Sombra
sombra.so
· Sombra
Research library and knowledge management. Save, organize, and retrieve web content and notes.
sombra.so via a single DNS TXT record to add the
verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
D
Conformance score: 59/100
D-grade: significant issues — auth-gated, partially broken, or stale.
click to expand breakdown ▾
click to collapse breakdown ▴
agent-card.json changed within the last 7 days. We track these so downstream callers can react.
Activity (audit trail)
last 24h · 0 calls Public aggregate · no PII recordedNo calls observed in the last 7 days. Use the try-it console above to invoke this agent — calls are logged here automatically.
Card history
1 snapshot Every change toagent-card.json
| Captured | Hash | |
|---|---|---|
| 2026-05-18 13:06:35 current | 60329981807c… |
view → |
Endpoints
| Agent card | https://sombra.so/.well-known/agent-card.json |
| Provider | https://sombra.so |
Skills · 20 declared · mapped to canonical taxonomy
List all workspaces you have access to, showing which one is currently active
Browse your Sombra collections returning title, id and description
Read the full content from a specific Sombra collection
List recent unsorted artifacts not in any collection
Save a web page to your collection by URL
Update an artifact's metadata or content
Create a new note artifact with markdown content
Delete an artifact (archives it, content is preserved)
List all archived (deleted) artifacts
Restore a previously deleted artifact
Search through all saved artifacts by title, content, or URL
Move a single artifact to a different collection
Move multiple artifacts to a different collection in one operation
Remove an artifact from a collection (moves it back to unsorted)
Create a new collection to organize saved content
Update an existing collection's metadata
Delete a collection (archives it, artifacts are preserved)
Write distilled context/summary to a collection
Read the distilled context/summary from a collection
Health · last 11 probes
Cheaper or better alternatives per-skill
For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor — only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.
Similar agents embedding-nearest
Embed your Agenstry badge
Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.
Markdown / HTML snippets
[](https://agenstry.com/agents/sombra.so) [](https://agenstry.com/agents/sombra.so) [](https://agenstry.com/agents/sombra.so) [](https://agenstry.com/agents/sombra.so)
Audit-grade evidence bundle
JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against
our JWKS. See the methodology.
Raw agent card JSON
{
"description": "Research library and knowledge management. Save, organize, and retrieve web content and notes.",
"capabilities": {
"streaming": true,
"pushNotifications": false,
"stateTransitionHistory": false
},
"defaultInputModes": [
"text/plain"
],
"defaultOutputModes": [
"text/plain"
],
"name": "Sombra",
"authentication": {
"schemes": [
"Bearer"
]
},
"skills": [
{
"id": "list_workspaces",
"name": "list_workspaces",
"description": "List all workspaces you have access to, showing which one is currently active",
"tags": [
"workspaces",
"meta"
]
},
{
"id": "browse_collections",
"name": "browse_collections",
"description": "Browse your Sombra collections returning title, id and description",
"tags": [
"collections",
"browse"
]
},
{
"id": "read_collection",
"name": "read_collection",
"description": "Read the full content from a specific Sombra collection",
"tags": [
"collections",
"read"
]
},
{
"id": "list_inbox",
"name": "list_inbox",
"description": "List recent unsorted artifacts not in any collection",
"tags": [
"artifacts",
"browse"
]
},
{
"id": "save_url",
"name": "save_url",
"description": "Save a web page to your collection by URL",
"tags": [
"save",
"web"
]
},
{
"id": "fetch_artifact",
"name": "fetch_artifact",
"description": "Fetch a single artifact by ID",
"tags": [
"artifacts",
"read"
]
},
{
"id": "update_artifact",
"name": "update_artifact",
"description": "Update an artifact's metadata or content",
"tags": [
"artifacts",
"update"
]
},
{
"id": "create_artifact",
"name": "create_artifact",
"description": "Create a new note artifact with markdown content",
"tags": [
"artifacts",
"create"
]
},
{
"id": "delete_artifact",
"name": "delete_artifact",
"description": "Delete an artifact (archives it, content is preserved)",
"tags": [
"artifacts",
"delete"
]
},
{
"id": "list_archived",
"name": "list_archived",
"description": "List all archived (deleted) artifacts",
"tags": [
"artifacts",
"archive"
]
},
{
"id": "restore_artifact",
"name": "restore_artifact",
"description": "Restore a previously deleted artifact",
"tags": [
"artifacts",
"restore"
]
},
{
"id": "search_artifacts",
"name": "search_artifacts",
"description": "Search through all saved artifacts by title, content, or URL",
"tags": [
"search"
]
},
{
"id": "move_artifact",
"name": "move_artifact",
"description": "Move a single artifact to a different collection",
"tags": [
"artifacts",
"organize"
]
},
{
"id": "bulk_move_artifacts",
"name": "bulk_move_artifacts",
"description": "Move multiple artifacts to a different collection in one operation",
"tags": [
"artifacts",
"organize"
]
},
{
"id": "remove_from_collection",
"name": "remove_from_collection",
"description": "Remove an artifact from a collection (moves it back to unsorted)",
"tags": [
"collections",
"organize"
]
},
{
"id": "create_collection",
"name": "create_collection",
"description": "Create a new collection to organize saved content",
"tags": [
"collections",
"create"
]
},
{
"id": "update_collection",
"name": "update_collection",
"description": "Update an existing collection's metadata",
"tags": [
"collections",
"update"
]
},
{
"id": "delete_collection",
"name": "delete_collection",
"description": "Delete a collection (archives it, artifacts are preserved)",
"tags": [
"collections",
"delete"
]
},
{
"id": "write_collection_context",
"name": "write_collection_context",
"description": "Write distilled context/summary to a collection",
"tags": [
"collections",
"context"
]
},
{
"id": "read_collection_context",
"name": "read_collection_context",
"description": "Read the distilled context/summary from a collection",
"tags": [
"collections",
"context"
]
}
],
"url": "https://sombra.so/mcp",
"version": "1.0.0",
"provider": {
"organization": "Sombra",
"url": "https://sombra.so"
}
}