基于 SEC 申报文件构建尽职调查 Agent（10-K、10-Q、8-K、财报）

question + ticker
       │
       ├─ /api/company/facts (2 credits)
       │  ↳ confirm ticker, get CIK and sector
       │
       ├─ /api/search/sec (120 credits)
       │  ↳ semantic search across 10-K/10-Q/8-K/earnings/equity stats
       │
       ├─ /api/extract (2 credits per URL)
       │  ↳ pull full text of the top 3-5 most relevant filings
       │
       └─ Claude / GPT-4 with citation-required prompt
          ↳ "answer + [Form, Fiscal Period, Section]"

You are a financial research assistant for an investment team. You answer
questions about US public companies using SEC filings, earnings call
transcripts, and equity statistics retrieved by your tools.

Rules — non-negotiable:

1. Cite every numeric claim with: [Form, Fiscal Period, Section]. Example:
   "Operating income rose 12% YoY to $4.1B [10-K FY2025, Item 7 MD&A]."

2. Quote numbers verbatim. Do not round, paraphrase, or convert. If a
   filing says "$4,127M", do not say "$4.1B" unless the filing itself does.

3. If the answer requires content you have not extracted, say so:
   "I could not retrieve the FY2024 10-K for the segment-level breakdown.
   Please re-run with that filing in scope."

4. Do not infer from training-data knowledge. If your tools didn't return
   it, you don't know it.

5. Default to the most recent fiscal period available. State the period
   you used.

6. Format multi-figure answers as a small markdown table with one column
   per fiscal period. Always end with a one-line "How I read this" summary.

Tone: precise, terse, no marketing language.

from anthropic import Anthropic
import requests

KEY = "pk_yourkey"
client = Anthropic()

def fetch_tool(path: str) -> dict:
    return requests.get(f"https://www.apipick.com{path}/tool-schema").json()["claude"]

TOOLS = [
    fetch_tool("/api/search/sec"),
    fetch_tool("/api/extract"),
    fetch_tool("/api/company/facts"),
]

def call_tool(block):
    name_to_path = {
        "sec_search": "/api/search/sec",
        "extract_urls": "/api/extract",
        "company_facts": "/api/company/facts",
    }
    path = name_to_path[block.name]
    method = "GET" if block.name == "company_facts" else "POST"
    if method == "GET":
        resp = requests.get(
            f"https://www.apipick.com{path}",
            params=block.input,
            headers={"x-api-key": KEY},
            timeout=30,
        )
    else:
        resp = requests.post(
            f"https://www.apipick.com{path}",
            json=block.input,
            headers={"x-api-key": KEY},
            timeout=30,
        )
    return {
        "type": "tool_result",
        "tool_use_id": block.id,
        "content": resp.text,
        "is_error": resp.status_code != 200,
    }

def due_dil(question: str) -> str:
    messages = [{"role": "user", "content": question}]
    while True:
        r = client.messages.create(
            model="claude-sonnet-4-6",
            max_tokens=2048,
            system=SYSTEM_PROMPT,  # the one above
            tools=TOOLS,
            messages=messages,
        )
        messages.append({"role": "assistant", "content": r.content})
        if r.stop_reason == "end_turn":
            return "\n".join(b.text for b in r.content if b.type == "text")
        if r.stop_reason == "tool_use":
            results = [call_tool(b) for b in r.content if b.type == "tool_use"]
            messages.append({"role": "user", "content": results})

print(due_dil("Compare Snowflake's product revenue YoY for the last 4 quarters."))