Dartmouth Advisory Partners Change API
The Change API from Dartmouth Advisory Partners — 1 operation(s) for change.
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OpenAPI Specification
openapi: 3.2.0
info:
title: DAP Bellwether Change API
version: 1.0.0
summary: Publications from financial regulators in Canada, the US, the UK and the EU, as JSON.
description: 'The records behind the DAP Bellwether connector, for agents and systems that call HTTP rather than MCP. The same records are free for people through the connector at https://bellwether.dap.solutions/mcp. Priced from the first call at $0.01 in USDC on Base, paid per call with x402 v2 (exact scheme) through DAP Agent Payments: call without payment, read the price from the PAYMENT-REQUIRED header of the 402, and call again with a signed payment in PAYMENT-SIGNATURE. The answer is released after the payment settles, with the settlement record in PAYMENT-RESPONSE. A request refused before or after payment is never charged. A licensed institution sends its DAP licence key instead and is invoiced for what it used. This is a public information service. It is not legal or compliance advice.'
termsOfService: https://dap.solutions/terms/api/
contact:
name: Dartmouth Advisory Partners
email: bsibeth@dap.solutions
url: https://bellwether.dap.solutions
servers:
- url: https://bellwether.dap.solutions
security:
- {}
- licenceKey: []
- licenceKeyHeader: []
tags:
- name: Change
paths:
/api/change:
get:
operationId: getRegulatoryChange
x-payment-info:
protocols:
- x402
price:
mode: fixed
currency: USD
amount: '0.01'
summary: One record in full, with every revision observed since first collection
description: Use when you have a record id and need to know whether the publication was amended and what changed. Returns the record in full with every revision observed since first collection. $0.01 USDC on Base per call via x402. A refused request is never charged. A record that does not exist answers 404 and is never charged.
parameters:
- name: id
in: query
required: true
description: Record id from a search or recent result.
schema:
type: string
pattern: ^[0-9a-f]{32}$
responses:
'200':
description: The record and its revisions, oldest first.
headers:
PAYMENT-RESPONSE:
description: The x402 settlement record, base64 JSON. Present on a paid answer.
schema:
type: string
content:
application/json:
schema:
type: object
required:
- record
- revisions
properties:
record:
$ref: '#/components/schemas/Record'
revisions:
type: array
items:
type: object
properties:
revision:
type: integer
observed_at:
type: string
format: date-time
title:
type:
- string
- 'null'
summary:
type:
- string
- 'null'
url:
type:
- string
- 'null'
notice:
type: string
'400':
description: The request was refused before any payment. Never charged.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'401':
description: A DAP licence key was sent and is not recognized or has been revoked.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'402':
description: Payment required. The x402 v2 price is in the PAYMENT-REQUIRED header (base64 JSON) and repeated in the body.
headers:
PAYMENT-REQUIRED:
schema:
type: string
content:
application/json:
schema:
type: object
'404':
description: No record with that id. Never charged.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'503':
description: The payment service or licence check is unavailable. Nothing was charged. Retry shortly.
tags:
- Change
components:
schemas:
Record:
type: object
required:
- id
- regulator
- jurisdiction
- category
- title
- published_at
- first_collected_at
- revision
properties:
id:
type: string
pattern: ^[0-9a-f]{32}$
regulator:
type: string
jurisdiction:
type: string
enum:
- CA
- US
- UK
- EU
category:
type: string
enum:
- rules
- enforcement
- guidance
- news
title:
type: string
summary:
type:
- string
- 'null'
url:
type:
- string
- 'null'
format: uri
published_at:
type:
- string
- 'null'
description: 'The publication date the regulator gave. Null when the source publishes none: collection time is never put in its place.'
first_collected_at:
type: string
format: date-time
last_confirmed_at:
type: string
format: date-time
revision:
type: integer
minimum: 1
description: Above 1 when the record was amended after first collection.
Error:
type: object
required:
- error
properties:
error:
type: string
message:
type: string
securitySchemes:
licenceKey:
type: http
scheme: bearer
description: A DAP licence key (dapk_...), issued to an institution under a licence and invoiced by usage. Contact bsibeth@dap.solutions.
licenceKeyHeader:
type: apiKey
in: header
name: X-API-Key
description: The same DAP licence key, for platforms that set an API key header.
externalDocs:
description: DAP Agent Payments
url: https://dap.solutions/solutions/systems/agent-payments/