diff --git a/controller/index.js b/controller/index.js
deleted file mode 100644
index d900793f..00000000
--- a/controller/index.js
+++ /dev/null
@@ -1,31 +0,0 @@
-
-var pkg = require('../package');
-var markdown = require('markdown').markdown;
-var fs = require('fs');
-
-function setup(){
-
-  var styleString = '<style>html{font-family:monospace}</style>';
-  var text = '# Pelias API\n';
-  text += '### Version: ['+ pkg.version+ '](https://github.com/pelias/api/releases)\n';
-  text += fs.readFileSync( './DOCS.md', 'utf8');
-  var indexHtml = styleString + markdown.toHTML(text);
-
-  function controller( req, res, next ) {
-    if (req.accepts('html')) {
-      res.send(indexHtml);
-      return;
-    }
-    // default behaviour
-    res.json({
-      name: pkg.name,
-      version: {
-        number: pkg.version
-      }
-    });
-  }
-
-  return controller;
-}
-
-module.exports = setup;
diff --git a/controller/markdownToHtml.js b/controller/markdownToHtml.js
new file mode 100644
index 00000000..656afe01
--- /dev/null
+++ b/controller/markdownToHtml.js
@@ -0,0 +1,28 @@
+
+var markdown = require('markdown').markdown;
+var fs = require('fs');
+
+function setup(peliasConfig, markdownFile){
+
+  var styleString = '<style>html{font-family:monospace}</style>';
+  var text = '# Pelias API\n';
+  text += '### Version: [' + peliasConfig.version + '](https://github.com/pelias/api/releases)\n';
+  text += fs.readFileSync( markdownFile, 'utf8');
+  var html = styleString + markdown.toHTML(text);
+
+  function controller( req, res ) {
+    if (req.accepts('html')) {
+      res.send(html);
+      return;
+    }
+    // default behaviour
+    res.json({
+      markdown: text,
+      html: html
+    });
+  }
+
+  return controller;
+}
+
+module.exports = setup;
diff --git a/controller/search.js b/controller/search.js
index d70c1b5c..c4c54754 100644
--- a/controller/search.js
+++ b/controller/search.js
@@ -15,19 +15,20 @@ function setup( backend, query ){
       body: query( req.clean )
     };
 
-    if (req.clean.type !== undefined) {
+    // ?
+    if( req.clean.hasOwnProperty('type') ){
       cmd.type = req.clean.type;
-      delete req.clean.type; // remove type from clean to avoid clutter
     }
 
     // query backend
-    service.search( backend, cmd, function( err, docs ){
+    service.search( backend, cmd, function( err, docs, meta ){
 
       // error handler
       if( err ){ return next( err ); }
 
       req.results = {
-        data: docs
+        data: docs,
+        meta: meta
       };
 
       next();
diff --git a/helper/geojsonify.js b/helper/geojsonify.js
index a56b86eb..82c4cf88 100644
--- a/helper/geojsonify.js
+++ b/helper/geojsonify.js
@@ -18,7 +18,8 @@ var DETAILS_PROPS = [
   'county',
   'localadmin',
   'locality',
-  'neighbourhood'
+  'neighbourhood',
+  'confidence'
 ];
 
 
diff --git a/helper/types.js b/helper/types.js
index a87a65b8..7455476e 100644
--- a/helper/types.js
+++ b/helper/types.js
@@ -5,7 +5,7 @@ var valid_types = require( '../query/types' );
  */
 var intersection = function intersection(set1, set2) {
   return set2.filter(function(value) {
-      return set1.indexOf(value) !== -1;
+    return set1.indexOf(value) !== -1;
   });
 };
 
@@ -14,7 +14,9 @@ module.exports = function calculate_types(clean_types) {
     return undefined;
   }
 
-
+  /* the layers and source parameters are cumulative:
+   * perform a set insersection of their specified types
+   */
   if (clean_types.from_layers || clean_types.from_source) {
     var types = valid_types;
 
