Autumn MCP by usefulapi

by usefulapi.io · remote · no sign-in to list tools · v1.16.3 · published by io.usefulapi

MCP server for Autumn — read customers, plans, balances & invoices; track usage and attach plans.

Deletes · 6Changes · 1

Compare Registry entry

18 tools: 6 can delete or cancel things, 1 change things and 11 only read.

Scanned Oct 21, 2026

Deletes or cancels6Claude Code: deny: see these tools
Can't be undone0Claude Code: ask
Changes things1Claude Code: ask: see these tools
Only reads11Claude Code: allow: see these tools

2 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

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

Findings

Matches of fixed checks, with the text they matched.

2 warn

Warnautumn_request
The server marks "autumn_request" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true}; The name "autumn_request" says "request": a word for a change.
What this check looks for
Warnget_or_create_customer
The server marks "get_or_create_customer" destructive (destructiveHint: true), and its name says "get", a word for reading.
Matched text
annotations: {"destructiveHint":true}; The name "get_or_create_customer" says "get": a word for reading.
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

18 tools

Deletes or cancels 6Removes, cancels or revokes something.Claude Code: deny

attach_planMUTATES Autumn billing data — attaches (subscribes) a plan to a customer; may create an invoice / return a payment URL.No findings
Why it is in this group
- The name "attach_plan" says "attach": a word for a change.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it
MUTATES Autumn billing data — attaches (subscribes) a plan to a customer; may create an invoice / return a payment URL. Autumn API: POST /v1/billing.attach. Returns { customer_id, invoice, payment_url, required_action }.
Annotations the server declares
- title: Attach a plan
- destructiveHint: true
create_entityMUTATES Autumn billing data — creates an entity (e.g.No findings
Why it is in this group
- The name "create_entity" says "create": a word for a change.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it
MUTATES Autumn billing data — creates an entity (e.g. a seat) under a customer, tied to a feature. Autumn API: POST /v1/entities.create.
Annotations the server declares
- title: Create an entity
- destructiveHint: true
get_or_create_customerMUTATES Autumn billing data — fetches a customer by id, creating them if they do not exist.1 finding
Why it is in this group
- The name "get_or_create_customer" says "get": a word for reading.
- The server marks it destructive (destructiveHint: true).
Findings
- Warn
  The server marks "get_or_create_customer" destructive (destructiveHint: true), and its name says "get", a word for reading.
  Matched text
  annotations: {"destructiveHint":true}; The name "get_or_create_customer" says "get": a word for reading.
  What this check looks for
Description, as the server wrote it
MUTATES Autumn billing data — fetches a customer by id, creating them if they do not exist. Autumn API: POST /v1/customers.get_or_create.
Annotations the server declares
- title: Get or create a customer
- destructiveHint: true
open_customer_portalMUTATES Autumn billing data — creates a Stripe billing-portal session for a customer to manage their subscription.No findings
Why it is in this group
- The name "open_customer_portal" says "open": a word for a change.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it
MUTATES Autumn billing data — creates a Stripe billing-portal session for a customer to manage their subscription. Autumn API: POST /v1/billing.open_customer_portal. Returns { customer_id, url }.
Annotations the server declares
- title: Open customer billing portal
- destructiveHint: true
track_usageMUTATES Autumn billing data — records a usage event (deducts/credits a feature balance).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it
MUTATES Autumn billing data — records a usage event (deducts/credits a feature balance). Provide EITHER feature_id OR event_name. Autumn API: POST /v1/balances.track.
Annotations the server declares
- title: Track usage
- destructiveHint: true
update_customerMUTATES Autumn billing data — partially updates a customer.No findings
Why it is in this group
- The name "update_customer" says "update": a word for a change.
- The server marks it destructive (destructiveHint: true).
Description, as the server wrote it
MUTATES Autumn billing data — partially updates a customer. Only provided fields change. Autumn API: POST /v1/customers.update.
Annotations the server declares
- title: Update a customer
- destructiveHint: true

Changes things 1Creates or changes something that can be changed back.Claude Code: ask

autumn_requestPower-user escape hatch: POST to any Autumn read/preview endpoint not wrapped by a dedicated tool.1 finding
Why it is in this group
- The name "autumn_request" says "request": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "autumn_request" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true}; The name "autumn_request" says "request": a word for a change.
  What this check looks for
Description, as the server wrote it
Power-user escape hatch: POST to any Autumn read/preview endpoint not wrapped by a dedicated tool. READ-ONLY — the path is validated to only allow .get / .list / .check / .preview_* actions; write actions are rejected. Autumn API: POST {path}.
Annotations the server declares
- title: Raw read request
- readOnlyHint: true

