A2UI
Is A2UI safe? Promising trust profile, but some evidence still deserves review.
Compare A2UI
How does it stack up against its Protocols & Tool Integration neighbours?
Pick any agent to compare →In detail: A2UI scores 63.6/100 (Grade C), ranked #569 of 1378 tracked open-source AI agent projects, on evidence coverage C (2 of 5 independent signal types). The public evidence: no package-provenance attestation found; OSSF Scorecard rates its supply-chain practices 5.8/10; 100% of recent commits are signed; last pushed 2026-10-21. Every point is earned from checkable signals — never paid placement. How scoring works →
How A2UI could raise its score
Each line changes one public signal and recomputes with the live scoring function. The gains don't add up exactly, because the score is capped near the top.
- Raise the OSSF Scorecard from 5.8 to 9.0lowest checks: CII-Best-Practices 0, Fuzzing 0, SAST 0 +6.7 → 70.3 B · #18 of 63
Chain of custody
Scanners check what the code says. This traces who ships A2UI and whether that has changed: from the source repository, through how changes are reviewed and released, to the code you run. These are the checks for OWASP ASI04 Agentic Supply Chain Vulnerabilities.
-
Source Signed
github.com/a2ui-project/a2ui, Apache-2.0, last pushed 2026-10-21. 100% of the last 100 commits carry a verified signature, so changes trace to a verified account.
-
Review and release Mixed
OpenSSF Scorecard rates the repository's practices 5.8/10 (scanned Oct 18, 2026). The checks that decide who can get a change released:
- Code Review10
- Branch Protection4
- Signed Releases0
- Dangerous Workflow10
- Token Permissions8
- Pinned Dependencies7
All 18 Scorecard checks
Binary-Artifacts 7Branch-Protection 4CI-Tests 10CII-Best-Practices 0Code-Review 10Contributors 10Dangerous-Workflow 10Dependency-Update-Tool 10Fuzzing 0License 10Maintained 10Packaging -1Pinned-Dependencies 7SAST 0Security-Policy 0Signed-Releases 0Token-Permissions 8Vulnerabilities 0 -
Published packages None
No registry package. A2UI is used from its repository, so what you run is whatever you check out: pin a release tag or commit.
Changes to this chain
- 2026-08-07 OSSF Scorecard: 5.8/10
Evidence behind this score
Coverage C: 2 of 5 independent evidence types found.
- GitHub repository data
- Package downloads (missing)
- Supply-chain checks
- Public actions (missing)
- Community mentions (missing)
Verify this score yourself
Every build re-issues A2UI’s score as an Ed25519-signed credential, valid for 7 days. You can check it offline against HVTracker’s published key; if anyone changes a number after signing, verification fails.
What this score doesn’t check
It covers who ships the code, not what the code does. It doesn’t read tool descriptions or prompts for injected instructions, watch runtime behaviour, or find bugs nobody has disclosed yet. For that, run a content scanner before you connect it, such as Cisco MCP Scanner or Snyk Agent Scan.
How A2UI compares in Protocols & Tool Integration
- #32 MCP C# SDK 64.6 +1.0
- #33 CodeGraph 63.7 +0.1
- #34 A2UI 63.6 this agent
- #35 MCP Client for Ollama 63.0 −0.6
- #36 MCP Java SDK 62.9 −0.7
Bars show each HVTrust score; the tick marks A2UI’s 63.6.
Where the 63.6 comes from
HVTrust dimensions vs the Protocols & Tool Integration average
63.6 / 100 · 100.0% confidenceA2UI Protocols & Tool Integration average (63 agents)
Quick Trust Read
How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption. Grade C reflects the trust score band: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Evidence coverage C is separate — it grades how many independent signal types back the score (2 of 5), so a high score on thin evidence stays visible. Full methodology →
Rank Trend
Activity & Reach
Analysis
Activity Inputs
89.8 / 100Common questions about A2UI
Does A2UI publish package provenance?
Does A2UI have an OpenSSF Scorecard?
Is A2UI actively maintained?
What license does A2UI use?
Are A2UI's commits signed?
Not a safety endorsement. HVTracker describes what public signals show, not whether a project is safe for your use case. Run your own security review before adopting in production.
AI agent surface
MCP, providers, tool surface
These runtime-trust fields — detected from public repo docs and manifests — contribute a bounded adjustment to this project's HVTrust score alongside supply-chain evidence. The exact values each field can add or subtract are documented in the methodology → Compare this surface across every listed agent in the capability matrix →
- browser
- MCP signal live
- External deps live
- Tool / plugin surface live
- Package provenance drift live
Detected changes to A2UI's runtime surface and supply-chain posture, from daily public-signal snapshots. A change here means our detectors see something different — a genuinely changed capability, or better evidence of an existing one.
Maintain A2UI?
For maintainers
HVTrust scores A2UI from public signals only — we never contact maintainers first. If a signal is wrong, stale, or missing (provenance you publish, a Scorecard you run, signed releases), tell us and we'll review it. Corrections are public and tracked on GitHub.
Reputation Timeline
Signal history
Embed Badge Badge guide for maintainers →
For maintainers
[](https://hvtracker.net/agents/a2ui)
<a href="https://hvtracker.net/agents/a2ui"><img src="https://hvtracker.net/badge/a2ui.svg" alt="HVTrust"></a>
Other agents in Protocols & Tool Integration
GitHub REST API (repo, commits, stars, forks, license) · OpenSSF Scorecard CLI
Each agent's signals refresh once daily across 6 staggered batches. Methodology v4.4 · Raw JSON