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Library of Congress

Library of Congress amendments API

Returns amendment data from the API

Documentation Provider Profile APIs.io OpenAPI GitHub

Library of Congress amendments API is one of 25 APIs that Library of Congress publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Amendments. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and a GitHub repository.

This API exposes 8 operations across 8 paths, and defines 15 schemas. It is described by OpenAPI 3.0.3, at version 3.

Requests are made against a single base URL, /v3.

8 operations 8 paths 15 schemas 8 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.3
API Version
3
Base URL
https://www.loc.gov
Authentication
API Key
Resource Areas
1

Authentication & Security 1

Library of Congress amendments API declares 1 security scheme for authenticating requests. An API key is passed in the query as api_key (ApiKeyAuth). By default, every request must be authenticated.

Paths & Operations 8

Across 8 paths, the API surfaces 8 operations — 8 GET. Each is listed below with its method, path, parameters, and response codes.

amendments 8

Returns amendment data from the API

GET
/amendment
Returns a list of amendments sorted by date of latest action.
5 params → 200400
GET
/amendment/{congress}
Returns a list of amendments filtered by the specified congress, sorted by date of latest action.
6 params → 200400
GET
/amendment/{congress}/{amendmentType}
Returns a list of amendments filtered by the specified congress and amendment type, sorted by date of latest action.
7 params → 200400
GET
/amendment/{congress}/{amendmentType}/{amendmentNumber}
Returns detailed information for a specified amendment.
8 params → 200400
GET
/amendment/{congress}/{amendmentType}/{amendmentNumber}/actions
Returns the list of actions on a specified amendment.
6 params → 200400
GET
/amendment/{congress}/{amendmentType}/{amendmentNumber}/cosponsors
Returns the list of cosponsors on a specified amendment.
6 params → 200400
GET
/amendment/{congress}/{amendmentType}/{amendmentNumber}/amendments
Returns the list of amendments to a specified amendment.
6 params → 200400
GET
/amendment/{congress}/{amendmentType}/{amendmentNumber}/text
Returns the list of text versions for a specified amendment from the 117th Congress onwards.
6 params → 200400

Schemas 15

The contract defines 15 schemas that model the data the API accepts and returns. The most detailed are CoSponsor (10 properties), AmendmentNumber (10 properties), Sponsor (9 properties), amendedBill (8 properties). Each schema is shown below with its type and property counts.

AmendmentText
array
CoSponsor
object
10 properties
AmendmentActions
array
Amendment
object
8 properties
formats
object
2 properties
Sponsor
object
9 properties
textVersions
object
3 properties
amendmentActions
object
5 properties
AmendmentAmendments
array
AmendmentNumber
object
10 properties
AmendmentCosponsors
array
sourceSystem
object
2 properties
recordedVote
object
6 properties
amendedBill
object
8 properties
textVersion
object
2 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

loc-amendments-api-openapi.yml Raw ↑

Other APIs Library of Congress publishes across the network.

Chronicling America API
AE Profile APIs.io
Library of Congress bill API
AE Profile APIs.io
Library of Congress bound-congressional-record API
AE Profile APIs.io
Library of Congress collections API
AE Profile APIs.io
Library of Congress committee API
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Library of Congress committee-meeting API
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Library of Congress committee-print API
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Library of Congress committee-report API
AE Profile APIs.io
Library of Congress congress API
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Library of Congress congressional-record API
AE Profile APIs.io
Library of Congress crsreport API
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Library of Congress daily-congressional-record API
AE Profile APIs.io
#Amendments
← Back to L APIs
API Details
ID
loc:loc-amendments-api
Base URL
https://www.loc.gov
Docs
https://www.loc.gov/apis/json-and-yaml/
Provider
Library of Congress
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