* feat(invoices): per-line percentage discount and separate fakturamarkning User request: rabatt i procent per artikelrad, and a marking field separate from Er referens. - invoice_items.discount_percent (0-100, default 0): line_total and vat_amount are stored NET of the discount. Shared exact-ore math in lib/invoices/line-amounts.ts (gross, discount, net) used by the web builder, staged-operation commit, editor preview, PDF, and Peppol. Undiscounted lines keep the legacy unrounded qty*price byte-identical. - ROT/RUT deduction computes on the discounted net line total. - invoices.invoice_marking: printed on the PDF next to the references and mapped to Peppol BT-10 BuyerReference (marking wins over your_reference; either satisfies the BT-10 requirement). - Peppol renders the discount as a BG-27 line AllowanceCharge (reason code 95, MultiplierFactorNumeric, Amount, BaseAmount). - Editor: "Lagg till rabatt" in the row menu (same reveal pattern as ROT/RUT), Markning row next to Er referens, forval chip, review dialog shows discounts and marking. - Plumbed through v1 REST projections, MCP create/get/update invoice tools, pending-operations update path, and copy-invoice (discount copied; marking deliberately not, it is recipient-specific). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01JJAt9yM7tgZ69f1XnNnq52 * fix(invoices): carry discount_percent through every deduction, credit, convert and preview path Skeptic + CI findings on the discount/marking feature, one pass: - generateRotRutLines and propose-send-lines now pass discount_percent into computeDeduction: the send/credit/cash verifikat booked 1513 on the GROSS line while deduction_total, the PDF and the Skatteverket claim carried the net, stranding the difference on 1513 and pushing 1510 negative once the customer paid. Test pins 1513=3000/1510=7000 for a 20%-discounted 10 000 kr ROT line. - preview-pdf route accepts discount_percent (net totals + net-based deduction) and invoice_marking; the editor now sends the marking, so the preview equals the invoice it becomes. - Credit notes carry discount_percent (buildCreditNoteItem, v1 credit route select+insert, MCP credit executor) and invoice_marking, so the kreditfaktura face arithmetic multiplies out and shows the Rabatt column (ML 17 kap 24 §). - Proforma->invoice convert copies discount_percent + invoice_marking: the converted invoice previously failed Peppol LINE_TOTAL_MISMATCH and lost the rebate on the next builder pass. - Editor hides the discount menu in self-billed mode (the self-billed wire shape has no discount; previewed net would book gross). - MCP staging and commitCreateInvoice reject a non-number discount_percent (a string coerced past the range check but was ignored by the totals math and still stored). - Regenerated skills/accounted-api (apiskill:check CI failure). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01JJAt9yM7tgZ69f1XnNnq52 --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Accounted MCP server
JSON-RPC 2.0 server exposing the Accounted bookkeeping engine to MCP clients (Claude Desktop, Claude Code, etc.). Endpoint: /api/extensions/ext/mcp-server/mcp. Add ?tool_namespace=accounted for the Accounted tool names. Requests without it retain the legacy Gnubok namespace. OAuth and stdio bridges live alongside the API surface: see app/api/mcp-oauth/, packages/accounted-mcp/, and the compatibility package in packages/gnubok-mcp/.
Tool authoring contract
Enforced by tests in __tests__/: these are not style preferences, they're guard rails.
additionalProperties: falseon everyinputSchema. Guarded bystrict-schemas.test.ts. Forces clear rejections on hallucinated fields instead of silent ignores.- Descriptions ≤ 280 chars. Guarded by
output-schema.test.ts. NoArgs:/Returns:/Examples:prose: those belong in JSON Schema. Use agent-native hints ("Use to…", "Call X first", "HIGH risk"). - Staged-operation envelope for write tools:
outputSchema: STAGED_OPERATION_SCHEMA(server.ts). Fields:staged, risk_level, actor, message, preview, period_status?, next?. Thestaged: trueboolean is the explicit completion signal; agents must not infer completion from prose. Do NOT introduce a parallel{ success, shouldContinue, output }envelope. period_statusthreading: any tool that ties to a fiscal-period-bound date (categorize, mark paid, create voucher, correct/reverse entry, approve supplier invoice) passesdateForPeriodChecktostagePendingOperation. Response then includesperiod_status: { period_id, status: open|locked|closed, lock_date }so widgets and agents disable writes without round-trips.- Scope mapping: every new tool needs an entry in
lib/auth/api-keys.tsTOOL_SCOPE_MAP. Missing entries default to deny. - Tests for new write tools: add staging-gate coverage to
__tests__/voucher-tools.test.ts(or a sibling) plus executor coverage tolib/pending-operations/__tests__/voucher-executors.test.tsif the tool stages a newoperation_type.
Determinism / cache stability
Tool definitions (name, description, inputSchema, outputSchema, annotations) are declared as static object literals at module load: no timestamps, no UUIDs, no Date/Math.random in the definition layer. This makes the tools/list JSON payload byte-stable across requests, which lets agent-side prompt caches stay warm. Do not introduce per-request non-determinism into the definitions block. Anything time-bound or random belongs inside execute().
For internal Anthropic API usage (the SDK is called from lib/ai/provider.ts and lib/ai/services/anthropic-family.ts; features such as extensions/general/invoice-inbox/lib/extract-invoice-fields.ts go through getAiService() in lib/ai rather than the SDK directly): annotate stable prefixes with cache_control: { type: 'ephemeral' } and log usage.cache_read_input_tokens for hit-ratio observability. The 1h TTL from the agent-native API plan (item 10) requires the direct Anthropic API; Accounted's Bedrock path defaults to a shorter TTL.
Payload-size watchdog
payload-size.bench.test.ts enforces a tools/list JSON payload ceiling. If the test fires, the right answer is rarely "raise the ceiling". Instead, trim descriptions or set specialized wide tools to catalogVisibility: 'search'. Those tools remain discoverable with full schemas through gnubok_search_tools and callable through tools/call on the wire without bloating the default catalog. Claude.ai only calls tools present in tools/list, so a tool that a user or a skill must call directly stays in the default catalog.
Where things live
server.ts: the tools array + JSON-RPC dispatchertool-result.ts:withNext(),toToolError()response helpersresources/: read-onlyAccounted://URIs, registered inresources/index.ts:company/current,period/active,recent-activity,capabilities,attention,chart-of-accounts,settings/vat-treatments,booking-templates,ledger/context,reconciliation/summarywidgets/: inline HTML widgets (receipt-matcher, vat-review, pending-operations)prompts/: slash-command-style promptsskills/: domain-knowledge skill bodies served viagnubok_load_skillpublic-tools.ts: lazy authentication (issue #1814).ANONYMOUS_METHODS(initialize, ping, tools/prompts/resources listing) and the threePUBLIC_TOOLS(gnubok_search_tools,gnubok_list_skills,gnubok_load_skill) answer without credentials, rate-limited per truncated IP; every othertools/callgets a transport-level 401 +WWW-AuthenticatefromhandleMcpRequestinserver.ts, which is the challenge clients turn into their Connect prompttasks.ts: MCP Tasks extension (io.modelcontextprotocol/tasks): durable handles for long-running tool calls, rows inmcp_tasks(service-role writes only)origin-guard.ts: Origin-header validation on the Streamable HTTP endpoint (DNS-rebinding defence required by the MCP spec)staging-pii-guard.ts: refuses a plaintext personnummer in stagedpending_operationsparams/preview, so every staging tool inherits the encrypt-at-staging ruletool-namespace.ts:?tool_namespace=accountedhandling (accounted_*aliases for the canonicalgnubok_*ids)__tests__/: strictness guards + per-tool coverage