Developer API

Structured FEC data via REST API. Live 2026 election tracking, 538 current members, 13.8M+ FEC contributions. Votes updated daily, races and members weekly, contributions monthly.

Quick Start

Get your first result in 30 seconds. No credit card required.

1. Get your API key

2. Make your first request

curl -H "x-api-key: YOUR_KEY" https://whoboughtmyrep.com/api/v1/reps?state=GA&chamber=senate

Example Response

All endpoints return { success, data, meta }. Paginated responses include meta.count, meta.offset, and meta.limit (default 20, max 100). All keys are prefixed wbr_.

{
  "success": true,
  "data": [
    {
      "bioguide_id": "W000790",
      "name": "Warnock, Raphael G.",
      "party": "Democratic",
      "state": "GA",
      "chamber": "senate",
      "total_raised": 338000860.99,
      "total_funding": 411638341.95,
      "pac_percent": 0.91,
      "small_donor_percent": 68.4,
      "ie_support_total": 73637480.96,
      "grassroots_chamber_rank": 2
    }
  ],
  "meta": { "count": 2, "offset": 0, "limit": 20 }
}

Note: pac_percent and small_donor_percent are already percentages (e.g. 0.91 = 0.91%, not 91%).

Endpoints

Base URL: https://whoboughtmyrep.com/api/v1

Endpoint	Tier	Description	Parameters
`GET /reps`	Free	List & search current members of Congress	q, state, chamber, party, limit, offset
`GET /reps/{id}`	Free	Full politician profile + top industries	id = bioguide_id
`GET /reps/{id}/committees`	Free	Congressional committee memberships	none (id in path)
`GET /challengers`	Free	Challenger & candidate data (default: 2026 cycle)	state, office, party, cycle, incumbent_challenge (I/C/O), limit, offset
`GET /industries`	Free	Industry funding overview across all members	limit
`GET /elections`	Free	2026 race data with funding totals	state, office, cook_rating, limit, offset
`GET /reps/{id}/donors`	Pro	Paginated individual donor list	limit, offset
`GET /reps/{id}/pac-donors`	Pro	PAC contributions to a politician	limit, offset
`GET /reps/{id}/industry-votes`	Pro	Industry money → voting record connections	industry, limit, offset
`GET /reps/{id}/votes`	Pro	Individual voting record	limit, offset
`GET /donors/search`	Pro	Search donors by name across all members	q, limit
`GET /pacs/{id}`	Pro	PAC profile + top funders	id = FEC committee ID
`GET /reps/{id}/independent-expenditures`	Enterprise	Outside spending for/against a politician	sup_opp (S=support, O=oppose), cycle, limit, offset
`GET /roll-calls`	Enterprise	Full roll call votes with party breakdowns	chamber, congress, vote_category, limit, offset

Authentication

Pass your API key in the x-api-key header with every request.

fetch('https://whoboughtmyrep.com/api/v1/reps', { headers: { 'x-api-key': 'wbr_your_key_here' } })

Rate Limits

Limits reset at midnight UTC. Rate limit headers are included in every response.

Tier	Rate Limit	Price
Free	100 requests/day	$0
Pro	5,000 requests/day	$49/mo
Enterprise	Unlimited	$199/mo

Upgrade Plan

Error Responses

Errors return a JSON body with an error field and the appropriate HTTP status code.

401  { "error": "Invalid or missing API key" }
403  { "error": "Pro or Enterprise tier required..." }
429  { "error": "Too Many Requests" }  // + Retry-After header
500  { "error": "Query failed" }

Data Notes

All data is sourced from the Federal Election Commission (FEC) and Congress.gov. Campaign finance data covers the 2020 cycle through present.

total_funding = total_raised + ie_support_total. Use this as the denominator for percentage calculations, not total_raised alone.

Industry attribution traces every dollar back through PAC hops. total_attributed is campaign-only (direct + PAC hops). IE spending is in ie_attributed_support_total separately.

Donations under $200 are not individually itemized by the FEC. small_donor_total reflects the aggregate from FEC summary filings.

Names are stored in FEC format: Last, First M.

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