Zernote
REMOTE · ZERNOTE.COM · SCANNED SEP 27
User research workspace to transcribe interviews and turn conversations into insights.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security81
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
- The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability75
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 3581 tokens (~210/item across 17 items; 14 tools + 3 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management13
- Stability observed for 4 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage95
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 85% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 14 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 16 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities47
- Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28. See how to fix → Fail
- Supports UI / widget rendering.Pass
How do I install the Zernote MCP server?
Zernote is a hosted endpoint at https://zernote.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · zernote.com
claude mcp add --transport http com-zernote-zernote 'https://zernote.com/mcp'
{
"mcpServers": {
"com-zernote-zernote": {
"url": "https://zernote.com/mcp"
}
}
} {
"servers": {
"com-zernote-zernote": {
"type": "http",
"url": "https://zernote.com/mcp"
}
}
} [mcp_servers.com-zernote-zernote] url = "https://zernote.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-zernote-zernote": {
"type": "remote",
"url": "https://zernote.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-zernote-zernote --url 'https://zernote.com/mcp' --transport streamable-http
mcp_servers:
com-zernote-zernote:
url: "https://zernote.com/mcp" {
"McpServers": {
"com-zernote-zernote": {
"Transport": "http",
"Url": "https://zernote.com/mcp"
}
}
} assistant mcp add com-zernote-zernote -t streamable-http -u 'https://zernote.com/mcp'
{
"mcpServers": {
"com-zernote-zernote": {
"type": "http",
"url": "https://zernote.com/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 26 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 Sept 26 +3
- The server rewrote its instructions, which are the text every model session reads security
- Tool “get-skills” rewrote its description, which is the text the model reads security
- Schema quality: 189 → 210 ▼ functional
- Resource “plan-research” was removed ▼ functional
- Resource “who-is-user” was removed ▼ functional
- Schema quality: 60% → 100% ▲ functional
- Stability: unverified → 0.03 ▲ functional
- “get-skills” reworded the description of “id” cosmetic
- 23 Sept 26 +37
- HTTPS: unverified → fail ▼ security
- Transport: unverified → pass ▲ security
- Injection markers: unverified → pass ▲ security
- First check of Judged manipulation: pass security
- Authorization: Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. security
- MCP protocol: unverified → fail ▼ functional
- Schema quality: unverified → 60 ▲ functional
- Tool coverage: unverified → 100 ▲ functional
- First check of Schema quality: fail functional
- First check of Destructive annotations: pass functional
- First check of Schema quality: fail functional
- First check of Capabilities: pass functional
- First check of Tool coverage: 85 functional
- First check of Schema quality: good functional
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 5 Aug 26 0
- Transport: fail → unverified ▼ security
- Authorization: unverified → pass ▲ security
- Tool coverage: Tool coverage blocked by authentication: the endpoint requires auth we don't have to read its tools. functional
- Schema quality: Schema blocked by authentication: the endpoint requires auth we don't have to read it. functional
- Capabilities: Capabilities blocked by authentication: the endpoint requires auth we don't have to read them. functional
- 4 Aug 26 0
- Transport: unverified → fail ▼ security
- Authorization: pass → unverified ▼ security
- Tool coverage: Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list. functional
- Capabilities: Capabilities not yet verified: we couldn't read the endpoint's capabilities. functional
- Schema quality: Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list. functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 27 Sept 2026 · Probed https://zernote.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=zernote.com | CN=WE1,O=Google Trust Services,C=US | 22 Sept 2026 | 21 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 41d982db6a92a92e0e6a9068806c6977 |
| SANs: zernote.com, download.zernote.com, *.download.zernote.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of zernote.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| zernote.com. | present | 2371 | 13 | Verified |
| zernote.com. | Verified address RRset verified with the apex keys |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer error="invalid_token", error_description="Authentication required for this tool", resource_metadata="https://zernote.com/.well-known/oauth-protected-resource/mcp", scope="folders:read folders:write interviews:read interviews:write interviews:upload transcripts:read search:read notes:write"
