Every API here is available over the APIs.io API and to AI agents over MCP.
openapi: 3.2.0
info:
title: Document Extraction Year Overview API
version: 1.0.0
description: 'Email sign-up at /app/api/auth/sign-up/email requires an x-turnstile-token
header in production. Failed or unavailable bot verification returns 403
with code BOT_CHECK_REQUIRED. Social sign-up is unaffected.
Documents in. Verified data out.
The public REST API (v1) turns documents (invoices, receipts, purchase
orders, bank statements, delivery notes, or custom schemas) into
structured, verified data. Every document reaches an explicit terminal
state. Every extracted table row is accounted for. Money fields are
cross-checked (crossfooting). Bank statements are balance-checked.
Every field links back to its source in the document.
Unsupported methods on registered API paths return an empty
405 Method Not Allowed response with an Allow header listing supported
methods. HEAD is supported wherever GET is registered; OPTIONS keeps its
existing preflight behavior. Unknown paths remain 404. Maintenance and
canonical-host redirects still take precedence.'
contact:
email: support@arkrel.com
servers:
- url: https://arkrel.com
description: Production, one Worker, one domain, same origin as the site itself (no separate api.<domain> host)
security:
- ApiKeyAuth: []
tags:
- name: year-overview
paths:
/v1/year-overview:
get:
tags:
- year-overview
operationId: getYearOverview
summary: 'My year: per-account month coverage, income vs. spending, next step'
description: 'Groups this org''s `bank_statement` documents by account (as
extracted, never a stored client/firm concept, this API has no
notion of clients), and for the given calendar year reports which
months are covered vs. missing per account (reusing the same
continuity engine `POST /v1/statement-sets` uses), income vs.
spending by Schedule C category (see `GET /v1/tax-report`), how
many documents/transactions need attention, and one suggested
next step. Nothing here is persisted. Recomputed from each
document''s stored result on every call.'
parameters:
- name: year
in: query
required: false
description: Defaults to the current calendar year.
schema:
type: integer
minimum: 2000
maximum: 2100
responses:
'402':
$ref: '#/components/responses/PaymentRequired'
'200':
description: Year overview
content:
application/json:
schema:
$ref: '#/components/schemas/YearOverview'
'400':
$ref: '#/components/responses/BadRequest'
'401':
$ref: '#/components/responses/Unauthorized'
components:
schemas:
AccountOverview:
type: object
required:
- account_number
- label
- months
- months_covered
- months_expected
- document_ids
- findings
properties:
account_number:
type: string
nullable: true
description: As extracted from the statement (masked if the statement itself was masked). Never a stored client identity.
label:
type: string
description: '"Checking ending 4471", "Credit card ending 9902", or the generic "Account ending 4471" when the statement''s account_type could not be determined. Matches BalanceSheetLine''s own label for the same account, on the tax report.'
example: Checking ending 4471
months:
type: array
items:
$ref: '#/components/schemas/MonthCoverage'
months_covered:
type: integer
months_expected:
type: integer
document_ids:
type: array
items:
type: string
findings:
type: array
items:
$ref: '#/components/schemas/StatementSetFinding'
description: Reuses the same continuity engine as POST /v1/statement-sets (GAP/BREAK/OVERLAP/...).
TaxReportCategory:
type: string
enum:
- business_income
- transfer_excluded
- balance_sheet_excluded
- advertising
- car_and_truck
- commissions_and_fees
- contract_labor
- depletion
- depreciation
- employee_benefit_programs
- mortgage_interest
- pension_and_profit_sharing
- rent_or_lease_vehicles_equipment
- insurance
- interest
- legal_and_professional
- office_expense
- rent_or_lease
- repairs_and_maintenance
- supplies
- taxes_and_licenses
- travel
- meals
- utilities
- wages
- other_expenses
- personal_not_deductible
- uncategorized
- equipment_needs_review
YearOverview:
type: object
required:
- year
- accounts
- months_covered
- months_expected
- income_total
- spending_total
- spending_by_category
- needs_review_documents
- failed_documents
- processing_documents
- uncategorized_transactions
- open_items
- next_step
properties:
year:
type: integer
accounts:
type: array
items:
$ref: '#/components/schemas/AccountOverview'
months_covered:
type: integer
months_expected:
type: integer
income_total:
type: number
spending_total:
type: number
spending_by_category:
type: array
items:
$ref: '#/components/schemas/CategoryTotal'
needs_review_documents:
type: integer
failed_documents:
type: integer
processing_documents:
type: integer
uncategorized_transactions:
type: integer
open_items:
type: integer
next_step:
type: object
nullable: true
required:
- message
- action
- document_id
- account_number
- month
properties:
message:
type: string
action:
type: string
enum:
- upload
- review_document
- categorize
- none
document_id:
type: string
nullable: true
account_number:
type: string
nullable: true
description: 'Only set for action "upload": the account the missing statement belongs to, so a client can carry it into the upload flow.'
