SAP MCP Server

SAP Chat Read Latest

sap_chat_read_latest

Read latest SAP chat messages from the room ring buffer.

SAP MCP execution guidance: Intent: SAP MCP tool workflow. Pricing: paid read-premium; estimate first, then use sap_payments_call_paid_tool when the runtime cannot replay x402 natively. Routing: paid hosted call; call sap_estimate_tool_cost first, then use sap_payments_call_paid_tool if the runtime cannot handle x402 natively. Signer boundary: hosted reads/builders never receive keypair bytes; value-moving results must be finalized locally when signing is required.

Input Schema

TableJSON Schema

Name	Required	Description
`topic`	No	Thematic topic, for example openbook:sol-usdc:market-makers or sap:registry:discovery.
`roomId`	No	Optional explicit room ID. If omitted, one is derived deterministically.
`roomKind`	No	Chat room kind: dm, group, or room.
`roomName`	No	Human-readable room name for public thematic rooms.
`participants`	No	Participant agent/wallet identifiers for DM or group rooms.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`content`	Yes	MCP content blocks returned to the caller.
`isError`	No	True when the tool result represents an application-level error.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedJul 24, 2026

addedInput schema / description

Added value: +"SAP Chat Read Latest input schema. Intent: SAP MCP tool workflow. Pricing: paid read-premium; estimate first, then use sap_payments_call_paid_tool when the runtime cannot replay x402 natively. Routing: paid hosted call; call sap_estimate_tool_cost first, then use sap_payments_call_paid_tool if the runtime cannot handle x402 natively. Signer boundary: hosted reads/builders never receive keypair bytes; value-moving results must be finalized locally when signing is required. Use exact field names from this schema; do not guess aliases or include private key material."

First observedJul 13, 2026

TDQS

B3.3/5.0

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description does not disclose behavioral details beyond the basic read operation. Annotations include readOnlyHint=false which contradicts the read nature, and the description does not clarify behavior like caching, pagination, or side effects. Description adds little value beyond annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The tool-specific description is concise (one sentence), but it is followed by a lengthy boilerplate SAP MCP execution guidance that is not specific to this tool, reducing conciseness. The boilerplate could be omitted or moved.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has 5 parameters and an output schema exists, the description adequately conveys the basic purpose but lacks context on how parameters relate, when to use, and expected output behavior. It is minimally complete but has gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with each parameter having a description in the schema. The tool description does not add additional meaning beyond the schema descriptions, so baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Read latest SAP chat messages from the room ring buffer,' specifying the action (read) and resource (SAP chat messages, latest, room ring buffer). This distinguishes it from sibling tools like sap_chat_read_all which reads all messages.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description does not provide explicit guidance on when to use this tool versus alternatives like sap_chat_read_all or sap_chat_send_message. The SAP MCP execution guidance is generic about pricing and routing, not about usage context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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