API

The pages on this site are built on a small set of read-only JSON endpoints. They are public and can be called directly. No key is required at present. Responses are served from the same database as the site, so a figure returned here matches what the page shows.

Endpoints and fields may change without notice while the site is in beta. If you build on them, get in touch through the contact address on the About page so we can warn you before a breaking change.

Endpoints

GET /api/v1/search: Entity name search, used for autocomplete.
q search text, at least 2 characters
limit max results, default 10, max 50
GET /api/v1/ego: An entity and its immediate connections, as nodes and edges.
id entity UUID (required)
limit max neighbour nodes, default 25, max 100
GET /api/v1/graph: The aggregated donor, PAC, and recipient flow graph used by the money-flow diagram.
sector sector tag, for example crypto
party D or R, filters person entities
limit max donation flows, default 200
GET /api/v1/elections: Donor to PAC to candidate to result flows for a cycle, with summary counts.
year election year
state two-letter state code
office senate or house
sector sector tag
GET /api/v1/geo: Donation totals by US state, for money originating in and flowing to each state.
GET /api/v1/insider-trading: Congressional stock transactions grouped by member.
chamber house or senate
ticker stock symbol
from, to ISO dates bounding the transaction date
GET /api/v1/policy-events: Finance-sector policy events, each with the positions taken on it.
type vote, enforcement, or rulemaking
regulator fed, occ, fdic, sec, cftc, cfpb, doj, treasury, fincen, fsoc, congress, other
sector financial sector slug
from, to ISO dates bounding the event date
limit, offset pagination, limit default 50, max 200
GET /api/v1/policy-events/{slug}: One policy event with positions, evidence, and tracked spending in its window.
GET /api/v1/health: Liveness check.

Example

curl "https://www.purchasingpolicy.org/api/v1/search?q=fairshake&limit=5"

Entity IDs returned by search can be passed to the ego endpoint, and correspond to the entity pages at /entity/{id}.

q	search text, at least 2 characters
limit	max results, default 10, max 50

id	entity UUID (required)
limit	max neighbour nodes, default 25, max 100

sector	sector tag, for example crypto
party	D or R, filters person entities
limit	max donation flows, default 200

year	election year
state	two-letter state code
office	senate or house
sector	sector tag

chamber	house or senate
ticker	stock symbol
from, to	ISO dates bounding the transaction date

type	vote, enforcement, or rulemaking
regulator	fed, occ, fdic, sec, cftc, cfpb, doj, treasury, fincen, fsoc, congress, other
sector	financial sector slug
from, to	ISO dates bounding the event date
limit, offset	pagination, limit default 50, max 200