Interpose

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Sandbox API Access

Run code against the real API in the next thirty seconds — no sales call, no waiting on an ops admin to provision a key. Enter your email and get back a working Bearer token for the BaaS, Portfolio Management, and Post-Trade sandboxes, valid for 30 days.

One token, three pillars

The same Bearer token authenticates BaaS, Portfolio Management, and Post-Trade — no separate signup per pillar.

Sandboxed, not shared

Custodian connectivity runs in stub mode — build and test freely with no real clearing credentials or live market impact.

30-day token

Long enough to actually evaluate the API. Sign up again anytime with the same email for a fresh token.