headless-oracle 0.1.0

Python SDK for Headless Oracle V5 — signed market status receipts for AI agents

headless-oracle (Python SDK)

Prevent your trading bot from executing orders against closed, halted, or holiday-closed markets. Handles ~1,300 schedule edge cases per year across 7 global exchanges.

Built on Headless Oracle V5 — every status assertion is Ed25519-signed and expires in 60 seconds, so stale receipts never reach your execution layer.

Installation

pip install headless-oracle

With LangChain integration:

pip install "headless-oracle[langchain]"

With CrewAI integration:

pip install "headless-oracle[crewai]"

Quick start

from headless_oracle import OracleClient, verify

client = OracleClient(api_key="ok_live_...")

# Fetch a signed receipt and verify it
receipt = client.get_status("XNYS")
result = verify(receipt)

if not result.valid:
    raise RuntimeError(f"Receipt invalid: {result.reason}")

# Fail-closed: treat anything that isn't OPEN as CLOSED
if receipt["status"] != "OPEN":
    print("Market is not open — halting all execution")
else:
    print("Market is OPEN — proceed with trading logic")

Verification without a network call

For high-throughput use cases, pass the public key directly to skip the key registry fetch:

PUBLIC_KEY = "03dc27993a2c90856cdeb45e228ac065f18f69f0933c917b2336c1e75712f178"

result = verify(receipt, public_key=PUBLIC_KEY)

Batch queries

receipts = client.get_batch(["XNYS", "XNAS", "XLON"])
for r in receipts["receipts"]:
    print(r["mic"], r["status"])

Verifying receipt fields

Field	Description
receipt_id	UUID, unique per receipt
issued_at	ISO 8601 UTC timestamp
expires_at	Act before this time (60s TTL)
issuer	"headlessoracle.com" — resolve {issuer}/v5/keys to find the public key
mic	Exchange MIC code (e.g. XNYS)
status	OPEN, CLOSED, HALTED, or UNKNOWN
source	SCHEDULE, OVERRIDE, or SYSTEM
receipt_mode	demo or live
schema_version	v5.0
public_key_id	Key identifier (matches /v5/keys registry)
signature	128-char hex Ed25519 signature of canonical payload

Always treat UNKNOWN as CLOSED. It means the oracle encountered an internal error and failed safely.

Integrations

• LangChain tool
• CrewAI tool

Supported exchanges

MIC	Exchange	Timezone
XNYS	New York Stock Exchange	America/New_York
XNAS	NASDAQ	America/New_York
XLON	London Stock Exchange	Europe/London
XJPX	Japan Exchange Group	Asia/Tokyo
XPAR	Euronext Paris	Europe/Paris
XHKG	Hong Kong Exchanges	Asia/Hong_Kong
XSES	Singapore Exchange	Asia/Singapore

License

MIT