Review from @anorth at 0d7b13a5

.gitignore

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+node_modules/

LICENSE-APACHE

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+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

LICENSE-MIT

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+The MIT License (MIT)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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-# node-http-api
-Implementation and specification for the Filecoin node HTTP API
+# filecoin-http-api (WIP)
+OpenAPI specification for the Filecoin HTTP REST API. 
+
+The HTML version of the documentation can be [viewed here](https://filecoin-project.github.io/filecoin-http-api/).
+
+This is the specification for the HTTP REST API (to be) implemented by Filecoin nodes. Some details of its design and rationale can be found in this [Design Document](https://docs.google.com/document/d/1ANnTHOU-8612ayvvS7Ru4B1L4voojLE0R0TQ8zF1x5s/edit#heading=h.8v8p3fl8e3gj). 
+
+## Setup 
+To facilitate development and review we're using [speccy](https://github.com/wework/speccy) as a linter and [redoc](https://github.com/Redocly/redoc) to generate HTML documentation. You can install them using NPM or Yarn.
+
+```sh
+$ npm install
+# or
+$ yarn install
+```
+
+## Usage
+To view the specification in HTML form you can invoke redoc via:
+```sh
+$ npm run serve
+```
+And view the resulting documentation at http://localhost:5000.
+
+## License
+Dual MIT and Apache 2

api/actors.yml

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+models:
+  Actor:
+    type: object
+    properties:
+      kind:
+        type: string
+        readOnly: true
+        enum: [actor]
+      address:
+        type: string
+        description: The identifier that refers to an Actor in the Filecoin state. All Actors have an address. To learn more, take a look at the [address spec.](https://github.com/filecoin-project/specs/blob/master/address.md).
+      role:
+        type: string
+        enum: [Init,Account,StorageMiner,StorageMarket,PaymentChannel,MultisigAccount]
+      nonce:
+        type: number
+        description: Nonce is the nonce expected on the next message from this actor. Messages are processed in strict, contiguous nonce order. 
+      balance:
+        type: number
+        description: Balance is the amount of FIL in the actor's account.
+      head:
+        type: string
+        description: The CID ([Content Identifier](https://github.com/ipld/cid)) of the root of the Actor's state tree.
+      codeCid:
+        type: string
+        description: The CID ([Content Identifier](https://github.com/ipld/cid)) of the VM code for this actor's implementation (or a constant for actors implemented in Go code). Code may be nil for an uninitialized actor (which exists because it has received a balance)
+      info: 
+          oneOf: 
+            - $ref: '#/models/AccountActorState'
+            - $ref: '#/models/InitActorState'
+            - $ref: '#/models/PaymentChannelActorState'
+            - $ref: '#/models/StorageMinerActorState'
+            - $ref: '#/models/StorageMarketActorState'
+  AccountActorState:
+    $ref: '#/models/EmptyActorState'
+  EmptyActorState:
+    type: object 
+    description: There is no additional state exposed by this actor
+  InitActorState:
+    type: object
+    properties:
+      nextId: 
+        type: number
+        description: The next numerical ID to allocate to a newly instantiated Actor
+  PaymentChannelActorState:
+    $ref: '#/models/EmptyActorState'
+  StorageMarketActorState:
+    type: object
+    properties:
+      totalStorage:
+        type: number
+        description: Filecoin's total committed storage as of the current block.
+  StorageMinerActorState:
+    type: object
+    properties: 
+      owner:
+        type: string
+        description: The address of the account that owns this miner. Income and returned are paid to this address. This address is also allowed to change the worker address for the miner.
+      worker:
+        type: string
+        description: The address of the worker account for this miner. This will be the key that is used to sign blocks created by this miner, and sign messages sent on behalf of this miner to commit sectors, submit PoSts, and other day to day miner activities.
+      peerId: 
+        type: string
+        description: PeerID references the libp2p identity that the miner is operating.
+      sectorSize:
+        type: number
+        description: SectorSize is the amount of space in each sector committed to the network by this miner.
+      dePledgedCollateral:
+        type: number
+        description: Collateral that is waiting to be withdrawn
+      dePledgeTime: 
+        type: number
+        description: Time at which the depledged collateral may be withdrawn
+      sectors: 
+        type: array
+        items: 
+          $ref: 'actors.yml#/models/Sector'
+      provingSet:
+        type: array
+        items: 
+          $ref: 'actors.yml#/models/Sector'
+      currentFaultSet:
+        type: string
+      nextFaultSet:
+        type: string
+      nextDoneSet:
+        type: string
+      arbitratedDeals:
+        type: string
+      power:
+        type: number
+      slashedSet:
+        type: array
+        items: 
+          $ref: 'actors.yml#/models/Sector'
+      slashedAt:
+        type: number
+      ownedStorageCollateral:
+        type: number
+      provingPeriodEnd:
+        type: number
+  Sector:
+    type: object
+    properties:
+      id:
+        type: string
+      commR:
+        type: string
+endpoints:
+  actors_collection:
+    get:
+      operationId: listActors
+      summary: List Actors
+      description: List Actors currently known to this node in address order
+      tags:
+        - Actors
+      parameters:
+      - name: nextPageToken
+        in: query
+        description: Next page token
+        required: false
+        schema:
+          type: string
+      responses:
+        200:
+          description: Success
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/models/Actor'
+  actor_resource:
+    get:
+      operationId: getActorByAddress
+      summary: Find Actor by Address
+      description: Return information about the Actor with the specified Address
+      tags:
+        - Actors
+      parameters: 
+      - name: address
+        in: path
+        description: The address of the Actor to fetch
+        required: true
+        schema:
+          type: string
+      responses:
+        200:
+          description: Success
+          content:
+            application/json:
+              schema:
+                $ref: '#/models/Actor'