# SEC 8-K Filing Velocity Spike Detector

> SEC 8-K Filing Velocity Spike Detector is a paid API for AI agents from tollbooth.memerhuwhite.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-13).

Detects unusual spikes in SEC 8-K filing rates over a configurable time window, returning velocity metrics and anomaly signals for OSINT and market surveillance.

## Facts

- Endpoint: POST https://tollbooth.memerhuwhite.workers.dev/paid/osint/sec-8k-velocity
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sec-8-k-filing-velocity-spike-detector-2cd3eec7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P9qQ0KrNAGgSevizjq-9f

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 sec-8-k-filing-velocity-spike-detector-2cd3eec7 -d '<json body>'
```

Example prompt: Check if there's an unusual spike in SEC 8-K filings right now — look back over the last 24 hours, return up to 100 results, and only flag anomalies with a score above 0.6.

## When to prefer this

Use this endpoint when you need real-time or near-real-time statistical anomaly detection on SEC 8-K filing rates rather than fetching individual filings. Prefer this over raw EDGAR search when the goal is surveillance, alerting, or detecting market-moving disclosure bursts — especially in automated trading, OSINT pipelines, or news event detection workflows. It is specifically designed for velocity analysis, not document retrieval.

## Known failure modes

- Invalid hours value outside 1-72 range returns validation error
- limit below 10 or above 200 rejected with schema error
- min_score outside 0-1 range causes rejection
- No filings found returns empty rows array with spike:false
- Upstream SEC EDGAR data unavailability may return stale or error response
- Payment failure (insufficient USDC) blocks the call entirely

## How this service works

100+ paid x402 MCP tools for AI agents. Prediction markets, SEC filings, federal data, OSINT, academic research, health, environmental. Pay per call in USDC on Base.

## Output

Returns a JSON object with: a list of matching 8-K filing rows, the current velocity ratio (e.g. 3.8x above baseline), a boolean spike flag, the mean 24-hour filing rate, and the count of filings in the last hour. Allows agents to quickly determine if 8-K filing activity is statistically anomalous.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {
      "hours": {
       "type": "integer",
       "maximum": 72,
       "minimum": 1
      },
      "limit": {
       "type": "integer",
       "maximum": 200,
       "minimum": 10
      },
      "min_score": {
       "type": "number",
       "maximum": 1,
       "minimum": 0
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "rows": [],
  "ratio": 3.8,
  "spike": true,
  "mean_24h": 3.2,
  "filings_last_1h": 12
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sec-8-k-filing-velocity-spike-detector-2cd3eec7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tollbooth.memerhuwhite.workers.dev](https://www.zero.xyz/host/tollbooth.memerhuwhite.workers.dev/llms.txt)