diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/asset.v1.json b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/asset.v1.json
new file mode 100644
index 0000000000000..071ae8285c938
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/asset.v1.json
@@ -0,0 +1,17 @@
+{
+  "title": "Asset",
+  "type": "object",
+  "description": "Item installed for Kibana (e.g. dashboard, visualization), Elasticsearch (e.g. ingest pipeline, ILM policy), or a Kibana plugin (e.g. ML job)",
+  "properties": {
+    "id": {
+      "type": "string"
+    },
+    "type": {
+      "$ref": "./asset_type.v1.json"
+    }
+  },
+  "required": [
+    "id",
+    "type"
+  ]
+}
diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/asset_type.v1.json b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/asset_type.v1.json
new file mode 100644
index 0000000000000..837115982f198
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/asset_type.v1.json
@@ -0,0 +1,13 @@
+{
+        "type": "string",
+        "title": "AssetType",
+        "description": "Types of assets which can be installed/removed",
+        "enum": [
+          "index-template",
+          "ingest-pipeline",
+          "ilm-policy",
+          "rollup-job",
+          "ml-job",
+          "data-frame-transform"
+        ]
+      }
diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/datasource.v1.json b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/datasource.v1.json
new file mode 100644
index 0000000000000..b25d5040d149f
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/datasource.v1.json
@@ -0,0 +1,31 @@
+{
+  "title": "Datasource",
+  "type": "object",
+  "description": "A logical grouping of places where data is coming from, such as \"Production\", \"Staging\", \"Production East-1\", \"Metrics Cluster\", etc. -- these groupings are user-defined. We store information collected from the user about this logical grouping such as a name and any other information we need about it to generate the associated config. A package defines its own data source templates that can use user-provided values to generate the data source config. A single data source will typically enable users to collect both logs and metrics. A data source can be in multiple policies at the same time. A datasource can have multiple streams.",
+  "properties": {
+    "name": {
+      "type": "string"
+    },
+    "package": {
+      "$ref": "./package.v1.json"
+    },
+    "streams": {
+      "type": "array",
+      "items": {
+        "$ref": "./stream.v1.json"
+      }
+    },
+    "id": {
+      "type": "string",
+      "format": "uuid"
+    },
+    "read_alias": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "name",
+    "package",
+    "streams"
+  ]
+}
diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/input.v1.json b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/input.v1.json
new file mode 100644
index 0000000000000..01fe26df97cee
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/input.v1.json
@@ -0,0 +1,50 @@
+{
+  "title": "Input",
+  "type": "object",
+  "description": "Where the data comes from",
+  "properties": {
+    "type": {
+      "type": "string",
+      "enum": [
+        "log",
+        "metric/system",
+        "metric/docker",
+        "etc"
+      ]
+    },
+    "config": {
+      "type": "object",
+      "example": "{paths: \"/var/log/*.log\"} or {metricsets: [\"container\", \"cpu\"]} or {username: \"elastic\", password: \"changeme\"}",
+      "description": "Mix of configurable and required properties still TBD. Object for now might become string"
+    },
+    "ingest_pipelines": {
+      "type": "array",
+      "description": "Need a distinction for \"main\" ingest pipeline. Should be handled during install. Likely by package/manifest format",
+      "items": {
+        "type": "string"
+      }
+    },
+    "id": {
+      "type": "string",
+      "format": "uuid"
+    },
+    "index_template": {
+      "type": "string"
+    },
+    "ilm_policy": {
+      "type": "string"
+    },
+    "fields": {
+      "type": "array",
+      "description": "",
+      "items": {
+        "type": "object",
+        "description": "contents from fields.yml"
+      }
+    }
+  },
+  "required": [
+    "type",
+    "config"
+  ]
+}
diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/output.v1.json b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/output.v1.json
new file mode 100644
index 0000000000000..c21cc27b80fcf
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/output.v1.json
@@ -0,0 +1,47 @@
+{
+  "title": "Output",
+  "type": "object",
+  "description": "Where to send the data",
+  "properties": {
+    "id": {
+      "type": "string"
+    },
+    "name": {
+      "type": "string",
+      "example": "\"default\" or \"infosec1\""
+    },
+    "type": {
+      "type": "string",
+      "enum": [
+        "elasticsearch",
+        "something",
+        "else"
+      ]
+    },
+    "url": {
+      "type": "string",
+      "format": "uri"
+    },
+    "api_token": {
+      "type": "string"
+    },
+    "index_name": {
+      "type": "string",
+      "example": "metrics-mysql-prod_west-access",
+      "description": "unique alias with write index"
+    },
+    "ingest_pipeline": {
+      "type": "string",
+      "example": "metrics-mysql-prod_west-access"
+    },
+    "config": {
+      "type": "object",
