Create a new field in a GitHub Project
AI agents use create-project-field to create or update resources in GitHub Projects MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GitHub Projects MCP Server environment.
This tool creates a new field within a project structure, which is a reversible modification operation. The field can be deleted or modified later, so it does not constitute a destructive or permanent action. It is clearly a Write operation as it modifies the project schema by adding new metadata fields.
From the tool's definition Tool name 'create-project-field' and description 'Create a new field in a GitHub Project' directly indicate data creation in a reversible manner.
Documented attack patterns abuse exactly the kind of access create-project-field gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and GitHub Projects MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create-project-field:
{
"version": "1",
"default": "deny",
"tools": {
"create-project-field": {
"limits": [
{
"counter": "create-project-field_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create-project-field 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.
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Create a new field in a GitHub Project. It is categorised as a Write tool in the GitHub Projects MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the GitHub Projects MCP Server MCP server in PolicyLayer and add a rule for create-project-field: 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 GitHub Projects MCP Server. Nothing to install.
create-project-field 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 create-project-field 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 create-project-field. 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.
create-project-field is provided by the GitHub Projects MCP Server MCP server (taylor-lindores-reeves/mcp-github-projects). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 21 GitHub Projects MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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21 GitHub Projects MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.