All API endpoints are auth protected. To successfully issue a command, you need to provide an authentication header with your request. There are two ways to authenticate. JWT authentication is more secure but can be a little tricky to set up. HTTP Basic authentication is a less secure alternative, but is a good option if you want a simpler setup.
With Basic authentication, you provide an Authorization: Basic <token> header where the token is a base64 encoded string of your apiKey:apiSecret tokens.
This auth token is a JSON web token generated based on your API key and API secret. Pass { key: <your API key> } as the payload of the JWT call and the API secret as the secret, and set a kid header equal to the API key. Pass the resulting token as a Authorization: Bearer <generated token> header in all API requests.
An example of how to construct the JWT token can be found in the source code for the happo.io client.
Here's a full list of API paths you can call. All endpoints speak JSON. Body params are sent as a JSON blob in the body of the request. Responses are sent as JSON in the body of the HTTP response.
POST /api/reports/:sha
Uploads a list of snapshots for a certain identifier (usually a commit sha). If there is an existing report for the same sha, it will be overwritten as a result of calling this endpoint, unless you're posting partial reports.
sha | String | The id of the report. |
snaps | Array<Snapshot> | A list of snapshot objects associated with the report |
project | String | (optional) The identifying name of the project this report should belong to. If none is specified, the default project will be used. |
link | String | (optional) URL to the source of the report (e.g. PR URL). |
message | String | (optional) A short string describing the source of the report (e.g. PR title). |
partial | Boolean | (optional) Set this to true to amend the report instead of overwriting it. This is useful if you are running multiple processes for the same sha. Remember to call the Complete Report endpoint once you are done uploading all the partials, otherwise the report will never be fully constructed and useful. |
json | ReportStatus | An object containing a url where the uploaded report can be accessed |
GET /api/reports/:sha
Gets a list of snapshots for a certain identifier (usually a commit sha).
sha | String | The id of the report. |
project | String | (optional) The identifying name of the project this report belongs to. If none is specified, the default project will be assumed. |
json | Array<Snapshot> | A list of snapshots associated with this sha. |
GET /api/reports/:sha/status
Gets some metadata about a report
sha | String | The id of the report. |
project | String | (optional) The identifying name of the project this report belongs to. If none is specified, the default project will be assumed. |
json | ReportStatus | An object containing useful information about a report |
POST /api/reports/:sha/complete
When you're uploading partial reports (via the Create Report endpoint), you need to use this endpoint to signal that all the partials have been added and that the report is complete.
sha | String | The id of the report. |
project | String | (optional) The identifying name of the project the reports belong to. If none is specified, the default project will be assumed. |
json | ReportStatus | An object containing useful information about a report |
POST /api/reports/:sha1/compare/:sha2
Compare reports and get useful information on the possible differences.
sha1 | String | The id of the "before" report. |
sha2 | String | The id of the "after" report. |
project | String | (optional) The identifying name of the project the reports belong to. If none is specified, the default project will be assumed. |
link | String | (optional) URL to the source of the report (e.g. PR URL). |
message | String | (optional) A short string describing the source of the report (e.g. PR title). |
author | String | (optional) The email address for the author of the change. |
json | Comparison | An object with useful properties describing the differences between the two reports. |
GET /api/reports/:sha1/compare/:sha2/status
Get the comparison status between two reports. This endpoint can be used after the "Compare two reports" endpoint has been used, to check for the current resolution status.
sha1 | String | The id of the "before" report. |
sha2 | String | The id of the "after" report. |
project | String | (optional) The identifying name of the project the reports belong to. If none is specified, the default project will be assumed. |
json | ComparisonStatus | An object with the current comparison status |
POST /api/jobs/:sha1/:sha2/orchestrate
Tell Happo that you are about to run multiple comparisons between two shas. A special report will be created and a single, combined build status will be posted to github.
sha1 | String | The id of the "before" report. |
sha2 | String | The id of the "after" report. |
projects | Array<String> | A list of projects (identifying names) that you want to be part of the job. |
link | String | (optional) URL to the source of the orchestration job (e.g. PR URL). |
message | String | (optional) A short string describing the source of the job (e.g. PR title). |
POST /api/jobs/:sha1/:sha2
Tell Happo that you are about to run a comparison between two shas. A job will either be created (when no orchestration job exists for the same shas) or reused (when an orchestration job exists for the shas).
