MCP

Your customers' agents connect to leaseclock.com/mcp and get three tools: search, fetch and do. do runs any Verb, so a new Verb reaches every connected agent without a new tool.

In shortCopy link to this section

{  "verb": "Lease.renew",  "id": "4b",  "input": { "endsOn": "2027-11-30" }}

• Address: https://leaseclock.com/mcp, over streamable HTTP. It goes live with your product, with nothing to set up.
• Sign-in: the agent's app opens Leaseclock's own sign-in page. Scripts send a Leaseclock token instead.
• Tools: search finds records, fetch reads one in full, and do runs a Verb.
• Permissions: an agent works as the person who connected it, in that person's workspace, with that person's role.
• Brand: the server is named leaseclock, and nothing an agent reads mentions SaaS.Dev.

A renewal from ClaudeCopy link to this section

Priya Shah is the leasing coordinator at Northgate Rentals, one of Leaseclock's customers. She has connected Claude to Leaseclock and asks it:

Renew Dana Whitfield's lease in 4B through November 30, 2027.

Claude finds the lease with search:

{ "query": "Dana Whitfield 4B" }

{
  "results": [
    {
      "id": "leases/4b",
      "title": "Lease 4B · dana.whitfield@example.com · ends 2026-11-30",
      "url": "https://leaseclock.com/app/leases/4b"
    }
  ]
}

Then it renews the lease with do:

{
  "verb": "Lease.renew",
  "id": "4b",
  "input": { "endsOn": "2027-11-30" }
}

{
  "id": "leases/4b",
  "$type": "Lease",
  "unit": "4b",
  "renter": "dana.whitfield@example.com",
  "endsOn": "2027-11-30",
  "status": "active",
  "renewedBy": "priya@northgaterentals.com",
  "url": "https://leaseclock.com/app/leases/4b"
}

The renewal appears in Lease 4B's history in the app, under Priya's name, and anyone on her team with the right role can undo it there. Connect your own agent to leaseclock.com and try it.

Connect an agentCopy link to this section

Any MCP client that speaks streamable HTTP connects with the one address.

https://leaseclock.com/mcp

Sign inCopy link to this section

The first tool call opens Leaseclock's sign-in page, in Leaseclock's teal. Priya signs in with her Northgate Rentals account and approves Claude. From then on Claude sees Northgate's records and nobody else's, and it can run only the Verbs her role allows.

Each connected agent is listed in the app under Settings → Connected agents, where Priya or a Northgate admin can disconnect it.

Connect with a tokenCopy link to this section

An agent that runs without a person, such as a nightly script or a CI job, sends a Leaseclock token in place of signing in. Create one in the app under Settings → API keys and keep it in the environment:

claude mcp add --transport http leaseclock https://leaseclock.com/mcp \
  --header "Authorization: Bearer $LEASECLOCK_TOKEN"

A token carries the role it was created with. A Test token reaches the Test copy of the workspace, so an agent can try every Verb without touching a real lease.

The toolsCopy link to this section

searchCopy link to this section

Finds records by text, by Noun or by field. Every result carries an id that fetch and do accept, and a url to the record in the app.

{
  "type": "Lease",
  "where": { "status": "active", "endsOn": { "before": "2027-01-01" } }
}

{
  "results": [
    {
      "id": "leases/4b",
      "title": "Lease 4B · dana.whitfield@example.com · ends 2026-11-30",
      "url": "https://leaseclock.com/app/leases/4b"
    },
    {
      "id": "leases/2a",
      "title": "Lease 2A · marcus.bell@example.com · ends 2026-12-15",
      "url": "https://leaseclock.com/app/leases/2a"
    }
  ]
}

fetchCopy link to this section

Reads one record in full: its fields, its linked records and the Verbs that can run on it now.

{ "id": "leases/4b" }

{
  "id": "leases/4b",
  "title": "Lease 4B",
  "url": "https://leaseclock.com/app/leases/4b",
  "text": "Lease on Unit 4B, Alder Court. Renter dana.whitfield@example.com. Ends 2026-11-30. Status active.",
  "metadata": {
    "$type": "Lease",
    "unit": { "id": "units/4b", "label": "4B", "building": "Alder Court" },
    "renter": "dana.whitfield@example.com",
    "endsOn": "2026-11-30",
    "status": "active",
    "verbs": ["renew", "end"]
  }
}

verbs lists only what this record and this person allow. On Lease 5A, which has ended, the list is empty.

doCopy link to this section

Runs a Verb on a record. do also creates and updates records, through the create and update every Noun has.

With preview, nothing is saved:

{
  "verb": "Lease.renew",
  "id": "4b",
  "input": { "endsOn": "2027-11-30" },
  "preview": true
}

{
  "preview": true,
  "id": "leases/4b",
  "changes": { "endsOn": { "from": "2026-11-30", "to": "2027-11-30" } }
}

search and fetch are marked read-only, so agent apps run them without asking. do is marked as a write, so most agent apps ask the person to approve each call before it runs.

New Verbs reach every agentCopy link to this section

The do tool's description lists every Verb with its input, written from your definition. Add a Verb to Lease:

 verbs:
   renew:
     does: Move the end date forward
     input: { endsOn: { says: the new end date, type: date, required: true } }
     from: [active]
   end: { does: End the lease, from: [active], to: ended }
+  remind: { does: Email the renter that the lease is ending, from: [active] }

Push it, and Lease.remind is in the do tool on the next request. Connected agents get the MCP tools-changed notice and pick it up in the same conversation, so Priya can ask Claude to remind every renter whose lease ends in December.

What your definition setsCopy link to this section

Every line an agent reads comes from your files.

Write each does: line for an agent as much as for a person. It is the sentence an agent uses to decide which Verb fits the request.

ErrorsCopy link to this section

A call that cannot run returns an MCP tool error with the reason, the fix and a link to the Verb's page in Leaseclock's docs. Nothing is saved. Renewing Lease 5A, which has ended:

{
  "isError": true,
  "content": [
    {
      "type": "text",
      "text": "Lease 5A is ended, and renew runs only on an active Lease. To keep Unit 5A let, create a new Lease with Lease.create. https://leaseclock.com/docs/lease#renew"
    }
  ]
}

The agent reads the fix and tries again, or asks the person what to do. Every code is listed in Errors.

QuestionsCopy link to this section

Can I add my own tool? Add a Verb. Write its logic as the Verb's function, and do runs it with the same permissions, preview and undo as every other Verb.

Which agents work with it? Any MCP client over streamable HTTP, including Claude, ChatGPT, Claude Code, Cursor and VS Code.

Can an agent see another customer's records? No. An agent works inside the workspace of the person who connected it, and the server applies the same permissions as the app and the API.

Can an agent change something by mistake? do runs only the Verbs the person's role allows, most agent apps ask before each do call, and every change is in the record's history with an undo.

Do MCP calls count against rate limits? Yes. A connected agent shares the rate limits of the person or token it acts as, the same as calls to the API.