Off Nadir Delta

Off-Nadir Delta MCP

From first signal to satellite evidence. Give an AI agent a live intelligence workflow: discover an event, verify the reporting, identify what evidence is missing, determine whether a satellite can actually resolve it, and produce a collection-ready plan.

Real-time event and geospatial intelligence for OSINT, geopolitical risk, and GEOINT work — source-linked, geolocated, and current, not a training snapshot.

30 tools · MCP server version 1.19.0 · full reference

What it does

Seeing the event is easy. Knowing what you can prove — and what evidence is still missing — is the product. Delta:

• monitors emerging world events and geolocates them
• checks claims against source-linked open data, and reports the source breadth behind each one
• assesses whether the event is observable from space, at what resolution, and by which sensor
• returns a collection-ready recommendation: what to collect, where, and when

Connect

Hosted server — recommended

No install. Point any MCP client at the remote endpoint and approve once over OAuth 2.1 (Dynamic Client Registration is supported, so most clients need only the URL):

https://offnadir-delta.com/api/v1/mcp

In the Claude or ChatGPT apps: Settings → Connectors → Add custom connector, paste that URL. Cursor and VS Code have one-click installs on the docs page.

Claude Code:

claude mcp add --transport http off-nadir-delta https://offnadir-delta.com/api/v1/mcp

This package — local stdio

Use this when your client cannot do remote OAuth, or you would rather hold an API key in an environment variable and pin a version. Get a key at offnadir-delta.com/account/api.

{
  "mcpServers": {
    "off-nadir-delta": {
      "command": "npx",
      "args": ["-y", "offnadir-delta-mcp"],
      "env": { "OFFNADIR_DELTA_API_KEY": "ond_..." }
    }
  }
}

Docker:

docker run -i --rm -e OFFNADIR_DELTA_API_KEY=ond_... offnadir-delta-mcp

The package forwards tools/call to the hosted server with your key. tools/list answers locally from a generated catalog, so registries can introspect it without credentials.

First call — free

16 of the 30 tools cost nothing, so the first thing you run is free:

Give me the latest Daily World Brief. Lead with the three most significant developments, explain why each matters, and cite the supporting signals.

Then try the full signal-to-satellite workflow:

Find the highest-priority observable event from the last 24 hours, verify the reporting, and recommend the best available satellite collection plan.

Tools

Discover

What is happening, where it concentrates, and what today looks like.

Tool	What it does	Cost
query_signals	Query geolocated world event signals (Delta Signals: geopolitical, security, disaster, and infrastructure events distilled from global news media, AI-enriched with severity/GEOINT scores and satellite-collection recommendations).	3 tok
query_stats	Aggregate statistics over the signal corpus — total event count plus per-category and per-day breakdown (trend) for a bounding box and date window.	1 tok
query_hotspots	Geographic hotspots — signal density grid-binned into cells, ranked by event count, each with peak severity, the categories present, and up to 5 representative event_ids (trace a cell back to its signals).	1 tok
get_world_brief	Fetch the Daily World Brief — an AI-synthesized OSINT/GEOINT digest of the previous UTC day's worldwide event signals (headline, executive summary, top developments with why-it-matters and what-to-watch, per-theme roll-up, ranked signals).	free
query_developments	What actually CHANGED about the events in an area — not which articles are new.	3 tok
get_event_thread	The full history of ONE event: its current state, and every change in the order it happened.	free

Plan

Whether a satellite can resolve it, which one, and when it next passes.

Tool	What it does	Cost
search_imagery	Search the satellite imagery catalog (Sentinel-1, Sentinel-2, NISAR L-band) for scenes over an area and date window — the natural follow-up to a signal (find imagery over the event location).	2 tok
plan_event_imagery	Plan the imagery evidence for ONE event in a single call, instead of guessing collections one at a time.	4 tok
rank_imaging_priority	WHERE — and with what class (and therefore cost) of satellite — is observation most worthwhile right now?	1 tok
survey_observable_events	Which events in a window can a given in-app sensor actually RESOLVE?	1 tok
predict_satellite_passes	WHEN can this place next be imaged, and by WHAT — the timing half of collection planning.	2 tok
lookup_elevation	Measure terrain height from the Copernicus DEM GLO-30 — a point (lat + lon), an area (bbox), or a drawn polygon, for which the statistics are computed over the samples INSIDE the ring rather than its bounding box.	free
analyze_terrain	Compute FROM the terrain rather than reading heights out of it (that is lookup_elevation).	free

Analyze

Turn reporting into a cited assessment you can audit afterwards.