sha1 | String | The id of the "before" report. |
sha2 | String | The id of the "after" report. |
project | String | (optional) The project (identifying name) which this job is running for. Leave empty to use the default project. |
link | String | (optional) URL to the source of the job (e.g. PR URL). |
message | String | (optional) A short string describing the source of the job (e.g. PR title). |
POST /api/jobs/:sha1/:sha2/cancel
Tell Happo that a job comparing two shas had to be cancelled for some reason. It might have been cancelled in CI or failed in some other way. When you're using orchestrated jobs, this can help prevent orchestrated jobs getting in an infinite "pending" state.
sha1 | String | The id of the "before" report. |
sha2 | String | The id of the "after" report. |
project | String | (optional) The project (identifying name) which this job is running for. Leave empty to use the default project. |
status | String | (optional) Either "failure" or "success". This will control what status will be posted to GitHub. The default is "failure". |
link | String | (optional) URL to the source of the report (e.g. PR URL). |
message | String | (optional) A description of why the job was cancelled, e.g. "Cancelled in CI" |
POST /api/ignored-diffs
Use this endpoint to permanently ignore a diff between two snapshots. The
snapshotId1/snapshotId2 params need to correspond to ids from Snapshot
objects.
snapshot1Id | String | A snapshot id |
snapshot2Id | String | A snapshot id |
POST /api/subscriptions/:component
Add subscribers (email addresses) to a specific UI component. When a diff is found in a component, subscribers are notified with a link to the Happo report. Users can themselves unsubscribe manually. If you try adding an email address that has been unsubscribed by the user, it will be ignored and the user will continue to be unsubscribed.
component | String | The name of a component. Should match component names that are in the reports. |
emailAddresses | Array<String> | A list of email addresses to add as subscribers. |
DELETE /api/subscriptions/:component
Remove subscribers for a specific UI component.
component | String | The name of a component. Should match component names that are in the reports. |
emailAddresses | Array<String> | A list of email addresses to remove subscriptions for. |
GET /api/components/:component/:variant/:target
Get the latest snapshot for a component variant.
component | String | The name of a component. Should match component names that are in the reports. |
variant | String | The name of the variant. Should match variant names that are in the reports. |
target | String | The target of the snapshot. Should match target names that are in the reports. |
project | String | (optional) The identifying name of the project this report belongs to. If none is specified, the default project will be assumed. |
json | Snapshot | An object with details about the snapshot. |
POST /api/skip/:sha
Tells Happo to skip running for a certain sha. This is useful if you have Happo configured as a required check for your PRs but want to avoid running Happo tests (e.g. because no UI code changed). Calling this endpoint will post a successful build status to the PR/commit.
sha | String | The sha of the commit to skip. |
project | String | (optional) The identifying name of the project associated with the call. |
label | String | (optional) An optional message to use with the build status (default is "Skipped") |
These are the domain objects you can come across while communicating with the API.
An object describing a screenshot of a certain component variant
url | String | URL of the screenshot image. It's important that the URL is deterministically generated based on the contents of the image. A hash function (like md5) is of good help here, so that two images that have the same bitmap content end up having the same URL. More about URL creation. |
variant | String | The name of the variant (e.g. "disabled") |
target | String | The snapshot's target (e.g. "firefox", "iphone 7") |
component | String | The name of the component shown in the screenshot (e.g. "Button") |
height | Number | The pixel height of the screenshot image |
width | Number | The pixel width of the screenshot image |
id | String | A unique identifier for the snapshot |
An object with useful properties for a report.
url | String | A URL leading to the report page |
completedAt | Date | (An ISO 8601 string) Present if all the partials for a report have been added. Null otherwise. If you're not using partial reports, this value is always present. |
createdAt | Date | (An ISO 8601 string) The timestamp for when the report was initially created. |
snapshotCount | Number | The total number of snapshots included in the report |
An object with useful properties describing the differences between two reports.
diffs | Array<Snapshot> | A list of snapshots that are different |
added | Array<Snapshot> | Snapshots that have been added |
deleted | Array<Snapshot> | Snapshots that have been removed |
unchanged | Array<Snapshot> | A list of identical snapshots |
summary | String | A summary of the results, with the most important information listed |
equal | Boolean | True if the two reports are identical, false otherwise |
status | String | Either "failure" or "success". If the two reports are equal, or a user has manually accepted the comparison, the value is "success". If the two reports are not equal, or a user has manually rejected the comparison, the value is "failure". |
compareUrl | String | A link to a happo report page |
statusImageUrl | String | A link to an image showing the status for the comparison |
An object with information about the status of a comparison.
status | String | One of three values: "success" when the comparison is approved, "failure" when the comparison has been rejected or "awaiting review" when the comparison needs a review |
url | String | A URL leading to the comparison page |
createdAt | Date | (An ISO 8601 string) The timestamp for when the comparison was initially created. |