Creates a GraphQL schema for an AppSync API and polls until completion. This tool starts the schema creation process and automatically polls for the status until the operation completes (either SUCCESS or FAILED). The schema defines the structure of your GraphQL API, incl...
Part of the AWS AppSync MCP Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use create_schema to create or modify resources in AWS AppSync MCP Server. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call create_schema repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach AWS AppSync MCP Server.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
tools:
create_schema:
rules:
- action: allow
rate_limit:
max: 30
window: 60See the full AWS AppSync MCP Server policy for all 10 tools.
Agents calling write-class tools like create_schema have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
Creates a GraphQL schema for an AppSync API and polls until completion. This tool starts the schema creation process and automatically polls for the status until the operation completes (either SUCCESS or FAILED). The schema defines the structure of your GraphQL API, including types, queries, mutations, and subscriptions.. It is categorised as a Write tool in the AWS AppSync MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Add a rule in your Intercept YAML policy under the tools section for create_schema. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the AWS AppSync MCP Server MCP server.
create_schema 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_schema rule in your Intercept 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 Intercept policy for create_schema. 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_schema is provided by the AWS AppSync MCP Server MCP server (awslabs.aws-appsync-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.