Moment Transactions API
The Transactions API from Moment — 2 operation(s) for transactions.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Transactions API
description: An HTTP/JSON API for looking up historical agency, corporate, and municipal bond transactions.
version: 0.1.0
servers:
- url: https://live.moment-api.com
- url: https://paper.moment-api.com
security:
- ApiKeyAuth: []
tags:
- name: Transactions
paths:
/v1/transactions/{instrument_id}/:
summary: Historical transactions for a specific bond.
get:
summary: List historical transactions
tags:
- Transactions
operationId: getTransactions
parameters:
- name: instrument_id
in: path
description: CUSIP or ISIN.
schema:
type: string
required: true
- name: start
in: query
description: Exclude transactions that occurred before the 'start' time. If not specified, the server will return all transactions.
schema:
type: string
format: date-time
- name: end
in: query
description: Exclude transactions that occurred after the 'end' time. Defaults to the current time if not specified.
schema:
type: string
format: date-time
- name: page_size
in: query
description: The maximum number of results per page. Defaults to 1000 if not specified. Maximum allowed value is 1000.
schema:
type: integer
minimum: 1
maximum: 1000
- name: page_token
in: query
description: A pointer to the next page of results. If not specified, the server will return the first page of results. If specified, all parameters except 'page_size' must match the request that returned the token.
schema:
type: string
responses:
'200':
description: One page of results.
content:
application/json:
schema:
$ref: '#/components/schemas/TransactionsPage'
example:
count: -1
data:
- counterparty: CUSTOMER
id: BTDS-144A9022820250716
isin: US501797AW48
price: 102.073
quantity: 50000
side: SELL
spread: 33
timestamp: '2025-07-16T12:07:13-04:00'
ytm: 5.93
ytw: 5.902
- counterparty: CUSTOMER
id: BTDS-144A1450620250716
isin: US501797AW48
price: 102.279
quantity: 200000
side: SELL
spread: 28
timestamp: '2025-07-16T09:17:23-04:00'
ytm: 5.86
ytw: 5.831
next: https://example.com/v1/transactions/US501797AW48/?page_size=2&page_token=eyJpc2luIjoiVVM1MDE3OTdBVzQ4Iiwic3RhcnQiOiIyMDI1LTA3LTE1VDEyOjAwOjAwLTA0OjAwIiwiZW5kIjoiMjAyNS0wNy0yN1QyMzo1MDo1Ni40MzQ4MjQtMDQ6MDAiLCJvZmZzZXQiOjJ9&start=2025-07-15T12%3A00%3A00-04%3A00
prev: null
'400':
description: Invalid request parameters.
content:
application/json:
schema:
type: object
description: Standard error response format returned by all API endpoints.
properties:
error:
type: string
description: Human-readable error message describing what went wrong.
error_details:
description: Additional structured information about the error.
x-go-type: any
x-go-type-skip-optional-pointer: true
x-oapi-codegen-extra-tags:
exhaustruct: optional
error_type:
type: string
description: High-level error category for programmatic error handling.
enum:
- invalid_request
- not_found
- server_error
- unauthorized
- rate_limited
- forbidden
- closed
- not_implemented
- resource_conflict
x-enum-varnames:
- ErrorTypeInvalidRequest
- ErrorTypeNotFound
- ErrorTypeServerError
- ErrorTypeUnauthorized
- ErrorTypeRateLimited
- ErrorTypeForbidden
- ErrorTypeNeedsMarketState
- ErrorTypeNotImplemented
- ErrorTypeResourceConflict
required:
- error
- error_type
/v1/transactions/{instrument_id}/summary/:
summary: Daily summary statistics for a given instrument.
get:
summary: Retrieve daily summary statistics for a given instrument
tags:
- Transactions
operationId: getDailyTransactionSummaries
parameters:
- name: instrument_id
in: path
description: CUSIP or ISIN.
schema:
type: string
required: true
- name: start
in: query
description: The earliest date for which we want summary statistics.
schema:
type: string
format: date
- name: end
in: query
description: The most recent date for which we care about summary statistics.
schema:
type: string
format: date
- name: page_size
in: query
description: The maximum number of daily summaries per page of results. Defaults to 1000 if not specified. Maximum allowed value is 1000.
schema:
type: integer
minimum: 1
maximum: 100
- name: page_token
in: query
description: A pointer to the next page of results. If not specified, the server will return the first page of results. If specified, all parameters except 'page_size' must match the request that returned the token.
schema:
type: string
responses:
'200':
description: One page of results.
