CLOB Read (Public)
Get Tick Size
Polymarket-compat GET /tick-size/{token_id}.
Resolution order (freshest source wins):
- Grow (0.001 → 0.01): previously-valid 0.001-step
quotes are no longer multiples of the new tick. PM rejects
with
INVALID_ORDER_MIN_TICK_SIZE. This is the case where missing the change silently breaks the bot. - Shrink (0.01 → 0.001): 0.01-step quotes are still valid multiples of 0.001, so orders aren’t rejected — but the bot is leaving precision on the table and quoting less competitively than the rest of the book. SDK porters reading PM docs expect tick refresh in both directions.
On transient upstream failure (DB/Redis unavailable) the handler
returns 503 with Retry-After: 2, NOT a silent default tick.
GET
Get Tick Size
Get Tick Size