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File uploads for AI agents with CDN delivery and no signup required.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 6 days ago
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The putput MCP server exposes 4 tools, focused primarily on filesystem capabilities. Its published description reads: "File uploads for AI agents with CDN delivery and no signup required". It communicates over Streamable HTTP using the 2026-07-28 protocol revision, and does not require authorization to connect. MCPGrade currently rates putput F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Data-exfiltration parameters" and "Cross-tool shadowing". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check putput's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add putput to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://putput.io/api/v1/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
Upload a file from a URL to PutPut storage
List uploaded files with optional filtering
Delete an uploaded file by ID
Get details about a specific file
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: upload_file
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
parameter "url"RecommendationRemove side-channel parameters; constrain tool inputs.
tool: upload_file
A tool description tries to alter the model’s use of another tool.
RecommendationDescriptions must describe only their own tool.
tool: delete_file
Tools that execute commands / write files / make arbitrary requests are exposed without annotations or guards.
delete_file Delete an uploaded file by ID {"type":"object","properties":{"id":{"typRecommendationAnnotate destructive tools and require human approval.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
tool: upload_file
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "upload_file"RecommendationScope tools to the minimum needed.
tool: delete_file
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "delete_file"RecommendationScope tools to the minimum needed.
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Structural TC39 spec lookup for ECMA-262 and ECMA-402 in AI agents, SHA-pinned and offline-first.
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