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.

41 tools · MCP server version 1.28.0 · 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

23 of the 41 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
`search_entities`	Find a place in the location registry — ports and harbours, military bases and airfields, power and energy plants, maritime chokepoints and named seas.	1 tok
`get_entity`	What has happened at one place.	1 tok
`get_related_events`	What else connects to one event, and what came before and after it.	3–8 tok

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
`test_hypotheses`	Given competing statements, return the observation that would REFUTE the most of them — and, in the same answer, the observations that would refute none of them however convincing they look.	3 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 Watchlist measurements), 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
`list_watches`	The Watchlist: everything this account keeps watch on — areas under satellite measurement, areas under event watch (standing orders), and real-world events being tracked — aggregated as one list with a state bucket per watch: needs_attention (anomaly, error, or a notable development), changed_today (a meaningful change in the last 24 h), awaiting_data, or stable.	free
`get_watch`	One watch end to end, in a single call: its target, current state, latest meaningful change, measurements with their recent series, standing-order questions, and — for an event watch — the event’s verification state, casualty/attribution fields, recent developments, imagery availability, and the full event thread (timeline + sources).	free
`create_watch`	Add a target to the Watchlist.	free
`update_watch`	Rename a watch, or pause and resume it.	free
`delete_watch`	Delete a watch by id.	free
`add_note`	Add a note to a watch, start a thread on it, or reply to one — one append-only ledger.	free
`delete_note`	Delete one note from a watch.	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.
`watch://{watch_id}`	A Watchlist entry with its current state, latest meaningful change, measurements, (for event watches) the full event thread, and the notes kept against it. The same body get_watch returns. 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.

License

Apache-2.0