Orb MCP server

Read Orb customers, subscriptions, invoices, usage and costs; create or update customers. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.

Connect OrbFree 50 tool calls / monthPro $9/mo · $90/yr · pricing30 tools

What can I ask?

Turn on the Orb connector, then ask in plain words. The AI picks the tools.

What you can do with Orb in Claude and ChatGPT

For billing and finance teams who run usage-based billing in Orb.

Check the metered usage of a subscription

The AI reads the metered usage of a subscription over a timeframe you give, plus the subscription itself. You see how much a customer used.

Find unpaid invoices and their customers

The AI lists invoices filtered by customer, subscription or status and reads one invoice. You see which customers still owe.

Preview the next invoice of a subscription

The AI fetches the upcoming draft invoice for a subscription, so you can check the amounts before it is issued.

See the costs of a customer or subscription

The AI reads the costs a customer or a subscription incurred over a timeframe and compares them.

Check a customer's credit balance and ledger

The AI reads a customer's credit balances by currency and the credit ledger, so you can see how credits were added and used.

Create a customer or update their details

The AI finds a customer by id or external id, creates a new one with name and email, or changes details of an existing one.

Changes data

How do I connect Orb?

Before you connect

The login page asks for your Orb API key.

Find it in the Orb web app → Settings → Developers → API keys. Your key is used only to call the API on your behalf and to derive a private account id; it is never shown to anyone.

Claude claude.ai · Desktop

  1. Open Customize → Connectors, then click + Add → Add custom connector.
  2. Enter the name Orb and this URL, then click Add:
    https://orb.usefulapi.io/mcp
  3. Claude opens the login page: enter your Orb API key.
  4. In a chat, click + → Connectors and turn on Orb.

Team and Enterprise: an Owner adds the connector for the organization first.

ChatGPT chatgpt.com

  1. Open Plugins, click +, then Add custom MCP server.
  2. Enter the name Orb and this URL, choose OAuth as the authentication, confirm the warning and create it:
    https://orb.usefulapi.io/mcp
  3. ChatGPT opens the login page: enter your Orb API key.
  4. In Plugins, install Orb, then choose it in a chat.

No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.

Claude Code

Run this command, then run /mcp in Claude Code to log in:

claude mcp add --transport http orb https://orb.usefulapi.io/mcp

Cursor

Add to Cursor or add this to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "orb": {
      "url": "https://orb.usefulapi.io/mcp"
    }
  }
}

VS Code

Add to VS Code or add this to .vscode/mcp.json:

{
  "servers": {
    "orb": {
      "type": "http",
      "url": "https://orb.usefulapi.io/mcp"
    }
  }
}

Codex

Run these commands. The second one opens the login page:

codex mcp add orb --url https://orb.usefulapi.io/mcp
codex mcp login orb

Other clients

Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.

https://orb.usefulapi.io/mcp

Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Orb API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Pro$9/mo · $90/yr10,000 tool calls / month
Pro+$39/mo · $390/yr100,000 tool calls / month

Each paid plan covers this Orb server only. Ask your AI to run orb_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with orb_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with orb_upgrade before then undoes the cancel. Or write to [email protected].

Tools 30

Show all 30 tools (the AI picks them for you)