Bearer error="invalid_token", error_description="Authentication required for this tool", resource_metadata="https://zernote.com/.well-known/oauth-protected-resource/mcp", scope="folders:read folders:write interviews:read interviews:write interviews:upload transcripts:read search:read notes:write" | Header | Value |
|---|---|
| www-authenticate | Bearer error="invalid_token", error_description="Authentication required for this tool", resource_metadata="https://zernote.com/.well-known/oauth-protected-resource/mcp", scope="folders:read folders:write interviews:read interviews:write interviews:upload transcripts:read search:read notes:write" |
Protected resource metadata
| Document | https://zernote.com/.well-known/oauth-protected-resource/mcp |
|---|---|
| Retrieved | Yes |
| Resource | https://zernote.com/mcp |
| Authorisation server | https://zernote.com |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://zernote.com/mcp | Verified | 200 | |
| http (plaintext) | http://zernote.com/mcp | Served over HTTP | 200 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
cards_read Cards Read ~277
List L2 coded claim-cards (claim + optional quote + chunk_index + lens + codes + start_seconds? + url). Filter by project_id, interview_id / interview_ids, codes (any match), or lens (workflow|gtm|privacy|other). CITATION REQUIRED: actively cite each card.quote to the user as markdown ["verbatim quote"]({base_url}/project/interview/{id}?t={seconds}) using item.url from the tool result (already absolute; includes ?t= when start_seconds is set). Prefer quotes over paraphrase. Verify with interviews_read action=transcript around_chunk_index when a wider quote window is needed.
| Name | Type | Req | Description |
|---|---|---|---|
| codes | array | – | Optional code tags; any match (e.g. pain:synthesis, gtm:pricing). |
| folder_id | string | – | Deprecated alias for project_id. |
| interview_id | string | – | Optional interview UUID to scope cards. |
| interview_ids | array | – | Optional interview UUIDs to scope cards. |
| lens | string | – | Optional exact lens filter. |
| limit | integer | – | Max cards to return (default 50, max 200). |
| offset | integer | – | Number of cards to skip (default 0). |
| project_id | string | – | Optional project UUID — cards from interviews in this project (alias: folder_id). |
No output schema declared.
No examples provided.
get-skills Startup ideas / office hours ~103
Use for startup ideas, office hours, and “I installed this connector to work through an idea”. Inside: office-hours-zernote (challenge the idea), zernote-plan-research. Omit id for the catalog, then pass id for the full playbook. Not for listing interviews or projects. Works without login.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | – | Skill id. Empty = catalog. Examples: office-hours-zernote, zernote-plan-research. |
No output schema declared.
No examples provided.
insights_read Insights Read ~415
Read the project Insights graph in pages or by node. action=list returns a compact folder-wide outline (groups + interviews) plus a page of insight bodies. Filter with interview_id, group_id (DB UUID, not UI group-0), group_name, insight_ids, or ungrouped_only. action=get_node returns one node: insight | interview | group | ungrouped. CITATION REQUIRED: actively cite each item.quote as markdown ["verbatim quote"]({base_url}/project/interview/{id}?t={seconds}) using item.url from the tool result (already absolute; includes ?t= when start_seconds is set). Prefer quotes over paraphrase. Do not use quote_start — that is a character offset, not a player timestamp.
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | list = paged insight bodies + outline. get_node = one insight, interview, group, or ungrouped cluster. |
| folder_id | string | – | Deprecated alias for project_id. |
| group_id | string | – | List filter: insight_groups.id UUID (not a render index like group-0). |
| group_name | string | – | List filter: case-insensitive group name match. |
| id | string | – | get_node: insight, interview, or group UUID. Not used for ungrouped. |
| insight_ids | array | – | List filter: only these insight UUIDs. |
| interview_id | string | – | List filter: only insights from this interview. Interview must be in the project. |
| limit | integer | – | List only: max insight bodies (default 25, max 100). |
| node_type | string | – | get_node: which node to load. |
| offset | integer | – | List only: skip this many matching insight bodies (default 0). |
| project_id | string | – | Project/folder UUID (required for list and for get_node group/ungrouped/insight). |
| ungrouped_only | boolean | – | List filter: only insights that are not in a cross-interview group. |
No output schema declared.
