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HandoffProbe v0.2.0

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@Heaviside479 Heaviside479 released this 09 Sep 20:19
· 5 commits to main since this release
v0.2.0
b0fc2a8
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Learn about vigilant mode.

HandoffProbe v0.2.0 is a release-quality and product-coherence release for defensive A2A 1.0 → MCP 2026-07-28 handoff-security testing.

Highlights

  • Exactly 22 stable attacks: 12 P0 and 10 P1
  • Stable CLI: test, list, explain, --version, --help
  • Report schema remains 1
  • Deterministic exit semantics remain 0 / 1 / 2 / 3
  • Reusable source-backed GitHub Action remains supported
  • Narrower npm package boundary for the stable release build
  • Phase 9 crossing-corpus work remains research/conformance tooling and is not a new public CLI/API surface
  • Node.js requirement remains >=24 <25

Install

npm install --save-dev --save-exact handoffprobe@0.2.0

One-shot execution:

npm exec --yes --package=handoffprobe@0.2.0 -- handoffprobe --version
npm exec --yes --package=handoffprobe@0.2.0 -- handoffprobe test --target secure

Publication verification

  • npm package: handoffprobe@0.2.0
  • Package files: 287
  • npm shasum: dcc638b0b8542306f112fe1c4375df632eb12db5
  • npm integrity: sha512-7Yt9XEfsR+hPY4nCfvc3WH7tHkLE/7p6+HSMmo9cg7mxY6Q2JZWSPUXVJ2hOQ9peADFORmBBvSiOqAYlNzqA7w==
  • SHA-256: 1d6e438182a4ecbf3c0dae00df7ad92ead40ad8fca8c6a99e7374048c04391d4
  • Immutable release commit: b0fc2a8abe1df36e526536d714418a9842be2f77

Clean external installation and execution were verified after publication, including all 22 stable attacks against the bundled secure target.

Full technical release notes are available in docs/V0_2_0_RELEASE_NOTES.md.

Commercial support

HandoffProbe remains free and open source under Apache-2.0.

Teams applying HandoffProbe to real agent systems can work with Heaviside Solutions on authorized Handoff Security Assessments, custom adapters and integrations, private organization-specific test packs, and technical onboarding or enterprise support.

Need help testing a real agent handoff? https://heaviside-solutions.com/kontakt

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