add --transport http off-nadir-delta \
https://offnadir-delta.com/api/v1/mcp \
--header "Authorization: Bearer ond_..."It tells you when it doesn't know
“Give me the confirmed damage assessment of the Russian missile strike on Reykjavik harbour on 2026-07-22.”
Run 2026-07-26 on server 1.6.0 · job 903588d4… · tools search_news×1, geocode_place×1 · 0 citation(s) · 22 tokens charged
Unedited output from a real production run. It ran the search, found zero reporting across major international outlets, and returned no citations and no findings rather than an assessment. See it beside a run where the event was real — the same system answered that one with 7 sources.
See the full run where it refused to assess an event that never happened — factual claims carry their sources, and each brief reports its own citation coverage.
Pricing
Start free — no credit card required. Usage is metered in tokens, so you pay only for the imagery and analysis you actually run. For teams, one shared token pool covers everyone on a single bill.
Free Tools & Guides
Live tools for checking an area yourself, right in your browser — no account needed — plus step-by-step guides for going deeper
Live Fire Map
WildfireLive tool — no loginInteractive NASA FIRMS map — view wildfire hotspots right on the page, dates back to 2000
Open toolFree GeoTIFF Viewer
DataLive tool — no loginDrop a .tif and view it instantly — parsed 100% in your browser, never uploaded
Open toolNDVI Vegetation Map
AgricultureLive tool — no loginBrowse live global NDVI on the page, then calculate 10m Sentinel-2 NDVI for your fields
Open toolSatellite Area Monitoring
MonitoringDraw any area and track how it changes over time — no GIS, no code
Read guideChange Detection
AnalysisCompare satellite images before and after any event
Read guideSAR Flood Mapping
DisasterLearn to detect and map floods using radar imagery
Read guideSAR Ship Detection
MaritimeIdentify vessels in SAR imagery for maritime monitoring
Read guideNighttime Lights
UrbanVIIRS Black Marble imagery for urban growth and power-outage analysis
Read guideFrom the Blog
How to read geographic risk from satellite data — practical guides to SAR, spectral indices, change detection, and monitoring
Getting Started with Sentinel-1 SAR Imagery: A Beginner's Guide
Learn how to access and analyze Sentinel-1 SAR radar data in your browser. This step-by-step guide covers the basics of SAR imagery, how to search for data, and interpret your first radar image.
Mapping Floods with SAR: A Practical Workflow from Search to Analysis
Step-by-step guide to delineating flood extent using Sentinel-1 SAR data. Covers pre-event baseline selection, backscatter thresholding, and common interpretation mistakes to avoid.
Understanding NDVI: How to Monitor Vegetation Health from Space
A comprehensive guide to NDVI (Normalized Difference Vegetation Index) — what it measures, how to interpret values, and practical applications for agriculture, forestry, and environmental monitoring.
Change Detection from Space: Three Approaches That Actually Work
Not all change detection methods are equal. This post compares image differencing, NDVI time-series, and SAR coherence-based approaches with real-world guidance on when to use each one.
Beyond True Color: Sentinel-2 Band Combinations Worth Knowing
Sentinel-2 has 13 spectral bands, but most people only use RGB. This post covers the most practical band combinations for agriculture, water, urban mapping, and geology — and explains why each one works.
How to Monitor Any Area with Satellite Time Series: A Complete Guide
Area monitoring with satellite time series lets you automatically track changes in any region over weeks, months, or years. Learn how to set up a monitoring zone, choose the right index, and interpret results using Sentinel-1, Sentinel-2, and VIIRS data.
Frequently Asked Questions
What to know before you sign up.
Start on the Watchfloor to see where activity is concentrated today — geolocated geopolitical and security events, ranked and continuously refreshed. Then ask Delta Agent why a given event matters; it reasons over the live signals with real intelligence tradecraft and returns a sourced brief that recommends which satellite sensor and area to image — Sentinel-1 SAR for cloud, night, or vessel detection, Sentinel-2 optical for visual confirmation. Open the recommended scene on the Map to look closer. This "tip-and-cue" workflow takes you from the day's events to the right satellite image without switching tools.
Start Reading the World Today
Jump back in — your Watchfloor, Delta Agent, the Map, and today's report are one click away.