Only reads 11Looks things up and changes nothing.Claude Code: allow

checkREAD-ONLY entitlement check: does a customer have access to (or enough balance of) a feature?No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
READ-ONLY entitlement check: does a customer have access to (or enough balance of) a feature? Autumn API: POST /v1/balances.check. This tool never records usage — it does not expose send_event or lock.
Annotations the server declares
- title: Check feature access / balance
- readOnlyHint: true
get_customerFetch a single Autumn customer by id, optionally expanding related data (invoices, entities, subscriptions, balances).No findings
Why it is in this group
- The name "get_customer" says "get": a word for reading.
Description, as the server wrote it
Fetch a single Autumn customer by id, optionally expanding related data (invoices, entities, subscriptions, balances). Autumn API: POST /v1/customers.get.
Annotations the server declares
- title: Get a customer
- readOnlyHint: true
get_entityFetch a single entity (e.g.No findings
Why it is in this group
- The name "get_entity" says "get": a word for reading.
Description, as the server wrote it
Fetch a single entity (e.g. a seat) belonging to a customer. Autumn API: POST /v1/entities.get.
Annotations the server declares
- title: Get an entity
- readOnlyHint: true
get_featureFetch a single feature by id.No findings
Why it is in this group
- The name "get_feature" says "get": a word for reading.
Description, as the server wrote it
Fetch a single feature by id. Autumn API: POST /v1/features.get.
Annotations the server declares
- title: Get a feature
- readOnlyHint: true
get_planFetch a single plan by id (optionally a specific version).No findings
Why it is in this group
- The name "get_plan" says "get": a word for reading.
Description, as the server wrote it
Fetch a single plan by id (optionally a specific version). Autumn API: POST /v1/plans.get.
Annotations the server declares
- title: Get a plan
- readOnlyHint: true
list_customersList/filter customers with cursor pagination.No findings
Why it is in this group
- The name "list_customers" says "list": a word for reading.
Description, as the server wrote it
List/filter customers with cursor pagination. Autumn API: POST /v1/customers.list. Returns { list, next_cursor }.
Annotations the server declares
- title: List customers
- readOnlyHint: true
list_entitiesList a customer's entities with cursor pagination and optional filters.No findings
Why it is in this group
- The name "list_entities" says "list": a word for reading.
Description, as the server wrote it
List a customer's entities with cursor pagination and optional filters. Autumn API: POST /v1/entities.list. Returns { list, next_cursor }.
Annotations the server declares
- title: List entities
- readOnlyHint: true
list_featuresList all features in the current environment.No findings
Why it is in this group
- The name "list_features" says "list": a word for reading.
Description, as the server wrote it
List all features in the current environment. Autumn API: POST /v1/features.list. Returns { list }.
Annotations the server declares
- title: List features
- readOnlyHint: true
list_invoicesList invoices with cursor pagination and optional filters.No findings
Why it is in this group
- The name "list_invoices" says "list": a word for reading.
Description, as the server wrote it
List invoices with cursor pagination and optional filters. Autumn API: POST /v1/invoices.list. Returns { list, next_cursor }.
Annotations the server declares
- title: List invoices
- readOnlyHint: true
list_plansList all plans (products) in the current environment.No findings
Why it is in this group
- The name "list_plans" says "list": a word for reading.
Description, as the server wrote it
List all plans (products) in the current environment. Autumn API: POST /v1/plans.list. Returns { list }.
Annotations the server declares
- title: List plans
- readOnlyHint: true
preview_attachPreview the cost/effect of attaching a plan to a customer WITHOUT charging or changing anything.No findings
Why it is in this group
- The name "preview_attach" says "preview": a word for reading.
Description, as the server wrote it
Preview the cost/effect of attaching a plan to a customer WITHOUT charging or changing anything. Read-only. Autumn API: POST /v1/billing.preview_attach.
Annotations the server declares
- title: Preview attaching a plan
- readOnlyHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.16.3. Values in angle brackets are yours to fill in.

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

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__autumn__get_customer",
      "mcp__autumn__list_customers",
      "mcp__autumn__check",
      "mcp__autumn__list_invoices",
      "mcp__autumn__get_entity",
      "mcp__autumn__list_entities",
      "mcp__autumn__list_features",
      "mcp__autumn__get_feature",
      "mcp__autumn__list_plans",
      "mcp__autumn__get_plan",
      "mcp__autumn__preview_attach"
    ],
    "ask": [
      "mcp__autumn__autumn_request"
    ],
    "deny": [
      "mcp__autumn__get_or_create_customer",
      "mcp__autumn__update_customer",
      "mcp__autumn__track_usage",
      "mcp__autumn__attach_plan",
      "mcp__autumn__create_entity",
      "mcp__autumn__open_customer_portal"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as autumn. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.usefulapi/autumn/changes.xml

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7 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

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Source: MCP Registry · repository. Synced Oct 21, 2026, 19:23 UTC.

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