Create, issue, send and search digital certificates and badges, and manage the credential templates and designs behind them, in Certifier.
Certifier ships in the w6w first-party pack. It declares 19 actions, 2 health checks, and the host runs its code in a sandbox that never sees the credential.
io.w6w.certifierCertifier issues digital certificates and badges that recipients keep in a shareable digital wallet, and verifies them for whoever they show them to. This app puts the whole issuing path in a workflow: create a credential for a recipient from a credential template, issue it, and send it by email, or do all three in one call when a course completes or a form is submitted.
Beyond issuing, a workflow can search credentials by status, recipient, dates and template, update a credential’s recipient or dates, read the design previews (PNG and PDF) a recipient will see, and delete a credential. It can also manage credential templates (Certifier calls them groups) and read the certificate and badge designs they are built from, and read or record the interaction events (views, shares to LinkedIn, downloads, verifications) that tell you whether a credential is being used.
The app authenticates with a workspace access token from Certifier’s Developers settings, pinned to the 2022-10-26 API version. Health checks track Certifier’s own status page, including its API monitor, and whether the API is answering.
Three routes to the same 19 actions. The Workflow tab is generated from Certifier's own manifest and carries its real ids, so it is copy-pasteable; the Code and CLI examples are the same call for any action on any app, so every app-specific value in them is a blank you fill in.
credential-create Create a credential in `draft` status. Issue it, then send it, as separate steps; or use Create, Issue and Send Credential to do all three in one call.
credential-create-issue-send Create a credential, issue it and email it to the recipient in one call. This is the all-in-one endpoint for the common case; the recipient email is what it sends to.
credential-designs-get List the ordered designs a credential renders with and their PNG and PDF preview URLs (immutable, versioned by a digest of the design and the resolved attributes).
credential-get Fetch one credential: status, recipient, dates, and custom attributes.
credential-list List credentials, newest page first, 20 per page by default. Use Search Credentials to filter.
credential-search Find credentials with a structured filter (AND / OR / NOT over status, recipient, group, dates) and sort, one page at a time.
credential-send Email an `issued` credential to its recipient. Only issued credentials with a recipient email can be sent.
credential-update Change a credential's recipient, dates or custom attributes. Only the fields you set change.
design-list List the certificate and badge designs in the workspace, with PNG preview URLs.
interaction-create Record an interaction event (view, share, download, verification) against a credential, for when the credential is shown somewhere other than Certifier's own wallet.
interaction-list List what recipients and guests did with credentials: views, shares, downloads, verifications. Filter to one credential or read the whole workspace.
template-create Create a credential template (group) from one or more certificate/badge designs.
template-delete Permanently delete a credential template (group). This cannot be undone.
template-get Fetch one credential template (group) with its ordered design IDs.
template-list List credential templates (the API calls them groups): each one fixes the designs, name and learning-event link a credential is issued with.
template-update Change a credential template's name, designs or learning-event link. Fields you leave empty are unchanged; Design IDs, when set, REPLACES the whole ordered list.
A workflow step names the app and the action, and the editor fills in the
connection when you pick one. This is the Step shape from the
workflow spec, carrying Certifier's real ids.
{
"manifestVersion": "2",
"name": "certifier-example",
"steps": [
{
"id": "credential-create",
"uses": {
"app": "io.w6w.certifier",
"action": "credential-create",
"connection": "conn_YOUR_CONNECTION_ID"
},
"with": {
"groupId": "<groupId>",
"recipientName": "<recipientName>"
}
}
]
}credential-create credential-create-issue-send credential-designs-get credential-get credential-issue +14 more actions available
Every app-specific value here is a blank you have to fill in. An
app action is reached through the connection that authenticates it, so the
address is a connection id, not the app id — and connections belong to your account,
so a public page cannot know yours. Create one for Certifier, then fill in
the three blanks: conn_YOUR_CONNECTION_ID, the action key, and the
parameters that action declares. The call itself is real — the shape is transcribed
from the studio's own snippet builder, which prints the same kind of blanks — but
nothing in it is specific to Certifier. The Workflow tab is where this app's
real ids are.
npm install @w6w/sdkyarn add @w6w/sdkpnpm add @w6w/sdkdeno add npm:@w6w/sdkimport { W6wClient, isActionRun } from "@w6w/sdk";
// Reads W6W_BASE_URL and W6W_TOKEN from the environment when omitted.
const client = new W6wClient();
const envelope = await client.run({
urn: "conn_YOUR_CONNECTION_ID",
action: "credential-create",
payload: {
groupId: "<value>",
recipientName: "<value>",
// recipientEmail: "<value>",
// issueDate: "<value>",
// expiryDate: "<value>",
// customAttributes: "<value>",
},
});
if (isActionRun(envelope)) console.log(envelope.value); npm install -g @w6w/cli w6w run conn_YOUR_CONNECTION_ID --action credential-create --payload '{"groupId":"<value>","recipientName":"<value>"}' Give an AI agent Certifier — without giving it Certifier's credentials. One MCP endpoint exposes every app, function and workflow the caller is entitled to, as tools it can discover and run. Access is granted per team while we onboard.
One tool call{
"name": "w6w_invoke",
"arguments": {
"ref": "app:io.w6w.certifier#credential-create",
"input": {
"groupId": "<groupId>",
"recipientName": "<recipientName>"
}
}
}
Every tool names its target with a single ref. The
app: form above doesn't name a connection at all — the
host resolves which of the caller's Certifier connections to sign
with, and refuses rather than guesses when the answer is ambiguous.
The token is attached host-side, at the moment of the call. It is never a tool argument, never in the model's context, and never in a transcript — so a prompt injection has nothing to exfiltrate.
Tools are derived per end user from what that person has actually connected and is entitled to — not one shared bot identity carrying the union of everyone's access.
Multi-step work runs on the workflow engine and returns a run handle the agent can poll — retries, branching and state survive the conversation that started them.
Certifier's declared health checks are on the surface too, so an agent can tell "the vendor is down" from "your credential expired" before it burns a retry on either.
The MCP surface is part of the hosted platform. Certifier itself is MIT, and the runtime that executes it is source-available (FSL).
Certifier declares its own checks, so its health is a property of the app rather than something the host guesses at.
Monitor status from status.certifier.io. The API monitor decides the verdict; the app, issuer portal, storage, docs and help-center monitors are shown as detail.
Unauthenticated GET api.certifier.io/v1/groups. Certifier's own JSON 401 passes: it proves the API is answering. Key validity is the derived auth check's job.