Arch Activities API

Interact with Arch objects representing financial updates

Operations 6

GET /client-api/v0/activities Get all activities accessible to the user #
GET /client-api/v0/activities/{id} Get activity by id #
PATCH /client-api/v0/activities/{id} Update activity by id #
GET /client-api/v0/activities/{id}/files Get all files for a specific activity #
POST /client-api/v0/activities/files Query activity files #
GET /client-api/v0/activities/{activityId}/files/{fileId}/download Download the file, as originally received #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/arch-activities-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

arch-activities-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: Arch Client Activities API
  version: 0.1.0
  description: '# Arch Client API Documentation


    ## Getting Started


    To get started, you need to request credentials from us at api-support@arch.co.'
servers:
- url: /
host: arch.co
tags:


# --- truncated at 32 KB (33 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/arch/refs/heads/main/openapi/arch-activities-api-openapi.yml