diff --git a/package-lock.json b/package-lock.json
index 872634d..d9246fc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -156,6 +156,18 @@
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+    "tap": {
+      "version": "12.0.1",
+      "resolved": "https://registry.npmjs.org/tap/-/tap-12.0.1.tgz",
+      "integrity": "sha512-iEJytWaZy8risvfRjuV4+ST+Lrrui/MW2ZCWn01ZaMn0NKFej4+PpBy6bXGOg9+cEGNmI7d3Sdka/zTUZUGidA==",
+      "dev": true,
+      "requires": {
+        "bind-obj-methods": "^2.0.0",
+        "bluebird": "^3.5.1",
+        "clean-yaml-object": "^0.1.0",
+        "color-support": "^1.1.0",
+        "coveralls": "^3.0.1",
+        "foreground-child": "^1.3.3",
+        "fs-exists-cached": "^1.0.0",
+        "function-loop": "^1.0.1",
+        "glob": "^7.0.0",
+        "isexe": "^2.0.0",
+        "js-yaml": "^3.11.0",
+        "minipass": "^2.3.0",
+        "mkdirp": "^0.5.1",
+        "nyc": "^11.8.0",
+        "opener": "^1.4.1",
+        "os-homedir": "^1.0.2",
+        "own-or": "^1.0.0",
+        "own-or-env": "^1.0.1",
+        "rimraf": "^2.6.2",
+        "signal-exit": "^3.0.0",
+        "source-map-support": "^0.5.6",
+        "stack-utils": "^1.0.0",
+        "tap-mocha-reporter": "^3.0.7",
+        "tap-parser": "^7.0.0",
+        "tmatch": "^4.0.0",
+        "trivial-deferred": "^1.0.1",
+        "tsame": "^2.0.0",
+        "write-file-atomic": "^2.3.0",
+        "yapool": "^1.0.0"
+      }
+    },
+    "tap-mocha-reporter": {
+      "version": "3.0.7",
+      "resolved": "https://registry.npmjs.org/tap-mocha-reporter/-/tap-mocha-reporter-3.0.7.tgz",
+      "integrity": "sha512-GHVXJ38C3oPRpM3YUc43JlGdpVZYiKeT1fmAd3HH2+J+ZWwsNAUFvRRdoGsXLw9+gU9o+zXpBqhS/oXyRQYwlA==",
+      "dev": true,
+      "requires": {
+        "color-support": "^1.1.0",
+        "debug": "^2.1.3",
+        "diff": "^1.3.2",
+        "escape-string-regexp": "^1.0.3",
+        "glob": "^7.0.5",
+        "js-yaml": "^3.3.1",
+        "readable-stream": "^2.1.5",
+        "tap-parser": "^5.1.0",
+        "unicode-length": "^1.0.0"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "dev": true,
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "tap-parser": {
+          "version": "5.4.0",
+          "resolved": "https://registry.npmjs.org/tap-parser/-/tap-parser-5.4.0.tgz",
+          "integrity": "sha512-BIsIaGqv7uTQgTW1KLTMNPSEQf4zDDPgYOBRdgOfuB+JFOLRBfEu6cLa/KvMvmqggu1FKXDfitjLwsq4827RvA==",
+          "dev": true,
+          "requires": {
+            "events-to-array": "^1.0.1",
+            "js-yaml": "^3.2.7",
+            "readable-stream": "^2"
+          }
+        }
+      }
+    },
+    "tap-parser": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/tap-parser/-/tap-parser-7.0.0.tgz",
+      "integrity": "sha512-05G8/LrzqOOFvZhhAk32wsGiPZ1lfUrl+iV7+OkKgfofZxiceZWMHkKmow71YsyVQ8IvGBP2EjcIjE5gL4l5lA==",
+      "dev": true,
+      "requires": {
+        "events-to-array": "^1.0.1",
+        "js-yaml": "^3.2.7",
+        "minipass": "^2.2.0"
+      }
+    },
     "term-size": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/term-size/-/term-size-1.2.0.tgz",
@@ -4065,6 +7280,12 @@
       "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
       "dev": true
     },
+    "tmatch": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/tmatch/-/tmatch-4.0.0.tgz",
+      "integrity": "sha512-Ynn2Gsp+oCvYScQXeV+cCs7citRDilq0qDXA6tuvFwDgiYyyaq7D5vKUlAPezzZR5NDobc/QMeN6e5guOYmvxg==",
+      "dev": true
+    },
     "tmp": {
       "version": "0.0.33",
       "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz",
@@ -4116,6 +7337,43 @@
         "repeat-string": "^1.6.1"
       }
     },
+    "tough-cookie": {
+      "version": "2.3.4",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.4.tgz",
+      "integrity": "sha512-TZ6TTfI5NtZnuyy/Kecv+CnoROnyXn2DN97LontgQpCwsX2XyLYCC0ENhYkehSOwAp8rTQKc/NUIF7BkQ5rKLA==",
+      "dev": true,
+      "requires": {
+        "punycode": "^1.4.1"
+      }
+    },
+    "trivial-deferred": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/trivial-deferred/-/trivial-deferred-1.0.1.tgz",
+      "integrity": "sha1-N21NKdlR1jaKb3oK6FwvTV4GWPM=",
+      "dev": true
+    },
+    "tsame": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/tsame/-/tsame-2.0.0.tgz",
+      "integrity": "sha512-dAuzcnOPdqZYojylFQzEes95UDjve3HqKrlTCeLZKSDPMTsn3smzHZqsJj/sWD8wOUkg0RD++B11evyLn2+bIw==",
+      "dev": true
+    },
+    "tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "tweetnacl": {
+      "version": "0.14.5",
+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
+      "dev": true,
+      "optional": true
+    },
     "type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -4136,6 +7394,27 @@
