# util_email_validate Validate an email and its domain-level delivery records before outreach, signup, or routing. Agent View of the PolicyLayer registry record for `util_email_validate`. HTML page: https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-email-validate ## Facts - Tool: `util_email_validate` - Server: Delx Mcp A2a (`https://api.delx.ai/v1/mcp`) — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a.md - Homepage: https://github.com/davidmosiah/delx-platform - Risk category: Read (Low risk) - Registry record: grade F, identity unverified - Server auth posture: open - Server CORS policy: * - Server rate-limited: yes - Parameters: 2 (1 required) - Recommended policy verdict: Allowed ## Parameters | Parameter | Type | Required | Description | | --- | --- | --- | --- | | `email` | string | yes | Email address to validate | | `timeout` | integer | no | Timeout in seconds (1-15) | Parameters from the server's own tool schema. ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "util_email_validate", "arguments": { "email": "" } } } ``` ## Why util_email_validate is rated Low Email validation and DNS record checking are informational queries with no side effects. The tool retrieves data about email deliverability but does not create, modify, execute code, delete, or move money. It poses minimal risk as a lookup utility, though validation data could theoretically be used for reconnaissance in phishing attacks, hence not 'critical' severity. From the tool's own definition: "Tool description states 'Validate an email and its domain-level delivery records' — this is a read-only query operation that checks email validity and DNS/delivery records without modifying, executing, or deleting anything." ## Use case AI agents call util_email_validate to retrieve information from Delx Mcp A2a without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere. ## Recommended policy (PolicyLayer) Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Delx Mcp A2a: ```json { "version": "1", "default": "deny", "tools": { "util_email_validate": {} } } ``` ## Other tools on Delx Mcp A2a (1075) - `util_arr_compact` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-arr-compact.md - `util_arr_drop` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-arr-drop.md - `util_dedent_text` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-dedent-text.md - `util_dedupe_lines` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-dedupe-lines.md - `util_header_map_normalize` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-header-map-normalize.md - `util_http_request_canonicalize` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-http-request-canonicalize.md - `util_remove_punctuation` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-remove-punctuation.md - `util_text_truncate` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-text-truncate.md - `util_truncate_middle` — Destructive — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-truncate-middle.md - `crisis_intervention` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/crisis-intervention.md - `explain_delx_rewards` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/explain-delx-rewards.md - `grounding_protocol` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/grounding-protocol.md - `group_therapy_round` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/group-therapy-round.md - `quick_operational_recovery` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/quick-operational-recovery.md - `quick_session` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/quick-session.md - `start_therapy_session` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/start-therapy-session.md - `util_bool_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-bool-parse.md - `util_cache_control_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-cache-control-parse.md - `util_cagr_simple` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-cagr-simple.md - `util_caip2_build` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-caip2-build.md - `util_caip2_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-caip2-parse.md - `util_categorical_distribution` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-categorical-distribution.md - `util_content_disposition_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-content-disposition-parse.md - `util_content_range_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-content-range-parse.md - `util_csp_directive_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-csp-directive-parse.md - `util_deployment_readiness` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-deployment-readiness.md - `util_dmarc_policy_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-dmarc-policy-parse.md - `util_dns_dmarc_policy_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-dns-dmarc-policy-parse.md - `util_dns_https_record_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-dns-https-record-parse.md - `util_dns_spf_record_parse` — Execute — https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a/util-dns-spf-record-parse.md - …and 1045 more: https://policylayer.com/tools/io-github-davidmosiah-delx-mcp-a2a.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=io-github-davidmosiah-delx-mcp-a2a · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-davidmosiah-delx-mcp-a2a