@@ -29,7 +31,11 @@ module.exports = function calculate_types(clean_types) {
     return types;
   }
 
+  /*
+   * Type restrictions requested by the address parser should only be used
+   * if both the source and layers parameters are empty, so do this last
+   */
   if (clean_types.from_address_parser) {
     return clean_types.from_address_parser;
   }
-};
+};
\ No newline at end of file
diff --git a/middleware/confidenceScore.js b/middleware/confidenceScore.js
new file mode 100644
index 00000000..6c55bc27
--- /dev/null
+++ b/middleware/confidenceScore.js
@@ -0,0 +1,255 @@
+/**
+ *
+ *Basic confidence score should be computed and returned for each item in the results.
+ * The score should range between 0-1, and take into consideration as many factors as possible.
+ *
+ * Some factors to consider:
+ *
+ * - number of results from ES
+ * - score of item within the range of highest-lowest scores from ES (within the returned set)
+ * - linguistic match of query
+ * - detection (or specification) of query type. i.e. an address shouldn't match an admin address.
+ */
+
+var stats = require('stats-lite');
+var logger = require('pelias-logger').get('api');
+
+var RELATIVE_SCORES = true;
+
+function setup(peliasConfig) {
+  RELATIVE_SCORES = peliasConfig.hasOwnProperty('relativeScores') ? peliasConfig.relativeScores : true;
+  return computeScores;
+}
+
+function computeScores(req, res, next) {
+  // do nothing if no result data set
+  if (!req.results || !req.results.data || !req.results.meta) {
+    return next();
+  }
+
+  // compute standard deviation and mean from all scores
+  var scores = req.results.meta.scores;
+  var stdev = computeStandardDeviation(scores);
+  var mean = stats.mean(scores);
+
+  // loop through data items and determine confidence scores
+  req.results.data = req.results.data.map(computeConfidenceScore.bind(null, req, mean, stdev));
+
+  next();
+}
+
+/**
+ * Check all types of things to determine how confident we are that this result
+ * is correct. Score is based on overall score distribution in the result set
+ * as well as how closely the result matches the input parameters.
+ *
+ * @param {object} req
+ * @param {number} mean
+ * @param {number} stdev
+ * @param {object} hit
+ * @returns {object}
+ */
+function computeConfidenceScore(req, mean, stdev, hit) {
+  var dealBreakers = checkForDealBreakers(req, hit);
+  if (dealBreakers) {
+    hit.confidence = 0.5;
+    return hit;
+  }
+
+  var checkCount = 3;
+  hit.confidence = 0;
+
+  if (RELATIVE_SCORES) {
+    checkCount += 2;
+    hit.confidence += checkDistanceFromMean(hit._score, mean, stdev);
+    hit.confidence += computeZScore(hit._score, mean, stdev);
+  }
+  hit.confidence += checkName(req.clean.input, req.clean.parsed_input, hit);
+  hit.confidence += checkQueryType(req.clean.parsed_input, hit);
+  hit.confidence += checkAddress(req.clean.parsed_input, hit);
+
+  // TODO: look at categories and location
+
+  hit.confidence /= checkCount;
+
+  logger.debug('[confidence]:', hit.confidence, hit.name.default);
+
+  return hit;
+}
+
+function checkForDealBreakers(req, hit) {
+  if (!req.clean.parsed_input) {
+    return false;
+  }
+
+  if (req.clean.parsed_input.state && req.clean.parsed_input.state !== hit.admin1_abbr) {
+    logger.debug('[confidence][deal-breaker]: state !== admin1_abbr');
+    return true;
+  }
+
+  if (req.clean.parsed_input.postalcode && req.clean.parsed_input.postalcode !== hit.zip) {
+    logger.debug('[confidence][deal-breaker]: postalcode !== zip');
+    return true;
+  }
+}
+
+/**
+ * Check how statistically significant the score of this result is
+ * given mean and standard deviation
+ *
+ * @param {number} score
+ * @param {number} mean
+ * @param {number} stdev
+ * @returns {number}
+ */
+function checkDistanceFromMean(score, mean, stdev) {
+  return (score - mean) > stdev ? 1 : 0;
+}
+
+/**
+ * Compare input string or name component of parsed_input against
+ * default name in result
+ *
+ * @param {string} input
+ * @param {object|undefined} parsed_input
+ * @param {object} hit
+ * @returns {number}
+ */
+function checkName(input, parsed_input, hit) {
+  // parsed_input name should take precedence if available since it's the cleaner name property
+  if (parsed_input && parsed_input.name && hit.name.default.toLowerCase() === parsed_input.name.toLowerCase()) {
