# CL-SDK

Deterministic insurance intelligence primitives for regulated AI agents.

**[Documentation](https://cl-sdk.claritylabs.inc/docs)** | **[npm](https://www.npmjs.com/package/@claritylabs/cl-sdk)** | **[GitHub](https://github.com/claritylabs-inc/cl-sdk)**

## Installation

```bash
npm install @claritylabs/cl-sdk pdf-lib zod
```

## What It Does

- **Document Extraction** — Source-tree extraction that turns parser-provided PDF spans into a canonical hierarchy of document, page group, form, endorsement, section, schedule, clause, table, row, cell, and text nodes. Operational policy facts are source-backed projections from that tree, not the canonical source of truth.
- **Source Grounding** — Shared source spans, source nodes, hierarchical table row/cell evidence, source stores, quoted evidence validation, and deterministic evidence ordering across extraction, query, application, PCE, and case workflows.
- **Query Agent** — Citation-backed question answering over stored source nodes, exact source spans, and inbound photos/PDFs/text with sub-question decomposition, bounded retrieval planning, attachment-only reasoning when retrieval is unnecessary, and grounding verification.
- **Application Processing** — Bounded workflows handle intake with deterministic planning — field extraction, prior-answer backfill, context auto-fill, document lookup gating, topic-based question batching, reply parsing, source-backed field provenance, and PDF mapping
- **Policy Change Endorsements** — PCE intake, evidence collection, missing-info handling, quality gates, execution mode selection, and reviewable submission packets
- **Case Workflows** — Shared primitives for evidence-backed proposals, missing information, validation issues, stable IDs, and packet artifacts
- **Agent System** — Composable prompt modules for building insurance-aware agents across email, chat, SMS, Slack, and Discord with human-reviewable behavior
- **Storage** — DocumentStore, MemoryStore, SourceStore, and ApplicationStore interfaces with reference implementations where appropriate

## Quick Start

```typescript
import { createExtractor } from "@claritylabs/cl-sdk";

const extractor = createExtractor({
  generateText: async ({ prompt, system, maxTokens, taskKind, budgetDiagnostics, providerOptions }) => {
    const result = await yourProvider.generate({ prompt, system, maxTokens, taskKind, budgetDiagnostics, providerOptions });
    return { text: result.text, usage: result.usage };
  },
  generateObject: async ({ prompt, system, schema, maxTokens, taskKind, budgetDiagnostics, providerOptions }) => {
    // Pass providerOptions.pdfBase64 and/or providerOptions.images to your model
    const result = await yourProvider.generateStructured({ prompt, system, schema, maxTokens, taskKind, budgetDiagnostics, providerOptions });
    return { object: result.object, usage: result.usage };
  },
  concurrency: 3,
  pageMapConcurrency: 3,
  extractorConcurrency: 4,
  formatConcurrency: 2,
  reviewMode: "auto",
});

const result = await extractor.extract(pdfBase64);
console.log(result.sourceTree);          // DocumentSourceNode[] canonical hierarchy
console.log(result.sourceSpans);         // SourceSpan[] smallest PDF evidence units
console.log(result.operationalProfile);  // Source-backed facts for policy lists, COIs, compliance
console.log(result.document);            // Compatibility InsuranceDocument projection
console.log(result.chunks);              // [] on v3 source-tree extraction paths
```

### Optional Docling input

If your host pre-processes a PDF with [Docling](https://github.com/docling-project/docling), pass the serialized `DoclingDocument` JSON instead of a PDF. CL-SDK does not install or run Python Docling; it consumes the parsed document, builds source spans, constructs the same source tree, and projects operational facts from cited nodes. Docling tables are represented as table, row, and cell source spans; row spans are treated as the canonical evidence for extracted table facts.

```typescript
const result = await extractor.extract({
  kind: "docling_document",
  document: doclingDocumentJson,
  sourceKind: "policy_pdf",
}, "policy-123");
```

## Source Grounding

Source spans are the smallest evidence layer. Build spans from PDF text, OCR, emails, attachments, or structured fields, then pass them into extraction and downstream workflows. The v3 extractor builds `DocumentSourceNode` hierarchy from those spans and returns an `operationalProfile` for product-critical facts:

```typescript
import { buildPageSourceSpans, MemorySourceStore, createExtractor } from "@claritylabs/cl-sdk";

const pageOneText = "..."; // text from your PDF text/OCR pipeline
const sourceSpans = buildPageSourceSpans([
  { documentId: "policy-123", sourceKind: "policy_pdf", pageNumber: 1, text: pageOneText },
]);

const sourceStore = new MemorySourceStore();
const extractor = createExtractor({ generateText, generateObject, sourceStore });

const result = await extractor.extract(pdfBase64, "policy-123", { sourceSpans });
```

When source spans are available, extraction returns `sourceTree`, `sourceSpans`, `operationalProfile`, `warnings`, `tokenUsage`, and `performanceReport`. The source tree is canonical for policy wording and hierarchy. The operational profile contains policy metadata, parties, coverage lines, limits, deductibles, premiums, key dates, and endorsement-support facts, each with `sourceNodeIds` and `sourceSpanIds`.

