diff --git a/yarn.lock b/yarn.lock
index 8ba3fc84..43cb7453 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -557,27 +557,27 @@
     solc "^0.8.6"
     yargs "^16.1.1"
 
-"@graphql-tools/merge@8.2.10":
-  version "8.2.10"
-  resolved "https://registry.yarnpkg.com/@graphql-tools/merge/-/merge-8.2.10.tgz#fe2fe5ad33dc2d1b0af8751c0c08d18bb6bb6d88"
+"@graphql-tools/merge@8.2.11":
+  version "8.2.11"
+  resolved "https://registry.yarnpkg.com/@graphql-tools/merge/-/merge-8.2.11.tgz#0cdc6c9feb32e3392bf0c633881a78ccc1d24368"
   dependencies:
-    "@graphql-tools/utils" "8.6.9"
-    tslib "~2.3.0"
+    "@graphql-tools/utils" "8.6.10"
+    tslib "~2.4.0"
 
-"@graphql-tools/schema@^8.3.5":
-  version "8.3.10"
-  resolved "https://registry.yarnpkg.com/@graphql-tools/schema/-/schema-8.3.10.tgz#c3e373e6ad854f533fc7e55859dd8f9e81de30dd"
+"@graphql-tools/schema@^8.3.11":
+  version "8.3.11"
+  resolved "https://registry.yarnpkg.com/@graphql-tools/schema/-/schema-8.3.11.tgz#c0606b301852820a46042ebb888fd09cc402518a"
   dependencies:
-    "@graphql-tools/merge" "8.2.10"
-    "@graphql-tools/utils" "8.6.9"
-    tslib "~2.3.0"
+    "@graphql-tools/merge" "8.2.11"
+    "@graphql-tools/utils" "8.6.10"
+    tslib "~2.4.0"
     value-or-promise "1.0.11"
 
-"@graphql-tools/utils@8.6.9":
-  version "8.6.9"
-  resolved "https://registry.yarnpkg.com/@graphql-tools/utils/-/utils-8.6.9.tgz#fe1b81df29c9418b41b7a1ffe731710b93d3a1fe"
+"@graphql-tools/utils@8.6.10":
+  version "8.6.10"
+  resolved "https://registry.yarnpkg.com/@graphql-tools/utils/-/utils-8.6.10.tgz#38e42a97a74ffcf5a21e816401e2ca1647194f6a"
   dependencies:
-    tslib "~2.3.0"
+    tslib "~2.4.0"
 
 "@hapi/hoek@^9.0.0":
   version "9.3.0"
@@ -1035,6 +1035,22 @@
   version "0.14.0"
   resolved "https://registry.yarnpkg.com/@sindresorhus/is/-/is-0.14.0.tgz#9fb3a3cf3132328151f353de4632e01e52102bea"
 
+"@snapshot-labs/checkpoint@^0.1.0-beta.0":
+  version "0.1.0-beta.0"
+  resolved "https://registry.yarnpkg.com/@snapshot-labs/checkpoint/-/checkpoint-0.1.0-beta.0.tgz#797798c33e0a3536e83d118728d780a7bbd12dbc"
+  dependencies:
+    "@graphql-tools/schema" "^8.3.11"
+    bluebird "^3.7.2"
+    connection-string "^1.0.1"
+    dotenv "^16.0.1"
+    eslint "^8.15.0"
+    express-graphql "^0.12.0"
+    graphql "^16.5.0"
+    graphql-fields "^2.0.3"
+    mysql "^2.18.1"
+    pino "^7.11.0"
+    starknet "^3.7.0"
+
 "@snapshot-labs/sx@^0.1.0-beta.0":
   version "0.1.0-beta.0"
   resolved "https://registry.yarnpkg.com/@snapshot-labs/sx/-/sx-0.1.0-beta.0.tgz#8dc6de2eaeaebd5457441820680f7873175b9c0a"
@@ -1131,6 +1147,13 @@
   dependencies:
     "@types/node" "*"
 