+    return 1;
+  }
+
+  // if no parsed_input check the input value as provided against result's default name
+  if (hit.name.default.toLowerCase() === input.toLowerCase()) {
+    return 1;
+  }
+
+  // if no matches detected, don't judge too harshly since it was a longshot anyway
+  return 0.7;
+}
+
+/**
+ * Input being set indicates the query was for an address
+ * check if house number was specified and found in result
+ *
+ * @param {object|undefined} input
+ * @param {object} hit
+ * @returns {number}
+ */
+function checkQueryType(input, hit) {
+  if (!!input.number && (!hit.address || (hit.address && !hit.address.number))) {
+    return 0;
+  }
+  return 1;
+}
+
+/**
+ * Determine the quality of the property match
+ *
+ * @param {string|number|undefined|null} inputProp
+ * @param {string|number|undefined|null} hitProp
+ * @param {boolean} expectEnriched
+ * @returns {number}
+ */
+function propMatch(inputProp, hitProp, expectEnriched) {
+
+  // both missing, but expect to have enriched value in result => BAD
+  if (!inputProp && !hitProp && expectEnriched) { return 0; }
+
+  // both missing, and no enrichment expected => GOOD
+  if (!inputProp && !hitProp) { return 1; }
+
+  // input has it, result doesn't => BAD
+  if (inputProp && !hitProp) { return 0; }
+
+  // input missing, result has it, and enrichment is expected => GOOD
+  if (!inputProp && hitProp && expectEnriched) { return 1; }
+
+  // input missing, result has it, enrichment not desired => 50/50
+  if (!inputProp && hitProp) { return 0.5; }
+
+  // both present, values match => GREAT
+  if (inputProp && hitProp && inputProp.toString().toLowerCase() === hitProp.toString().toLowerCase()) { return 1; }
+
+  // ¯\_(ツ)_/¯
+  return 0.7;
+}
+
+/**
+ * Check various parts of the parsed input address
+ * against the results
+ *
+ * @param {object} input
+ * @param {string|number} [input.number]
+ * @param {string} [input.street]
+ * @param {string} [input.postalcode]
+ * @param {string} [input.state]
+ * @param {string} [input.country]
+ * @param {object} hit
+ * @param {object} [hit.address]
+ * @param {string|number} [hit.address.number]
+ * @param {string} [hit.address.street]
+ * @param {string|number} [hit.zip]
+ * @param {string} [hit.admin1_abbr]
+ * @param {string} [hit.alpha3]
+ * @returns {number}
+ */
+function checkAddress(input, hit) {
+  var checkCount = 5;
+  var res = 0;
+
+  if (input && input.number && input.street) {
+    res += propMatch(input.number, (hit.address ? hit.address.number : null), false);
+    res += propMatch(input.street, (hit.address ? hit.address.street : null), false);
+    res += propMatch(input.postalcode, (hit.address ? hit.address.zip: null), true);
+    res += propMatch(input.state, hit.admin1_abbr, true);
+    res += propMatch(input.country, hit.alpha3, true);
+
+    res /= checkCount;
+  }
+  else {
+    res = 1;
+  }
+
+  return res;
+}
+
+/**
+ * z-scores have an effective range of -3.00 to +3.00.
+ * An average z-score is ZERO.
+ * A negative z-score indicates that the item/element is below
+ * average and a positive z-score means that the item/element
+ * in above average. When teachers say they are going to "curve"
+ * the test, they do this by computing z-scores for the students' test scores.
+ *
+ * @param {number} score
+ * @param {number} mean
+ * @param {number} stdev
+ * @returns {number}
+ */
+function computeZScore(score, mean, stdev) {
+  if (stdev < 0.01) {
+    return 0;
+  }
+  // because the effective range of z-scores is -3.00 to +3.00
+  // add 10 to ensure a positive value, and then divide by 10+3+3
+  // to further normalize to %-like result
+  return (((score - mean) / (stdev)) + 10) / 16;
+}
+
+/**
+ * Computes standard deviation given an array of values
+ *
+ * @param {Array} scores
+ * @returns {number}
+ */
+function computeStandardDeviation(scores) {
+  var stdev = stats.stdev(scores);
+  // if stdev is low, just consider it 0
+  return (stdev < 0.01) ? 0 : stdev;
+}
+
+
+module.exports = setup;
diff --git a/middleware/geocodeJSON.js b/middleware/geocodeJSON.js
index da6cfdf6..d2f58b46 100644
--- a/middleware/geocodeJSON.js
+++ b/middleware/geocodeJSON.js
@@ -25,16 +25,10 @@ function convertToGeocodeJSON(peliasConfig, req, next) {
   // the GeocodeJSON spec that is implemented by this instance.
   req.results.geojson.geocoding.version = '0.1';
 
