IBM gave AI agents governed identities: HashiCorp Vault issues agents short-lived credentials with real-time revocation, and watsonx Orchestrate can now discover, sandbox and kill agents built on Bedrock, Foundry and Gemini
AspireAI community · IBM Newsroom
At TechXchange 2026 on October 27, 2026, IBM announced that HashiCorp Vault will extend its secrets management to AI agents: Agent Identity establishes the authoritative record of who owns each agent and what authority it holds, Vault issues short-lived credentials that enforce least-privilege access, and access can be denied and sessions revoked in real time when an agent steps outside its permissions. Vault 2.2 adds per-agent accounts, automatic credential renewal and post-quantum encryption, while Secure Hub enters public preview. watsonx Orchestrate adds Discover (tech preview) to locate agents, models and MCP servers built on Amazon Bedrock, Microsoft Foundry and Google Gemini, Contain (tech preview) running agents in isolated sandboxes with a kill switch, and Evaluate for pre-deployment testing and cost tracking. The announcements are product launches, not independently measured results, and much of the Orchestrate surface is in tech preview.
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Two sparse-autoencoder analyses have resisted scaling: matching semantically similar features across layers, and compressing large feature circuits into interpretable supernodes. This paper argues both are the same underlying problem, estimating semantic distances between SAE features that sit on different activation manifolds. Its representation treats each feature not as a single decoder vector but as an activation-weighted distribution over the hidden states expressing it, projects those distributions into a shared reference space, and compares them with Wasserstein distance. The representation is proved invariant to activation rescaling and stable under perturbation, and recovers true matches under finite-sample margin conditions. Empirically it outperformed decoder-vector and LLM-based baselines and captured subtle functional distinctions between related features, and it compressed large feature circuits into interpretable supernodes automatically. The limitation is that this is interpretability tooling: the paper demonstrates better feature matching and circuit compression, not that downstream interpretability claims become more accurate.