Tool	What it does	Cost
assess_signal	Run an AI RS (remote-sensing) deep-dive assessment for a specific signal: what to observe, recommended sensors, and a collection window.	5/15 tok
ask_analyst	Ask the Delta Analyst an OSINT/GEOINT question.	5–123 tok
get_analyst_job	Fetch the status and result of an ask_analyst run by job_id.	free
query_claims	Read the LEDGER of claims this key has been given — every factual assertion the Analyst made, with its evidence class (CONFIRMED / REPORTED / PARTY_CLAIM / ASSESSMENT), how many INDEPENDENT source families backed it, and the publishers.	free
refine_location	Research one signal's location further and, if the sources genuinely narrow it, store and return the better coordinate.	3–29 tok
measure_index_series	Measure a spectral index over an area, scene by scene, back through the Sentinel-2 archive — the answer to "how has this changed since ".	0.5 tok
detect_ships	Count vessel-like targets in ONE SAR scene over an area, using CFAR detection on Sentinel-1.	5 tok

Watch

Stand up continuous coverage and be told only when the answer changes. Creating and listing cost nothing — you are metered only when a check actually fires, or a new acquisition is actually measured.

Tool	What it does	Cost
create_standing_order	Put an area under CONTINUOUS watch: save a question plus a bounding box and Delta re-answers it on a schedule, notifying only when the answer actually changed.	free
list_standing_orders	List the standing orders on this key, with each one’s cadence, watched area, when it last checked, when it last actually fired, and how many consecutive checks found nothing (quiet_checks — a high number means the watch is not earning its place).	free
delete_standing_order	Delete a standing order by id, or pause/resume it instead by passing active=false/true.	free
list_monitored_areas	List the places under continuous satellite measurement on this key (Delta Monitor), with each area’s metric, most recent value, change since the previous measurement, whether that value was flagged anomalous, and coverage — how many acquisitions were measured versus how many exist.	free
get_monitored_area	Fetch one monitored area with its full measurement history — every acquisition that was measured, its value, and whether it was flagged anomalous.	free
create_monitored_area	Put a place under continuous satellite measurement: pick an area and what to count, and every new Sentinel-1 / Sentinel-2 / VIIRS acquisition over it is measured automatically from then on.	free

Workspace

The map assets you own — saved layer sets and your own uploaded data.

Tool	What it does	Cost
list_layer_sets	List the layer sets saved on this account — the named map configurations a user builds in the app, each with how many layers it holds, its tags, when it was last changed and when it was last opened.	free
get_layer_set	Read one saved layer set by id: its name, description, layer count, size, tags and timestamps.	free
list_uploaded_layers	List the data this account uploaded to the map — name, format, size and when it was added — plus the formats the uploader actually accepts.	free

Account

Pre-flight your token balance before a metered call.

Tool	What it does	Cost
get_usage	Check the calling key's remaining token balance and plan capabilities — monthly allocation, tokens used this period, tokens remaining, and whether the plan includes AI tools over the API (assess_signal / ask_analyst).	free

Pricing and metering

Usage-based Delta tokens, identical over REST and MCP. Costs above are generated from the same constant the biller reads, and every metered result carries the exact charge it incurred — so you never have to trust a number in a README. Free tools never touch the balance.

ask_analyst is hybrid-async: it enqueues a run and returns a job_id immediately; poll get_analyst_job (free — the run is charged once, on completion). Most questions finish in ~30–90s; a brief with satellite-imagery lookups or many sources can take 2–3 minutes.

The API and the MCP server are available on every plan, including Free — the only gate is your token balance. Call get_usage (free) to pre-flight. Current limits and package prices: offnadir-delta.com/pricing.

Authentication

Two credentials are accepted on the hosted endpoint:

• OAuth 2.1 with PKCE and Dynamic Client Registration — for interactive clients
• Bearer API key (Authorization: Bearer ond_...) — for servers, CI, and this stdio package

Keys are shown once at creation, hashed at rest, and revocable at any time from /account/api.

Resources and prompts

Resource	Description
brief://latest	The most recent AI-synthesized Daily World Brief (JSON). Free.
signals://schema	JSON Schema of the public Signal shape returned by query_signals / /api/v1/signals.
usage://current	Remaining token balance and plan capabilities for the calling key. Free.
imagery://collections	The satellite catalog collections searchable via search_imagery — Sentinel-1 C-band SAR, Sentinel-2 optical, and NISAR L-band SAR (provisional calibration). Free.
status://current	How current the data is (ingestion/enrichment frontier), the Daily World Brief status, and an Operational/Delayed/Degraded roll-up. Free.
brief://{date}	The Daily World Brief for a specific UTC date (YYYY-MM-DD). Free.

Prompt	Description
daily-situation-briefing	Summarize the current world situation from the Daily World Brief.
assess-top-signal	Find the highest-severity recent signal in an area/category and run an RS assessment.
aoi-watch	Scan an area of interest for recent escalations and recommend collection.
market-exposure-check	Find recent events that could plausibly move a given market (oil, grain, shipping, ...) and explain each transmission channel. Informational only — not investment advice.

Links

• Tool reference, setup, and one-click installs
• REST API reference · OpenAPI
• Changelog and compatibility policy
• Live server version probe (no auth, no tokens)

License

Apache-2.0