-  // OPTIONAL. Default: null. The licence of the data. In case of multiple sources,
-  // and then multiple licences, can be an object with one key by source.
-  // Can be a freeform text property describing the licensing details.
-  // Can be a URI on the server, which outlines licensing details.
-  req.results.geojson.geocoding.license = peliasConfig.host + '/license';
-
   // OPTIONAL. Default: null. The attribution of the data. In case of multiple sources,
   // and then multiple attributions, can be an object with one key by source.
   // Can be a URI on the server, which outlines attribution details.
-  req.results.geojson.geocoding.attribution = peliasConfig.host + '/attribution';
+  req.results.geojson.geocoding.attribution = peliasConfig.host + 'attribution';
 
   // OPTIONAL. Default: null. The query that has been issued to trigger the
   // search.
diff --git a/package.json b/package.json
index 5c90c84e..50dc376b 100644
--- a/package.json
+++ b/package.json
@@ -52,6 +52,7 @@
     "pelias-query": "^1.1.0",
     "pelias-schema": "1.0.0",
     "pelias-suggester-pipeline": "2.0.2",
+    "stats-lite": "^1.0.3",
     "through2": "0.6.5"
   },
   "devDependencies": {
diff --git a/DOCS.md b/public/apiDoc.md
similarity index 100%
rename from DOCS.md
rename to public/apiDoc.md
diff --git a/public/attribution.md b/public/attribution.md
new file mode 100644
index 00000000..db9c392e
--- /dev/null
+++ b/public/attribution.md
@@ -0,0 +1,7 @@
+## Attribution
+* Geocoding by [Pelias](https://mapzen.com/pelias) from [Mapzen](https://mapzen.com)
+* Data from
+   * [OpenStreetMap](http://www.openstreetmap.org/copyright) © OpenStreetMap contributors under [ODbL](http://opendatacommons.org/licenses/odbl/)
+   * [Quattroshapes](https://github.com/foursquare/quattroshapes/blob/master/LICENSE.md) under [CC-BY-2.0](https://creativecommons.org/licenses/by/2.0/)
+   * [GeoNames](http://www.geonames.org/) under [CC-BY-3.0](https://creativecommons.org/licenses/by/2.0/)
+   * and other sources
diff --git a/routes/v1.js b/routes/v1.js
index d5a1c183..24ecccf2 100644
--- a/routes/v1.js
+++ b/routes/v1.js
@@ -1,3 +1,4 @@
+var express = require('express');
 var Router = require('express').Router;
 var reverseQuery = require('../query/reverse');
 
