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extract_exif_geolocation

Extract GPS coordinates, altitude, device serials, and timestamps from JPEG, TIFF, or HEIC images, or securely scrub this metadata to protect privacy.

Instructions

Extracts or securely scrubs GPS coordinates, altitude, camera device serials, and timestamps from JPEG/TIFF/HEIC image buffers. (0.01 USDC on Base L2)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
payloadYesInput parameters or JSON string payload for the tool execution
paymentSignatureNoBase L2 USDC micropayment signature or transaction hash for x402 settlement

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.9/5.0
Behavior2/5

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

With no annotations, the description carries the full burden of behavioral disclosure. It reveals that sensitive metadata fields are handled and that scrubbing is 'secure,' but it leaves major behavioral questions open: does the tool mutate the input buffer, return a new buffer, or both? Is scrubbing irreversible? What is the output format? The dual 'extracts or scrubs' phrasing also hides how the tool decides between these two very different behaviors.

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

Conciseness4/5

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

The description is compact and front-loaded: the first sentence states the operation and data scope, and the second gives a concise pricing note. There is no redundant wording. Some precision is traded for brevity through the ambiguous 'or,' but as a structural matter the description is efficient.

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

Completeness2/5

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

For a tool with no annotations, no output schema, and a generic JSON-string payload parameter, this description is not sufficient. It does not explain the input buffer encoding, how to request extraction versus scrubbing, whether the response is a new image or extracted metadata, or how the micropayment is expected to be supplied. Given the availability of a likely overlapping sibling tool, the lack of context is a meaningful gap.

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 description coverage is 100%, so the baseline is 3 even though the provided parameter descriptions are generic. The tool description adds meaningful context to the payload parameter by indicating it represents image buffers and that the tool acts on GPS, altitude, serial, and timestamp data. However, it still does not explain how the payload should encode the desired operation or how paymentSignature participates in the call.

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

Purpose4/5

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

The description names specific actions (extract or securely scrub), a specific set of metadata fields (GPS coordinates, altitude, camera device serials, timestamps), and specific input formats (JPEG/TIFF/HEIC). It does not, however, clarify which operation will be performed or how the mode is selected, and it does not distinguish itself from the overlapping sibling tool multimodal_image_exif_redactor.

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

Usage Guidelines2/5

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

No when-to-use or when-not-to-use guidance is provided. The description gives no indication of when extraction is appropriate versus scrubbing, and it does not mention the closely related alternative multimodal_image_exif_redactor. The only usage implication is that the tool operates on image buffers containing EXIF-like metadata.

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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