content:
application/json:
schema:
$ref: '#/components/schemas/DailySummariesPage'
'400':
description: Invalid request parameters.
content:
application/json:
schema:
$ref: '#/paths/~1v1~1transactions~1{instrument_id}~1/get/responses/400/content/application~1json/schema'
components:
schemas:
DailySummary:
type: object
properties:
date:
type: string
format: date
buy_volume:
type: integer
description: Cumulative face value of buy transactions on 'date'.
sell_volume:
type: integer
description: Cumulative face value of sell transactions on 'date'.
inter_dealer_volume:
type: integer
description: Cumulative face value of inter-dealer transactions on 'date'.
high_price:
type: number
description: Highest price of any transaction on 'date'.
x-go-type: decimal.Decimal
x-go-type-import:
path: github.com/shopspring/decimal
low_price:
type: number
description: Lowest price of any transaction on 'date'.
x-go-type: decimal.Decimal
x-go-type-import:
path: github.com/shopspring/decimal
total_volume:
type: integer
description: Cumulative face value of all transactions on 'date'.
required:
- date
- buy_volume
- sell_volume
- inter_dealer_volume
- high_price
- low_price
- total_volume
Transaction:
type: object
properties:
id:
type: string
description: Unique identifier for this transaction.
isin:
type: string
description: ISIN of the bond.
quantity:
type: integer
description: The face value of the transaction.
side:
type: string
enum:
- BUY
- SELL
description: Whether this was a buy or sell transaction.
price:
type: number
description: Percentage of par value.
x-go-type: decimal.Decimal
x-go-type-import:
path: github.com/shopspring/decimal
ytw:
type: number
description: Yield to worst.
x-go-type: decimal.NullDecimal
x-go-type-import:
path: github.com/shopspring/decimal
ytm:
type: number
description: Yield to maturity.
x-go-type: decimal.NullDecimal
x-go-type-import:
path: github.com/shopspring/decimal
spread:
type: number
description: Spread to benchmark in basis points.
x-go-type: decimal.NullDecimal
x-go-type-import:
path: github.com/shopspring/decimal
counterparty:
type: string
enum:
- ATS
- CUSTOMER
- DEALER
- NON_MEMBER_AFFILIATE
description: Type of counterparty in the transaction.
timestamp:
type: string
format: date-time
description: When the transaction occurred.
required:
- id
- isin
- quantity
- side
- price
- ytw
- ytm
- spread
- counterparty
- timestamp
example:
counterparty: CUSTOMER
id: BTDS-144A9022820250716
isin: US501797AW48
price: 102.073
quantity: 50000
side: SELL
spread: null
timestamp: '2025-07-16T12:07:13-04:00'
ytm: null
ytw: 5.902
TransactionsPage:
type: object
description: A paginated list of transactions.
properties:
data:
type: array
items:
$ref: '#/components/schemas/Transaction'
description: List of transactions in this page.
count:
type: integer
description: Always -1. Retained for wire-shape compatibility; the value is no longer computed because no known consumer reads it and producing it required an extra full-history scan per request. Iterate `next` to enumerate the result set.
next:
type:
- string
- 'null'
description: A hyperlink to the next page of results, requesting the same page size as the current request.
prev:
type:
- string
- 'null'
description: Null. Paginating in reverse is not supported.
required:
- data
- count
- next
- prev
DailySummariesPage:
type: object
description: A paginated list of daily transaction summaries.
properties:
data:
type: array
items:
$ref: '#/components/schemas/DailySummary'
description: List of daily summaries in this page.
count:
type: integer
description: Always -1. Retained for wire-shape compatibility; the value is no longer computed because no known consumer reads it.
next:
type:
- string
- 'null'
description: A hyperlink to the next page of results, requesting the same page size as the current request.
prev:
type:
- string
- 'null'
description: Null. Paginating in reverse is not supported.
required:
- data
- count
- next
- prev
securitySchemes:
ApiKeyAuth:
type: http
scheme: bearer
x-provenance:
method: searched
source: https://docs.moment.com/reference
harvested: '2026-10-14'
tool: harvest-readme-openapi.py
note: Assembled verbatim from the OpenAPI definition ReadMe embeds in each operation page of the provider's developer portal; paths and components merged by API title, nothing authored.
assembled_from:
- https://docs.moment.com/reference/getdailytransactionsummaries.md
- https://docs.moment.com/reference/gettransactions.md
merge:
pages: 2
deduped: 3
conflicts_kept_first: 0