Pixly

Blur Faces & Plates

blur_faces_plates

Free (no credits): find and blur people's faces and car licence plates in property photos before they're posted — street and exterior shots, open houses. Automatic detection, 1–5 photos per call. Says so when nothing is found.

Input Schema

Name	Required	Description	Default
`faces`	No
`style`	No		blur
`photos`	Yes	The photos, 1–5. Each item takes imageUrl or r2Path.
`plates`	No
`listingId`	No	A property folder (from list_listings or create_listing) to put the result in. Results of a photo that is already in a folder go there by themselves.

Output Schema

Name	Required	Description
`jobs`	No	Several jobs at once (get_job with jobIds, or a plan's steps): each one's jobId, status and results
`note`	No
`type`	No
`error`	No
`jobId`	Yes	Pass to get_job to poll
`quote`	No	Present when status is "awaiting_confirmation": nothing ran and nothing was charged yet — the price and settings the user is asked to confirm
`status`	Yes	pending \| processing \| completed \| failed — anything not completed/failed is still running
`createdAt`	No
`resultUrls`	No	Present when completed; valid 7 days
`completedAt`	No
`resultPaths`	No	Storage path of each result — pass one as r2Path (or beforeR2Path, a photos[] item) to run another tool on this result
`creditsCharged`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 11, 2026

addedInput schema / properties / listingId

Added value: +{
+  "description": "A property folder (from list_listings or create_listing) to put the result in. Results of a photo that is already in a folder go there by themselves.",
+  "type": "string"
+}

addedOutput schema / properties / jobs

Added value: +{
+  "description": "Several jobs at once (get_job with jobIds, or a plan's steps): each one's jobId, status and results",
+  "items": {
+    "type": "object"
+  },
+  "type": "array"
+}

Changed1 schema field changedOct 6, 2026

addedOutput schema / properties / quote

Added value: +{
+  "description": "Present when status is \"awaiting_confirmation\": nothing ran and nothing was charged yet — the price and settings the user is asked to confirm",
+  "type": "object"
+}

Changed1 schema field changedOct 2, 2026

addedOutput schema / properties / resultPaths

Added value: +{
+  "description": "Storage path of each result — pass one as r2Path (or beforeR2Path, a photos[] item) to run another tool on this result",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

AddedOct 2, 2026

TDQS

A4.1/5.0

Behavior4/5

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

Annotations establish non-read-only, non-destructive behavior; the description usefully adds that it costs no credits, is fully automatic, caps at 1–5 photos per call, and reports when nothing is detected. It does not clarify that output is a new asset or how results relate to the source photo, which would matter for a non-idempotent tool.

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?

Front-loads the key qualifier 'Free (no credits)' and packs cost, scope, and the failure-report behavior into one dense sentence with no filler. Slightly run-on but every clause earns its place.

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

Completeness4/5

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

With an output schema present, return values need no explanation, and the description covers cost, batch size, detection targets, and the no-detection edge case. It leaves the style and listingId parameters unaddressed, a minor gap for a 5-parameter tool.

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 only 40%, so the description must carry weight; it confirms the 1–5 batch limit and the faces/plates targets, but ignores the style (blur vs pixelate) enum behavior and the listingId placement semantics. Baseline 3 is appropriate given partial schema coverage.

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?

States specific verbs (find and blur) and resources (people's faces, car licence plates) with the domain (property photos) and scenarios (street/exterior shots, open houses). This clearly separates it from siblings like watermark_photos or declutter_photo without opening either schema.

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?

Gives clear context: use before photos are posted, for street and exterior shots and open houses. It does not name any alternative tool or state when not to use it (e.g., versus watermark_photos), so it stops short of full routing guidance.

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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