diff --git a/x/evidence/spec/07_client.md b/x/evidence/spec/07_client.md
new file mode 100644
index 000000000000..83edd18d76b4
--- /dev/null
+++ b/x/evidence/spec/07_client.md
@@ -0,0 +1,182 @@
+# Client
+
+## CLI
+
+A user can query and interact with the `evidence` module using the CLI.
+
+### Query
+
+The `query` commands allows users to query `evidence` state.
+
+```bash
+simd query evidence --help
+```
+### evidence
+
+The `evidence` command allows users to list all evidence or evidence by hash.
+
+Usage:
+
+```bash
+simd query evidence [flags]
+```
+To query evidence by hash
+
+Example:
+
+```bash
+simd query evidence "DF0C23E8634E480F84B9D5674A7CDC9816466DEC28A3358F73260F68D28D7660"
+```
+
+Example Output:
+
+```bash
+evidence:
+  consensus_address: cosmosvalcons1ntk8eualewuprz0gamh8hnvcem2nrcdsgz563h
+  height: 11
+  power: 100
+  time: "2021-10-20T16:08:38.194017624Z"
+```
+
+To get all evidence
+
+Example:
+
+```bash
+simd query evidence
+```
+Example Output:
+
+```bash
+evidence:
+  consensus_address: cosmosvalcons1ntk8eualewuprz0gamh8hnvcem2nrcdsgz563h
+  height: 11
+  power: 100
+  time: "2021-10-20T16:08:38.194017624Z"
+pagination:
+  next_key: null
+  total: "1"
+```
+
+## REST
+
+A user can query the `evidence` module using REST endpoints.
+
+### Evidence
+
+Get evidence by hash
+
+```bash
+/cosmos/evidence/v1beta1/evidence/{evidence_hash}
+```
+
+Example:
+
+```bash
+curl -X GET "http://localhost:1317/cosmos/evidence/v1beta1/evidence/DF0C23E8634E480F84B9D5674A7CDC9816466DEC28A3358F73260F68D28D7660"
+```
+Example Output:
+
+```bash
+{
+  "evidence": {
+    "consensus_address": "cosmosvalcons1ntk8eualewuprz0gamh8hnvcem2nrcdsgz563h",
+    "height": "11",
+    "power": "100",
+    "time": "2021-10-20T16:08:38.194017624Z"
+  }
+}
+```
+
+### All evidence
+
+Get all evidence
+
+```bash
+/cosmos/evidence/v1beta1/evidence
+```
+
+Example:
+
+```bash
+curl -X GET "http://localhost:1317/cosmos/evidence/v1beta1/evidence"
+```
+Example Output:
+
+```bash
+{
+  "evidence": [
+    {
+      "consensus_address": "cosmosvalcons1ntk8eualewuprz0gamh8hnvcem2nrcdsgz563h",
+      "height": "11",
+      "power": "100",
+      "time": "2021-10-20T16:08:38.194017624Z"
+    }
+  ],
+  "pagination": {
+    "total": "1"
+  }
+}
+```
+
+## gRPC
+
+A user can query the `evidence` module using gRPC endpoints.
+
+### Evidence
+
+Get evidence by hash
+
+```bash
+cosmos.evidence.v1beta1.Query/Evidence
+```
+
+Example:
+
+```bash
+grpcurl -plaintext -d '{"evidence_hash":"DF0C23E8634E480F84B9D5674A7CDC9816466DEC28A3358F73260F68D28D7660"}' localhost:9090 cosmos.evidence.v1beta1.Query/Evidence
+```
+
+Example Output:
+
+```bash
+{
+  "evidence": {
+    "consensus_address": "cosmosvalcons1ntk8eualewuprz0gamh8hnvcem2nrcdsgz563h",
+    "height": "11",
+    "power": "100",
+    "time": "2021-10-20T16:08:38.194017624Z"
+  }
+}
+```
+
+### All evidence
+
+Get all evidence
+
+```bash
+cosmos.evidence.v1beta1.Query/AllEvidence
+```
+
+Example:
+
+```bash
+grpcurl -plaintext localhost:9090 cosmos.evidence.v1beta1.Query/AllEvidence
+```
+Example Output:
+
+```bash
+{
+  "evidence": [
+    {
+      "consensus_address": "cosmosvalcons1ntk8eualewuprz0gamh8hnvcem2nrcdsgz563h",
+      "height": "11",
+      "power": "100",
+      "time": "2021-10-20T16:08:38.194017624Z"
+    }
+  ],
+  "pagination": {
+    "total": "1"
+  }
+}
+```
\ No newline at end of file