No examples provided.
interviews_edit Interviews Edit ~479
Rename, move, write summary/notes, retranscribe, assign/confirm speakers, or toggle voiceprint. action=rename needs id+title; move needs interview_ids (+ optional project_id); write_summary needs id+summary; write_notes needs id+notes; retranscribe needs id+language (charges transcription tokens again; analyze-only, keeps notes). assign_speakers needs id+speaker_labels+assigned_names. For voiceprint interviewer confirm: one label + real name on one interview after quote links; that identity backfills other interviews sharing voice_identity_id — re-list instead of confirming every card. set_voiceprint needs enabled bool (false purges biometric voice data). If need_approve_speakers=true, show quote links then assign_speakers when the user confirms. If transcript_quality.looks_corrupted=true, offer retranscribe with the correct language. write_notes and write_summary replace the entire notes or summary field (not append).
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | Edit action. |
| assigned_names | array | – | Human names matching speaker_labels (assign_speakers). Use a real name, not "Interviewer N". |
| enabled | boolean | – | Voiceprint on/off (set_voiceprint). false deletes stored voice biometrics. |
| folder_id | string | – | Deprecated alias for project_id. |
| id | string | – | Interview UUID (rename, write_summary, write_notes, retranscribe, assign_speakers). |
| interview_ids | array | – | Interview UUIDs to move. |
| language | string | – | Transcription language code for retranscribe (e.g. en, ru, nl). Charges tokens for audio duration. |
| notes | string | – | Full note text that replaces the existing notes field (write_notes). |
| project_id | string | – | Destination project UUID for move (alias: folder_id). Omit or null for Inbox. |
| speaker_labels | array | – | Diarization labels to assign (assign_speakers), e.g. ["A"]. Voiceprint interviewer confirm: one label in this call (same identity then backfills other interviews). |
| summary | string | – | Full summary markdown that replaces the existing summary (write_summary). Expected sections: # Summary, ## Profile, ## Tools & workflow, ## Pains & friction, # Other topics. |
| title | string | – | New title (rename). |
No output schema declared.
No examples provided.
interviews_read Interviews Read ~523
Read interviews. Typical path: (1) action=list with summary_mode=brief (default) — returns the short # Summary. List items include need_approve_speakers (+ pending_speakers / hint): when true, show interviewer quote links then confirm via assign_speakers; one identity confirm backfills other interviews sharing voice_identity_id. Use summary_mode=brief for renaming or folder triage. Use summary_mode=full when Profile/Tools/Pains/Other topics are needed for deeper analysis. (2) call `search` when you need evidence or counter-evidence for a hypothesis; (3) use action=transcript with around_chunk_index from matching_chunks when a quote window is required. CITATION REQUIRED: when answering the user, actively cite evidence as markdown ["verbatim quote"]({base_url}/project/interview/{id}?t={seconds}) using interview_url / matching chunk url from tool results (includes ?t= when start_seconds is set). Prefer quotes over paraphrase.
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | Read action. Use list (brief or summary_mode=full) for overview; use transcript when you need a quote window. |
| around_chunk_index | integer | – | Transcript only: expand a window around this vector-search chunk_index (use instead of blind offset when available). |
| folder_id | string | – | Deprecated alias for project_id. |
| id | string | – | Interview UUID (required for get, status, transcript). |
| inbox_only | boolean | – | When true with action=list, list Inbox interviews (no project). Ignored if project_id is set. |
| limit | integer | – | For list: max interviews (default 20, max 100). For transcript: max characters (default 4000, max 20000). |
| notes_mode | string | – | List only. none (default) = omit notes body. full = researcher notes (truncated on list). Use summary when notes are not required. |
| offset | integer | – | For list: skip count. For transcript without around_chunk_index: character offset (default 0). |
| project_id | string | – | Optional project UUID to filter list (alias: folder_id). |
| radius_chars | integer | – | Transcript only with around_chunk_index: chars before/after chunk match (default 1500, max 8000). |
| summary_mode | string | – | List only. brief (default) = short # Summary for triage/rename. full = all summary_fragments (profile/tools/pains/other_topics) when brief is insufficient. |
No output schema declared.
