Changelog

All notable changes to the Acquisition Atlas API.

v2.1.0 — 2026-03-12

MCP Server — 94 tools (was 66)

Major expansion adding deal pipeline, calendar, agent management, document/image uploads, and CSV import. Published to npm as @acqatlas-tools/mcp-server.

New Tool Areas (28 new tools)

• Deal Pipeline (17 tools) — Full deal lifecycle from lead to close: CRUD, pipeline stages, tags, notes, activities, follow-ups, buyer matching, document uploads, property images
• Calendar (5 tools) — Unified follow-up calendar across buyers and deals: view, create, complete, reschedule, delete
• Agents (2 tools) — List agent/broker contacts and manage their buyer profiles
• Buyer Documents (1 tool) — Upload, list, and delete documents attached to buyers (PDF, Office, CSV, images). Uses presigned S3 URLs
• Buyer Images (1 tool) — Upload or set buyer profile images (S3 upload or external URLs like unavatar.io)
• Buyer Import (1 tool) — Import buyers from CSV data with field mapping, duplicate detection, tag assignment. Max 5,000 rows
• Buyer Follow-ups (1 tool) — List pending, complete, reschedule, or delete follow-ups on buyer contacts

Enhanced

• Buyer CRM tools expanded from 13 to 17 (added documents, images, import, follow-ups)
• Package renamed from @acqatlas/mcp-server to @acqatlas-tools/mcp-server and published to npm

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v2.0.0 — 2026-03-03

MCP Server — 66 tools (was 20)

Major expansion of the MCP server from 20 to 66 tools across 10 feature areas. AI bots (Claude Desktop, Cursor, Claude Code) can now access ~80% of platform functionality through natural language.

New Tool Areas (46 new tools)

• Saved Lists (12 tools) — Full CRUD for lead lists, add/remove leads, duplicate, active list management
• Deal Alerts (4 tools) — Create/update deal alerts with filter criteria and notification frequency
• Lien Preferences (5 tools) — Favorite, archive, and track deal status on properties
• Enriched Lien Details (3 tools) — Full property data, comparable sales, and related properties direct from database
• Teams (6 tools) — Create teams, share lists with teams, view team members
• Sharing (3 tools) — Generate shareable links for properties and lists with view analytics
• Notifications (4 tools) — Get/count/mark-read notification management
• Entity Search (6 tools) — Search business entities, view history, manage saved searches
• Profile (2 tools) — View user profile and AI-learned investment preferences
• Buyer Export (1 tool) — Export buyer contacts as structured JSON

Enhanced

• Buyer CRM tools expanded from 12 to 13 (added export_buyers)

v1.1.0 — 2026-02-25

Breaking Changes (field names)

• All attom_* field names renamed to clean camelCase equivalents (e.g., attom_avm_value → estimatedValue)
• Core lien* fields renamed to filing* (e.g., lienAmount → filingAmount, lienType → filingType)
• property_type renamed to propertyClassification
• See Field Reference for the complete mapping

New

• /v1/filings endpoints added as primary paths (replaces /v1/liens)
• New query parameters: filing_type, filing_types, has_property_data
• Old /v1/liens paths and old query parameter names (lien_type, lien_types, has_attom_data) continue to work for backwards compatibility

v1.0.0 — 2026-02-25

Initial public release of the Acquisition Atlas REST API.

Endpoints

• GET /v1/filings — List and filter public filing records with pagination
• GET /v1/filings/{id} — Get a single filing's full details
• GET /v1/filings/search — Full-text search across filings
• GET /v1/stats — Aggregate statistics
• GET /v1/stats/counties — Per-county statistics
• GET /v1/counties — List available counties
• GET /v1/counties/{county}/date-ranges — Date ranges by county
• GET /v1/counties/{county}/months — Available months by county

Features

• API key authentication via X-API-Key header
• Three subscription tiers: Free, Pro, Enterprise
• Tier-based field filtering (core, enriched property data, skip trace)
• Rate limiting with daily quotas and per-second burst limits
• Standard JSON response envelope with pagination
• Rate limit headers on every response