Query the ERC-8004 on-chain agent registry on Base. Resolve MolTrust agents to their on-chain ERC-8004 identity, fetch Agent Cards, or look up on-chain agents by their agentId. Args: action: One of "card", "resolve", or "well-known" did: Agent DID (required for "card", e.g. "did:moltrust:a1b2c3d4...
Part of the MolTrust server.
Free to start. No card required.
AI agents call moltrust_erc8004 to retrieve information from MolTrust without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though moltrust_erc8004 only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"moltrust_erc8004": {}
}
}See the full MolTrust policy for all 11 tools.
These attack patterns abuse exactly the kind of access moltrust_erc8004 gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Query the ERC-8004 on-chain agent registry on Base. Resolve MolTrust agents to their on-chain ERC-8004 identity, fetch Agent Cards, or look up on-chain agents by their agentId. Args: action: One of "card", "resolve", or "well-known" did: Agent DID (required for "card", e.g. "did:moltrust:a1b2c3d4e5f60718") agent_id: On-chain ERC-8004 agent ID (required for "resolve", e.g. 21023). It is categorised as a Read tool in the MolTrust MCP Server, which means it retrieves data without modifying state.
Register the MolTrust MCP server in PolicyLayer and add a rule for moltrust_erc8004: 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 MolTrust. Nothing to install.
moltrust_erc8004 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 moltrust_erc8004 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 moltrust_erc8004. 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.
moltrust_erc8004 is provided by the MolTrust MCP server (moltrust/moltrust-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 11 MolTrust tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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