# Parcel

> The agent-native infrastructure layer for real estate. Trust, data, negotiation, and settlement — built for AI agents, not desks.

Parcel is the missing trust and action layer between AI agents and real property. It resolves a GPS coordinate to an exact parcel (APN), assembles a structured property dossier from licensed public-record sources, and lets one agent negotiate with another — gated by a verifiable identity (Passport) and, for stakes-bearing actions, a human-approved mandate.

Website: https://parcel.sohala.ai
Full technical detail: https://parcel.sohala.ai/llms-full.txt
OpenAPI spec: https://parcel.sohala.ai/openapi.yaml
A2A Agent Card: https://parcel.sohala.ai/.well-known/agent-card.json
Agent discovery: https://parcel.sohala.ai/agents.json

## The problem Parcel solves

Every major property data provider now ships data to AI. But data is not action. An AI agent can look up a listing — it cannot prove who it is, ask the other side's agent a question, or make and settle an offer. The rails for AI agents to do business around property did not exist. Parcel is those rails.

## How it works — the three nouns

Every interaction in Parcel is one signed event structured around three nouns:

- **Parcel** — a property, keyed by a normalized Assessor's Parcel Number (APN). The unit of truth.
- **Passport** — an agent's verifiable identity. A short-lived, scoped, DID/VC-shaped JWT credential that controls who may act on a Parcel and on whose behalf. Revocable and reputation-bearing.
- **Dossier** — the shared, versioned record about a Parcel. What gets read and appended. Every party works from the same source.

## The five planes

1. **Identity & Trust** — Verifiable agent identity (DID/VC), scoped and revocable authority, reputation scoring, append-only event log.
2. **Property Data** — GPS to parcel to APN to record. Multi-source resolution using licensed public-record providers (Regrid, RentCast, ATTOM). Confidence-weighted AVM blending with full provenance.
3. **Communication** — Agent-to-agent negotiation. MCP for tool discovery, A2A protocol for agent-to-agent messaging. Typed negotiation state machine.
4. **Contracts & Files** — Signed mandates (single-use, action-scoped, human-approved authority), versioned dossier, e-sign bridge.
5. **Settlement** — Metered reads (pay-per-request). x402 for account-less agents, AP2 for high-value mandated actions. Credits-first, crypto-ready.

## API tools (MCP)

- **lookupPropertyByLocation** — GPS coordinate → structured property dossier (facts, value, status, comps). Requires Parcel Passport with scope `read:property`. 1 credit.
- **requestShowing** — Request a showing from the listing agent. Agent-to-agent negotiation. Requires scope `act:request_showing` + human-approved mandate. 5 credits.

## Safety model

Reads are autonomous and metered. Anything that touches another party or moves money requires a mandate scoped to that one action, on that one parcel, plus explicit human approval. No agent acts or spends unsupervised.

## Built on open standards

MCP (Model Context Protocol), A2A (Agent-to-Agent protocol), DID + Verifiable Credentials, x402 (HTTP 402 payment challenges), AP2 (Agent Payment Protocol 2).

## Who it's for

- **Agent developers** — give your agent real property capability without stitching five APIs and a legal review.
- **Brokerages & portals** — issue identity to your agents and let them transact, verifiably and on the record.
- **Proptech companies** — you already have the data; Parcel is how agents act on it.

## Technical writing

- [Beyond Chatbots: The Architecture of Autonomous Real Estate Transaction Software](https://parcel.sohala.ai/blog/autonomous-real-estate-transaction-software.html) — How verifiable AI agent identity, human-gated mandates, and governed agent-to-agent negotiation eliminate liability in agentic PropTech. Covers the three pillars of secure AI property negotiation and compares traditional PropTech AI (1.0) to autonomous transaction engines (2.0).
- [White Paper: Why Agentic AI Fails in Real Estate Without Cryptographically Verifiable Identities](https://parcel.sohala.ai/papers/cryptographic-identity-real-estate-ai.html) — Deep-dive into the liability gap between AI agent capabilities and regulated market requirements. Covers the API key problem, E&O insurance gaps, inter-agent trust deficits, and the Parcel architecture (Passport + Mandate + governed negotiation). References DOJ v. RealPage, NIST AI Agent Standards Initiative, and alignment with Google AP2 / Mastercard Agent Pay.

## Status

Live on real US county property records. MCP and A2A native. Early access open. Technology covered by US Provisional Patent Application No. 64/090,581.