Documenso plugin

Use Documenso through Corsair: one client, typed API calls. Generate a team-scoped API token in Documenso Team Settings / API Tokens and store it as the Corsair api_key. Documenso expects the raw token in Authorization (no Bearer prefix). The current base URL is /api/v2; set baseUrl for staging or a self-hosted instance. HTTPS is required except for localhost loopback development URLs. The OpenAPI reference still lists deprecated v2 /document/*, /template/*, and matching field/recipient routes. They are included here for migration compatibility and scheduled for removal on 1 March 2027; use /envelope/* operations for new integrations. The plugin does not implement v1, v2-beta, or webhooks. PDF downloads return { kind: "binary", contentType, base64, size } and are limited to 20 MiB per response. PDF uploads use files: [{ filename, contentType, contentBase64 }] or the legacy single file shape; they are capped at 16 MiB per file and 32 MiB total per request for bounded transport. These plugin-side limits are not Documenso plan limits. Standard requests time out after 20 seconds; multipart uploads and PDF downloads use a bounded 120-second timeout so permitted transfers can complete on slower links. What you get:

89 typed API operations

Setup

Install

npm install corsair @corsair-dev/documenso better-sqlite3
npm install --save-dev @types/better-sqlite3

yarn add corsair @corsair-dev/documenso better-sqlite3
yarn add --dev @types/better-sqlite3

pnpm install corsair @corsair-dev/documenso better-sqlite3
pnpm install --save-dev @types/better-sqlite3

bun add corsair @corsair-dev/documenso better-sqlite3
bun add --dev @types/better-sqlite3

Add the plugin

corsair.ts

import Database from 'better-sqlite3';
import { createCorsair } from 'corsair';
import { documenso } from '@corsair-dev/documenso';

export const corsair = createCorsair({
	plugins: [
		documenso(),
	],
	database: new Database('corsair.db'),
	kek: process.env.CORSAIR_KEK!,
	multiTenancy: true,
	hub: {
		projectApiKey: process.env.CORSAIR_API_KEY!,
		signingSecret: process.env.CORSAIR_SIGNING_SECRET!,
	},
});

With multiTenancy: true, scope calls with corsair.withTenant(id). See Quick start for KEK + Hub keys, and Multi-tenancy for account isolation.

Choose authentication

API Key (Recommended)

Store the Documenso API key before the first call: pnpm corsair setup --plugin=documenso --tenant=acme api_key=<your-key> (leave out --tenant without multiTenancy), or pass it as key in the plugin options. With Hub, each tenant enters their own key on the connect page. See API key auth.

documenso()

More: API Key

Connect a tenant

Mint a connect link and send the tenant to it. Hub hosts the page and delivers the result to your app — see Connect / OAuth.

const { connectUrl } = await corsair.manage.connect.createLink({
	plugin: 'documenso',
	tenantId: 'acme',
});
// redirect the user's browser to connectUrl

Example API calls

List envelopes

const tenant = corsair.withTenant('acme');
await tenant.documenso.api.envelopes.find.get({ perPage: 1 });

Update an envelope

const tenant = corsair.withTenant('acme');
await tenant.documenso.api.envelopes.update.post({ envelopeId: 'envelope_sample' });

See the full list on the API page.

What’s next

API reference

Every documenso.api.* operation with input and output types.

Connect / OAuth

createLink, Hub delivery, and tenant connect flows.

Use with agents

Expose this plugin’s operations as MCP tools.

Overview

Plugins