# fed_z1_series

Return a bounded quarterly history for one curated Federal Reserve Financial Accounts (Z.1) aggregate series from LiveDataLink's self-hosted release snapshot. Includes official series/table identifiers, dollar values, units, seasonal-adjustment basis, pagination, source hash, and release provenance. Use this for 'show household net worth since 2019', 'quarterly federal debt outstanding', or 'consumer credit history'. Values are aggregate historical estimates that may be revised.

Agent View of the PolicyLayer registry record for `fed_z1_series`. HTML page: https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/fed-z1-series

## Facts

- Tool: `fed_z1_series`
- Server: Livedatalink (`https://livedatalink.ai/mcp`) — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink.md
- Homepage: https://github.com/blackboxfoundry/livedatalink
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 6 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | integer | no | Maximum observations, newest first. Default 24. |
| `offset` | integer | no | Observations to skip. Default 0. |
| `series` | string | yes | Exact curated slug or official Z.1 series ID. Call fed_z1_catalog to discover supported values. |
| `end_period` | string | no | Quarter in official Z.1 YYYY:Qn form, such as 2020:Q4. |
| `start_period` | string | no | Quarter in official Z.1 YYYY:Qn form, such as 2020:Q4. |
| `response_format` | string | no | Human-readable markdown or machine-readable JSON. Default markdown. |

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": "fed_z1_series",
    "arguments": {
      "series": "<series>"
    }
  }
}
```

## Why fed_z1_series is rated Low

Even though fed_z1_series only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

## Use case

AI agents call fed_z1_series to retrieve information from Livedatalink 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 Livedatalink:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "fed_z1_series": {}
  }
}
```

## Other tools on Livedatalink (380)

- `beneficial_owner_screen` — Destructive — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/beneficial-owner-screen.md
- `bea_state_economic_profile` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bea-state-economic-profile.md
- `bts_transport_border_activity_pack` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bts-transport-border-activity-pack.md
- `cftc_cot_evidence_pack` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/cftc-cot-evidence-pack.md
- `clinical_site_selector` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/clinical-site-selector.md
- `edgar_recent_filings` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/edgar-recent-filings.md
- `entity_dossier` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/entity-dossier.md
- `fed_board_h15_evidence_pack` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/fed-board-h15-evidence-pack.md
- `fed_board_h15_yield_curve` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/fed-board-h15-yield-curve.md
- `govinfo_legislation_committee_path` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/govinfo-legislation-committee-path.md
- `govinfo_legislation_evidence_pack` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/govinfo-legislation-evidence-pack.md
- `patent_recent` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/patent-recent.md
- `treasury_tic_official_share` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/treasury-tic-official-share.md
- `trials_details` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/trials-details.md
- `usda_nass_crop_evidence_pack` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/usda-nass-crop-evidence-pack.md
- `affordable_housing_refinance_evidence_pack` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/affordable-housing-refinance-evidence-pack.md
- `air_quality` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/air-quality.md
- `bank_health_report` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bank-health-report.md
- `bea_compare_states` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bea-compare-states.md
- `bea_search_state_indicators` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bea-search-state-indicators.md
- `bea_state_economic_trend` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bea-state-economic-trend.md
- `bls_indicator` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bls-indicator.md
- `bls_series` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bls-series.md
- `book_details` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-details.md
- `book_fulltext_search` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-fulltext-search.md
- `book_get_text` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-get-text.md
- `book_search` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-search.md
- `book_status` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-status.md
- `bounce_scanner` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bounce-scanner.md
- `bts_transport_border_trend` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bts-transport-border-trend.md
- …and 350 more: https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink.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=io-github-blackboxfoundry-livedatalink · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-blackboxfoundry-livedatalink