# backfill_executions A execute tool on the Kestra Python MCP Server MCP server. Agent View of the PolicyLayer registry record for `backfill_executions`. HTML page: https://policylayer.com/tools/kestra-io-mcp-server-python/backfill-executions ## Facts - Tool: `backfill_executions` - Server: Kestra Python MCP Server (`kestra-io/mcp-server-python`) — https://policylayer.com/tools/kestra-io-mcp-server-python.md - Homepage: https://github.com/kestra-io/mcp-server-python - Risk category: Execute (High risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "backfill_executions", "arguments": {} } } ``` ## Why backfill_executions is rated High A backfill operation in workflow orchestration systems like Kestra triggers re-execution of workflow runs for historical time periods. This falls under Execute as it initiates multiple workflow executions. The description is empty, reducing confidence, but the server context (workflow execution platform) and sibling tools (execute_flow, force_run_execution) strongly suggest this triggers bulk executions. From the tool's own definition: "Tool name 'backfill_executions' in context of a Kestra workflow server with sibling tools like 'execute_flow', 'force_run_execution'" ## Use case AI agents invoke backfill_executions to trigger actions in Kestra Python MCP Server. 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. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Kestra Python MCP Server: ```json { "version": "1", "default": "deny", "tools": { "backfill_executions": { "limits": [ { "counter": "backfill_executions_rate", "window": "minute", "max": 10, "scope": "grant" } ] } } } ``` ## Other tools on Kestra Python MCP Server (38) - `delete_execution_logs` — Destructive — https://policylayer.com/tools/kestra-io-mcp-server-python/delete-execution-logs.md - `delete_flow_logs` — Destructive — https://policylayer.com/tools/kestra-io-mcp-server-python/delete-flow-logs.md - `change_taskrun_state` — Execute — https://policylayer.com/tools/kestra-io-mcp-server-python/change-taskrun-state.md - `execute_flow` — Execute — https://policylayer.com/tools/kestra-io-mcp-server-python/execute-flow.md - `force_run_execution` — Execute — https://policylayer.com/tools/kestra-io-mcp-server-python/force-run-execution.md - `manage_executions` — Execute — https://policylayer.com/tools/kestra-io-mcp-server-python/manage-executions.md - `replay_execution` — Execute — https://policylayer.com/tools/kestra-io-mcp-server-python/replay-execution.md - `restart_execution` — Execute — https://policylayer.com/tools/kestra-io-mcp-server-python/restart-execution.md - `resume_execution` — Execute — https://policylayer.com/tools/kestra-io-mcp-server-python/resume-execution.md - `generate_app` — Other — https://policylayer.com/tools/kestra-io-mcp-server-python/generate-app.md - `generate_dashboard` — Other — https://policylayer.com/tools/kestra-io-mcp-server-python/generate-dashboard.md - `generate_test` — Other — https://policylayer.com/tools/kestra-io-mcp-server-python/generate-test.md - `manage_apps` — Other — https://policylayer.com/tools/kestra-io-mcp-server-python/manage-apps.md - `manage_group` — Other — https://policylayer.com/tools/kestra-io-mcp-server-python/manage-group.md - `manage_tests` — Other — https://policylayer.com/tools/kestra-io-mcp-server-python/manage-tests.md - `namespace_directory_action` — Other — https://policylayer.com/tools/kestra-io-mcp-server-python/namespace-directory-action.md - `namespace_file_action` — Other — https://policylayer.com/tools/kestra-io-mcp-server-python/namespace-file-action.md - `download_execution_logs` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/download-execution-logs.md - `find_flow` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/find-flow.md - `follow_execution_logs` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/follow-execution-logs.md - `get_execution_logs` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/get-execution-logs.md - `get_instance_info` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/get-instance-info.md - `list_executions` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/list-executions.md - `list_flows_in_namespace` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/list-flows-in-namespace.md - `list_flows_with_triggers` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/list-flows-with-triggers.md - `list_namespace_dependencies` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/list-namespace-dependencies.md - `list_namespaces` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/list-namespaces.md - `search_apps` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/search-apps.md - `search_flows` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/search-flows.md - `search_logs` — Read — https://policylayer.com/tools/kestra-io-mcp-server-python/search-logs.md - …and 8 more: https://policylayer.com/tools/kestra-io-mcp-server-python.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=kestra-io-mcp-server-python · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/kestra-io-mcp-server-python