Store `result.sourceTree` in a retrievable node index and embed node `description` values for search. Keep `result.sourceSpans` as the exact PDF highlighting layer. `result.document` and its `documentOutline` remain compatibility projections for existing host screens; do not treat broad structured policy JSON as canonical extraction truth.

See the [full documentation](https://cl-sdk.claritylabs.inc/docs) for architecture, provider setup, API reference, and more.

## Multimodal Querying

`createQueryAgent()` now accepts user-supplied attachments on each query. This is meant for flows like:

- an SMS user texting a photo of apartment damage
- a broker or insured emailing a COI or other PDF for context
- a caller pasting text from an email thread alongside a question

```typescript
import { createQueryAgent } from "@claritylabs/cl-sdk";

const agent = createQueryAgent({
  generateText,
  generateObject,
  documentStore,
  memoryStore,
  sourceRetriever,
});

const result = await agent.query({
  question: "What details do we still need, and does this relate to the stored policy?",
  conversationId: "conv-123",
  attachments: [
    {
      kind: "image",
      name: "damage.jpg",
      mimeType: "image/jpeg",
      base64: damagePhotoBase64,
    },
    {
      kind: "pdf",
      name: "coi.pdf",
      mimeType: "application/pdf",
      base64: coiPdfBase64,
    },
  ],
});
```

The query workflow first interprets each attachment into structured evidence, then uses the query classifier to decide whether stored-document retrieval is needed. Simple or attachment-only questions can skip retrieval and reason over the available evidence directly; document-backed questions still retrieve chunks, reason over citations, and run grounding verification. Verification can request targeted retry retrieval for weak sub-answers.

Important: your `generateObject` callback must actually forward multimodal payloads from `providerOptions` to the model request:

- `providerOptions.attachments` for generic image/pdf/text inputs
- `providerOptions.pdfBase64` for PDF inputs
- `providerOptions.images` for image inputs
- `providerOptions.doclingText` for host-provided Docling document inputs
- `providerOptions.sourceSpans` and `providerOptions.sourceChunks` for source evidence when your host passes them through

If your callback ignores those fields, the model will only see the text prompt.

## Model routing metadata

Every SDK model callback may receive `taskKind`, `budgetDiagnostics`, and `trace`. Hosts can use these provider-agnostic fields for cheap-first routing, fallback, and telemetry without the SDK hardcoding model names. Example task kinds include `extraction_classify`, `extraction_focused`, `extraction_review`, `query_reason`, `application_extract_fields`, and `pce_impact_analysis`. `budgetDiagnostics` includes the resolved output-token cap, the lower preferred task budget, and truncation-risk warnings for the current subtask. When model capabilities include `maxOutputTokens`, the SDK uses that model maximum as the request cap instead of treating low task preferences as hard limits. `trace` identifies the current extractor, page range, format batch, or source-backed call so host logs can show what was being generated instead of a generic model-call label.

## Bounded Agentic Workflows

CL-SDK uses deterministic scaffolding with agentic decision points rather than fixed all-tools-all-the-time chains:

- Extraction page mapping and review choose focused follow-up extractors from the live extractor catalog. Definitions and covered reasons can fall back through section extraction when a focused run returns no usable records.
- Supplementary extraction runs only when page assignments, form inventory, existing extracted text, or review follow-up tasks indicate regulatory, claims, notice, cancellation, or contact facts are likely present.
- Referential coverage resolution tries cheap local section/form matches first, then uses bounded target-specific actions for declarations, schedules, sections, page-location lookup, or skip.
- Page mapping, focused extractors, referential lookup, and formatting use separate concurrency controls. Page-scoped PDF and image ranges are cached so overlapping extractor tasks do not repeatedly slice or render the same pages.
- Formatting skips the LLM cleanup pass for plain prose and formats long or noisy markdown/table/list content in parallel batches.
- `reviewMode: "auto"` skips the expensive LLM review pass when deterministic checks are clean and source spans are available. Use `"always"` for maximum review coverage or `"skip"` when the host owns quality review separately.
- Application processing plans optional backfill, context auto-fill, document search, batching, reply parsing, lookup, explanations, and next-batch email generation based on current state.

These gates reduce unnecessary provider calls while preserving reliability for edge cases where additional focused extraction or retrieval is needed.

## Development

```bash
npm install
npm run build      # ESM + CJS + types via tsup
npm run dev        # Watch mode
npm run typecheck  # tsc --noEmit
npm test           # vitest
```

Zero framework dependencies. Peer deps: `pdf-lib`, `zod`. Optional: `better-sqlite3`.

## License

Apache-2.0