Read only · 24

  • Ping / auth checkorb_ping
    Health and auth check — verifies the API key works.
  • List customersorb_list_customers
    List customers in the Orb account.
  • Get customerorb_get_customer
    Fetch a single customer by Orb customer id.
  • Get customer by external idorb_get_customer_by_external_id
    Fetch a single customer by your external customer id.
  • Get customer costsorb_get_customer_costs
    Get costs incurred by a customer over a timeframe.
  • Get customer credit balancesorb_get_customer_credits
    Get a customer's credit balances by currency.
  • Get customer credit ledgerorb_get_customer_credits_ledger
    Get the append-only credit ledger for a customer.
  • List plansorb_list_plans
    List plans configured in the Orb account.
  • Get planorb_get_plan
    Fetch a single plan by id.
  • List subscriptionsorb_list_subscriptions
    List subscriptions, optionally filtered by customer or status.
  • Get subscriptionorb_get_subscription
    Fetch a single subscription by id.
  • Get subscription costsorb_get_subscription_costs
    Get costs for a subscription over a timeframe.
  • Get subscription usageorb_get_subscription_usage
    Get metered usage for a subscription over a timeframe.
  • Get subscription scheduleorb_get_subscription_schedule
    Get the plan-change schedule for a subscription.
  • List invoicesorb_list_invoices
    List invoices, optionally filtered by customer, subscription, or status.
  • Get invoiceorb_get_invoice
    Fetch a single invoice by id.
  • Get upcoming invoiceorb_get_upcoming_invoice
    Preview the upcoming (draft) invoice for a subscription.
  • List itemsorb_list_items
    List items (the things you bill for).
  • Get itemorb_get_item
    Fetch a single item by id.
  • List pricesorb_list_prices
    List prices configured in the Orb account.
  • Get priceorb_get_price
    Fetch a single price by id.
  • List billable metricsorb_list_metrics
    List billable metrics configured in the Orb account.
  • List couponsorb_list_coupons
    List coupons in the Orb account.
  • List alertsorb_list_alerts
    List usage/spend alerts, optionally filtered by customer or subscription.

Changes data · 2

  • Create customerorb_create_customer
    Creates a new customer in Orb (additive). Requires name and a valid email.
  • Update customerorb_update_customer
    Updates an existing customer's details (reversible). Only provided fields are changed.

Your usefulapi plan · 4

  • Usage status (free-tier meter)orb_usage_status
    Report the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter.
  • Request a missing featureorb_request_feature
    Tell usefulapi that the user needs something the Orb tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter.
  • Upgrade to Pro or Pro+orb_upgrade
    Get a paid plan for Orb (the free tier caps monthly usage). Pro: 10,000 tool calls a month, for normal use — plan "monthly" ($9/month) or "yearly" ($90/year, 2 months free). Pro+: 100,000 tool calls a month, for automations and heavy use — plan "plus" ($39/month) or "plus_yearly" ($390/year). Without a plan it returns both Pro and Pro+, each with a payment link, for the user to choose; with a plan, one link. An existing Pro subscription changes to Pro+ in place (needs confirm: true; the price difference for the rest of the period is charged at once). Cancel any time: the plan then runs to the end of the paid period, so it also suits a one-time job. A link opens Stripe Checkout in the browser; after payment the account upgrades automatically. Does not count against the meter.
  • Cancel the Pro subscriptionorb_cancel_subscription
    Cancel the caller's Orb Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run orb_upgrade later to undo the cancel before the period ends. Does not count against the meter.

FAQ

What can I do with Orb in Claude or ChatGPT?

Check the metered usage of a subscription. Find unpaid invoices and their customers. Preview the next invoice of a subscription. See the costs of a customer or subscription. Check a customer's credit balance and ledger. Create a customer or update their details. See what you can do for the details.

Is this an official Orb product?

No. usefulapi is an independent service. It is not affiliated with or endorsed by Orb. The server calls the Orb API with your own Orb access, so it sees only the data that your account can see.

Can I connect Orb to Claude or ChatGPT?

Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.

What do I need to connect?

The login page asks for your Orb API key. See Before you connect for where to find it.

Do I put my Orb key or an Authorization header in the client config?

No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Orb API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.

How do you keep my Orb credentials?

The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Orb API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Orb.

Can the AI change my Orb data?

Yes, if you approve it. 2 of the 26 Orb tools can create or change data. The other 24 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.

What does it cost?

The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Orb server only. Cancel any time: your paid plan then runs to the end of the paid period. Run orb_usage_status to see how many calls you used.

How do I subscribe or cancel?

Ask the AI to run orb_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run orb_cancel_subscription. Your paid plan continues to the end of the paid period.

What if a Orb tool that I need is missing?

Tell the AI what you wanted to do. It can send the request with orb_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.

Which AI clients can I use?

Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.

This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.

Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.

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