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+# Gevulot cli tool
+
+Gevulot cli tool allow to send command / Tx to a Gevulot node.
+
+## Available commands
+
+The command provided by gelulot-cli are:
+ * generate-key : Generate a secret key in the specified file. The secret key is use to sign the Tx send to the node.
+ * deploy: Send a deploy Tx to the node to deploy the specified prover / verifier.
+ * exec : send a program workflow Tx to be executed by the node.
+ * calculate-hash: Calculate the Hash of the specified file.
+
+ For detailled information use : gelulot-cli --help
+
+### Common parameters
+
+ * -j, --jsonurl: URL of the node json RPC access point. Default: http://localhost:9944
+ * -k, --keyfile: Path to a secret key file. Default: localkey.pki
+
+### Deploy command
+
+This command allow to deploy a compiled prover / verified image to the node specified with the --jsonurl parameter.
+
+The deployment can be done using file installed on the same host as the gelulot-cli tool. In this case the --prover and / or --verifier contains the path to the image to deploy. The Gevulot node try to open an http connection to the gelulot-cli host. Use --listen-addr to specify the http bind address use by gelulot-cli (default 127.0.0.1:8080). 
+If the host that execute gelulot-cli cannot be reach by the node using http, the image can be installed on a http host that is visible to the node and the url can be specified. In this case the --prover and / or --verifier parameters contains the hash of the image. Use the calculate-hash command to get the Hash of an image file. To specify the distant image http url use the --proverimgurl and / or --verifierimgurl 
+
+For more information use: gelulot-cli deploy --help
+
+#### Examples:
+
+To deploy local images: 
+```
+gelulot-cli -- deploy --name test --prover ./prover --verifier ./verifier
+```
+
+To deploy a local prover and a distant verifier: 
+```
+gelulot-cli -- deploy --name test --prover ../../target/debug/prover --verifier 491907d04032869088ef9b81004639ed1bb185f0413a261f74faaa0aa943d3f3 --verifierimgurl http://...
+```
+
+### Exec command
+
+This command allow to execute a workflow of task on the nodes. A task is an execution of a program on the node. Deployed prover or verifier are programs.
+
+The task are defined using a json format. Use --tasks parameter to specify a list of execution tasks or steps.
+
+#### Example of steps:
+
+To execute the program with the specified hash with arguments --nonce=42: 
+```
+{"program":"9616d42b0d82c1ed06eab8eaa26680261ad831012bbf3ad8303738a53bf85c7c","cmd_args":[{"name":"--nonce","value":"42"}],"inputs":[]}
+```
+
+To execute a program with input of type output for the program data: 
+```
+{"program":"37ef718f473a96e2dd56ac27fc175bfa08f4a30e34bdff5802e2f5071265a942", "cmd_args":[],"inputs":[{"Output":{"source_program":"9616d42b0d82c1ed06eab8eaa26680261ad831012bbf3ad8303738a53bf85c7c","file_name":"/workspace/proof.dat"}}]}
+```
+
+A command using these steps:
+```
+gelulot-cli -- exec --tasks '[{"program":"9616d42b0d82c1ed06eab8eaa26680261ad831012bbf3ad8303738a53bf85c7c","cmd_args":[{"name":"--nonce","value":"42"}],"inputs":[]},{"program":"37ef718f473a96e2dd56ac27fc175bfa08f4a30e34bdff5802e2f5071265a942","cmd_args":[],"inputs":[{"Output":{"source_program":"9616d42b0d82c1ed06eab8eaa26680261ad831012bbf3ad8303738a53bf85c7c","file_name":"/workspace/proof.dat"}}]}]'
+```
+
+## License
+
+This library is licensed under either of the following licenses, at your discretion.
+
+[Apache License Version 2.0](LICENSE-APACHE)
+
+[MIT License](LICENSE-MIT)
+
+Any contribution that you submit to this library shall be dual licensed as above (as defined in the Apache v2 License), without any additional terms or conditions.