+      "description": "contains everything not otherwise specified (e.g. TLS, etc)"
+    }
+  },
+  "required": [
+    "id",
+    "name",
+    "type"
+  ]
+}
diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/package.v1.json b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/package.v1.json
new file mode 100644
index 0000000000000..68b16f5a24202
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/package.v1.json
@@ -0,0 +1,34 @@
+{
+  "title": "Package",
+  "type": "object",
+  "description": "A group of items related to a data ingestion source (e.g. MySQL, nginx, AWS). Can include Kibana assets, ES assets, data source configuration templates, manual install steps, etc.",
+  "properties": {
+    "name": {
+      "type": "string",
+      "example": "coredns"
+    },
+    "version": {
+      "type": "string",
+      "example": "1.0.1, 1.3.1"
+    },
+    "description": {
+      "type": "string",
+      "example": "CoreDNS logs and metrics integration.\nThe CoreDNS integrations allows to gather logs and metrics from the CoreDNS DNS server to get better insights.\n"
+    },
+    "title": {
+      "type": "string",
+      "example": "CoreDNS"
+    },
+    "assets": {
+      "type": "array",
+      "items": {
+        "$ref": "./asset.v1.json"
+      }
+    }
+  },
+  "required": [
+    "name",
+    "version",
+    "assets"
+  ]
+}
diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/policy.v1.json b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/policy.v1.json
new file mode 100644
index 0000000000000..1228e9a97d168
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/policy.v1.json
@@ -0,0 +1,37 @@
+{
+  "title": "Policy",
+  "type": "object",
+  "description": "The entire config for the Beats agent, including all assigned data source config outputs along with agent-wide configuration values",
+  "properties": {
+    "id": {
+      "type": "string"
+    },
+    "name": {
+      "type": "string"
+    },
+    "use_case": {
+      "type": "string"
+    },
+    "datasources": {
+      "type": "array",
+      "uniqueItems": true,
+      "items": {
+        "$ref": "./datasource.v1.json"
+      }
+    },
+    "description": {
+      "type": "string"
+    },
+    "status": {
+      "type": "string",
+      "enum": [
+        "active",
+        "inactive"
+      ]
+    }
+  },
+  "required": [
+    "id",
+    "status"
+  ]
+}
diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/stream.v1.json b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/stream.v1.json
new file mode 100644
index 0000000000000..76c531d3cd317
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/models/stream.v1.json
@@ -0,0 +1,31 @@
+{
+  "title": "Stream",
+  "type": "object",
+  "description": "A combination of an input type, the required config, an output, and any processors",
+  "properties": {
+    "id": {
+      "type": "string"
+    },
+    "input": {
+      "$ref": "./input.v1.json"
+    },
+    "config": {
+      "type": "object",
+      "example": "{paths: \"/var/log/*.log\"} or {metricsets: [\"container\", \"cpu\"]} or {username: \"elastic\", password: \"changeme\"}"
+    },
+    "output": {
+      "$ref": "./output.v1.json"
+    },
+    "processors": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      }
+    }
+  },
+  "required": [
+    "id",
+    "input",
+    "output"
+  ]
+}
diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/openapi.json b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/openapi.json
new file mode 100755
index 0000000000000..bc3e8aeffdb24
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/openapi.json
@@ -0,0 +1,160 @@
+{
+  "openapi": "3.0.0",
+  "info": {
+    "title": "Ingest",
+    "version": "0.2",
+    "description": "Strawman API for fka Ingest Plugin",
+    "license": {
+      "url": "https://raw.githubusercontent.com/elastic/elasticsearch/master/licenses/ELASTIC-LICENSE.txt",
+      "name": "Elastic"
+    },
+    "contact": {
+      "name": "Elastic Observability Team"
+    }
+  },
+  "servers": [
+    {
+      "url": "http://localhost:5601/api/epm",
+      "description": "EPM API Root"
+    }
+  ],
+  "paths": {
+    "/policies": {
+      "get": {
+        "summary": "Get policies",
+        "tags": [],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "array",
+                  "items": {
+                    "$ref": "./models/policy.v1.json"
+                  }
+                }
+              }
+            }
+          }
+        },
+        "parameters": [
+          {
+            "schema": {
+              "type": "string"
+            },
+            "in": "query",
+            "name": "datasource"
+          },
+          {
+            "schema": {
+              "type": "string"
+            },
+            "in": "query",
+            "name": "use_case"
+          },
+          {
+            "$ref": "#/components/parameters/pageIndexParam"
+          },
+          {
+            "$ref": "#/components/parameters/pageSizeParam"
+          }
+        ],
+        "description": "Return one or many polices based on the given filter",
+        "operationId": "getPolicies"
+      },
+      "parameters": []
+    },
+    "/datasources": {
+      "get": {
+        "summary": "Get datasources",
+        "tags": [],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "array",
+                  "items": {
+                    "$ref": "./models/datasource.v1.json"
+                  }