month:
type: string
nullable: true
description: 'Only set for action "upload": the missing month, "YYYY-MM".'
example:
year: 2026
accounts:
- account_number: '4471'
label: Checking ending 4471
months:
- month: 2026-01
label: Jan 2026
covered: true
document_id: doc_01HXYZ0000000000000001
- month: 2026-02
label: Feb 2026
covered: false
document_id: null
months_covered: 8
months_expected: 9
document_ids:
- doc_01HXYZ0000000000000001
findings: []
months_covered: 8
months_expected: 9
income_total: 5000
spending_total: 1200
spending_by_category:
- category: office_expense
label: Office expense
total: 300
needs_review_documents: 1
failed_documents: 0
processing_documents: 0
uncategorized_transactions: 3
open_items: 4
next_step:
message: Upload the missing statement for checking ending 4471, February 2026
action: upload
document_id: null
account_number: '4471'
month: 2026-02
CategoryTotal:
type: object
required:
- category
- label
- total
properties:
category:
$ref: '#/components/schemas/TaxReportCategory'
label:
type: string
total:
type: number
Error:
type: object
required:
- error
properties:
error:
type: object
required:
- code
- message
properties:
code:
type: string
message:
type: string
field:
type: string
StatementSetFinding:
type: object
required:
- type
- message
- document_ids
properties:
type:
type: string
enum:
- GAP
- BREAK
- OVERLAP
- POSSIBLE_DUPLICATE
- DUPLICATE_UPLOAD
- DUPLICATE_UPLOAD_CONFLICT
- UNIDENTIFIED_MEMBER
- ACCOUNT_UNPROVEN
- MIXED_ACCOUNTS
- CURRENCY_MISMATCH
- FAILED_CHECKS
- MISSING_PERIOD
- DATE_UNRESOLVED
- AMOUNT_UNRESOLVED
- RESULT_UNAVAILABLE
message:
type: string
description: Plain-language, ready to show a bookkeeper directly.
document_ids:
type: array
items:
type: string
MonthCoverage:
type: object
required:
- month
- label
- covered
- document_id
properties:
month:
type: string
description: YYYY-MM
label:
type: string
example: Jan 2026
covered:
type: boolean
document_id:
type: string
nullable: true
responses:
PaymentRequired:
description: 'This org''s current plan does not include the requested feature.
`error.code` is `TAX_REPORT_LOCKED` for the tax report, its
export, a shared tax report or export, or a 1099 entry (unlocked by an active Catch-Up purchase
for the exact tax year asked about, or a live Autopilot/Business
subscription for the current calendar year), or `EXPORT_LOCKED`
for a categorized statement-set export (unlocked by any of the
same). A purchased Catch-Up year whose 12-month access term has ended
also returns TAX_REPORT_LOCKED for My year, document reads, uploads
targeting that year, edits, categorization, rules and downloads.
Page packs and purchases of other years cannot reopen it. Raw extraction
for other years remains priced per page.
'
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
BadRequest:
description: Bad request
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
Unauthorized:
description: Missing or invalid API key
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
securitySchemes:
BusinessSession:
type: apiKey
in: cookie
name: better-auth.session_token
description: Better Auth session cookie. Mutations also require a same-origin Origin header.
EngineToken:
type: apiKey
in: header
name: X-Engine-Token
description: Shared operator token for internal maintenance.
SessionCookie:
type: apiKey
in: cookie
name: __Host-arkrel_session
description: Signed-in app session. Mutations also require a same-origin request. Sensitive actions by accounts with a password without completed protection receive 403 TWO_FACTOR_SETUP_REQUIRED as described in x-app-account-protection. The free first look and account deletion remain available.
ApiKeyAuth:
type: http
scheme: bearer
description: 'API key shown once at creation, e.g. `sk_live_...` / `sk_test_...`.
Stored server-side as a salted hash; only the prefix is retrievable
afterward.
API keys and MCP credentials are checked against their creating user on every request. If that user has a password without enabled TOTP, requests return HTTP 403 TWO_FACTOR_SETUP_REQUIRED. Organization/service keys with no creating user keep their existing behavior.