+"@types/body-parser@*":
+  version "1.19.2"
+  resolved "https://registry.yarnpkg.com/@types/body-parser/-/body-parser-1.19.2.tgz#aea2059e28b7658639081347ac4fab3de166e6f0"
+  dependencies:
+    "@types/connect" "*"
+    "@types/node" "*"
+
 "@types/chai@*", "@types/chai@^4.3.0":
   version "4.3.1"
   resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.3.1.tgz#e2c6e73e0bdeb2521d00756d099218e9f5d90a04"
@@ -1141,6 +1164,29 @@
   dependencies:
     "@types/node" "*"
 
+"@types/connect@*":
+  version "3.4.35"
+  resolved "https://registry.yarnpkg.com/@types/connect/-/connect-3.4.35.tgz#5fcf6ae445e4021d1fc2219a4873cc73a3bb2ad1"
+  dependencies:
+    "@types/node" "*"
+
+"@types/express-serve-static-core@^4.17.18":
+  version "4.17.28"
+  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.17.28.tgz#c47def9f34ec81dc6328d0b1b5303d1ec98d86b8"
+  dependencies:
+    "@types/node" "*"
+    "@types/qs" "*"
+    "@types/range-parser" "*"
+
+"@types/express@^4.17.11":
+  version "4.17.13"
+  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.13.tgz#a76e2995728999bab51a33fabce1d705a3709034"
+  dependencies:
+    "@types/body-parser" "*"
+    "@types/express-serve-static-core" "^4.17.18"
+    "@types/qs" "*"
+    "@types/serve-static" "*"
+
 "@types/form-data@0.0.33":
   version "0.0.33"
   resolved "https://registry.yarnpkg.com/@types/form-data/-/form-data-0.0.33.tgz#c9ac85b2a5fd18435b8c85d9ecb50e6d6c893ff8"
@@ -1154,6 +1200,13 @@
     "@types/minimatch" "*"
     "@types/node" "*"
 
+"@types/jest@^27.5.0":
+  version "27.5.1"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-27.5.1.tgz#2c8b6dc6ff85c33bcd07d0b62cb3d19ddfdb3ab9"
+  dependencies:
+    jest-matcher-utils "^27.0.0"
+    pretty-format "^27.0.0"
+
 "@types/json-schema@^7.0.7":
   version "7.0.11"
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.11.tgz#d421b6c527a3037f7c84433fd2c4229e016863d3"
@@ -1178,6 +1231,10 @@
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/@types/lru-cache/-/lru-cache-5.1.1.tgz#c48c2e27b65d2a153b19bfc1a317e30872e01eef"
 
+"@types/mime@^1":
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/@types/mime/-/mime-1.3.2.tgz#93e25bf9ee75fe0fd80b594bc4feb0e862111b5a"
+
 "@types/minimatch@*":
   version "3.0.5"
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.5.tgz#1001cc5e6a3704b83c236027e77f2f58ea010f40"
@@ -1192,6 +1249,12 @@
   version "9.1.1"
   resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-9.1.1.tgz#e7c4f1001eefa4b8afbd1eee27a237fee3bf29c4"
 
+"@types/mysql@^2.15.21":
+  version "2.15.21"
+  resolved "https://registry.yarnpkg.com/@types/mysql/-/mysql-2.15.21.tgz#7516cba7f9d077f980100c85fd500c8210bd5e45"
+  dependencies:
+    "@types/node" "*"
+
 "@types/node-fetch@^2.5.5":
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.6.1.tgz#8f127c50481db65886800ef496f20bbf15518975"
@@ -1199,7 +1262,7 @@
     "@types/node" "*"
     form-data "^3.0.0"
 
-"@types/node@*", "@types/node@^17.0.34":
+"@types/node@*", "@types/node@^17.0.24", "@types/node@^17.0.34":
   version "17.0.34"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-17.0.34.tgz#3b0b6a50ff797280b8d000c6281d229f9c538cef"
 
