# search_13d_filings

Search recent SEC Schedule 13D / 13G filings from the past 72 hours. Args: activist: Filter to filings tagged with this activist filer name. Substring match, case-insensitive. Examples: 'Saba', 'Starboard', 'Icahn', 'Elliott', 'Pershing'. min_percent: Minimum percent of class disclosed. include_amendments: Include 13D/A and 13G/A amendments. Default True. include_passive_13g: Include passive Schedule 13G filings. Default False (only active 13D / 13D/A returned). limit: Max results (1-50, default 25). Returns: JSON list of filings with cusip, percent_of_class, aggregate_amount, activist_filers, and an Item 4 purpose excerpt.

Agent View of the PolicyLayer registry record for `search_13d_filings`. HTML page: https://policylayer.com/tools/com-filingfirehose-firehose/search-13d-filings

## Facts

- Tool: `search_13d_filings`
- Server: FilingFirehose (`https://filingfirehose.com/mcp`) — https://policylayer.com/tools/com-filingfirehose-firehose.md
- Homepage: https://github.com/jaablon/filingfirehose-python
- Risk category: Read (Low risk)
- Registry record: grade C, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 5
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | integer | no |  |
| `activist` | object | no |  |
| `min_percent` | object | no |  |
| `include_amendments` | boolean | no |  |
| `include_passive_13g` | boolean | no |  |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "search_13d_filings",
    "arguments": {}
  }
}
```

## Why search_13d_filings is rated Low

This is a data retrieval tool that queries historical SEC filing data with filtering options. It has no side effects—it only reads and returns publicly available SEC disclosure documents.

From the tool's own definition: "Tool searches and retrieves SEC Schedule 13D/13G filings; the name explicitly states 'search_13d_filings' and description confirms it 'Search[es] recent SEC Schedule 13D / 13G filings'."

## Use case

AI agents call search_13d_filings to retrieve information from FilingFirehose without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches FilingFirehose:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_13d_filings": {}
  }
}
```

## Other tools on FilingFirehose (3)

- `get_filing` — Read — https://policylayer.com/tools/com-filingfirehose-firehose/get-filing.md
- `search_8k_filings` — Read — https://policylayer.com/tools/com-filingfirehose-firehose/search-8k-filings.md
- `search_atm_offerings` — Read — https://policylayer.com/tools/com-filingfirehose-firehose/search-atm-offerings.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=com-filingfirehose-firehose · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-filingfirehose-firehose