selectel-s3-mcp-ai-cli
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| SELECTEL_S3_POOL | No | Signing pool | ru-1 |
| SELECTEL_S3_ALLOW | No | Independent write,delete,admin levels; read only by default | |
| SELECTEL_S3_ENDPOINT | No | Optional endpoint override | |
| SELECTEL_S3_FILE_ROOT | No | Optional confined local file root | |
| SELECTEL_S3_AUDIT_FILE | No | Optional private append-only audit output | |
| SELECTEL_S3_ACCESS_KEY_ID | No | S3 access key ID | |
| SELECTEL_S3_ALLOW_INSECURE | No | Set 1 only for explicit HTTP test endpoints | |
| SELECTEL_S3_ALLOWED_BUCKETS | No | Comma-separated bucket scope | |
| SELECTEL_S3_ALLOWED_PREFIXES | No | Comma-separated bucket/prefix/ scope | |
| SELECTEL_S3_SECRET_ACCESS_KEY | No | S3 secret access key | |
| SELECTEL_S3_DESTRUCTIVE_POLICY | No | SELECTEL_S3_DESTRUCTIVE_POLICY | confirm |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
| logging | {} |
| resources | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| s3_get_bucket_configB | Read location, versioning, CORS, policy and Object Lock; report absent/unsupported configuration. |
| s3_get_objectA | Read at most 262144 bytes inline as text/base64; use presign for larger objects. |
| s3_head_objectC | Read object metadata. |
| s3_largest_objectsC | Bounded largest objects scan, default max_scan 10000; partial results carry continuation token. |
| s3_list_bucketsB | List visible buckets with pagination. |
| s3_list_multipart_uploadsC | List unfinished uploads; pass both returned markers. |
| s3_list_object_versionsC | List versions and delete markers with both pagination markers. |
| s3_list_objectsC | List a scoped prefix, at most 1000 objects per page. |
| s3_list_partsD | List multipart parts. |
| s3_prefix_usageC | Bounded usage by first-level prefixes; paginate aggregate rows with next_result_offset. |
| s3_presign_getC | Create signed GET URL; default 3600 seconds, provider maximum is unverified. |
| s3_preview_objectC | Preview first at most 65536 bytes, detected type and CSV header. |
| s3_unfinished_uploadsC | Find uploads older than N hours (default 24), bounded by max_scan. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
| capabilities | |
| config | |
| pools |
TDQS
Scored across 13 tools
Each tool targets a distinct S3 operation and resources are mostly unambiguous. However, s3_list_multipart_uploads and s3_unfinished_uploads overlap significantly in purpose, and s3_get_object / s3_head_object / s3_preview_object all read objects, which could cause confusion.
All tool names follow a consistent s3_verb_noun (or s3_noun_metric) snake_case pattern: s3_list_objects, s3_get_object, s3_presign_get, etc. Predictable and easy to infer.
13 tools for a full S3 server is well-scoped, each covering a distinct S3 capability (listing, config, objects, multipart, presign, usage). No tool feels redundant or superfluous.
Strong read/analysis coverage: buckets, objects, versions, multipart, config, presign. Missing write/mutation operations (PUT object, delete, copy) that an S3 server would typically expose, but as a CLI read/diagnostic tool the surface is largely coherent.