@@ -1225,10 +1288,14 @@
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/@types/prettier/-/prettier-2.6.0.tgz#efcbd41937f9ae7434c714ab698604822d890759"
 
-"@types/qs@^6.2.31":
+"@types/qs@*", "@types/qs@^6.2.31":
   version "6.9.7"
   resolved "https://registry.yarnpkg.com/@types/qs/-/qs-6.9.7.tgz#63bb7d067db107cc1e457c303bc25d511febf6cb"
 
+"@types/range-parser@*":
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/@types/range-parser/-/range-parser-1.2.4.tgz#cd667bcfdd025213aafb7ca5915a932590acdcdc"
+
 "@types/resolve@^0.0.8":
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/@types/resolve/-/resolve-0.0.8.tgz#f26074d238e02659e323ce1a13d041eee280e194"
@@ -1241,6 +1308,13 @@
   dependencies:
     "@types/node" "*"
 
+"@types/serve-static@*":
+  version "1.13.10"
+  resolved "https://registry.yarnpkg.com/@types/serve-static/-/serve-static-1.13.10.tgz#f5e0ce8797d2d7cc5ebeda48a52c96c4fa47a8d9"
+  dependencies:
+    "@types/mime" "^1"
+    "@types/node" "*"
+
 "@types/sinon-chai@^3.2.3":
   version "3.2.8"
   resolved "https://registry.yarnpkg.com/@types/sinon-chai/-/sinon-chai-3.2.8.tgz#5871d09ab50d671d8e6dd72e9073f8e738ac61dc"
@@ -1547,6 +1621,10 @@ ansi-styles@^4.0.0, ansi-styles@^4.1.0, ansi-styles@^4.3.0:
   dependencies:
     color-convert "^2.0.1"
 
+ansi-styles@^5.0.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-5.2.0.tgz#07449690ad45777d1924ac2abb2fc8895dba836b"
+
 antlr4@4.7.1:
   version "4.7.1"
   resolved "https://registry.yarnpkg.com/antlr4/-/antlr4-4.7.1.tgz#69984014f096e9e775f53dd9744bf994d8959773"
@@ -3382,6 +3460,10 @@ dezalgo@^1.0.0:
     asap "^2.0.0"
     wrappy "1"
 
+diff-sequences@^27.5.1:
+  version "27.5.1"
+  resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-27.5.1.tgz#eaecc0d327fd68c8d9672a1e64ab8dccb2ef5327"
+
 diff@3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
@@ -3786,6 +3868,46 @@ eslint-visitor-keys@^3.3.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-3.3.0.tgz#f6480fa6b1f30efe2d1968aa8ac745b862469826"
 
+eslint@8.15.0, eslint@^8.15.0:
+  version "8.15.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-8.15.0.tgz#fea1d55a7062da48d82600d2e0974c55612a11e9"
+  dependencies:
+    "@eslint/eslintrc" "^1.2.3"
+    "@humanwhocodes/config-array" "^0.9.2"
+    ajv "^6.10.0"
+    chalk "^4.0.0"
+    cross-spawn "^7.0.2"
+    debug "^4.3.2"
+    doctrine "^3.0.0"
+    escape-string-regexp "^4.0.0"
+    eslint-scope "^7.1.1"
+    eslint-utils "^3.0.0"
+    eslint-visitor-keys "^3.3.0"
+    espree "^9.3.2"
+    esquery "^1.4.0"
+    esutils "^2.0.2"
+    fast-deep-equal "^3.1.3"
+    file-entry-cache "^6.0.1"
+    functional-red-black-tree "^1.0.1"
+    glob-parent "^6.0.1"
+    globals "^13.6.0"
+    ignore "^5.2.0"
+    import-fresh "^3.0.0"
+    imurmurhash "^0.1.4"
+    is-glob "^4.0.0"
+    js-yaml "^4.1.0"
+    json-stable-stringify-without-jsonify "^1.0.1"
+    levn "^0.4.1"
+    lodash.merge "^4.6.2"
+    minimatch "^3.1.2"
+    natural-compare "^1.4.0"
+    optionator "^0.9.1"
+    regexpp "^3.2.0"
+    strip-ansi "^6.0.1"
+    strip-json-comments "^3.1.0"
+    text-table "^0.2.0"
+    v8-compile-cache "^2.0.3"
+
 eslint@^5.6.0:
   version "5.16.0"
   resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.16.0.tgz#a1e3ac1aae4a3fbd8296fcf8f7ab7314cbb6abea"
@@ -3872,46 +3994,6 @@ eslint@^7.32.0:
     text-table "^0.2.0"
     v8-compile-cache "^2.0.3"
 
