# search_materials

Search across verified listings by material type, quantity, location, grade, and price range. Returns results ranked by weighted procurement score (not just distance). Each result includes scoring breakdown and seller details.

Agent View of the PolicyLayer registry record for `search_materials`. HTML page: https://policylayer.com/tools/nitrostack/search-materials

## Facts

- Tool: `search_materials`
- Server: Nitrostack (`nitrocloudofficial/nitrostack`) — https://policylayer.com/tools/nitrostack.md
- Homepage: https://github.com/nitrocloudofficial/nitrostack
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "search_materials",
    "arguments": {}
  }
}
```

## Why search_materials is rated Low

Tool queries and retrieves material listing data with no side effects or modifications.

From the tool's own definition: "Search across verified listings by material type, quantity, location, grade, price range. Returns results ranked."

## Use case

AI agents call search_materials to retrieve information from Nitrostack 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 Nitrostack:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_materials": {}
  }
}
```

## Other tools on Nitrostack (696)

- `cancel_appointment` — Destructive — https://policylayer.com/tools/nitrostack/cancel-appointment.md
- `cancel_followup` — Destructive — https://policylayer.com/tools/nitrostack/cancel-followup.md
- `cancel_order` — Destructive — https://policylayer.com/tools/nitrostack/cancel-order.md
- `clean_temp_files` — Destructive — https://policylayer.com/tools/nitrostack/clean-temp-files.md
- `clear_icon_cache` — Destructive — https://policylayer.com/tools/nitrostack/clear-icon-cache.md
- `commit_transaction` — Destructive — https://policylayer.com/tools/nitrostack/commit-transaction.md
- `delete_account` — Destructive — https://policylayer.com/tools/nitrostack/delete-account.md
- `delete_chat_session` — Destructive — https://policylayer.com/tools/nitrostack/delete-chat-session.md
- `delete_document` — Destructive — https://policylayer.com/tools/nitrostack/delete-document.md
- `delete_message` — Destructive — https://policylayer.com/tools/nitrostack/delete-message.md
- `delete_project` — Destructive — https://policylayer.com/tools/nitrostack/delete-project.md
- `empty_recycle_bin` — Destructive — https://policylayer.com/tools/nitrostack/empty-recycle-bin.md
- `obsidian-delete-note` — Destructive — https://policylayer.com/tools/nitrostack/obsidian-delete-note.md
- `release_environment` — Destructive — https://policylayer.com/tools/nitrostack/release-environment.md
- `remove_policy_rule` — Destructive — https://policylayer.com/tools/nitrostack/remove-policy-rule.md
- `reset_demo` — Destructive — https://policylayer.com/tools/nitrostack/reset-demo.md
- `reset_demo_data` — Destructive — https://policylayer.com/tools/nitrostack/reset-demo-data.md
- `revoke_api_key` — Destructive — https://policylayer.com/tools/nitrostack/revoke-api-key.md
- `revoke_invite` — Destructive — https://policylayer.com/tools/nitrostack/revoke-invite.md
- `rollback_transaction` — Destructive — https://policylayer.com/tools/nitrostack/rollback-transaction.md
- `screen_fraud` — Destructive — https://policylayer.com/tools/nitrostack/screen-fraud.md
- `send_email` — Destructive — https://policylayer.com/tools/nitrostack/send-email.md
- `accept_offer` — Execute — https://policylayer.com/tools/nitrostack/accept-offer.md
- `advance_application` — Execute — https://policylayer.com/tools/nitrostack/advance-application.md
- `analyze_material_health` — Execute — https://policylayer.com/tools/nitrostack/analyze-material-health.md
- `analyze_video` — Execute — https://policylayer.com/tools/nitrostack/analyze-video.md
- `approve_action` — Execute — https://policylayer.com/tools/nitrostack/approve-action.md
- `audit_pizza_shops` — Execute — https://policylayer.com/tools/nitrostack/audit-pizza-shops.md
- `call_tool` — Execute — https://policylayer.com/tools/nitrostack/call-tool.md
- `chat_architect` — Execute — https://policylayer.com/tools/nitrostack/chat-architect.md
- …and 666 more: https://policylayer.com/tools/nitrostack.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`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=nitrostack · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/nitrostack