# Stack traces

Stack traces in blocktorch are provided as call trace as well as interaction flow visualization. They are accessible in the [log details](/use-cases/searching/logs/log-details.md), the [account abstraction explorer](/concepts/data-sources/account-abstraction-modules.md) and the [step debugger](/use-cases/debugging/step-debugger.md).

The stack trace displays the sequence of function calls in a transaction as a tree structure.

Each element represents a function call or event trigger and includes information such as call stack depth, call type, and call parameters. 

In the[ Step debugger ](/use-cases/debugging/step-debugger.md)you can also access the smart contract source code along with the stack trace to dig deeper into the data. 

### Call trace

<figure><img src="/files/g4sfMnb6bB0rOmdqabG9" alt=""><figcaption></figcaption></figure>

&#x20;The call trace includes:

* The `Calltype` which can be `CALL`, `STATICCALL` or `DELEGATECALL`
* The `Gas used` shown as whole number in \[] and on the right side visualized in blue bars to do gas profiling of each function step
* The `to address` of the contract the call was made to&#x20;
* The decoded function signature with the argument types it requires
* The `+` and `-` signs enable you to elapse and expand the tree

### Interaction flow

<figure><img src="/files/h2vRBcNWIOvetrbuXckm" alt=""><figcaption></figcaption></figure>

&#x20;The call trace includes:

* The `Calltype` which can be `CALL`, `STATICCALL` , `DELEGATECALL`  or `OTHER` , the call types are also visually color coded as the color of the branch
* The `Gas used` visualized as the thickness/weight of the branch
* The `to address` of the contract the call was made to&#x20;
* The decoded function signature with the argument types it requires
* The round node at each branch can be clicked to elapse and expand the branch


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