'
x-webhook-delivery-payload:
$ref: '#/components/schemas/WebhookDeliveryPayload'
x-app-email-signup:
path: /app/api/auth/sign-up/email
method: POST
header: x-turnstile-token
status: 403
code: BOT_CHECK_REQUIRED
description: A fresh single-use Turnstile token with action signup and hostname matching APP_BASE_URL is required in production. Missing, invalid, expired, or unavailable verification fails closed. Reset the widget after each submission. Google sign-up is unaffected. Local development without a configured secret does not require a challenge. This route is served by the mounted Better Auth handler.
x-app-account-protection:
status: 403
code: TWO_FACTOR_SETUP_REQUIRED
response:
$ref: '#/components/responses/TwoFactorSetupRequired'
description: 'Password accounts require verified TOTP before checkout or billing changes, reports and exports (PDF, CSV, accountant CSV, QuickBooks, Xero, OFX, JSON downloads, statement exports and data ZIP), share creation and use, API keys and MCP, bank or ledger connections, team changes, email/password changes, inbound sender allowlist changes, callback secrets, and uploads with webhook_url. Uploads that would consume paid page credits or record billable overage also return TWO_FACTOR_SETUP_REQUIRED before storage. Included monthly and purchased Catch-Up allowances remain available. Admission reserves pending pages, and settlement rechecks live protection against actual processed pages. Chart-of-accounts sync and all chart writes require protection; stored chart and categorization-settings reads do not contact a ledger provider. Session uploads with a callback return TWO_FACTOR_SETUP_REQUIRED before storing or scheduling the document when the password account needs setup. The same refusal applies when the business has an active saved outbound webhook, even if webhook_url is omitted. Queued webhook dispatch checks live creator and document-uploader protection before sending, including retries. Existing role, entitlement and step-up requirements remain. Linked passkeys or providers do not exempt password accounts. Passwordless accounts keep existing rules. Email verification remains required. Sign-up and sign-in do not redirect to setup. The free first look stays open: one statement upload or email-in, processing, merchant review, rules, My year and locked report previews, billing/pricing views, profile and business name, sign-out, and account deletion with its existing step-up. Sensitive actions prompt inline and resume after setup. Direct /protect-account links remain supported. Other app routes default to protection. Exemptions use explicit methods and complete route patterns; business settings changes other than name-only renames, session revocation, provider linking and token access require protection. Implicit same-email provider linking is disabled: sign in with the password first, protect the account and pass step-up, then link explicitly. Explicit linking and passkey registration require fresh step-up and recheck at credential creation or verification. Already-linked provider sign-in and first-time provider signup remain available. Authentication, recovery and TOTP enrollment ceremonies remain available. Credential mutation routes require protection, including passkey registration options and verification. OAuth and passkey removal also require fresh step-up (401 STEP_UP_REQUIRED). Password credential unlinking is refused with 403 PASSWORD_REMOVAL_NOT_ALLOWED even after enrollment and step-up, preserving the password account protection requirement. The server reads live enrollment. API keys and MCP credentials retain their creator check; creatorless service keys retain existing behavior. Share links created by an unprotected password account remain unavailable.'
open_workflows:
- Free first look and locked report preview
- Billing and pricing views
- Profile name and sign-out
- Account deletion with existing step-up
- Authentication and protection enrollment
session_status:
path: /app/api/auth/me
rate_limits:
window_seconds: 60
per_session: 180
per_ip: 600
status: 429
retry_header: Retry-After
description: Independent read budgets. The IP budget precedes session resolution; the session budget uses the resolved session ID before membership and protection reads. These reads do not consume credential budgets.
field: two_factor_setup_required
schema:
type: boolean
description: Present on authenticated responses. True means sensitive actions require enrollment; it does not block the free first look or redirect sign-in. Absent when user is null.
x-app-account-deletion:
description: An account deletion intent (pending, processing, or failed) ends access immediately, including while financial obligations delay purge. All user sessions are revoked atomically with the intent, along with user-created API keys, share links, invitations, webhooks and inbound email addresses across every business. Better Auth lookups hide retained identities and their credentials. Validation, reset, verification and challenge errors follow the native unknown-user or unknown-token behavior, including validation order and password work. Anonymous sign-up uses the generic duplicate response without sending mail or creating credentials. OAuth cannot recreate a reserved identity. Credential inserts, updates and deletes are fenced against deletion at SQL execution time. Old session and two-factor challenge cookies are ignored on the request. Deletion never sends cookie expirations, so delayed responses cannot erase another login. Auth revocation expires sessions that anchor Plaid compensation operations and retains their rows until those operations are removed by their own lifecycle. Step-up and invite acceptance return the existing unauthenticated HTTP 401 response. Removed magic-link endpoints remain HTTP 404 for everyone. The email is reserved until purge completes. Business-only deletion retains the login and other businesses, but hides and blocks the deleting business immediately, including while billing leases drain. API keys for deleting businesses return unauthenticated HTTP 401.
