Finance & Accounting · Billsby + Claude
Billsby MCP with Claude: Automate Subscription Billing Operations
The short answer
Claude works with Billsby through the Model Context Protocol (MCP), an open standard that lets Claude securely read billing information and carry out approved actions. Once connected with a Billsby API key, Claude can look up customers, inspect subscriptions, review invoices and help update billing plans through natural language, with access limited to what the organisation allows.
What is Billsby?
Billsby is a subscription billing platform. It manages customers, subscriptions, invoices, products, plans, usage counters, add-ons and allowances. SaaS companies and other subscription businesses use it to run recurring billing without building complex billing logic from scratch. Finance operations, revenue teams and customer support staff typically work with it every day, checking account status, correcting plans and reconciling invoices.
How Claude connects to Billsby through MCP
The Model Context Protocol (MCP) is an open standard that lets Claude use other software securely. Think of it as a universal adapter between Claude and a tool like Billsby. It gives Claude a defined, controlled way to read information and take actions, with permissions the organisation sets.
Once connected, Claude can read customer records, check subscription status, review invoices and examine plan and usage details in Billsby. Where the organisation allows it, Claude can also help draft and prepare plan changes. The connection can use Billsby's direct API alongside MCP, depending on what the workflow needs.
Access is set up on a least-privilege basis, so Claude only sees and does what the API key permits. Consequential actions, such as changing a live plan or issuing a credit, can be routed for human approval before they take effect. Audit logs record what was requested and by whom, so finance leaders keep control throughout.
What you can automate
Customer account lookups for support teams
Support agents often need to know a customer's plan, renewal date and recent invoices before replying. With Claude connected to Billsby, an agent can ask in plain language and get a clear summary of the account, along with any open invoices or allowance limits. This shortens response times and reduces the need to switch between screens.
Subscription health reviews for account managers
Account managers can ask Claude to list subscriptions nearing renewal, those with usage close to allowance limits, or those with failed payments. The summary helps them prioritise outreach to customers who may need an upgrade, a plan change or a friendly reminder. The team spends less time building manual reports.
Invoice review for finance teams
Finance staff can use Claude to review invoices for a given customer or period, spot unusual add-on charges or missing usage counters, and prepare a list of items for checking. Claude prepares the review, and a finance person confirms each finding before any correction is made.
Plan change requests handled with approval
When a customer asks to move to a different plan or add an add-on, Claude can gather the current subscription details and draft the proposed change. The change goes to a named approver in the organisation before it is applied in Billsby, keeping pricing decisions under human control.
Usage and allowance monitoring
For businesses that bill on usage, Claude can review usage counters and allowances across customers and flag accounts that are running over or under their agreed limits. Operations leads receive a short weekly summary and can decide which accounts to contact first.
An end-to-end workflow: Renewal risk review and plan adjustment
TriggerEach Monday morning, a scheduled check runs for subscriptions renewing within 30 days.
Claude retrieves upcoming renewals and current plan details from Billsby using the connected API key.
Claude checks usage counters and recent failed payment records for each subscription.
Claude groups accounts into low, medium and high renewal risk and writes a short reason for each.
The summary is posted to the account management channel in Microsoft 365 Teams, with customer records linked from the CRM.
An account manager reviews the high-risk accounts and approves any suggested plan adjustments.
Approved changes are applied in Billsby and logged for the finance team.
OutcomeAccount managers start each week with a prioritised list of renewals at risk and a ready plan for each. This typically reduces surprise churn and keeps billing records accurate, with every plan change approved by a person.
How we set it up
Free automation audit
We review your current Billsby workflows, your team's pain points and the other systems you use, such as Microsoft 365, your CRM or your ERP. We identify the workflows most worth automating and agree on priorities.
Secure connection with an API key
We connect Claude to Billsby using an API key, the sign-in method Billsby supports. The key is stored securely and scoped to the minimum access each workflow needs, with direct API access used where it fits best.
Workflow design and approvals
We design the end-to-end workflow across Billsby and your other systems. Consequential actions, such as plan changes and credits, are set to require approval by named people in your organisation.
Testing on real past cases
We test the workflow against real past customer and invoice cases from your own records. We check accuracy, refine prompts and rules, and confirm that approvals and audit logs work as intended.
Launch, monitoring and team training
We launch the workflow with monitoring and audit logs in place, then train your finance, support and account teams on how to use it and how to escalate issues. We review performance with you after the first few weeks.
Who benefits
- Finance and billing leads
- Faster invoice reviews and clearer audit trails, with plan changes approved before they take effect.
- Customer support teams
- Instant account summaries in plain language, so customers get quicker and more accurate answers.
- Account managers and revenue teams
- Weekly renewal and usage summaries that show which customers to contact first.
- Operations and IT heads
- A controlled, least-privilege connection with monitoring, so new automation fits within existing security policies.
Security and control
- Access is limited to the permissions granted to the Billsby API key, following least-privilege principles.
- Consequential actions such as plan changes, credits and refunds can require approval by a named person before they are applied.
- Audit logs record requests, responses and approvals so finance teams can review what happened and why.
- Workflows are tested on real past cases before launch, and monitored afterwards to catch errors early.
- API keys are stored securely and can be rotated or revoked at any time by your administrators.
For teams in the US, UK, India and the Middle East
Organisations in the United States and the United Kingdom can choose a hosting region that suits their data and contractual requirements. Businesses in India must consider the Digital Personal Data Protection Act, 2023, when handling customer billing data. Companies in the UAE and Saudi Arabia must meet their local data protection laws, and we select the Claude hosting region to meet those requirements. We design every deployment around the rules that apply to your organisation.
Learn more about Claude and MCP
Anthropic's AI model and assistant.
Secure links between Claude and business tools.
How engineers build and change software with Claude.
Hosted agents that run multi-step work.
The open standard Claude uses to connect to tools.
Frequently asked questions
What does the Billsby MCP server do?
The Billsby MCP server gives Claude a secure, standard way to reach your Billsby account. Through it, Claude can read customer, subscription, invoice and plan information and carry out the actions you allow, such as preparing or applying approved plan changes. It acts as a controlled bridge, so Claude works within the permissions you define.
Is connecting Billsby to Claude secure?
Security depends on how the connection is set up. We use an API key, scope it to the minimum access each workflow needs, and require approval for consequential actions. Audit logs record activity, and keys can be rotated or revoked at any time. Your administrators stay in control of who and what can access the account.
What can Claude do with Billsby once connected?
Typically, Claude can look up customers, check subscription status, review invoices, examine usage counters and allowances, and help prepare updates to billing plans. The exact capabilities depend on the access your API key grants and the workflow we design with you, so we agree the scope before launch.
How long does setup take?
Timelines vary with the complexity of your workflows and the systems involved. A focused single workflow often takes a few weeks from the free automation audit to launch, including testing on real past cases and team training. We confirm a realistic timeline during the audit.
What account access is needed to connect Billsby?
You need a Billsby API key with permissions suited to the workflows you want to automate. We recommend a key scoped to only what is required, managed by your administrator. We confirm the exact access level during the audit, based on your plan and your internal security policies.