Update sig-provider, visualizer README.md (#887)

* Update sig-provider readme

* Update visualizer readme

sig-provider/README.md

@@ -0,0 +1,43 @@
+# <h1 align="center"> Sig-provider </h1>
+
+**Sig-provider** is a service that aggregates and decodes Ethereum signatures 
+for transactions and events from various sources. 
+Given a transaction input or an unparsed event, 
+it identifies possible decodings and parses the input accordingly.
+
+Supported decoding sources include:
+
+- [4byte directory](https://www.4byte.directory/)
+- [Openchain signatures](https://openchain.xyz/signatures)
+- [Ethereum bytecode database](https://docs.blockscout.com/about/features/ethereum-bytecode-database-microservice#solution-ethereum-bytecode-database-blockscout-ebd)
+
+Sig-provider is used by Blockscout to display decoded transaction data 
+on transaction pages and to determine transaction actions.
+
+## Requirements
+No additional dependencies
+
+## How to enable
+Set the following ENVs on blockscout instance:
+- `MICROSERVICE_SIG_PROVIDER_ENABLED=true`
+- `MICROSERVICE_SIG_PROVIDER_URL={service_url}`
+
+## Envs
+Here, we describe variables specific to this service. Variables common to all services can be found [here](../docs/common-envs.md).
+
+[anchor]: <> (anchors.envs.start)
+
+| Variable                                          | Required | Description                                                          | Default value                                      |
+|---------------------------------------------------|----------|----------------------------------------------------------------------|----------------------------------------------------|
+| `SIG_PROVIDER__SOURCES__FOURBYTE`                 |          | 4bytes directory HTTP URL                                            | `https://www.4byte.directory/`                     |
+| `SIG_PROVIDER__SOURCES__SIGETH`                   |          | Openchain Signature Database HTTP URL                                | `https://sig.eth.samczsun.com/`                    |
+| `SIG_PROVIDER__SOURCES__ETH_BYTECODE_DB__ENABLED` |          | If enabled, will use ethereum bytecode database as one of data sources | `true`                                             |
+| `SIG_PROVIDER__SOURCES__ETH_BYTECODE_DB__URL`     |          | Ethereum bytecode database HTTP URL                                  | `https://eth-bytecode-db.services.blockscout.com/` |
+
+[anchor]: <> (anchors.envs.end)
+
+## Links
+- Demo - https://sig-provider.services.blockscout.com
+- [Swagger](https://blockscout.github.io/swaggers/services/sig-provider/index.html)
+- [Packages](https://github.com/blockscout/blockscout-rs/pkgs/container/sig-provider)
+- [Releases](https://github.com/blockscout/blockscout-rs/releases?q=sig-provider&expanded=true)

visualizer/README.md

@@ -1,7 +1,27 @@
 # Visualizer
-A Rust service for generating Unified Modeling Language (UML) class diagrams and storage diagrams for Solidity contracts based on Node.js package
+A service for generating Unified Modeling Language (UML) class diagrams and storage diagrams for Solidity contracts based on Node.js package
 [sol2uml](https://github.com/naddison36/sol2uml).
 
+## Requirements
+- NodeJs environment with linked `sol2uml` binary (see [installation guide](https://github.com/naddison36/sol2uml?tab=readme-ov-file#install)) 
+
+## How to enable
+Set the following ENVs on blockscout instance:
+- `MICROSERVICE_VISUALIZE_SOL2UML_ENABLED=true`
+- `MICROSERVICE_VISUALIZE_SOL2UML_URL={service_url}`
+
+## Envs
+Here, we describe variables specific to this service. Variables common to all services can be found [here](../docs/common-envs.md).
+
+[anchor]: <> (anchors.envs.start)
+
+| Variable                                          | Required | Description                                                          | Default value                                      |
+|---------------------------------------------------|----------|----------------------------------------------------------------------|----------------------------------------------------|
+
+_* There are no service specific variables for the service_
+
+[anchor]: <> (anchors.envs.end)
+
 ## Result Examples
 
 ### UML diagram
@@ -72,3 +92,9 @@ For testing on **Windows** you need to rewrite some code due to the way the serv
 ```let output = Command::new("cmd").arg("/C").arg("sol2uml").args(args).output().await?;```
 
 `/C` should be replaced with the drive where sol2uml is installed.
+
+## Links
+- Demo - https://visualizer.services.blockscout.com
+- [Swagger](https://blockscout.github.io/swaggers/services/visualizer/index.html)
+- [Packages](https://github.com/blockscout/blockscout-rs/pkgs/container/visualizer)
+- [Releases](https://github.com/blockscout/blockscout-rs/releases?q=visualizer&expanded=true)