@@ -16,7 +17,7 @@ var middleware = {
 /** ----------------------- controllers ----------------------- **/
 
 var controllers     = {
-  index: require('../controller/index'),
+  mdToHTML: require('../controller/markdownToHtml'),
   place: require('../controller/place'),
   search: require('../controller/search')
 };
@@ -24,6 +25,7 @@ var controllers     = {
 /** ----------------------- controllers ----------------------- **/
 
 var postProc = {
+  confidenceScores: require('../middleware/confidenceScore'),
   renamePlacenames: require('../middleware/renamePlacenames'),
   geocodeJSON: require('../middleware/geocodeJSON'),
   sendJSON: require('../middleware/sendJSON')
@@ -41,12 +43,16 @@ function addRoutes(app, peliasConfig) {
 
   var routers = {
     index: createRouter([
-      controllers.index()
+      controllers.mdToHTML(peliasConfig, './public/apiDoc.md')
+    ]),
+    attribution: createRouter([
+      controllers.mdToHTML(peliasConfig, './public/attribution.md')
     ]),
     search: createRouter([
       sanitisers.search.middleware,
       middleware.types,
       controllers.search(),
+      postProc.confidenceScores(peliasConfig),
       postProc.renamePlacenames(),
       postProc.geocodeJSON(peliasConfig),
       postProc.sendJSON
@@ -54,6 +60,7 @@ function addRoutes(app, peliasConfig) {
     reverse: createRouter([
       sanitisers.reverse.middleware,
       controllers.search(undefined, reverseQuery),
+      // TODO: add confidence scores
       postProc.renamePlacenames(),
       postProc.geocodeJSON(peliasConfig),
       postProc.sendJSON
@@ -72,6 +79,7 @@ function addRoutes(app, peliasConfig) {
 
   // api root
   app.get ( base,                  routers.index );
+  app.get ( base + 'attribution',  routers.attribution );
   app.get ( base + 'place',        routers.place );
   app.get ( base + 'autocomplete', routers.search );
   app.get ( base + 'search',       routers.search );
diff --git a/service/search.js b/service/search.js
index 15b5cd14..1e77f69f 100644
--- a/service/search.js
+++ b/service/search.js
@@ -23,20 +23,28 @@ function service( backend, cmd, cb ){
 
     // map returned documents
     var docs = [];
+    var meta = {
+      scores: []
+    };
+
     if( data && data.hits && data.hits.total && Array.isArray(data.hits.hits)){
+
       docs = data.hits.hits.map( function( hit ){
 
+        meta.scores.push(hit._score);
+
         // map metadata in to _source so we
         // can serve it up to the consumer
         hit._source._id = hit._id;
         hit._source._type = hit._type;
+        hit._source._score = hit._score;
 
         return hit._source;
       });
     }
 
     // fire callback
-    return cb( null, docs );
+    return cb( null, docs, meta );
   });
 
 }
diff --git a/test/unit/controller/index.js b/test/unit/controller/index.js
index f59dacd4..cffe1030 100644
--- a/test/unit/controller/index.js
+++ b/test/unit/controller/index.js
@@ -1,19 +1,19 @@
 
-var setup = require('../../../controller/index');
+var setup = require('../../../controller/markdownToHtml');
 
 module.exports.tests = {};
 
 module.exports.tests.interface = function(test, common) {
   test('valid interface', function(t) {
     t.equal(typeof setup, 'function', 'setup is a function');
-    t.equal(typeof setup(), 'function', 'setup returns a controller');
+    t.equal(typeof setup({}, './public/apiDoc.md'), 'function', 'setup returns a controller');
     t.end();
   });
 };
 
