REA Network Protocol, PCAP & API Schema Recovery Skill

Scope & Authorization

Covers all first-party protocol interoperability, packet capture dissection, Protobuf/gRPC descriptor extraction, and API schema reconstruction tasks (including Category 6 of the 500+ REA Prompt Vault and any custom network protocol task).

Execution Pipeline

1. Packet & Frame Dissection:
   • Use REA MCP tools: inspect_pcap_client, inspect_pcap_capture, inspect_packet_capture, inspect_packet_fields, inspect_web_network_capture, and compare_web_captures.
   • Identify frame headers, magic bytes, endianness, length prefixes, sequence numbers, opcodes, and checksum/CRC algorithms.
2. Schema & State Machine Reconstruction:
   • For Protobuf/gRPC: extract embedded FileDescriptorProto blobs from binaries or decode raw wire tags (varint, length-delimited, fixed32/64) to reconstruct valid .proto v2/v3 definitions.
   • For REST/GraphQL/WebSockets: generate OpenAPI 3.1 (openapi.yaml), GraphQL SDL (schema.graphql), or AsyncAPI specifications.
3. Working SDK & Test Suite Generation:
   • Reconstruct a complete, zero-skeleton client and/or mock server library in the user's target language (Rust, Go, TypeScript, Python, C#, or C++) with automated unit tests validating packet serialization and deserialization.