crm_exchange_token

Exchange an OAuth authorization code for access and refresh tokens.

SERVER0nmcp SOURCE0nmcp

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-0nork-0nmcp/crm-exchange-token.md

WHAT IT DOES

What crm_exchange_token does on 0nmcp

AI agents use crm_exchange_token to create or update resources in 0nmcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 0nmcp environment.

RISK

Why crm_exchange_token is rated Medium

This tool performs an OAuth token exchange, which creates new authentication tokens (access and refresh). This is a Write operation as it generates/creates new credentials in the OAuth system. The severity is high because misuse could result in unauthorized access token generation, potentially granting persistent access to CRM systems via refresh tokens.

From the tool's definition Exchange an OAuth authorization code for access and refresh tokens

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs crm_exchange_token safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 0nmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crm_exchange_token, this is the rule to start with:

crm_exchange_token Rate-limited

crm_exchange_token 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": {
    "crm_exchange_token": {
      "limits": [
        {
          "counter": "crm_exchange_token_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 0nmcp, apply this rule, and every crm_exchange_token call is checked against it from then on.

FAQ

Questions about crm_exchange_token

What does the crm_exchange_token tool do? +

Exchange an OAuth authorization code for access and refresh tokens. It is categorised as a Write tool in the 0nmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on crm_exchange_token? +

Register the 0n MCP server in PolicyLayer and add a rule for crm_exchange_token: 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 0nmcp. Nothing to install.

What risk level is crm_exchange_token? +

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

Can I rate-limit crm_exchange_token? +

Yes. Add a rate_limit block to the crm_exchange_token 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 crm_exchange_token completely? +

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

crm_exchange_token is provided by the 0n MCP server (0nmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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