       "resolved": "https://registry.npmjs.org/unicode-astral-regex/-/unicode-astral-regex-1.0.1.tgz",
       "integrity": "sha512-UP6cmDeiWi8bMDmkyXLRsDuVPTvPjh8Wsz+pHu1VkGgTBl4pUceYAdHXY0cdc6Q3+Z2q7QMzi/0E7L/S/yOvFw=="
     },
+    "unicode-length": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/unicode-length/-/unicode-length-1.0.3.tgz",
+      "integrity": "sha1-Wtp6f+1RhBpBijKM8UlHisg1irs=",
+      "dev": true,
+      "requires": {
+        "punycode": "^1.3.2",
+        "strip-ansi": "^3.0.1"
+      },
+      "dependencies": {
+        "strip-ansi": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^2.0.0"
+          }
+        }
+      }
+    },
     "union-value": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
@@ -4252,6 +7531,12 @@
       "integrity": "sha1-ihagXURWV6Oupe7MWxKk+lN5dyw=",
       "dev": true
     },
+    "uuid": {
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==",
+      "dev": true
+    },
     "validate-npm-package-license": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.3.tgz",
@@ -4262,6 +7547,17 @@
         "spdx-expression-parse": "^3.0.0"
       }
     },
+    "verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+      "dev": true,
+      "requires": {
+        "assert-plus": "^1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "^1.2.0"
+      }
+    },
     "which": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
@@ -4348,6 +7644,17 @@
         "mkdirp": "^0.5.1"
       }
     },
+    "write-file-atomic": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.3.0.tgz",
+      "integrity": "sha512-xuPeK4OdjWqtfi59ylvVL0Yn35SF3zgcAcv7rBPFHVaEapaDr4GdGgm3j7ckTwH9wHL7fGmgfAnb0+THrHb8tA==",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.1.11",
+        "imurmurhash": "^0.1.4",
+        "signal-exit": "^3.0.2"
+      }
+    },
     "xml2js": {
       "version": "0.4.19",
       "resolved": "https://registry.npmjs.org/xml2js/-/xml2js-0.4.19.tgz",
@@ -4380,6 +7687,12 @@
       "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
       "dev": true
     },
+    "yapool": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/yapool/-/yapool-1.0.0.tgz",
+      "integrity": "sha1-9pPymjFbUNmp2iZGp6ZkXJaYW2o=",
+      "dev": true
+    },
     "yargs": {
       "version": "11.1.0",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
diff --git a/package.json b/package.json
index 53d3b66..e2e8526 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "scripts": {
     "lint": "standard",
     "dev": "micro-dev service.js -s",
-    "test": "echo just lint for now && npm run lint",
+    "test": "tap test/*.js --reporter spec -j12",
     "start": "micro service.js",
     "precanary": "now alias rm badgen-canary -y -T amio",
     "canary": "now -T amio && now alias badgen-canary -T amio",
@@ -27,7 +27,9 @@
   },
   "devDependencies": {
     "micro-dev": "^3.0.0",
-    "standard": "^11.0.1"
+    "standard": "^11.0.1",
+    "supertest": "^3.1.0",
+    "tap": "^12.0.1"
   },
   "eslintConfig": {
     "extends": "standard"
diff --git a/test/chaos.js b/test/chaos.js
new file mode 100644
index 0000000..87c13c1
--- /dev/null
+++ b/test/chaos.js
@@ -0,0 +1,53 @@
+const assert = require('assert')
+const tap = require('tap')
+const request = require('supertest')
+const micro = require('micro')
+const badgen = require('../service.js')
+const liveFns = require('../libs/live-fns/_index.js')
+
+// process.env.TARGET should be the service url
+//   - "https://badgen-canary.now.sh"
+//   - "http://localhost:3000"
+const service = process.env.TARGET || micro(badgen)
+const isSvg = str => str.trim().startsWith('<svg ')
+
+const badgeTests = [
+  '/badge/npm/v1.2.3',
+  '/badge/npm/v1.2.3/blue',
+  '/badge/npm/v1.2.3/FAD',
+  '/badge/npm/v1.2.3/FAD?icon=npm',
+  '/npm/v/express',
+  '/npm/v/babel-core',
+  '/npm/v/ava/next',
+  '/npm/v/next/canary',
+  '/npm/v/@nestjs/core?icon=npm&label='
+]
+
+badgeTests.forEach(badgePath => {
+  tap.test(badgePath, t => {
+    return request(service)
+      .get(badgePath)
+      .expect(200)
+      .expect('Content-Type', /svg\+xml/)
+      .then(res => assert(isSvg(res.body.toString())))
+  })
+})
+
+const keywords = ['badge', 'v', 'nls', 'license', 'red']
+const chaosTests = new Array(10).fill().map(undef => {
+  const keys = keywords.concat(Object.keys(liveFns))
+  const len = Math.ceil(Math.random() * 5)
+  const args = new Array(len).fill().map(undef => {
+    return keys[Math.floor(Math.random() * keys.length)]
+  })
+  return `/${args.join('/')}`
+})
+
+chaosTests.forEach(badgePath => {
+  tap.test(badgePath, t => {
+    return request(service)
+      .get(badgePath)
+      .expect('Content-Type', /svg\+xml/)
+      .then(res => assert(isSvg(res.body.toString())))
+  })
+})