Obtain the applicable ACORD AL3 specification for the line of business (personal auto, homeowners, etc.) and transaction type (new business, endorsement, cancellation)
Parse the fixed-format AL3 flat file by reading the segment identifier in the first characters of each record to determine segment type
Extract field values using the positional field definitions specified in the AL3 layout for each segment type
Map parsed AL3 fields to your internal data model or agency management system schema, handling optional segments that may be absent in some carrier implementations
Validate required fields and field formats per the AL3 spec and flag records that fail validation for manual review
Produce acknowledgment or error feedback to the sending carrier in the agreed format (IVANS or bilateral file exchange)
Known gotchas
AL3 is a positional flat-file format with no delimiters between fields — off-by-one errors in field width parsing cause cascading misalignment of all downstream fields in the same segment
Carriers frequently implement AL3 as a subset of the full spec and may omit optional segments or use carrier-specific extensions; validate against the specific carrier's AL3 implementation guide, not just the base ACORD spec
Character encoding must match the carrier's output; AL3 files are typically ASCII but some carriers use extended character sets for special characters in insured names or addresses
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp