# Orb MCP by usefulapi (io.usefulapi/orb): tool descriptions scored

- tools/list taken: 2026-11-02 (UTC)
- From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/io.usefulapi%2Forb/versions/latest)
- Connected to: https://orb.usefulapi.io/mcp
- Homepage: https://usefulapi.io/orb/
- Repository: https://github.com/m190/usefulapi-mcp
- Scoring rules: v2
- Tools: 26
- Average: 41.0 / 100 (Cloudy)
- Near-identical pairs: 19

This page shows how Orb MCP by usefulapi (io.usefulapi/orb)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

## Across the server

- Minor: 26 tools. Above 25, models start to tell tools apart less well.
- Minor: 19 pairs with nearly the same description in all; the top 12 are shown.

## Tools

- `orb_list_coupons`: 35 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: The meaning of the boolean argument show_archived is unclear.
  - Minor: Says nothing about what it returns.
- `orb_list_customers`: 35 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `orb_list_items`: 35 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `orb_list_prices`: 35 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `orb_list_plans`: 37 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `orb_get_invoice`: 38 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: invoice_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: invoice_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_item`: 38 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: item_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: item_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_plan`: 38 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: plan_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: plan_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_price`: 38 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: price_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: price_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_subscription`: 38 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: subscription_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: subscription_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_upcoming_invoice`: 39 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: subscription_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: subscription_id. Name the tool or the place that returns it, or models look it up first.
- `orb_list_alerts`: 39 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `orb_list_metrics`: 39 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `orb_list_subscriptions`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `orb_update_customer`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: name, external_customer_id, timezone.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: customer_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_customer`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: customer_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: customer_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_customer_by_external_id`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: external_customer_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_subscription_schedule`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: subscription_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: subscription_id. Name the tool or the place that returns it, or models look it up first.
- `orb_list_invoices`: 44 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: due_date.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `orb_get_customer_credits`: 45 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: customer_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: customer_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_customer_costs`: 46 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: customer_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: customer_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_subscription_costs`: 46 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: subscription_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: subscription_id. Name the tool or the place that returns it, or models look it up first.
- `orb_get_subscription_usage`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: subscription_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: subscription_id. Name the tool or the place that returns it, or models look it up first.
- `orb_ping`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
- `orb_create_customer`: 50 / 100
  - Minor: Says nothing about what it returns.
- `orb_get_customer_credits_ledger`: 50 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: customer_id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: customer_id. Name the tool or the place that returns it, or models look it up first.

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