x-app-step-up:
window_seconds: 600
description: 'Sensitive app actions require fresh identity verification. GET /app/api/auth/step-up returns password, code, email, passkey, google, microsoft and fresh booleans. POST /app/api/auth/step-up accepts exactly one of password, code (TOTP/backup), or emailCode. POST /app/api/auth/step-up/email sends a six-digit code to the verified email of a passwordless account, at most three times per ten minutes per user. Codes are hashed, single-use, expire after ten minutes, permit five attempts, and are bound to the initiating live session, user, email and step-up purpose. Resending invalidates the previous code. Verification is rate-limited. Passkey ceremonies require x-arkrel-step-up: 1 on both challenge issuance and verification, biometric/PIN user verification, and a server-side purpose, user and session binding that expires after five minutes. Consumption requires the exact initiating live session. Provider users call sign-in/social with a linked google provider and additionalData.stepUp=true. The server rejects idToken shortcuts and binds OAuth state to the original user/session for five minutes. Google cannot force reauthentication and is opportunistic only. It requires a back-channel auth_time between initiation and completion; token issuance time never counts. Missing, stale or future auth_time is rejected. Passwordless users can use an email code or a registered passkey when Google cannot verify freshness. Successful passkey/provider verification rotates and elevates only the returning bound session. Password, TOTP and email checks elevate the initiating session. These app-only auth surfaces are not exposed by integrations or MCP.'
x-consumer-statement-admission:
description: App uploads and inbound email share one Free statement allowance per account. Additional app uploads return 402 FREE_STATEMENT_USED. Inbound attachments wait for an upgrade. Retries recover the original admitted attachment. Developer API per-page pricing is unchanged.
x-maintenance-bridge:
description: 'During the production cutover, an isolated maintenance Worker returns HTTP 503 for every method and path, including reads and health checks, with Retry-After: 60 and Cache-Control: no-store. API, MCP, internal, and webhook paths return error.code MAINTENANCE and error.message "Arkrel is updating. Please try again in a few minutes." MCP receives this plain JSON error instead of JSON-RPC while the bridge is deployed. Other paths return HTML. HEAD returns headers without a body. Retry after the indicated delay.'
x-maintenance-mode:
description: 'MAINTENANCE_MODE=1 freezes mutations across app, REST, MCP and engine routes. Mutations and OAuth or verification callbacks return 503 with Retry-After: 60. REST errors use code MAINTENANCE_MODE. MCP tool mutations use JSON-RPC code -32004. Reads, health and status remain available. Read-time refresh, audit, counters and automatic categorization are suspended. Cron writes are skipped; inbound email invocations fail before ingestion so delivery can be retried.'
x-stripe-billing-webhook:
path: /app/api/billing/webhook
authentication: Stripe-Signature
refund_events:
- charge.refunded
- refund.updated
- refund.failed
dispute_events:
- charge.dispute.created
- charge.dispute.updated
- charge.dispute.closed
description: Refund IDs and provider statuses are persisted. Catch-Up access and unused page credits are revoked only after a succeeded refund. Pending or failed refunds retain access. The dashboard refund response has refunded=false while an automatic refund is pending or failed, with auto=true indicating that the automatic request was submitted. Disputes suspend the charged subscription, Catch-Up year, or unused page credits. A won dispute restores only the saved access and original credit expiration, unless the payment was refunded or another dispute still holds it. Lost disputes remain suspended. Subscription updates cannot bypass a hold. Independent AppSumo codes are unaffected. The owner receives an operational email alert.
x-app-catchup-payment-clock:
path: /app/api/usage
field: catchup_purchases
items:
type: object
required:
- tax_year
- purchased_at
- payment_settled_at
- expires_at
properties:
tax_year:
type: integer
purchased_at:
type: string
format: date-time
description: Purchase record time. Do not use as an unresolved payment clock fallback.
expires_at:
type: string
format: date-time
description: Access and unused pages end at this instant, 12 months after settlement. Older test rows use their purchase timestamp until settlement is reconciled.
payment_settled_at:
type: string
format: date-time
nullable: true
description: Confirmed payment charge time, or null while confirmation is unresolved. The 30-day guarantee starts at this time.