-eslint@^8.15.0:
-  version "8.15.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-8.15.0.tgz#fea1d55a7062da48d82600d2e0974c55612a11e9"
-  dependencies:
-    "@eslint/eslintrc" "^1.2.3"
-    "@humanwhocodes/config-array" "^0.9.2"
-    ajv "^6.10.0"
-    chalk "^4.0.0"
-    cross-spawn "^7.0.2"
-    debug "^4.3.2"
-    doctrine "^3.0.0"
-    escape-string-regexp "^4.0.0"
-    eslint-scope "^7.1.1"
-    eslint-utils "^3.0.0"
-    eslint-visitor-keys "^3.3.0"
-    espree "^9.3.2"
-    esquery "^1.4.0"
-    esutils "^2.0.2"
-    fast-deep-equal "^3.1.3"
-    file-entry-cache "^6.0.1"
-    functional-red-black-tree "^1.0.1"
-    glob-parent "^6.0.1"
-    globals "^13.6.0"
-    ignore "^5.2.0"
-    import-fresh "^3.0.0"
-    imurmurhash "^0.1.4"
-    is-glob "^4.0.0"
-    js-yaml "^4.1.0"
-    json-stable-stringify-without-jsonify "^1.0.1"
-    levn "^0.4.1"
-    lodash.merge "^4.6.2"
-    minimatch "^3.1.2"
-    natural-compare "^1.4.0"
-    optionator "^0.9.1"
-    regexpp "^3.2.0"
-    strip-ansi "^6.0.1"
-    strip-json-comments "^3.1.0"
-    text-table "^0.2.0"
-    v8-compile-cache "^2.0.3"
-
 espree@^5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/espree/-/espree-5.0.1.tgz#5d6526fa4fc7f0788a5cf75b15f30323e2f81f7a"
@@ -5162,9 +5244,9 @@ graphql-fields@^2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/graphql-fields/-/graphql-fields-2.0.3.tgz#5e68dff7afbb202be4f4f40623e983b22c96ab8f"
 
-graphql@^16.4.0:
-  version "16.4.0"
-  resolved "https://registry.yarnpkg.com/graphql/-/graphql-16.4.0.tgz#bb10b1b4683045dedcb67000eb4ad134a36c59e6"
+graphql@^16.5.0:
+  version "16.5.0"
+  resolved "https://registry.yarnpkg.com/graphql/-/graphql-16.5.0.tgz#41b5c1182eaac7f3d47164fb247f61e4dfb69c85"
 
 growl@1.10.5:
   version "1.10.5"
@@ -5991,6 +6073,28 @@ isurl@^1.0.0-alpha5:
     has-to-string-tag-x "^1.2.0"
     is-object "^1.0.1"
 
