scrivai 0.2.3

Configurable document generation & audit framework built on Claude Agent SDK

Scrivai

中文

Configurable document generation & audit framework built on Claude Agent SDK.

Scrivai wraps the Claude Agent SDK in a three-phase execution engine called PES (Plan→Execute→Summarize), where each phase produces file-contract outputs that the framework validates automatically. It ships three built-in agents — ExtractorPES, AuditorPES, and GeneratorPES — and includes a self-improving skill system that proposes, evaluates, and promotes better agent behaviors from trajectory feedback.

Install

pip install scrivai

Quick Start

import asyncio
from pathlib import Path
from pydantic import BaseModel
from scrivai import (
    ExtractorPES,
    ModelConfig,
    WorkspaceSpec,
    build_workspace_manager,
    load_pes_config,
)


class KeyItems(BaseModel):
    items: list[str]


async def main():
    ws_mgr = build_workspace_manager()
    ws = ws_mgr.create(WorkspaceSpec(run_id="demo", project_root=Path.cwd(), force=True))
    config = load_pes_config(Path("scrivai/agents/extractor.yaml"))

    pes = ExtractorPES(
        config=config,
        model=ModelConfig(model="claude-sonnet-4-20250514"),
        workspace=ws,
        runtime_context={"output_schema": KeyItems},
    )
    run = await pes.run("Extract all key items from data/source.md")
    print(run.final_output)


asyncio.run(main())

Core Concepts

Every agent in Scrivai follows the same three-phase contract:

┌──────┐      ┌─────────┐      ┌───────────┐
│ plan │ ───▶ │ execute │ ───▶ │ summarize │
└──────┘      └─────────┘      └───────────┘
    │               │                │
    ▼               ▼                ▼
plan.json    findings/*.json    output.json

Each phase declares required_outputs in a YAML config. The framework checks those file contracts at phase exit and automatically retries up to max_retries times on failure. This makes every PES unit testable and auditable without extra instrumentation.

Key APIs

Symbol	Description
BasePES	Three-phase execution engine base class
ExtractorPES	Extract structured data from documents
AuditorPES	Audit documents against checkpoints
GeneratorPES	Generate documents from templates
ModelConfig	LLM provider configuration
load_pes_config()	Load PES config from YAML
build_workspace_manager()	Create isolated workspaces

Examples

Script	Covers	Estimated time
examples/01_audit_single_doc.py	AuditorPES checkpoint audit	~2–3 min
examples/02_generate_with_revision.py	GeneratorPES template generation	~1–2 min
examples/03_evolve_skill_workflow.py	Skill evolution end-to-end	~3–5 min

Documentation

Full API reference and guides: https://iomgaa-ycz.github.io/Scrivai/

Configuration

Required

export ANTHROPIC_API_KEY=sk-ant-...

Gateway override (optional — for private endpoints or alternative models)

export ANTHROPIC_BASE_URL=https://your-gateway.example.com
export SCRIVAI_DEFAULT_MODEL=your-model-name

These environment variables are read automatically at startup. You can also pass base_url, model, and api_key directly to ModelConfig to override them at the code level.

Contributing

See CONTRIBUTING.md for development setup, coding standards, and the pull-request workflow.

License

Apache 2.0 — see LICENSE for details.