Openfec MCP Server

Name: Openfec MCP Server
Author: cyanheads

by cyanheadsversion 0.10.0i★ –iComputer or cloud

Registry nameio.github.cyanheads/openfec-mcp-server

Install

Overview

Description from the maker (original English)

Access FEC campaign finance data. Query data about candidates, money trails, and election filings.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi3 of 3 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Accounting, finance & tax

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 3 of 3 passed
Runs on the maker’s server: what you ask it goes through their server.
Can do 12 things (tools) openfec_search_candidates, openfec_search_committees, openfec_get_committee_totals, openfec_search_contributions …
You fill in yourself: FEC_API_KEY, MCP_LOG_LEVEL

You need

Runs in the cloudNothing to install; it connects over the internet
npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://openfec.caseyjhand.com/mcp

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "openfec": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/openfec-mcp-server"
      ],
      "env": {
        "FEC_API_KEY": "your-value",
        "MCP_LOG_LEVEL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http openfec https://openfec.caseyjhand.com/mcp

Or run it on your computer

claude mcp add openfec --env FEC_API_KEY=your-value --env MCP_LOG_LEVEL=your-value -- npx -y @cyanheads/openfec-mcp-server

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "openfec": {
      "url": "https://openfec.caseyjhand.com/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "openfec": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/openfec-mcp-server"
      ],
      "env": {
        "FEC_API_KEY": "your-value",
        "MCP_LOG_LEVEL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "openfec": {
      "type": "http",
      "url": "https://openfec.caseyjhand.com/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "openfec": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/openfec-mcp-server"
      ],
      "env": {
        "FEC_API_KEY": "your-value",
        "MCP_LOG_LEVEL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://openfec.caseyjhand.com/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

FEC_API_KEY env
OpenFEC API key — optional (DEMO_KEY: 30 req/hr). Own key: 1000 req/hr. Free at api.data.gov.
MCP_LOG_LEVEL env
Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 7, 2026. The maker wrote them, not us; we show them as plain text.

openfec_search_candidates
Find federal candidates by name, state, office, party, or cycle. Retrieve a specific candidate by FEC ID with financial totals. Candidate IDs start with H (House), S (Senate), or P (President) followed by exactly eight letters or digits.
openfec_search_committees
Find political committees (campaign, PAC, Super PAC, party) by name, type, candidate affiliation, or state. Retrieve a specific committee by FEC ID. Committee IDs start with C followed by exactly eight digits (e.g., C00358796).
openfec_get_committee_totals
Get pre-aggregated committee financial totals — receipts, disbursements, cash on hand, debts, and the itemized/unitemized breakdown — without paginating Schedule A. Use mode "single" (the default) with a committee_id for one committee's totals, one row per two-year cycle it has f
openfec_search_contributions
Search itemized individual contributions (Schedule A) or get aggregate breakdowns by size, state, employer, or occupation. Use to answer "who is funding this committee?" Itemized mode requires a committee_id. Aggregate by_size/by_state can use candidate_id instead.
openfec_search_disbursements
Search itemized committee spending (Schedule B) or get aggregate breakdowns by purpose or recipient. All modes require a committee_id. Use to answer "what is this committee spending money on?" or "who is receiving payments from this committee?"
openfec_search_expenditures
Search independent expenditures (Schedule E) — outside spending supporting or opposing federal candidates. Covers Super PACs, party committees, and other groups. Use itemized mode for individual expenditure records, or by_candidate for aggregated totals per candidate; by_candidat
openfec_search_coordinated_expenditures
Search coordinated party expenditures (Schedule F) — spending a party committee makes on behalf of a candidate it supports, in coordination with that campaign. Distinct from independent expenditures (openfec_search_expenditures), which cannot be coordinated with the candidate, an
openfec_search_filings
Search FEC filings and reports by committee, candidate, form type, or date range. Covers financial reports (F3/F3P/F3X), statements of candidacy (F2), organizational filings (F1), 24-hour IE notices (F24), and amendments.
openfec_lookup_elections
Look up federal election races and candidate financial summaries. Find who's running in a race with fundraising totals, or get an aggregate race summary.
openfec_search_legal
Search FEC legal documents: advisory opinions, enforcement cases (MURs), alternative dispute resolutions, administrative fines, and statutes. The citation, penalty, respondent, ao_number, and case_number filters each apply to only some document types; with type omitted, the searc
openfec_get_legal_document
Fetch one FEC legal document — advisory opinion, MUR, ADR, administrative fine, or statute — by its type and number. openfec_search_legal replaces each result's documents and dispositions arrays with a count and category summary and cuts every commission vote down to a date and a
openfec_lookup_calendar
Look up FEC calendar events, filing deadlines, and election dates. Use to find upcoming filing windows for a committee, locate when a federal election occurred, or scope FEC events by date range and category.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account cyanheads, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 494 ms (HTTP 200)
– Not applicable
Sign-in with OAuth
No sign-in needed
✓ Pass
No hidden instructions in tool descriptions
Read 12 tool descriptions and found no hidden instructions to the AI

