marketspec 1.0.1

Unified instrument spec parser and venue symbol resolver for crypto markets

marketspec

Unified instrument spec parser and venue symbol resolver for crypto markets.

• Parse BTC/USDT:USDT, BTC/USD:USD-20251227, ETH-20251226-2500-C.
• Resolve symbols for Binance and Bybit.
• No runtime dependencies. Typed. MIT.

Install

pip install marketspec

Quick start

from marketspec import venue_symbol, parse, resolve_symbol

print(venue_symbol("binance", "BTC/USDT:USDT"))          # BTCUSDT
print(venue_symbol("bybit",   "BTC/USD:USD-20251227"))   # BTCUSD_20251227

s = parse("ETH-20251226-2500-C")   # -> Spec
print(resolve_symbol("binance", s))  # ETH-20251226-2500-C
print(s.unified())                   # round-trip -> "ETH-20251226-2500-C"

Grammar

• Spot: BASE/QUOTE → BTC/USDT
• Swap (linear): BASE/QUOTE:SETTLE where SETTLE == QUOTE and is a stable → BTC/USDT:USDT
• Swap (inverse): BASE/QUOTE:USD → BTC/USD:USD
• Future: append -YYYYMMDD to the swap form → BTC/USDT:USDT-20251227
• Option: BASE-YYYYMMDD-STRIKE-C|P → ETH-20251226-2500-C

Dates accept YYYYMMDD, YYYY-MM-DD, YYMMDD (assumes 20YY), or date/datetime.

API

from marketspec import parse, resolve_symbol, venue_symbol, set_stables
from marketspec.unified import override_stables  # optional scoped override
from marketspec.types import Spec

# One-call convenience
venue_symbol("binance", "BTC/USDT:USDT")  # -> "BTCUSDT"

# Stable parser + resolver
s: Spec = parse("BTC/USD:USD-20251227")
resolve_symbol("bybit", s)                # -> "BTCUSD_20251227"

# Round-trip for logs/tests
s.unified()                               # -> "BTC/USD:USD-20251227"

# Configure stables (global)
set_stables({"USDT", "USDC", "FDUSD"})

# Scoped override for tests or multi-tenant code
from marketspec.unified import override_stables
with override_stables({"USDT", "USDC"}):
    resolve_symbol("binance", parse("BTC/USDT:USDT"))

Exceptions

• Parsing errors raise ValueError.
• Resolution errors raise marketspec.registry.ResolveError (subclasses ValueError).

Supported venues

• binance
• bybit

PRs welcome for more venues.

Development

python -m venv .venv && source .venv/bin/activate  # Windows: .venv\Scriptsctivate
pip install -e . pytest ruff mypy
pytest -q
ruff check .
mypy src

License

MIT