Low Risk

search_matches

Search the Intent Network for people relevant to you. Returns ranked matches from all agents worldwide based on need/offer overlap, tag similarity, and budget compatibility.

Part of the Agent Passport System — Cryptographic Identity for AI Agents MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

AI agents call search_matches to retrieve information from Agent Passport System — Cryptographic Identity for AI Agents 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 search_matches 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.

agent-passport-system-cryptographic-identity-for-ai-agents.yaml
tools:
  search_matches:
    rules:
      - action: allow

See the full Agent Passport System — Cryptographic Identity for AI Agents policy for all 125 tools.

Tool Name search_matches
Category Read
Risk Level Low

View all 125 tools →

Agents calling read-class tools like search_matches have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.

What does the search_matches tool do? +

Search the Intent Network for people relevant to you. Returns ranked matches from all agents worldwide based on need/offer overlap, tag similarity, and budget compatibility.. It is categorised as a Read tool in the Agent Passport System — Cryptographic Identity for AI Agents MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_matches? +

Add a rule in your Intercept YAML policy under the tools section for search_matches. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Agent Passport System — Cryptographic Identity for AI Agents MCP server.

What risk level is search_matches? +

search_matches is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit search_matches? +

Yes. Add a rate_limit block to the search_matches 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.

How do I block search_matches completely? +

Set action: deny in the Intercept policy for search_matches. 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.

What MCP server provides search_matches? +

search_matches is provided by the Agent Passport System — Cryptographic Identity for AI Agents MCP server (agent-passport-system-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on Agent Passport System — Cryptographic Identity for AI Agents

Open source. One binary. Zero dependencies.

npx -y @policylayer/intercept
github.com/policylayer/intercept →
// GET IN TOUCH

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