Compared with others in Accounting, finance & taxi

More stars than 0% of the other 1734 servers in this category
Published to the registry more recently than 79% of the other 1734 servers in this category
Basic checks equal to or better than 100% of the other 1734 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Openfec MCP Server safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.10.0) reached the registry 10 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Finance Toolkit, SolidInvoice, Korea Tax Calculator

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@cyanheads/openfec-mcp-server Access FEC campaign finance data on candidates, money trails, and election filings via MCP. STDIO or Streamable HTTP. 12 Tools • 5 FEC Resource Templates • 2 Prompts • 1 Skill

Public Hosted Server: https://openfec.caseyjhand.com/mcp

Overview

US federal campaign finance data from the FEC's OpenFEC API. Search candidates, committees, and filings, trace contributions (Schedule A), disbursements (Schedule B), and independent and coordinated party expenditures (Schedules E/F), and look up election races, legal documents, and filing deadlines.

Tools

Tool	Description
`openfec_search_candidates`	Find federal candidates by name, state, office, party, or cycle; fetch one by FEC ID with financial totals
`openfec_search_committees`	Find political committees by name, type, candidate affiliation, or state; fetch one by FEC ID
`openfec_get_committee_totals`	Pre-aggregated financial totals for one committee by cycle, or ranked across committees of one entity type
`openfec_search_contributions`	Itemized contributions (Schedule A), or aggregates by size, state, employer, or occupation
`openfec_search_disbursements`	Itemized committee spending (Schedule B), or aggregates by purpose or recipient
`openfec_search_expenditures`	Independent expenditures (Schedule E) supporting or opposing candidates, itemized or totaled per candidate
`openfec_search_coordinated_expenditures`	Coordinated party expenditures (Schedule F) made on behalf of a candidate
`openfec_search_filings`	FEC filings and reports by committee, candidate, form type, or date range
`openfec_lookup_elections`	Candidates in a federal race with their fundraising totals, or an aggregate race summary
`openfec_search_legal`	Advisory opinions, enforcement cases, alternative dispute resolutions, administrative fines, and statutes
`openfec_get_legal_document`	One legal document in full, including the arrays search trims away, paged by entry when too large for one response
`openfec_lookup_calendar`	FEC calendar events, filing deadlines, and election dates

Resources

Resource	Description
`openfec://candidate/{candidate_id}`	Candidate profile with financial totals and principal committees
`openfec://committee/{committee_id}`	Committee profile with type, designation, and financial summary
`openfec://election/{cycle}/{office}`	Presidential race with candidate financial totals
`openfec://election/{cycle}/{office}/{state}`	Senate or at-large House race with candidate financial totals
`openfec://election/{cycle}/{office}/{state}/{district}`	House district race with candidate financial totals

The same data is reachable through openfec_search_candidates, openfec_search_committees, and openfec_lookup_elections for tool-only clients.

The openfec-guide skill covers campaign-finance investigations, historical committee attribution, and coverage checks. MCP clients can read it at skill://openfec-guide/SKILL.md.

Prompts

Prompt	Description
`openfec_money_trail`	Trace the money around a candidate: direct fundraising, PAC support, independent expenditures, and party spending
`openfec_campaign_analysis`	Structured analysis of a candidate's financial position

Capability reference

`openfec_search_candidates` tool

query name search filtered by state, district, office, party, cycle, election_year, incumbent_challenge, candidate_status, and has_raised_funds, up to 100 per page; or a candidate_id lookup (H/S/P + eight letters or digits) returning one full record
include_totals (default on for an ID lookup) adds per-cycle totals rows and caps a search page at 35 candidates when cycle or election_year scopes the totals, 5 when they span every cycle; candidates the totals fetch didn't reach are listed in missing_totals
Typed errors: candidate_not_found, inputs_not_applicable_to_id_lookup

`openfec_search_committees` tool

query name search filtered by candidate_id, state, party, committee_type, designation, cycle, and treasurer_name, up to 100 per page; or a committee_id lookup (C + eight digits)
Typed errors: committee_not_found, inputs_not_applicable_to_id_lookup

`openfec_get_committee_totals` tool

mode: "single" (default) takes a committee_id and returns one row per two-year cycle; mode: "by_entity_type" ranks every committee of one entity_type (presidential, pac, party, pac-party, house-senate, ie-only), filterable by state, type, designation, organization type, and receipts/disbursements bounds; up to 100 per page
Rows carry receipts, disbursements, cash on hand, debts, and the itemized/unitemized split; the output mode says whether rows are cycles or committees
Typed errors: committee_id_required_for_single_mode, entity_type_required_for_group_mode, committee_totals_not_found

`openfec_search_contributions` tool

itemized (default) needs a committee_id and filters by contributor name, employer, occupation, city, state, ZIP, date and amount ranges, and is_individual, 30 rows per page; by_size / by_state take a committee_id or candidate_id, by_employer / by_occupation a committee_id
The output mode becomes by_size_candidate or by_state_candidate when scoped by candidate, a different row shape; itemized responses carry next_cursor, count, and count_is_approximate
Typed errors: itemized_requires_committee_id, aggregate_requires_committee_id

`openfec_search_disbursements` tool

committee_id required in every mode: itemized (default; recipient name, state, city, and committee ID, description, purpose category, date and amount ranges, 30 rows per page), by_purpose, by_recipient, by_recipient_id
Itemized responses carry next_cursor, count, and count_is_approximate; aggregate modes page by number

`openfec_search_expenditures` tool

itemized (default) filters by committee, candidate, support_oppose, payee, targeted office/state/district, party, is_notice (24/48-hour notices), dates, and amounts; most_recent defaults to true; 60 rows per page when scoped by committee_id, 30 otherwise
by_candidate totals need a candidate_id or a full race scope (candidate_office=P alone, S plus candidate_office_state, H plus state and candidate_office_district), or fail as by_candidate_requires_scope

`openfec_search_coordinated_expenditures` tool

Scope by spending party committee_id, benefiting candidate_id, cycle, payee, dates, and amounts; unscoped queries span all years
Page-based, 80 rows per page when scoped by committee_id and 25 otherwise; rows carry subordinate_committee_id, the committee the spending is attributed to

`openfec_search_filings` tool

Filters: committee_id, candidate_id, filer_name, form_type (F3, F3P, F3X, F24, F1, F2, F5), report_type, report_year, cycle, is_amended, and receipt date range; 65 rows per page
most_recent defaults to true, hiding superseded amendments; rows carry form and report type, financial totals, and pdf_url

`openfec_lookup_elections` tool

office and an even cycle are required; Senate also needs state and House state plus district, unless a zip scopes a search
mode: "search" (default) returns the race's candidates with totals and candidate_pcc_id / candidate_pcc_name, that cycle's principal campaign committee; mode: "summary" returns one aggregate race row
Typed errors: cycle_must_be_even, missing_state_for_office, missing_district_for_house, summary_does_not_support_zip

`openfec_search_legal` tool

type (advisory_opinions, murs, adrs, admin_fines, statutes), query, ao_number, case_number, respondent, citations, penalty bounds, or dates; at least one is required (missing_filter), and a date bound needs type plus a date_kind that type records
Citations, penalty bounds, respondent, ao_number, and case_number each filter only some types; one sent with a type it doesn't filter fails as filter_not_valid_for_type, and with type omitted the search returns only the types they all apply to, with a total over those types. On MURs and ADRs a citation can't be combined with case_number, respondent, a penalty bound, or an open/close date bound, which upstream would ignore; the two citation fields together match either one
Citations take the form upstream parses — 52 U.S.C. 30104 or 11 CFR 110.1 (USC, C.F.R., §, and suffixes like 30104(g) are fine); a bare 30106 or 110.1 fails as invalid_citation instead of silently returning unfiltered results. One citation per field: upstream applies only the first citation in a value, so 52 U.S.C. 30104, 52 U.S.C. 30118 fails the same way
Offset paging via from_hit / hits_returned, up to 200 per type within a 10,000-result window
Results are trimmed: documents becomes document_count and document_categories, dispositions becomes disposition_count and disposition_categories, highlights stop at 3 with their match markup removed and render one per line, and commission_votes shrink to a date and a 200-character action; openfec_get_legal_document returns the full record
Each response stays under 100,000 bytes: whole results are admitted one type at a time until the next would not fit, and a page that held some back reports truncated, shown, and nextFromHit — the from_hit that continues each type, passed

Only the beginning is shown; read the rest in the repo

Openfec MCP Server

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Accounting, finance & taxi

Common questions

Alternatives

Finance Toolkit

SolidInvoice

Korea Tax Calculator

README from the maker

Overview

Tools

Resources

Prompts

Capability reference

openfec_search_candidates tool

openfec_search_committees tool

openfec_get_committee_totals tool

openfec_search_contributions tool

openfec_search_disbursements tool

openfec_search_expenditures tool

openfec_search_coordinated_expenditures tool

openfec_search_filings tool

openfec_lookup_elections tool

openfec_search_legal tool

`openfec_search_candidates` tool

`openfec_search_committees` tool

`openfec_get_committee_totals` tool

`openfec_search_contributions` tool

`openfec_search_disbursements` tool

`openfec_search_expenditures` tool

`openfec_search_coordinated_expenditures` tool

`openfec_search_filings` tool

`openfec_lookup_elections` tool

`openfec_search_legal` tool