15 twins.
One base URL.

CRM·openapi

Objects, attributes and records, with lists, notes and tasks on top.

Accounting·openapi

Vendors, bills, the approval gate and the payments that clear them.

Developer tools·octokit

Repositories, issues, pull requests and Projects v2, over REST and GraphQL.

CRM·hubspot-api-client

Contacts, companies and deals — with the search index one step behind the write.

Marketing·klaviyo-api

Profiles, lists, events, derived segments, campaign sends and Customer Hub conversations, in Klaviyo's JSON:API with its two-bucket rate limits.

Issue tracking·@linear/sdk

A GraphQL workspace: teams, workflow states, issues and their comments.

ERP·netsuite

Customers, accounts and items, with invoices, the payments that settle them, and SuiteQL.

Accounting·python-quickbooks

Customers, items and accounts, with invoices and the payments that settle them.

Email·resend

Transactional sends, broadcasts, and the delivery events that follow them.

Ecommerce·ShopifyAPI

The GraphQL Admin API with its calculated-cost bucket, its three error channels and an order stuck half-shipped.

Messaging·slack_sdk

Channels, messages, threads and reactions, with Slack's ok:false envelope and per-method rate limits.

Payments·stripe

Payment intents, charges, refunds, disputes and payouts as state machines over a real clock, with Stripe's envelope, form encoding and idempotency.

EDI

The supplier portal's Documents workspace, with a PO acknowledgment ready to send.

Accounting·xero-python

Contacts, invoices and payments in a Xero organisation, tax and all.

Support·openapi

Tickets, comments, users and search, with Zendesk's named wrappers, integer ids and all three of its error envelopes.