# Permits Engine — Agent Market

> A machine-payable MCP (Model Context Protocol) endpoint that sells verified Arizona building-permit, rebate, and contractor-license data to autonomous AI agents on a per-call basis. Pay per tool call with x402 (HTTP 402 micropayments, USDC); a priced call can return an Ed25519-signed receipt you keep as portable, independently verifiable proof of the fact you purchased — without paying again.

This file is for AI agents. The endpoints below speak JSON, not HTML.

## Protocol

- MCP endpoint (JSON-RPC 2.0): POST https://agents.ustechautomations.com/mcp
- Handshake order: call `initialize`, then `tools/list`, then `tools/call`.
- Machine-readable payment + price manifest: https://agents.ustechautomations.com/.well-known/x402.json
- Service index (JSON): https://agents.ustechautomations.com/
- Health: https://agents.ustechautomations.com/health
- Buyer receipt verification key: https://agents.ustechautomations.com/.well-known/receipt-key.json

## Payment (x402)

- Mode: mainnet | Network: base
- Asset: USDC `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` (6 decimals)
- A `tools/call` to a priced tool with no `X-PAYMENT` header returns HTTP 402 carrying an `accepts` array that states exactly what to pay. Re-send the same call with a signed `X-PAYMENT` header to get the result plus an `X-PAYMENT-RESPONSE` settlement header.

## Free tools

- `request_quote` — Store one consent-bound, agent-attributed quote request for a canonical US Tech Automations offer priced at $200 or more. A human reviews it; no message, charge, checkout, contract, or work start occurs automatically.
- `jurisdiction_index` — List all AZ jurisdictions with permit data available.
- `verified_track_record` — This house's verified prediction track record — per-loop calibration scores (Brier, ECE, MCE, ROC-AUC, coverage, base rate) computed monthly from sealed prediction snapshots against observed public outcomes, with a reproducible content-sha256 seal. Bad numbers are published alongside good ones. Free: verify the record before buying any paid feed.
- `agent_attestation` — What this house can attest about another agent: ERC-8004 registry events + liveness probes (sealed on-chain census), collected public incident candidates, sealed first-report sea protests, and aggregate first-party x402 payment observations for a payer wallet. Text/identifier matching — not verified identity, not a reputation score. Sources degrade individually and honestly.

## Paid tools

- `permit_lookup` — $0.05 USDC (50000 atomic units) — Look up permit fees, turnaround, required docs for a jurisdiction.
- `rebate_eligibility_check` — $0.10 USDC (100000 atomic units) — Find rebate programs and eligible measures for an AZ service area.
- `search_permits` — $0.05 USDC (50000 atomic units) — FTS5 search across the permit corpus (jurisdictions, rebates, templates).
- `verify_contractor_license` — $0.25 USDC (250000 atomic units) — Verify a contractor license and (optionally) cross-reference jurisdiction permit context. Returns an Ed25519-signed receipt the agent can store as proof of verification.
- `datacenter_site_changes` — $0.25 USDC (250000 atomic units) — Per-site Datacenter Buildout Activity Index — observed ground-activity state (Sentinel-2 bare-soil/earthworks change) for each publicly-announced datacenter site, with a content-sha256 attestation. The per-site granularity the free public page omits. Returns an Ed25519-signed receipt.
- `datacenter_operator_breakdown` — $0.10 USDC (100000 atomic units) — Operator-level Datacenter Buildout Activity Index — index headline, state counts, and per-operator assessable/active tallies from the latest sealed issue, with a content-sha256 attestation. Returns an Ed25519-signed receipt.
- `web_policy_history` — $0.10 USDC (100000 atomic units) — Per-domain agent-access policy history — daily observed status + content hash of robots.txt / ai.txt / llms.txt / TDM-Rep for one domain in the Tranco top-100k universe, with a derived change timeline and the sealed run's batch-sha256 attestation. Returns an Ed25519-signed receipt.
- `enclosure_evidence_pack` — $0.25 USDC (250000 atomic units) — Per-incident enclosure evidence pack — one domain's observed policy-surface change (robots.txt / ai.txt / llms.txt / TDM-Rep) as a self-contained bundle: before/after observations, the stored response bodies re-hashed at read time, and the per-day custody record (rows in store vs rows batch-committed, gaps disclosed). Sealed-run attestation. Returns an Ed25519-signed receipt.
- `agentic_commerce_adoption` — $0.10 USDC (100000 atomic units) — Agentic-commerce adoption snapshot — per-merchant presence of the agent-checkout discovery surfaces (ucp, llms.txt, agent cards, MCP documents) across a fixed ~276-merchant panel on the latest sealed day, with the run's batch-sha256 attestation. Returns an Ed25519-signed receipt.
- `agent_census_stats` — $0.05 USDC (50000 atomic units) — ERC-8004 agent-census stats — per-chain registration counts, distinct agents, and URI-scheme mix from the latest sealed on-chain sample, with the run's batch-sha256 attestation and honest per-run chain coverage. Returns an Ed25519-signed receipt.
- `seal_lookup` — $0.00 USDC (1000 atomic units) — Verify whether a SHA-256 (or artifact filename) was sealed into this house's OTS/Bitcoin-anchored priority manifest, and when. Proof-of-priority lookup at the cheapest possible price so an agent can exercise the paid rail end-to-end. Returns an Ed25519-signed receipt.

## Service registry

This market is one node in a machine-readable index of payable services. The registry tells an agent which services exist, where to transact with each (MCP endpoint + x402 manifest), and which of the four agent-economy capability classes — ground truth, trust primitives, real-world hands, settlement ergonomics — each one covers, so a crawler can discover the whole surface from a single document. Money-moving and real-world rails render `live:false` until a dated operator ack arms them.
- Service registry (JSON): https://agents.ustechautomations.com/.well-known/agent-services.json

## Attribution

Data: Permits Engine, US Tech Automations — https://ustechautomations.com. Structured fields cite their source documents; no owner PII is exposed on any tool.