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...
Part of the MolTrust MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
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.
tools:
moltrust_erc8004:
rules:
- action: allowSee the full MolTrust policy for all 11 tools.
Agents calling read-class tools like moltrust_erc8004 have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
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.
Add a rule in your Intercept YAML policy under the tools section for moltrust_erc8004. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the MolTrust MCP server.
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 Intercept 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 Intercept 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). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept