Verify a signature against any did:web identity. Resolves the DID Document and checks the Ed25519 signature.
AI agents call identity_verify to retrieve information from Mailgent MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs signature verification by resolving a DID Document and validating an Ed25519 signature. This is a read-only cryptographic operation that retrieves data (the DID Document) and performs computation to verify a claim. No data is created, modified, deleted, or executed as code. The operation is deterministic and has no side effects beyond returning a verification result.
From the tool's definition Tool name is 'identity_verify' and description states it 'Verify a signature against any did:web identity.
Attacks that exploit this kind of access
Verify a signature against any did:web identity. Resolves the DID Document and checks the Ed25519 signature. It is categorised as a Read tool in the Mailgent MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Mailgent MCP Server MCP server in PolicyLayer and add a rule for identity_verify: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mailgent MCP Server. Nothing to install.
identity_verify is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the identity_verify rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for identity_verify. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
identity_verify is provided by the Mailgent MCP Server MCP server (loomal-ai/loomal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →