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adb_at_cross_validate

Cross-validate baseband firmware by comparing AT command responses from the modem with Android system properties, revealing discrepancies that may indicate tampering or spoofing.

Instructions

Cross-validate baseband firmware by comparing AT command responses (direct modem interrogation) against Android system properties (getprop). Discrepancies may indicate firmware tampering, incomplete OTA updates, or property spoofing. Sends ATI (identification), AT+CGMR (firmware revision), and AT+CGMM (model) to the modem and compares with gsm.version.baseband, ro.hardware.chipname, and related properties. Requires root.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
portNoModem device node (auto-detects if omitted)
timeoutNoResponse timeout per command in ms
deviceNoDevice serial
Behavior4/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It transparently describes the AT commands sent and the properties compared, and notes the root requirement. It does not detail the output format or error handling, but the core behavior is well explained.

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

Conciseness5/5

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

The description is concise and well-structured: the first sentence states the purpose, the second adds motivational context, and the third lists specifics. Every sentence adds value, and there is no redundant information.

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?

The description covers the main functionality and prerequisites, but it does not specify the output format or return behavior. Since there is no output schema, more information about what the agent can expect (e.g., list of mismatches, exit code) would improve completeness.

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%, so the baseline is 3. The description adds some context by listing the specific AT commands and properties, which implicitly relates to the parameters, but does not directly enhance the parameter descriptions beyond what the schema already provides.

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 the tool's purpose: cross-validate baseband firmware by comparing AT command responses with Android system properties. It specifies exact commands (ATI, AT+CGMR, AT+CGMM) and properties (gsm.version.baseband, ro.hardware.chipname), and explains the implications of discrepancies. This distinguishes it from sibling AT tools like adb_at_send or adb_baseband_info.

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

Usage Guidelines4/5

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

The description provides context for when to use the tool ('discrepancies may indicate firmware tampering') and explicitly states a prerequisite ('Requires root'). However, it does not explicitly mention alternatives or when not to use, though the unique cross-validation purpose is clear from the name and description.

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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