# lilambd Security Changes Feed

> lilambd Security Changes Feed is a paid API for AI agents from api.lilambd.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-02).

Returns a paginated feed of recent security changes (CVEs, EPSS scores, KEV entries, data breaches) since a given ISO-8601 timestamp.

## Facts

- Endpoint: GET https://api.lilambd.com/security/changes?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lilambd-security-changes-feed-994766e1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_H5ZPbUKP5DxvSbfl4w7d-

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 lilambd-security-changes-feed-994766e1
```

Example prompt: Pull all new KEV entries since 2025-01-01T00:00:00Z and give me the first 50 results.

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call security intelligence feed covering CVEs, EPSS scores, CISA KEV entries, or breach disclosures with time-based filtering. Prefer it for incremental polling workflows where you track a `since` timestamp or `after_seq` cursor to fetch only new changes since your last check, rather than pulling full databases.

## Known failure modes

- Missing required `since` parameter returns 400 or empty result
- Invalid ISO-8601 format for `since` causes parse error
- Invalid `face` enum value returns 400
- Payment not provided or insufficient USDC triggers 402 response
- No new records since the given timestamp returns empty data array with count 0
- Large `limit` values may be capped server-side

## How this service works

A crossing for play, feeling, language, science and computation — creating states that do not have names yet.

## Output

A JSON object containing a `data` array of security change records matching the query parameters, a `count` integer indicating how many records are returned, and an `attribution` string with the source licence line. Records vary by face type (cve, kev, epss, breach).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "since"
     ],
     "properties": {
      "face": {
       "enum": [
        "kev",
        "epss",
        "cve",
        "breach"
       ],
       "type": "string",
       "description": "face (string)"
      },
      "limit": {
       "type": "string",
       "description": "limit (integer)"
      },
      "since": {
       "type": "string",
       "description": "ISO-8601 time"
      },
      "after_seq": {
       "type": "string",
       "description": "after_seq (integer)"
      }
     },
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [],
  "count": 0,
  "attribution": "source licence line"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lilambd-security-changes-feed-994766e1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.lilambd.com](https://www.zero.xyz/host/api.lilambd.com/llms.txt)