+jest-diff@^27.5.1:
+  version "27.5.1"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-27.5.1.tgz#a07f5011ac9e6643cf8a95a462b7b1ecf6680def"
+  dependencies:
+    chalk "^4.0.0"
+    diff-sequences "^27.5.1"
+    jest-get-type "^27.5.1"
+    pretty-format "^27.5.1"
+
+jest-get-type@^27.5.1:
+  version "27.5.1"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-27.5.1.tgz#3cd613c507b0f7ace013df407a1c1cd578bcb4f1"
+
+jest-matcher-utils@^27.0.0:
+  version "27.5.1"
+  resolved "https://registry.yarnpkg.com/jest-matcher-utils/-/jest-matcher-utils-27.5.1.tgz#9c0cdbda8245bc22d2331729d1091308b40cf8ab"
+  dependencies:
+    chalk "^4.0.0"
+    jest-diff "^27.5.1"
+    jest-get-type "^27.5.1"
+    pretty-format "^27.5.1"
+
 joi@^17.6.0:
   version "17.6.0"
   resolved "https://registry.yarnpkg.com/joi/-/joi-17.6.0.tgz#0bb54f2f006c09a96e75ce687957bd04290054b2"
@@ -7998,6 +8102,14 @@ prettier@^2.1.2, prettier@^2.5.1:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.6.2.tgz#e26d71a18a74c3d0f0597f55f01fb6c06c206032"
 
+pretty-format@^27.0.0, pretty-format@^27.5.1:
+  version "27.5.1"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-27.5.1.tgz#2181879fdea51a7a5851fb39d920faa63f01d88e"
+  dependencies:
+    ansi-regex "^5.0.1"
+    ansi-styles "^5.0.0"
+    react-is "^17.0.1"
+
 private@^0.1.6, private@^0.1.8:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
@@ -8236,6 +8348,10 @@ rc@^1.2.8:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
+react-is@^17.0.1:
+  version "17.0.2"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.2.tgz#e691d4a8e9c789365655539ab372762b0efb54f0"
+
 read-cmd-shim@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/read-cmd-shim/-/read-cmd-shim-3.0.0.tgz#62b8c638225c61e6cc607f8f4b779f3b8238f155"
@@ -9439,25 +9555,23 @@ swarm-js@^0.1.40:
 
 sx-api@snapshot-labs/sx-api:
   version "0.1.0"
-  uid e252f1568e8a43d7370d1a680531d9885c63528b
-  resolved "https://codeload.github.com/snapshot-labs/sx-api/tar.gz/e252f1568e8a43d7370d1a680531d9885c63528b"
+  uid "7c54af0dacbd3df1028e6df8667afac8e6e10044"
+  resolved "https://codeload.github.com/snapshot-labs/sx-api/tar.gz/7c54af0dacbd3df1028e6df8667afac8e6e10044"
   dependencies:
     "@ethersproject/address" "^5.6.0"
     "@ethersproject/bignumber" "^5.6.0"
-    "@graphql-tools/schema" "^8.3.5"
+    "@snapshot-labs/checkpoint" "^0.1.0-beta.0"
     "@snapshot-labs/sx" "^0.1.0-beta.0"
-    bluebird "^3.7.2"
-    connection-string "^1.0.1"
+    "@types/bn.js" "^5.1.0"
+    "@types/express" "^4.17.11"
+    "@types/jest" "^27.5.0"
+    "@types/mysql" "^2.15.21"
+    "@types/node" "^17.0.24"
     cors "^2.8.5"
     dotenv "^16.0.1"
-    eslint "^8.15.0"
+    eslint "8.15.0"
     express "^4.18.1"
-    express-graphql "^0.12.0"
-    graphql "^16.4.0"
-    graphql-fields "^2.0.3"
-    mysql "^2.18.1"
     nodemon "^2.0.16"
-    pino "^7.11.0"
     starknet "^3.7.0"
     ts-node "^10.7.0"
     typescript "^4.6.4"
@@ -9765,14 +9879,10 @@ tslib@^1.8.1, tslib@^1.9.0, tslib@^1.9.3:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
 
-tslib@^2.1.0:
+tslib@^2.1.0, tslib@~2.4.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
 
-tslib@~2.3.0:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.3.1.tgz#e8a335add5ceae51aa261d32a490158ef042ef01"
-
 tsort@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/tsort/-/tsort-0.0.1.tgz#e2280f5e817f8bf4275657fd0f9aebd44f5a2786"