By NHI Mgmt Group Editorial TeamPublished 2025-06-25Domain: Agentic AI & NHIsSource: Venice

TL;DR: Onchain AI agents that route prompts, invoke tools, and execute multi-step actions through smart contracts shift control from off-chain APIs to verifiable blockchain workflows, according to Venice. The security question is no longer just model quality, but who can govern access, execution, and accountability when agent behaviour is embedded in onchain infrastructure.


At a glance

What this is: This is a partnership analysis showing how onchain AI agents combine model inference, tool invocation, and smart-contract execution into a permissionless workflow.

Why it matters: It matters because IAM teams now have to think about governance, accountability, and access control for AI agents that operate across blockchain, application, and identity boundaries.

👉 Read Venice's analysis of onchain AI agents and Warden Protocol


Context

Onchain AI agents are software systems that can route input, invoke tools, and carry out multi-step actions through blockchain-backed workflows. The governance problem is that once those actions are embedded in smart-contract execution, traditional platform controls like API restriction, moderation, and central approval gates no longer define the whole trust boundary.

For IAM, PAM, and NHI programmes, the important question is not whether the model is private or uncensored. It is whether an autonomous execution path can be verified, limited, and attributed when the agent is allowed to act directly across chains and applications. That changes how teams think about access, delegation, and review.

The article describes a permissionless architecture, which is typical of crypto-native infrastructure but atypical for most enterprise identity programmes. That mismatch is exactly why identity leaders should read it as a governance signal rather than a product story.


Key questions

Q: How should teams govern AI agents that can execute blockchain transactions?

A: Treat them as executing identities, not simple integrations. Teams should define the exact actions the agent may trigger, separate model access from transaction authority, and require audit evidence for each step in the flow. If the agent can route prompts, call tools, and change state, governance must cover the full execution chain, not just the model endpoint.

Q: What breaks when AI agents are allowed to act through permissionless infrastructure?

A: Centralised enforcement becomes weaker. If the system is designed to resist platform control, teams can lose a single place to revoke, pause, or inspect activity. That shifts accountability toward cryptographic proof, scoped delegation, and durable logs. Identity teams should assume the control plane is distributed and design governance accordingly.

Q: Why do onchain AI agents expand identity risk beyond normal application access?

A: Because the agent can combine reasoning, tool selection, and execution in one runtime path. That creates a larger effective privilege surface than a traditional application call, especially when one action can span multiple chains or systems. The risk is not only data access. It is uncontrolled delegation into business-changing actions.

Q: Who is accountable when an AI agent executes an onchain action incorrectly?

A: The accountable party is the organisation that granted the delegation and failed to bound it, not the blockchain itself. Practitioners should define ownership for agent policy, execution review, incident response, and revocation before deployment. If no one can explain who can stop the agent, governance is already incomplete.


Technical breakdown

Onchain inference changes the trust boundary

When AI inference is moved onchain, the trust boundary shifts from a private API relationship to a distributed execution environment. Smart contracts can call models directly, and the output becomes part of the transaction flow rather than a separate off-chain service response. That means the control plane is no longer just model access. It also includes chain-level provenance, contract permissions, and the ability to verify what was executed and when. In identity terms, the model is no longer a passive service endpoint. It becomes part of the decision path that drives state change.

Practical implication: treat onchain model access as an identity and execution problem, not only an application integration problem.

Dynamic tool invocation creates runtime privilege decisions

The article describes agents that handle input routing, tool invocation, multi-step reasoning, and image generation. That combination matters because the agent is not just calling one fixed function. It is selecting actions dynamically based on the prompt and context. In governance terms, this is where least privilege becomes harder to define at provisioning time, because the effective privilege set changes with each task. The agent may be bounded by code, but the sequence of actions is runtime-driven and therefore harder to pre-certify using static access models.

Practical implication: map each agent action path to a distinct privilege boundary before allowing broad workflow access.

Permissionless AI still needs verifiable accountability

The partnership frames censorship resistance and deplatforming resistance as advantages, but those same properties reduce the degree of central administrative control. A permissionless system can improve resilience, yet it also weakens the assumption that a platform operator can always intervene, suspend, or remediate quickly. For identity governance, this raises a familiar issue in a new form: if the system is designed to resist central control, then accountability has to be established elsewhere, through cryptographic proof, scoped delegation, and auditable execution records rather than administrative discretion.

Practical implication: require traceable delegation and immutable activity records before integrating agents into business-critical flows.


NHI Mgmt Group analysis

Onchain AI agents are an identity governance problem before they are an AI problem. The article describes agents that reason, invoke tools, and execute blockchain transactions, which means the identity subject is not just a model but an acting runtime. That moves the discussion from content control to delegated authority, execution traceability, and permission scope. For practitioners, the key conclusion is that onchain agents should be governed as executable identities, not treated as ordinary application middleware.

Permissionless infrastructure changes the control assumptions that IAM programmes rely on. Traditional governance assumes there is a central operator who can enforce restrictions, revoke access, or pause activity. The article’s architecture deliberately reduces that dependency. That means review, suspension, and containment cannot rely on a single platform control point, and identity teams need to recognise the resulting accountability shift.

