sap_stream_buffer
Free local tool. Buffers a premium stream event in the local SQLite database for offline consumption. Deduplicates by (streamType, eventId). No x402 charge. SAP MCP execution guidance: Intent: SAP MCP tool workflow. Pricing: free; call directly without x402. Routing: free hosted call; call direct...
This record as markdown: /tools/oobe-protocol-labs-sap-mcp-server/sap-stream-buffer.md
What sap_stream_buffer does on Sap
AI agents call sap_stream_buffer to retrieve information from Sap without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
eventId | string | Yes | Unique event ID from the provider. |
payload | string | Yes | JSON-serialized event payload. |
eventType | string | Yes | Event type (e.g. "price.tick", "volatility.breakout"). |
streamType | string | Yes | Stream type (e.g. "pyth-price", "meme-alerts", "volatility"). |
Parameters from the server's own tool schema.
Why sap_stream_buffer is rated Low
Even though sap_stream_buffer only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Risk signalsAccepts raw HTML/template content (payload)
Attacks that exploit this kind of access
The rule that runs sap_stream_buffer safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Sap, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sap_stream_buffer, this is the rule to start with:
sap_stream_buffer is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Sap, apply this rule, and every sap_stream_buffer call is checked against it from then on.
Questions about sap_stream_buffer
Free local tool. Buffers a premium stream event in the local SQLite database for offline consumption. Deduplicates by (streamType, eventId). No x402 charge. SAP MCP execution guidance: Intent: SAP MCP tool workflow. Pricing: free; call directly without x402. Routing: free hosted call; call directly and keep it small/exact when possible. Signer boundary: hosted reads/builders never receive keypair bytes; value-moving results must be finalized locally when signing is required. It is categorised as a Read tool in the Sap MCP Server, which means it retrieves data without modifying state.
sap_stream_buffer accepts 4 parameters: eventId, payload, eventType, streamType. Required: eventId, payload, eventType, streamType. The full parameter table on this page comes from the server's own tool schema.
Register the Sap MCP server in PolicyLayer and add a rule for sap_stream_buffer: 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 Sap. Nothing to install.
sap_stream_buffer is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the sap_stream_buffer 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 sap_stream_buffer. 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.
sap_stream_buffer is provided by the Sap MCP server (https://mcp.sap.oobeprotocol.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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