GITBOOK-53: Add tx endpoint

stacks-101/api.md

@@ -29,7 +29,9 @@ If you run a local node, it exposes an HTTP server on port `20443`. The info end
 
 The Stacks 2.0 Blockchain API (Hiro's API) is centrally hosted. However, every running Stacks node exposes an RPC API, which allows you to interact with the underlying blockchain. Instead of using a centrally hosted API, you can directly access the RPC API of a locally hosted Node.
 
-While the Node RPC API doesn't give the same functionality as the hosted Stacks 2.0 Blockchain API, you get similar functionality in a way that is scoped to that specific node.
+{% swagger src="https://raw.githubusercontent.com/stacks-network/stacks-core/master/docs/rpc/openapi.yaml" path="/v2/transactions" method="post" %}
+[https://raw.githubusercontent.com/stacks-network/stacks-core/master/docs/rpc/openapi.yaml](https://raw.githubusercontent.com/stacks-network/stacks-core/master/docs/rpc/openapi.yaml)
+{% endswagger %}
 
 {% swagger src="https://raw.githubusercontent.com/stacks-network/stacks-core/master/docs/rpc/openapi.yaml" path="/v2/contracts/interface/{contract_address}/{contract_name}" method="get" %}
 [https://raw.githubusercontent.com/stacks-network/stacks-core/master/docs/rpc/openapi.yaml](https://raw.githubusercontent.com/stacks-network/stacks-core/master/docs/rpc/openapi.yaml)