+                }
+              }
+            }
+          }
+        },
+        "parameters": [
+          {
+            "schema": {
+              "type": "string"
+            },
+            "in": "query",
+            "name": "policy_id"
+          },
+          {
+            "$ref": "#/components/parameters/pageIndexParam"
+          },
+          {
+            "$ref": "#/components/parameters/pageSizeParam"
+          }
+        ],
+        "description": "Return datasources",
+        "operationId": "getDatasources"
+      }
+    },
+    "/policy/{policy_id}": {
+      "parameters": [
+        {
+          "name": "policy_id",
+          "in": "path",
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
+        }
+      ],
+      "get": {
+        "summary": "Get policy by id",
+        "tags": [],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "./models/policy.v1.json"
+                }
+              }
+            }
+          }
+        },
+        "description": "Get Policy by id",
+        "operationId": "getPolicyById"
+      }
+    }
+  },
+  "components": {
+    "parameters": {
+      "pageSizeParam": {
+        "name": "per_page",
+        "in": "query",
+        "description": "The number of items to return",
+        "required": false,
+        "schema": {
+          "type": "integer",
+          "default": 50
+        }
+      },
+      "pageIndexParam": {
+        "name": "page",
+        "in": "query",
+        "required": false,
+        "schema": {
+          "type": "integer",
+          "default": 1
+        }
+      }
+    }
+  }
+}
diff --git a/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/types.ts b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/types.ts
new file mode 100644
index 0000000000000..967676b080871
--- /dev/null
+++ b/x-pack/legacy/plugins/integrations_manager/common/api_specs/ingest/types.ts
@@ -0,0 +1,138 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+/**
+ * The entire config for the Beats agent, including all assigned data source config outputs
+ * along with agent-wide configuration values
+ */
+export interface Policy {
+  datasources?: Datasource[];
+  description?: string;
+  id: string;
+  name?: string;
+  status: Status;
+  use_case?: string;
+}
+
+/**
+ * A logical grouping of places where data is coming from, such as "Production", "Staging",
+ * "Production East-1", "Metrics Cluster", etc. -- these groupings are user-defined. We
+ * store information collected from the user about this logical grouping such as a name and
+ * any other information we need about it to generate the associated config. A package
+ * defines its own data source templates that can use user-provided values to generate the
+ * data source config. A single data source will typically enable users to collect both logs
+ * and metrics. A data source can be in multiple policies at the same time. A datasource can
+ * have multiple streams.
+ */
+export interface Datasource {
+  id?: string;
+  name: string;
+  package: Package;
+  read_alias?: string;
+  streams: Stream[];
+}
+
+/**
+ * A group of items related to a data ingestion source (e.g. MySQL, nginx, AWS). Can include
+ * Kibana assets, ES assets, data source configuration templates, manual install steps, etc.
+ */
+export interface Package {
+  assets: Asset[];
+  description?: string;
+  name: string;
+  title?: string;
+  version: string;
+}
+
+/**
+ * Item installed for Kibana (e.g. dashboard, visualization), Elasticsearch (e.g. ingest
+ * pipeline, ILM policy), or a Kibana plugin (e.g. ML job)
+ */
+export interface Asset {
+  id: string;
+  type: AssetType;
+}
+
+/**
+ * Types of assets which can be installed/removed
+ */
+export enum AssetType {
+  DataFrameTransform = 'data-frame-transform',
+  IlmPolicy = 'ilm-policy',
+  IndexTemplate = 'index-template',
+  IngestPipeline = 'ingest-pipeline',
+  MlJob = 'ml-job',
+  RollupJob = 'rollup-job',
+}
+
+/**
+ * A combination of an input type, the required config, an output, and any processors
+ */
+export interface Stream {
+  config?: { [key: string]: any };
+  id: string;
+  input: Input;
+  output: Output;
+  processors?: string[];
+}
+
+/**
+ * Where the data comes from
+ */
+export interface Input {
+  /**
+   * Mix of configurable and required properties still TBD. Object for now might become string
+   */
+  config: { [key: string]: any };
+  fields?: Array<{ [key: string]: any }>;
+  id?: string;
+  ilm_policy?: string;
+  index_template?: string;
+  /**
+   * Need a distinction for "main" ingest pipeline. Should be handled during install. Likely
+   * by package/manifest format
+   */
+  ingest_pipelines?: string[];
+  type: InputType;
+}
+
+export enum InputType {
+  Etc = 'etc',
+  Log = 'log',
+  MetricDocker = 'metric/docker',
+  MetricSystem = 'metric/system',
+}
+
+/**
+ * Where to send the data
+ */
+export interface Output {
+  api_token?: string;
+  /**
+   * contains everything not otherwise specified (e.g. TLS, etc)
+   */
+  config?: { [key: string]: any };
+  id: string;
+  /**
+   * unique alias with write index
+   */
+  index_name?: string;
+  ingest_pipeline?: string;
+  name: string;
+  type: OutputType;
+  url?: string;
+}
+
+export enum OutputType {
+  Elasticsearch = 'elasticsearch',
+  Else = 'else',
+  Something = 'something',
+}
+
+export enum Status {
+  Active = 'active',
+  Inactive = 'inactive',
+}