Add 3 apikey information

Authentication/Stytch.md

@@ -0,0 +1,83 @@
+# [Stytch](https://stytch.com/docs/)
+
+## __Description__
+User infrastructure for modern applications
+
+## __Example Request__
+* Curl
+```
+curl --request POST \
+	--url https://test.stytch.com/v1/users \
+	-u 'PROJECT ID:SECRET' \
+	-H 'Content-Type: application/json' \
+	-d '{
+		"email": "test@stytch.com"
+	}'
+```
+
+* Raw
+```
+POST /v1/users HTTP/1.1
+Authorization: Basic UFJPSkVDVCBJRDpTRUNSRVQ=
+Host: test.stytch.com
+Content-Type: application/json
+Content-Length: 28
+
+{"email": "test@stytch.com"}
+```
+
+## __Response__
+* Success
+
+    If the email not exists
+```
+{
+    "email_id":"xxxxxxxxxxxx",
+    "phone_id":"",
+    "request_id":"xxxxxxxxxxxx",
+    "status":"active",
+    "status_code":201,
+    "user_id":"xxxxxxxxxxxx"
+}
+```
+
+    If the email exists
+```
+{
+    "status_code":400,
+    "request_id":"x","error_type":"duplicate_email",
+    "error_message":"A user with the specified email already exists for this project.",
+    "error_url":"https://stytch.com/docs/api/errors/400"
+}
+```
+* Error
+```
+{
+    "status_code":401,
+    "request_id":"request-id-test-b2001541-53b3-4faa-b7c0-915d2199c9fc",
+    "error_type":"unauthorized_credentials",
+    "error_message":"Unauthorized credentials.",
+    "error_url":"https://stytch.com/docs/api/errors/401"
+}
+```
+
+## __Regex__
+* Project ID
+```
+project-.*-[a-z0-9]{8}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{12}
+```
+* Secret Token
+```
+secret-.*-[a-zA-Z0-9-_=]{36}
+```
+
+## __Example key__
+* Project ID
+```
+project-test-c8267d84-db73-5b90-b8c4-e17b456857b8
+```
+* Secret Token
+```
+secret-test-wQZjAsRqcO6z-ac1M5t3WfuRy9C_rcFXQ-Y=
+secret-test-o1dsqZWeKkX4YSnIspz_LKGjiNFBMMeRJPo=
+```

Blockchain/Covalent.md

@@ -0,0 +1,63 @@
+# [Covalent](https://www.covalenthq.com/docs/api/)
+
+## __Description__
+Multi-blockchain data aggregator platform
+
+## __Example Request__
+* Curl
+```
+curl -X GET "https://api.covalenthq.com/v1/3/address/balances_v2/?&key=YOURAPIKEY" -H "Accept: application/json"
+```
+
+* Raw
+```
+GET /v1/3/address/balances_v2/?&key=YOURAPIKEY HTTP/1.1
+Host: api.covalenthq.com
+Accept: application/json
+```
+
+## __Response__
+* Success
+```
+{
+  "address": "string",
+  "updated_at": "1970-01-01T00:00:00.000Z",
+  "next_update_at": "1970-01-01T00:00:00.000Z",
+  "quote_currency": "string",
+  "uniswap_v2": {
+    "balances": [
+      {
+        "token_0": {
+          "contract_decimals": 0,
+          "contract_ticker_symbol": "string",
+          "contract_address": "string",
+          "logo_url": "string",
+          "balance": 0,
+          "quote": 0.5,
+          "quote_rate": 0.5
+        }
+        ...
+      }
+    ]
+  }
+}
+```
+* Error
+```
+{
+    "data":null,
+    "error":true,
+    "error_message":"Invalid API key",
+    "error_code":401
+}
+```
+
+## __Regex__
+```
+ckey_[a-z0-9]{27}
+```
+
+## __Example API key__
+```
+ckey_9c452a7xxxxxxb94832cxxxffff
+```

Blockchain/Etherscan.md

@@ -0,0 +1,44 @@
+# [Etherscan](https://docs.etherscan.io/)
+
+## __Description__
+Ethereum explorer API
+
+## __Example Request__
+* Curl
+```
+curl -X GET "https://api.etherscan.io/api?module=account&action=balance&address=0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae&tag=latest&apikey=YOURAPIKEY"
+```
+
+* Raw
+```
+GET /api?module=account&action=balance&address=0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae&tag=latest&apikey=YOURAPIKEY HTTP/1.1
+Host: api.etherscan.io
+```
+
+## __Response__
+* Success
+```
+{
+    "status":"1",
+    "message":"OK",
+    "result":"374868436783144397866641"
+}
+```
+* Error
+```
+{
+    "status":"1",
+    "message":"OK-Missing/Invalid API Key, rate limit of 1/5sec applied",
+    "result":"374868436783144397866641"
+}
+```
+
+## __Regex__
+```
+[A-Z0-9]{34}
+```
+
+## __Example API key__
+```
+47ZBD9SAWKNN6XYB6A92V4GMCC741VYV37
+```

Blockchain/README.md

@@ -0,0 +1,6 @@
+# Authentication
+List of Blockchain API
+
+## Index
+* [Covalent](Covalent.md)
+* [Etherscan](Etherscan.md)

README.md

@@ -13,24 +13,48 @@ Detailed information about API
 ![](https://img.shields.io/github/last-commit/daffainfo/all-about-api)
 
 ## Index
-* __[Animals](Anime)__
+<details>
+<summary>Animals</summary>
+
   * [IUCN](Animals/IUCN.md)
   * [TheCatApi](Animals/TheCatApi.md)
-* __[Anime](Anime)__
+</details>
+<details>
+<summary>Anime</summary>
+
   * [AniAPI](Anime/AniAPI.md)
   * [MyAnimeList](Anime/MyAnimeList.md)
-* __[Anti-Malware](Anti-Malware)__
+</details>
+<details>
+<summary>Anti-Malware</summary>
+
   * [AbuseIPDB](Anti-Malware/AbuseIPDB.md)
   * [AlienVault Open Threat Exchange (OTX)](Anti-Malware/AlienVault%20Open%20Threat%20Exchange.md)
   * [Google Safe Browsing](Anti-Malware/Google%20Safe%20Browsing.md)
   * [URLScan.io](Anti-Malware/URLScan.md)
   * [VirusTotal](Anti-Malware/VirusTotal.md)
-* __[Art-Design](Art-Design)__
+</details>
+<details>
+<summary>Art-Design</summary>
+
   * [Cooper Hewitt](Art-Design/Cooper%20Hewitt.md)
   * [Dribbble](Art-Design/Dribbble.md)
   * [Europeana](Art-Design/Europeana.md)
   * [IconFinder](Art-Design/IconFinder.md)
   * [Rijksmuseum](Art-Design/Rijksmuseum.md)
+</details>
+<details>
+<summary>Athentication</summary>
+
+  * [Micro User Service](Authentication/Micro%20User%20Service.md)
+  * [Stytch](Authentication/Stytch.md)
+</details>
+<details>
+<summary>BlockChain</summary>
+
+  * [Covalent](BlockChain/Covalent.md)
+  * [Etherscan](Blockchain/Etherscan.md)
+</details>
 
 ## References
 - [public-apis](https://github.com/public-apis/public-apis) (APIs list to be added to this repository)