# d21 Sanctions Delta

> d21 Sanctions Delta is a paid API for AI agents from draconic21-x402-api.onrender.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-09).

Returns OFAC SDN list changes (additions, removals, modifications) since a given date, including crypto address changes, sourced from OFAC's official change-tracking feed.

## Facts

- Endpoint: POST https://draconic21-x402-api.onrender.com/v1/sanctions_delta?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-09
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/d21-sanctions-delta-65ce4ef3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YnRgcYdmJgEoF-hblg9GD

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 d21-sanctions-delta-65ce4ef3 -d '<json body>'
```

Example prompt: Show me all OFAC SDN list changes since April 1, 2025 — I only care about entities with crypto address changes, limit the results to 30.

## When to prefer this

Choose this endpoint when you need authoritative, officially-sourced OFAC SDN change data rather than self-diffing two snapshots — it derives from OFAC's own change-tracking feed. Ideal for compliance workflows that need to know exactly what changed since a specific date, crypto AML screening pipelines that need updated sanctioned addresses, or any agent that must detect newly sanctioned parties in near-real-time. Prefer over generic sanctions snapshot endpoints when delta/change tracking is the specific requirement.

## Known failure modes

- Invalid or future 'since' date returns an error or empty result
- Unsupported entity_type enum value causes validation error
- limit out of range (below 1 or above 60) causes schema validation failure
- OFAC upstream feed unavailable causes service error
- No changes found for the given date range returns an empty list
- Rate limiting or payment failure (x402) blocks the request

## How this service works

Sanctions Delta ($0.008): which OFAC SDN entries (and OFAC-published crypto addresses) were added, removed, or modified since a given date, derived from OFAC's own official change-tracking feed (sanctionslistservice.ofac.treas.gov/changes/...) — not a self-diff of two snapshots. Body { since: "YYYY-MM-DD", entity_type?, crypto_only?, limit? }. Check free /v1/sanctions_delta/availability first.

## Output

A list of OFAC SDN entry change records since the specified date, each indicating whether the entry was added, removed, or modified. Records include entity details (name, type) and, where applicable, OFAC-published crypto addresses. Filtered by entity_type and/or crypto_only if specified, up to the requested limit.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "maximum": 60,
   "minimum": 1
  },
  "since": {
   "type": "string",
   "format": "date",
   "description": "Only publications on/after this date"
  },
  "crypto_only": {
   "type": "boolean",
   "description": "Only entities with an OFAC-published crypto address change"
  },
  "entity_type": {
   "enum": [
    "individual",
    "entity",
    "vessel",
    "aircraft"
   ],
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/d21-sanctions-delta-65ce4ef3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from draconic21-x402-api.onrender.com](https://www.zero.xyz/host/draconic21-x402-api.onrender.com/llms.txt)