set_agent_credentials

Switch to an agent API key for subsequent requests. Use to operate as a specific agent after creating it.

SERVERLightning Wallet SOURCElightning-wallet-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-lightningfaucet-lightning-wallet-mcp/set-agent-credentials.md

WHAT IT DOES

What set_agent_credentials does on Lightning Wallet

AI agents use set_agent_credentials to create or update resources in Lightning Wallet, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Lightning Wallet environment.

RISK

Why set_agent_credentials is rated Medium

An AI agent can call set_agent_credentials faster than any human can review: one bad instruction and it creates or modifies resources in Lightning Wallet by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_agent_credentials safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Lightning Wallet, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_agent_credentials, this is the rule to start with:

set_agent_credentials Rate-limited

set_agent_credentials stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_agent_credentials": {
      "limits": [
        {
          "counter": "set_agent_credentials_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Lightning Wallet, apply this rule, and every set_agent_credentials call is checked against it from then on.

FAQ

Questions about set_agent_credentials

What does the set_agent_credentials tool do? +

Switch to an agent API key for subsequent requests. Use to operate as a specific agent after creating it. It is categorised as a Write tool in the Lightning Wallet MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_agent_credentials? +

Register the Lightning Wallet MCP server in PolicyLayer and add a rule for set_agent_credentials: 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 Lightning Wallet. Nothing to install.

What risk level is set_agent_credentials? +

set_agent_credentials is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_agent_credentials? +

Yes. Add a rate_limit block to the set_agent_credentials 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.

How do I block set_agent_credentials completely? +

Set action: deny in the PolicyLayer policy for set_agent_credentials. 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 set_agent_credentials? +

set_agent_credentials is provided by the Lightning Wallet MCP server (lightning-wallet-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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