API ReferenceMarket Data
On-chain flows & liquidations
/api/v3/crypto/onchain/flows- Plan
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crypto_onchain_ flows
Call this for the numbers that cannot be spun — stablecoin issuance and lending liquidations read straight off the chain. SCOPE: Ethereum mainnet only (USDC and USDT mint/burn logs, the Aave v3 pool; scope in the payload). Net Ethereum-mainnet USDC+USDT issuance is a PARTIAL read of stablecoin dry powder: most USDT circulates on Tron and much USDC on Solana and Base, none of which is read here. Liquidation counts are a deleveraging/stress read. Both come from raw logs, so a headline claiming a whale moved money can be checked against the transfer itself. HONESTY RULE: net supply is WITHHELD (null, net_status='partial') unless every leg answered — a failed mint query beside a successful burn query would otherwise report a large FALSE contraction, i.e. a fake risk-off. Zero liquidations is reported alongside a live pool-log count so a calm market is distinguishable from a dead feed. DATA context, not a score. Auth: X-API-Key.
Parameters
Query
hoursintegerOptionalLook-back window.
241 to 72asset_classstringOptionalThis route is crypto-native. asset_class=crypto is accepted.
cryptocryptoResponse
A 200 is a JSON envelope: ok: true and this endpoint's own fields (see Crypto). It carries X-Request-ID, the credit headers (X-Credits-Cost, X-Credits-Remaining, X-Credits-Receipt, X-Credits-Settlement) and the rate-limit headers.
A 200 is billed even when it holds no data (an empty list, null, found: false), so check those fields. Pricing & credits explains the credit headers.
Errors
No error is billed. The body is { "ok": false, "error", "detail", "request_; read the code from error.
| Error | Meaning |
|---|---|
400 invalid_ticker | The request is malformed, for example a ticker that is not a symbol: invalid_ticker, refused before any credit is reserved, with param naming the parameter. Not billed. |
401 unauthorized | Missing or invalid API key. |
402 plan_required | Your plan does not include this tool, you are out of credits, or your workspace's spend cap paused its keys. plan_required names the plan that unlocks the tool; usage_exceeded means the credit balance is spent; spend_cap_reached means the key is paused until the cap resets or is raised: detail names the cap and the reset, cap_usd and resets_at (ISO 8601) carry them, and doc_url links pricing and credits. Not billed. |
403 scope_denied | This API key is limited to some products and this tool is not one of them. product names the tool's product and scopes the key's products. An upgrade does not change it: use a key whose scopes include the product, or change this key's scopes. Not billed. |
404 not_found | No such resource. Not billed. |
422 validation | A parameter is missing, out of range or the wrong type; param names it. Not billed. |
429 rate_limited | Your plan's rate limit is spent for this window. Retry after Retry-After seconds. Not billed. |
503 paid_ | The data could not be served completely right now; retry later. Not billed. |
504 request_timeout | The request ran past the server's time budget; retry. Not billed. |
This table lists what the spec declares for this route. Error responses lists every code FIRM sends, with when to retry.
Guides
Read the Crypto guide for this endpoint's fields and examples.