 module.exports.tests.info_json = function(test, common) {
   test('returns server info in json', function(t) {
-    var controller = setup();
+    var controller = setup({}, './public/attribution.md');
     var req = {
       accepts: function (format) {
         t.equal(format, 'html', 'check for Accepts:html');
@@ -22,9 +22,8 @@ module.exports.tests.info_json = function(test, common) {
     };
     var res = { json: function( json ){
       t.equal(typeof json, 'object', 'returns json');
-      t.equal(typeof json.name, 'string', 'name');
-      t.equal(typeof json.version, 'object', 'version');
-      t.equal(typeof json.version.number, 'string', 'version number');
+      t.assert(json.hasOwnProperty('markdown'), 'return object contains markdown property');
+      t.assert(json.hasOwnProperty('html'), 'return object contains html property');
       t.end();
     }};
     controller( req, res );
@@ -33,21 +32,24 @@ module.exports.tests.info_json = function(test, common) {
 
 module.exports.tests.info_html = function(test, common) {
   test('returns server info in html', function(t) {
+    var filePath = './foo.md';
 
     var style = '<style>html{font-family:monospace}</style>';
     var mockText = 'this text should show up in the html content';
     var fsMock = {
       readFileSync: function (path, format) {
-        t.equal(path, './DOCS.md', 'open DOCS.md file');
+        t.equal(path, filePath, 'open specified file');
         t.equal(format, 'utf8', 'file format');
         return mockText;
       }
     };
 
     var proxyquire = require('proxyquire');
-    var setup = proxyquire('../../../controller/index', { 'fs': fsMock });
+    var setup = proxyquire('../../../controller/markdownToHtml', { 'fs': fsMock });
 
-    var controller = setup();
+    var config = { version: '1.1.1' };
+
+    var controller = setup(config, filePath);
     var req = {
       accepts: function () {
         return true;
diff --git a/test/unit/mock/backend.js b/test/unit/mock/backend.js
index fe617fe7..201ab7b5 100644
--- a/test/unit/mock/backend.js
+++ b/test/unit/mock/backend.js
@@ -10,6 +10,7 @@ responses['client/search/ok/1'] = function( cmd, cb ){
   return cb( undefined, searchEnvelope([{
     _id: 'myid1',
     _type: 'mytype1',
+    _score: 10,
     _source: {
       value: 1,
       center_point: { lat: 100.1, lon: -50.5 },
@@ -19,6 +20,7 @@ responses['client/search/ok/1'] = function( cmd, cb ){
   }, {
     _id: 'myid2',
     _type: 'mytype2',
+    _score: 20,
     _source: {
       value: 2,
       center_point: { lat: 100.2, lon: -51.5 },
@@ -35,6 +37,7 @@ responses['client/mget/ok/1'] = function( cmd, cb ){
   return cb( undefined, mgetEnvelope([{
     _id: 'myid1',
     _type: 'mytype1',
+    _score: 10,
     found: true,
     _source: {
       value: 1,
@@ -45,6 +48,7 @@ responses['client/mget/ok/1'] = function( cmd, cb ){
   }, {
     _id: 'myid2',
     _type: 'mytype2',
+    _score: 20,
     found: true,
     _source: {
       value: 2,
diff --git a/test/unit/service/search.js b/test/unit/service/search.js
index e1f97541..a7212775 100644
--- a/test/unit/service/search.js
+++ b/test/unit/service/search.js
@@ -19,6 +19,7 @@ module.exports.tests.functional_success = function(test, common) {
   var expected = [
     {
       _id: 'myid1', _type: 'mytype1',
+      _score: 10,
       value: 1,
       center_point: { lat: 100.1, lon: -50.5 },
       name: { default: 'test name1' },
@@ -26,6 +27,7 @@ module.exports.tests.functional_success = function(test, common) {
     }, 
     {
       _id: 'myid2', _type: 'mytype2',
+      _score: 20,
       value: 2,
       center_point: { lat: 100.2, lon: -51.5 },
       name: { default: 'test name2' },