Viiyoo in your systems and assistants.

A versioned REST API and a Model Context Protocol server, so your own systems and the AI assistants your team already uses work from Viiyoo's figures, under the same rules as the product.

Talk to us about access What's available

For AI agents & developers

Works with your agents.

Viiyoo speaks the Model Context Protocol. Connect the AI assistant your team already uses and it can resolve properties, run rent and portfolio assessments, read market trends, manage scouts, and read decisions, scenarios and the watch feed, all from Viiyoo's figures.

More than 40 tools over MCP, plus a versioned REST API with an OpenAPI contract, idempotent writes, bulk exports and a change feed.
Figures checked before they reach you. An agent's draft is checked number by number against Viiyoo's results, and agents are told to quote figures, never recompute them.
You stay in control. Scoped keys with quotas and expiry, per-key activity, alerts on runaway use, one-click "pause all access", and connections a person approves.
Safe by design. Text from your own files is treated as data, never as instructions to the agent.

your assistant · connected to Viiyoo

you › Did any of my scouts find something new today?

→ viiyoo.list_changes(since: "yesterday")
→ viiyoo.get_latest_scan(scout: "W13 & W7 flats")

assistant › Two new matches and one price cut.
The strongest is a 2-bed flat in W13 at
6.1% net, 7% below recent nearby sales.

→ viiyoo.check_figures(draft)
✓ 3 of 3 figures confirmed

Illustrative. Available to early-access teams.

What's available

The platform, as an API.

Available to early-access teams through scoped API keys or connections a person approves.

Properties and rents

Resolve an address to one home, run rent assessments and read their evidence.

Portfolios

Create portfolios, add rows, resolve them, run assessments and read the results.

Buy boxes and scouts

Propose and create buy boxes, run scans, set scouts and give feedback.

Market and areas

Regions and areas, market trends, rental comparables, area indices and requirement tests.

Decisions and scenarios

Read decisions, scenarios and the watch feed, and draft decisions. Signing off stays with people.

Exports and change feed

Bulk exports as CSV or JSON Lines, and a change feed with a cursor.

Built in

Guardrails, not afterthoughts.

Figures checked

Agents quote Viiyoo's figures and never recompute them; a draft can be checked number by number.

Data, not instructions

Text from your own files is treated as data, never as instructions to the agent.

Keys you control

Scoped keys kept only as hashes, with expiry, daily quotas, per-key activity, runaway alerts and one-click pause.

Connections a person approves

OAuth 2.1 with PKCE: a person sees the application and approves what it may do.

A frozen contract

An OpenAPI 3.1 contract held by tests, and idempotency keys on every write.

No sign-off by machine

No route, key or agent can submit or sign off a decision.

Building on Viiyoo?

Tell us what you want to connect and we'll set up access.

Talk to us