RepoPilot

Cysharp/MemoryPack

Zero encoding extreme performance binary serializer for C# and Unity.

Healthy

Strong maintenance signals

MixedDependency

dependency CVE scan unavailable

HealthyFork & modify

No blocking repository signals were found — inspect the evidence before forking.

HealthyLearn from

Documented and popular — useful reference codebase to read through.

MixedDeploy as-is

Scorecard "Branch-Protection" is 0/10; dependency CVE scan unavailable

  • ⚠Scorecard: default branch unprotected (0/10)
  • ✓Last commit 8w ago
  • ✓12 active contributors
  • ✓Distributed ownership (top contributor 45% of recent commits)
  • ✓MIT licensed
  • ✓CI configured
  • ✓Tests present

Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against OpenSSF Scorecard

Informational only. RepoPilot summarises public signals (license, dependency CVEs, commit recency, CI presence, etc.) at the time of analysis. Signals can be incomplete or stale. Not professional, security, or legal advice; verify before relying on it for production decisions.

Repository brief

Repo brief: Cysharp/MemoryPack

Generated by RepoPilot · document generated 2026-09-17 · concise human review Evidence snapshot · analyzed 2026-09-17T02:20:52.169Z · commit 85ab9ad76c38

Verdict

Healthy — Strong maintenance signals

  • Last commit 8w ago
  • 12 active contributors
  • Distributed ownership (top contributor 45% of recent commits)
  • MIT licensed
  • 2 more receipts on the live page

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against OpenSSF Scorecard

What it is

MemoryPack is a high-performance binary serializer for C# and Unity that uses zero-encoding (direct memory copying rather than tag/varint encoding) to achieve 10–200× speed improvements over alternatives like protobuf-net and MessagePack for C#. It generates serialization code via .NET Incremental Source Generators (no IL.Emit), supports modern I/O patterns (IBufferWriter<byte>, ReadOnlySpan<byte>), and targets both .NET Standard 2.1+ and Unity IL2CPP with AOT-friendly output. Modular architecture: src/MemoryPack.Core contains the serialization engine, formatter implementations (CollectionFormatters, MultiDimensionalArrayFormatters, etc.), compression codecs (Brotli, BitPack), and…

Start here

Read these in order:

  • sandbox/SandboxWebApp/wwwroot/js/memorypack/MemoryPackWriter.js — Foundation: doesn't import anything internally and is imported by 29 other files. Read first to learn the vocabulary.
  • sandbox/SandboxWebApp/wwwroot/js/memorypack/MemoryPackReader.js — Foundation: imported by 29, no internal dependencies of its own.
  • sandbox/SandboxWebApp/wwwroot/js/memorypack/NestedObject.js — Built on the foundation; imported by 6 downstream files.
  • sandbox/SandboxWebApp/wwwroot/js/memorypack/SampleUnion1.js — Built on the foundation; imported by 4 downstream files.
  • sandbox/SandboxWebApp/wwwroot/js/memorypack/IMogeUnion.js — Layer 2 — composes lower-level code into reusable abstractions (imported 7×).

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

Clone: git clone https://github.com/Cysharp/MemoryPack.git && cd MemoryPack. No Makefile or npm package.json at root visible; infer dotnet-based project: `dotnet restore && dotnet build src/MemoryPack.Core/MemoryPack.…

Daily commands:

No dev server; this is a library. Build: dotnet build from root (infer from .csproj structure). Unit tests: dotnet test (test project not listed—verify in actual repo). For library consumers: reference NuGet package…

…shortened for this brief.

Key cautions & unknowns

  • Scorecard: default branch unprotected (0/10)
  • Source Generator discovery: relies on .NET Incremental Source Generator (build-time code gen)—must use compatible .NET SDK (7+) and may require dotnet build (not just dotnet restore). Unity IL2CPP: requires…
  • Published-advisory coverage was unavailable for the captured dependencies.
  • Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

Evidence note

Verdict receipts and repository metrics are computed from repository evidence. Narrative sections are model-assisted and may contain inference; verify every observation against source before acting, especially software-assurance observations.

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