Docs / Reference / API reference API reference The Senddy API endpoints that the SDK calls, for teams integrating over HTTP.
The SDK calls these endpoints for you. Use them directly only if you're integrating from a language without a Senddy SDK, or debugging.
Chain Base URL Base https://api.senddy.comRobinhood Chain https://api-rh.senddy.com
Every request needs an API key in X-API-Key, or a session token in Authorization: Bearer sst_…. Event streams take ?session= instead. See Authentication .
Service# Method Path What it does GET /healthLiveness GET /infoChain, pool and which features this instance runs GET /whoamiThe developer or session the credential belongs to
Sessions# Method Path What it does POST /sessionMint a short-lived session token for a user. Server only, with your API key POST /session/exchangeTurn a Privy access token into a session, for Privy apps registered with Senddy
Transactions# Proofs are made on the user's device. These endpoints verify them in a secure enclave, sign an attestation, and submit the transaction for the user, so they never need gas.
Method Path What it does POST /sequence/deposit-shieldVerify and submit a deposit, in order POST /sequence/spendVerify and submit a transfer or withdrawal POST /sequence/spend9The same, for payments that combine many notes POST /sequence/private-swapVerify and submit a private swap GET /sequence/ticket/:ticket_idStatus of a submitted transaction POST /attest/deposit-shield, /attest/spend, /attest/spend9, /attest/private-swapAttest only, without submitting POST /relaySubmit an attested transaction
Swaps# Method Path What it does POST /swap/quoteRoute, expected output, floor and fees for a private swap
Bridging# Method Path What it does POST /bridge/hyperliquid/in-addressA deposit address for funds coming from Hyperliquid POST /bridge/hyperliquid/out-addressA deposit address for a withdrawal to Hyperliquid POST /bridge/solana/deposit-addressA deposit address for funds coming from Solana GET /bridge/statusProgress of a bridge request
Data# Method Path What it does GET /merkle/rootThe pool's current Merkle root GET /merkle/treeMerkle data the client needs to prove GET /events/streamServer-sent events for new pool activity GET /balance/usdcPublic balance of an address, for deposit screens
Errors# Errors return JSON with a machine-readable code. The ones to handle:
Code Meaning What to do SESSION_EXPIREDThe session token has expired Mint a new one. The SDK does this for you ROUTE_UNAVAILABLENo swap route right now Ask the user to try again SWAPS_DISABLEDSwaps are off on this instance Hide swaps 429Rate limited Back off and retry
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