post
Makes an HTTP POST request via curl and returns structured response data. Convenience wrapper for the request tool with required body.
This record as markdown: /tools/io-github-dave-london-cargo/post.md
What post does on Cargo
AI agents invoke post to trigger actions in Cargo. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why post is rated High
This tool executes an arbitrary HTTP POST request via curl to any URL with a supplied body. It triggers external network operations whose effects are entirely dependent on arguments — it could mutate remote systems, trigger webhooks, submit forms, or call APIs. The blast radius is high because an AI agent could direct it to any endpoint with any payload, causing uncontrolled side effects on external services.
From the tool's definition Makes an HTTP POST request via curl and returns structured response data
Attacks that exploit this kind of access
The rule that runs post safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Cargo, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For post, this is the rule to start with:
post stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Cargo, apply this rule, and every post call is checked against it from then on.
Questions about post
Makes an HTTP POST request via curl and returns structured response data. Convenience wrapper for the request tool with required body. It is categorised as a Execute tool in the Cargo MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Cargo MCP server in PolicyLayer and add a rule for post: 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 Cargo. Nothing to install.
post is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the post 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 post. 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.
post is provided by the Cargo MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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