> ## Documentation Index
> Fetch the complete documentation index at: https://www.helius.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# getLatestCompressionSignatures
> Returns the signatures of the latest transactions that used the compression program.
## Request Parameters
Pagination cursor for navigating through large sets of Solana compression transaction signatures
Maximum number of Solana compression transaction signatures to return per request
## OpenAPI
````yaml openapi/zk-compression/getLatestCompressionSignatures.yaml POST /
openapi: 3.0.3
info:
title: Solana Compressed Asset Transaction Monitoring API
description: >
Advanced Solana indexer for monitoring recent compressed NFT and token
transactions.
This specialized API enables developers to track and analyze the latest
compression activity
on the Solana blockchain, providing visibility into real-time compressed
asset operations,
mints, transfers, and other compression-related transactions with efficient
pagination support.
license:
name: Apache-2.0
version: 0.50.0
servers:
- url: https://mainnet.helius-rpc.com
description: Mainnet RPC endpoint
- url: https://devnet.helius-rpc.com
description: Devnet RPC endpoint
security: []
paths:
/:
summary: getLatestCompressionSignatures
post:
description: >
Retrieve the most recent transaction signatures for Solana compression
operations.
This monitoring endpoint returns a paginated list of the latest
transaction signatures
involving compressed NFTs and tokens on the Solana blockchain, including
their timestamp
and slot information. Essential for tracking compressed asset activity,
market analysis,
wallet history synchronization, and auditing compression-related
transactions across the
Solana ecosystem. Supports efficient pagination for continuous
monitoring of compression activity.
operationId: getLatestCompressionSignatures
requestBody:
content:
application/json:
schema:
type: object
required:
- jsonrpc
- id
- method
- params
properties:
jsonrpc:
type: string
description: The version of the JSON-RPC protocol.
enum:
- '2.0'
default: '2.0'
id:
type: string
description: An ID to identify the request.
default: '1'
method:
type: string
description: >-
The name of the method to invoke for retrieving recent
Solana compression transaction signatures.
enum:
- getLatestCompressionSignatures
default: getLatestCompressionSignatures
params:
type: object
properties:
cursor:
type: string
nullable: true
description: >-
Pagination cursor for navigating through large sets of
Solana compression transaction signatures
limit:
allOf:
- $ref: '#/components/schemas/Limit'
nullable: true
description: >-
Maximum number of Solana compression transaction
signatures to return per request
additionalProperties: false
required: true
responses:
'200':
description: >-
Successfully retrieved latest Solana compression transaction
signatures
content:
application/json:
schema:
type: object
required:
- context
- value
properties:
context:
$ref: '#/components/schemas/Context'
value:
$ref: '#/components/schemas/PaginatedSignatureInfoList'
additionalProperties: false
'400':
description: Bad Request - Invalid request parameters or malformed request.
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
example:
jsonrpc: '2.0'
error:
code: -32602
message: Invalid params
id: '1'
'401':
description: Unauthorized - Invalid or missing API key.
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
example:
jsonrpc: '2.0'
error:
code: -32001
message: Unauthorized
id: '1'
'429':
description: Too Many Requests - Rate limit exceeded.
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
example:
jsonrpc: '2.0'
error:
code: -32005
message: Too many requests
id: '1'
'500':
description: Internal Server Error - An error occurred on the server.
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
example:
jsonrpc: '2.0'
error:
code: -32603
message: Internal error
id: '1'
'503':
description: Service Unavailable - The service is temporarily unavailable.
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
example:
jsonrpc: '2.0'
error:
code: -32002
message: Service unavailable
id: '1'
'504':
description: Gateway Timeout - The request timed out.
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
example:
jsonrpc: '2.0'
error:
code: -32003
message: Gateway timeout
id: '1'
security:
- ApiKeyQuery: []
components:
schemas:
Limit:
type: integer
format: int64
minimum: 0
description: >-
Maximum number of Solana compression transaction signatures to return in
a single request
Context:
type: object
required:
- slot
properties:
slot:
type: integer
default: 100
example: 100
description: >-
Current Solana blockchain slot for this compression signature
request
PaginatedSignatureInfoList:
type: object
required:
- items
properties:
cursor:
type: string
nullable: true
description: >-
Pagination cursor to retrieve the next set of Solana compression
transaction signatures
items:
type: array
items:
$ref: '#/components/schemas/SignatureInfo'
description: >-
Array of Solana compressed NFT and token transaction signatures with
their metadata
ErrorResponse:
type: object
properties:
jsonrpc:
type: string
description: The JSON-RPC protocol version.
enum:
- '2.0'
example: '2.0'
error:
type: object
properties:
code:
type: integer
description: The error code.
example: -32602
message:
type: string
description: The error message.
data:
type: object
description: Additional data about the error.
id:
type: string
description: Identifier matching the request.
example: '1'
SignatureInfo:
type: object
required:
- signature
- slot
- blockTime
properties:
blockTime:
$ref: '#/components/schemas/UnixTimestamp'
description: >-
Unix timestamp when this Solana compressed asset transaction was
processed
signature:
$ref: '#/components/schemas/SerializableSignature'
description: >-
Unique transaction signature for this Solana compressed asset
operation
slot:
$ref: '#/components/schemas/UnsignedInteger'
description: >-
Solana blockchain slot in which this compressed asset transaction
was included
UnixTimestamp:
type: integer
description: >-
Unix timestamp (seconds) when the Solana compressed asset transaction
was processed
default: 1714081554
example: 1714081554
SerializableSignature:
type: string
description: >-
A Solana transaction signature for a compression-related operation, used
to identify and verify transactions.
default: 5J8H5sTvEhnGcB4R8K1n7mfoiWUD9RzPVGES7e3WxC7c
example: 5J8H5sTvEhnGcB4R8K1n7mfoiWUD9RzPVGES7e3WxC7c
UnsignedInteger:
type: integer
default: 100
example: 100
description: Non-negative integer value representing a Solana blockchain slot number
securitySchemes:
ApiKeyQuery:
type: apiKey
in: query
name: api-key
description: >-
Your Helius API key. You can get one for free in the
[dashboard](https://dashboard.helius.dev/api-keys).
````