Efimis Developer Platform

The financial core for modern law firms.

Efimis unifies matter, time, billing, ledger, client money, and firm money in one compliant, AI-enabled platform — with open APIs, embedded workflows, and seamless integrations.

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OAuth 2.0 · Client credentials · Fits your existing stack · AU · UK regions

 # Create a matter against an existing client
curl "https://api.uk.efimis.com/acme/v1/matters" \
  -X "POST" \
  -H "Authorization: Bearer $EFIMIS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{ "clientId": "client_3f7b…", "title": "Smith v. Johnson" }' 

 import { Efimis } from "@efimis/sdk";

const efimis = new Efimis({ region: "uk", tenant: "acme" });

const matter = await efimis.matters.create({
  clientId: "client_3f7b…",
  title:    "Smith v. Johnson",
});

console.log(matter.id);  // matter_22635a… 

 var client = new EfimisClient(region: "uk", tenant: "acme");

var matter = await client.Matters.CreateAsync(new CreateMatter {
    ClientId = "client_3f7b…",
    Title    = "Smith v. Johnson",
});

Console.WriteLine(matter.Id); 

Pathways

What are you building?

Pick the entry point that matches your integration. Each pathway maps to a focused subset of the platform.

Push & pull data

Read or write entities, matters, work items, and invoices through our REST and GraphQL APIs.

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Embed in your app

Drop UI Components — billing widgets, ledger viewers, time entry — straight into your product.

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Migrate data in

Use the ETL pipeline to land an existing PMS or ledger into a staged Efimis tenant.

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Connect AI agents

Expose Efimis to Claude, ChatGPT, and Cursor via our Model Context Protocol server.

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Product reference

One coherent platform, seven surfaces.

Browse the core surfaces of the platform, from APIs and ETL through embedded UI, connectors, and MCP access.

API

REST + GraphQL + Webhooks

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UI

Embeddable React components

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ETL

Bulk import via SQL schema

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Connectors

Zapier · Power Automate

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DMS

NetDocuments · iManage

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Sandbox

Isolated test tenant + data

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MCP

Model Context Protocol

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Webhooks

Subscribe once. React to everything.

Register an endpoint and subscribe to webhook events for matters, invoices, and more. Signed with HMAC-SHA256 on every payload.

HMAC signature on every payload
Up to 5 subscriptions per tenant
Multiple event types per subscription

 await efimis.webhooks.create({
  id:      "webhook_acme_invoices",
  url:     "https://acme.io/efimis/receive",
  secret:  process.env.EFIMIS_WEBHOOK_SECRET,
  enabled: true,
  events:  [
    /* event types — see webhook documentation */
  ],
}); 

 app.post("/efimis/receive", async (req, res) => {
  const valid = verifySignature(req);
  if (!valid) return res.status(401).end();

  const { type, data } = req.body;
  // handle events per your integration
  await handleEvent(type, data);
  res.status(200).end();
}); 

Quickstart

Get started in 4 steps.

Open quickstart guide

Request sandbox access

Tell us about your integration and receive a tenant alias plus client credentials.

Authenticate

Exchange your client_id + secret for a bearer token via OAuth 2.0 client credentials flow.

Make your first call

Hit GET /v1/matters to see the seeded test data, then create your own entities and matters.

Subscribe to webhooks

Register an HTTPS receiver to be notified whenever matters, invoices, or postings change.