secret-set
Sets a repository, organization, or environment GitHub Actions secret. Secret values are sent via stdin and never returned.
This record as markdown: /tools/io-github-dave-london-go/secret-set.md
What secret-set does on Go
AI agents use secret-set to create or update resources in Go, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Go environment.
Why secret-set is rated Medium
This tool modifies sensitive GitHub Actions secrets, which are security-critical configuration. While not destructive (secrets can be overwritten), not directly financial, and not code execution, it is a Write operation that creates or modifies data. The high severity reflects the security impact: misconfigured or leaked secrets can compromise repositories, CI/CD pipelines, and deployments.
From the tool's definition Tool name 'secret-set' combined with description stating it 'Sets a repository, organization, or environment GitHub Actions secret' explicitly describes creating/modifying secret configuration.
Attacks that exploit this kind of access
The rule that runs secret-set safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Go, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For secret-set, this is the rule to start with:
secret-set 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Go, apply this rule, and every secret-set call is checked against it from then on.
Questions about secret-set
Sets a repository, organization, or environment GitHub Actions secret. Secret values are sent via stdin and never returned. It is categorised as a Write tool in the Go MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Go MCP server in PolicyLayer and add a rule for secret-set: 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 Go. Nothing to install.
secret-set is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the secret-set 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 secret-set. 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.
secret-set is provided by the Go 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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