Consistent access is not the same as safe access. The partnership argues that developers gain direct access to uncensored AI without platform dependence, but direct access does not reduce privilege risk. It can expand it by placing more decision-making into runtime agent behaviour. The practical implication is that teams should measure not only whether access is available, but whether the resulting action surface is bounded and attributable.

Cross-chain execution creates a broader identity blast radius. When one agent can coordinate actions across 100+ blockchains, the security question becomes how far a single delegated decision can propagate. That is a governance issue as much as an architecture issue. Practitioners should read this as a warning that agent reach can outgrow the controls originally designed for one application or one chain.

Warden-style orchestration shows why agent governance must include execution provenance. If an agent is choosing models, invoking tools, and driving state changes, then the governance record has to capture the full action chain, not just the final transaction. This is where identity governance, auditability, and runtime control converge. Teams should expect future agent programmes to require stronger proof of who or what executed each step.

From our research:

  • 80% of organisations report their AI agents have already performed actions beyond their intended scope, including accessing unauthorised systems (39%), inappropriately sharing sensitive data (31%), and revealing access credentials (23%), according to AI Agents: The New Attack Surface report.
  • Only 52% of companies can track and audit the data their AI agents access, leaving 48% with a complete blind spot for compliance and breach investigation.
  • That visibility gap is why practitioners should also read OWASP Agentic AI Top 10 for a control view of agent runtime abuse and delegated tool risk.

What this signals

Runtime governance has to move closer to the execution layer. With 80% of organisations already reporting AI agents acting beyond intended scope, the programme risk is no longer theoretical. Identity teams should prepare for workflows where the question is not whether access was granted, but whether the agent’s runtime choices stayed inside policy.

Permissionless agent design creates a new accountability pattern for security and compliance teams. If the platform cannot centrally restrain or deplatform the workflow, your own governance model must carry that burden through scoped delegation, immutable logging, and reviewable policy boundaries. The control objective becomes provable restraint, not just approved access.

The operating concept here is execution provenance: the ability to reconstruct what the agent did, which model it used, what tools it called, and which state changes followed. For teams building agent governance, provenance will matter as much as access review because it is the only way to explain delegated action after the fact.


For practitioners

  • Map delegated agent actions to explicit privilege boundaries Break each agent workflow into the exact actions it can perform, then assign separate authorization and review rules for routing, tool invocation, and transaction execution. Avoid granting broad permissions to a composite agent just because it is convenient for developers.
  • Require execution provenance for chain-linked decisions Log the prompt, model choice, tool call, and transaction outcome for each agent action so investigators can reconstruct the full path of execution. This is especially important when one decision can affect multiple blockchains or downstream applications.
  • Define containment points outside the platform operator Assume a permissionless design may limit your ability to pause activity centrally, then build alternative controls such as scoped delegation, immutable audit records, and contract-level kill paths where appropriate.
  • Separate access availability from governance approval Do not equate direct model access with acceptable operational risk. Review whether the agent can combine reasoning, tool use, and state change in a single flow that exceeds the intended business purpose.

Key takeaways

  • Onchain AI agents collapse the gap between model access and state-changing authority, so identity governance has to cover execution as well as authentication.
  • Permissionless design may reduce platform dependency, but it also reduces the places where security teams can intervene, inspect, or revoke activity centrally.
  • The practical control question is whether each delegated agent action can be bounded, logged, and attributed before it reaches a blockchain or downstream system.

Standards & Framework Alignment

This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.

OWASP Agentic AI Top 10 address the attack and risk surface, while NIST AI RMF and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.

FrameworkControl / ReferenceRelevance
OWASP Agentic AI Top 10Covers agent tool use, runtime autonomy, and delegated action risk.
NIST AI RMFUseful for governance, accountability, and lifecycle oversight of AI systems.
NIST CSF 2.0PR.AC-4Access management is central when agents can act across chains and systems.

Review agent workflows for tool misuse, scope drift, and unauthorized execution paths before production.


Key terms

  • Onchain AI Agent: An onchain AI agent is a software system that uses blockchain execution as part of its action path. It can route inputs, call tools, and trigger state changes through smart contracts, which makes the agent’s authority and audit trail part of the security model, not just the model itself.
  • Execution Provenance: Execution provenance is the record of how an automated or agentic action happened, including inputs, model choice, tool calls, and resulting state changes. In identity governance, it is what allows teams to attribute delegated behaviour after the fact and determine whether the agent stayed inside policy.
  • Permissionless Infrastructure: Permissionless infrastructure is a system design where participants can act without central approval gates or platform-controlled access restrictions. In identity terms, it can improve resilience, but it also removes centralised intervention points, so governance must shift toward scoped delegation and verifiable records.
  • Identity Blast Radius: Identity blast radius is the amount of damage one identity can cause once it has been granted authority. For onchain agents, the blast radius can expand quickly because a single runtime decision may propagate across contracts, chains, and applications before a human can intervene.

Deepen your knowledge

NHI governance, agentic AI identity, and machine identity lifecycle are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are responsible for identity security strategy or NHI governance in your organisation, it is worth exploring.

This post draws on content published by Venice: AI agents, onchain execution, and the Warden Protocol partnership. Read the original.

NHIMG Editorial Note
Published by the NHIMG editorial team on 2025-06-25.
NHI Mgmt Group — the independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org