rawtherapee-mcp-server (lucamarien/rawtherapee-mcp-server) is an MCP server listed on the M8ven Trust Index. It scores 54 out of 100, grade D. It declares 49 tools. No publisher has claimed this listing.

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D
Caution
54/100

rawtherapee-mcp-server

Enables AI-assisted RAW photo development via RawTherapee CLI, with a visual feedback loop that allows the LLM to see and iteratively edit images.

→ lucamarien/rawtherapee-mcp-server· listed on glama

Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

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Who stands behind it

lucamarien

Source: Glama

Is this your MCP?

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Install from

Glamanot scored here

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configRT_CLI_PATH"": "C:\\Program Files\\RawTherapee\\5.12\\rawtherapee-cli.exe",
configProgramFiles
configRT_LOG_LEVELWARNING Logging level (DEBUG, INFO, WARNING, ERROR)
configRT_OUTPUT_DIR"": "C:\\Users\\YourName\\Pictures\\rawtherapee-output"
configRT_PREVIEW_DIROS temp dir Preview image directory
configRT_CUSTOM_TEMPLATES_DIR./custom_templates Custom PP3 templates directory
configRT_PREVIEW_MAX_WIDTH1200 Max preview width in pixels
configRT_JPEG_QUALITY95 Default JPEG quality (1-100)
configRT_HALDCLUT_DIRlist_luts Scan for HaldCLUT film simulation LUTs, grouped by category
configRT_LCP_DIR
configRT_LENSFUN_DIR
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

49/49 tools missing one or more hints — check_rt_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_raw_files (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); read_exif (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +46 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Destructive tools are labelled

4 tools perform destructive updates without destructiveHint — apply_template deletes at line 806 (combined_path.unlink(missing_ok=True)); delete_template deletes at line 1071 (custom_path.unlink()); batch_process deletes at line 1208 (tp.unlink(missing_ok=True))

Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.

Tool inputs are validated

46/49 tool handlers declare input schemas (94%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tool handlers catch errors

25/49 tool handlers wrap calls in try/catch (51%)

Wrap each tool handler body in try/catch and return a structured error response.

Tests exist

No test files found

Add tests that exercise each declared tool.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 6 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Verified](https://m8ven.ai/badge/mcp/lucamarien/rawtherapee-mcp-server?variant=verified)](https://m8ven.ai/mcp/lucamarien/rawtherapee-mcp-server)
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commit: 677598fbe32696e08cbe80919417c4d35ac151fd
code hash: 5b10e8d82adb5be43af1f9cf6e8b5b45a45846fd09999f37559222fbfa6a86f6
view raw JSON →
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