NCUA — US credit unions (5300 Call Report)

Financials, membership, branches and ATMs for every federally insured US credit union — 4,336 institutions, five years of quarterly filings, from the regulator's own 5300 Call Report.

Part of Pipeworx — an MCP gateway connecting AI agents to 1573+ live data sources.

Why this exists alongside fdic

They cover disjoint halves of US retail banking, and neither can answer for the other. Credit unions are insured by the NCUSIF, not the FDIC, so they are absent from FDIC data by definition — not missing, not incomplete, structurally not there. "How big is my bank" and "how big is my credit union" are two different lookups.

banking-regulations is a third thing again: that pack serves NCUA's rules (12 CFR 700–799). This one serves the institutions.

Tools

Tool	Answers
ncua_search_credit_unions	Credit unions in Austin, TX — fuzzy name, city or state
ncua_credit_union_profile	How big is Navy Federal? — assets, members, loans, shares, branches
ncua_credit_union_financials	One figure over time, or every figure for a quarter
ncua_rank_credit_unions	Largest credit unions in Ohio — by any mirrored figure
ncua_compare_credit_unions	Two to five side by side
ncua_account_lookup	What is ACCT_010? — the full 3,376-account dictionary
ncua_branches	Branch and ATM locations by credit union or place
ncua_industry_totals	How many credit unions are there? — national or per state

Auth

Keyless.

The account dictionary is the product

The 5300 Call Report stores every figure against an opaque code, and the meaning lives in a separate file:

FS220.txt : CU_NUMBER, CYCLE_DATE, ACCT_010, ACCT_083, ...
            1,         3/31/2026,  13376472, 7678,     ...

AcctDesc  : ACCT_010 -> "TOTAL ASSETS"
            ACCT_083 -> "Number of current members (not number of accounts)"

ACCT_010: 13376472 is not an answer. Every tool that returns a value joins the dictionary and returns the label with it, and ncua_account_lookup resolves any code — including the 3,179 that have a definition but no reported values.

What is mirrored, and what is not

We store the 197 accounts NCUA itself flags as its Financial Performance Report, which is NCUA's curation rather than ours. That is ~165k non-zero values a quarter; the full 3,376 would be 1.33M a quarter, eight times the storage for a long tail nobody has asked for.

The complete dictionary is mirrored regardless, so an account we hold no values for is still explainable rather than unknown — ncua_account_lookup returns mirrored_values: false for those.

Quarters	20 (2021-06 .. 2026-03)
Values	3.84M
Branches / ATMs	22,829 / 17,588 — current quarter only
Footprint	692 MB, of which 440 MB is indexes

Why this is a mirror

NCUA publishes no API. ncua.gov/api/* returns 404, and mapping.ncua.gov (the Credit Union Locator) is an Angular app that serves the same HTML for every path — it is a client-side UI, not an endpoint. The only machine-readable form is the quarterly bulk archive, ~7.7 MB compressed across 26 files.

Ingest: workers/data-pipeline/src/datasets/ncua.ts (scheduled) and scripts/ingest-ncua.mjs (backfill and one-off repair). Schema: supabase/migrations/071_ncua.sql.

Data sources

• https://ncua.gov/analysis/credit-union-corporate-call-report-data/quarterly-data — the quarterly archive index.
• https://ncua.gov/files/publications/analysis/call-report-data-YYYY-MM.zip — one release.

Things the next person would otherwise rediscover

• Three URL conventions for the same file. call-report-data-2016-03.zip (current), Call-Report-Data-2015-06.zip (capitalised), and older QCR201406.zip under /files/publications/data-apps/. A resolver that knows only the current one silently starts history in 2016.
• ~56-day publication lag. The 2026-03-31 cycle was stamped 2026-05-26. The current calendar quarter is normally not the newest data. The freshness SLA is 200 days for this reason; anything tighter false-fails every cycle.
• Not every account code starts with ACCT_. NCUA's diversity fields are BOARDBLACKAMERICAN, CURMEMHISPANICAMERICAN, FOMMINORITYSTATUS. Filtering columns on /^ACCT_/ looks harmless and silently drops all 15 of them — the whole minority-depository dataset.
• The data is 91% sparse, and the zeros are real. FS220K.txt is entirely zero in some quarters. That is what the source says; do not coerce it to null.
• A missing credit union merged or liquidated. The count falls every quarter (5,136 in 2021 → 4,336 now). An empty result for a charter is not a bad charter number.
• CU_NUMBER is NCUA's charter number, not RSSD. Both are carried; RSSD is the join key to Fed/FFIEC data.
• net_income (ACCT_602) is reported by fewer than half of credit unions — NCUA requires it only when the amount is not already inside Undivided Earnings. A null there is a filing rule, not zero income, and the response says so.
• No coordinates. NCUA publishes branch addresses without lat/lon, so location search is a text match on city/state/ZIP. Do not promise "near me".

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "ncua": {
      "url": "https://gateway.pipeworx.io/ncua/mcp"
    }
  }
}

What this endpoint actually serves

tools/list at https://gateway.pipeworx.io/ncua/mcp returns the tools in the table above plus the shared Pipeworx meta-tools — ask_pipeworx, discover_tools, search_within, remember/recall and the rest of the gateway-wide set. So the tool count you see is larger than this table: a single-pack endpoint currently lists roughly 30 shared tools alongside the pack's own. The connection's initialize response states its exact scope, and is the authoritative answer for a given day.

This is deliberate, not multiplexing by accident. The meta-tools are what let a scoped connection answer a question this pack does not cover — via ask_pipeworx, which routes across the whole catalog — without you adding a second MCP server. There is currently no way to mount a pack endpoint without them; if the extra schemas cost you more context than the routing is worth, connect to the full gateway once rather than to several pack endpoints.

Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Both URLs reach the same gateway and the same 1573+ data sources. The only difference is which pack's tools are listed directly; ask_pipeworx reaches all of them from either one.

Standalone (no gateway account)

This package also runs as a local stdio MCP server — no Pipeworx account, no gateway round-trip:

{
  "mcpServers": {
    "ncua": {
      "command": "npx",
      "args": ["-y", "@pipeworx/mcp-ncua"]
    }
  }
}

Or run it directly to confirm it starts:

npx -y @pipeworx/mcp-ncua

It speaks MCP over stdin/stdout and answers initialize/tools/list/tools/call for only this pack's tools — none of the shared meta-tools the gateway connection above adds. Same source, same tools, no ask_pipeworx routing.

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:

ask_pipeworx({ question: "your question about Ncua data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides
• pipeworx.io

License

MIT