Elorus for AI agents
Elorus is online invoicing and time-tracking software for freelancers and small businesses to manage billing and client finances without needing a full accounting department. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.
What agents do in Elorus.
Create and email an invoice
Create an invoice for a client and email it once the amount and line items are confirmed.
Check outstanding invoices
List invoices to see which ones are still unpaid before a collections follow-up.
Read-only contact lookups
Get a contact's billing details as a read-only check before generating a new invoice.
13 Elorus actions, graded by risk.
Every Elorus action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.
read
9Look things up. Allowed by default.
- elorus.get_billsGet Bills
- elorus.get_taxesGet Taxes
- elorus.get_contactsGet Contacts
- elorus.get_invoicesGet Invoices
- elorus.get_productsGet Products
- elorus.get_estimatesGet Estimates
- elorus.get_templatesGet Templates
- elorus.get_credit_notesGet Credit Notes
- elorus.get_email_templatesGet Email Templates
write
4Create and change things. Allow, or ask the user first.
- elorus.create_invoiceCreate Invoice
- elorus.create_productCREATE_PRODUCT
- elorus.update_contactUpdate Contact
- elorus.email_invoiceEmail Invoice
destructive
0Delete, cancel or archive. Ask first, or deny outright.
- No destructive actions.
Elorus in three steps.
- 01Your users connect ElorusThey add their Elorus api key on Arc0 Connect, under your brand. It goes straight into the vault.
- 02You set the rulesReads run, and writes like “create Invoice” can wait for the user to approve.
- 03Any agent can actYour agent calls Elorus through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
await arc0.policies.set('elorus', { read: 'allow', write: 'ask', // create_invoice destructive: 'deny', }) # Claude Code: the same connection, one URL $ claude mcp add --transport http arc0 \ https://mcp.arc0.ai/u/u_8f2
How Elorus connects.
Users add their Elorus api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.
The same Elorus connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →
- AUTH
- API key
- CREDENTIALS
- Per-tenant encrypted vault
- MODEL SEES
- Results only, never credentials
- AUDIT LOG
- Every call, on every plan
Use Elorus from any agent.
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Elorus and Arc0, answered.
Can I use Elorus with Claude, ChatGPT or Cursor?
Yes. Connect Elorus to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Elorus actions you allow.
How do users connect Elorus?
Users add their Elorus api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.
Which Elorus actions can my agent take?
13 in total: 9 read, 4 write and 0 destructive, such as “create Invoice”. Your policies decide which of them each agent may call.
Can I make my agent read-only in Elorus?
Yes. Allow read actions and deny writes in the Elorus policy. Your agent can still look things up, and any write it attempts is blocked and logged.
Can my own backend call Elorus too?
Yes. The same Elorus connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.
Plug Elorus into your agent.
Your users connect Elorus once, under your brand. Your agent gets 13 actions behind your policies, with every call on the record.
Free to build · MCP + REST · Audit log on every plan