No examples provided.
jtbd_edit JTBD Edit ~168
Edit JTBD graph: extract_interview, move_interview, create_segment, fill_in job, update_job, delete_job.
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | – |
| category | string | – | – |
| folder_id | string | – | – |
| human_edited | boolean | – | – |
| i_want_to | string | – | – |
| interview_id | string | – | – |
| job_id | string | – | – |
| language | string | – | Job tree language for extract_interview (en or ru). Defaults to en. Quotes stay in the interview language. |
| name | string | – | – |
| project_id | string | – | – |
| segment_id | string | – | – |
| so_that | string | – | – |
| to_segment_id | string | – | – |
| when | string | – | – |
No output schema declared.
No examples provided.
jtbd_read JTBD Read ~112
Read JTBD job graph segments and trees. action=list_segments needs folder_id/project_id. action=get_tree needs segment_id or interview_id. CITATION REQUIRED: cite job quotes as ["text"](interview_url).
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | – |
| folder_id | string | – | Project/folder UUID (list_segments). |
| interview_id | string | – | Interview UUID (get_tree). |
| project_id | string | – | Alias for folder_id. |
| segment_id | string | – | Segment UUID (get_tree). |
No output schema declared.
No examples provided.
mcp_confirm_upload Confirm Upload ~191
App-only: confirm a completed R2 upload (single PUT or multipart) for an Inbox interview. Audio/video is enqueued for transcription (STT + diarization). Text (.txt/.md) and PDF are stored and marked ready immediately — no transcription.
| Name | Type | Req | Description |
|---|---|---|---|
| filename | string | yes | Original filename. |
| interview_id | string | yes | Interview UUID from prepare. |
| language | string | yes | STT language for audio/video (e.g. en, ru, nl). Not used for text/PDF (no transcription). |
| multipart_parts | array | – | Completed parts (part_number + etag) when using multipart. |
| multipart_upload_id | string | – | Multipart upload id — complete assembly before confirm. |
| object_key | string | yes | R2 object key from prepare. |
| size_bytes | integer | yes | File size in bytes. |
| title | string | – | Optional title to apply before confirm. |
No output schema declared.
No examples provided.
mcp_prepare_upload Prepare Upload ~142
App-only: create an Inbox interview and return a presigned R2 upload URL (or multipart upload_id for large files). Pass interview_id (+ upload_id for multipart) to resume without a new card.
| Name | Type | Req | Description |
|---|---|---|---|
| content_type | string | – | MIME type for the PUT (optional). |
| filename | string | yes | Original filename. |
| interview_id | string | – | Optional: existing empty interview UUID — resume upload without creating a new card. |
| size_bytes | integer | yes | File size in bytes. |
| title | string | – | Optional interview title (defaults to sanitized filename). |
| upload_id | string | – | Optional multipart upload id from a previous prepare (resume). |
No output schema declared.
No examples provided.
mcp_sign_upload_parts Sign Upload Parts ~89
App-only: return presigned R2 URLs for one or more multipart upload parts (resume-safe).
| Name | Type | Req | Description |
|---|---|---|---|
| interview_id | string | yes | Interview UUID from prepare. |
| object_key | string | yes | R2 object key from prepare. |
| part_numbers | array | yes | Part numbers to sign (1-based, max 20). |
| upload_id | string | yes | Multipart upload id from prepare. |
No output schema declared.
No examples provided.
projects_edit Projects Edit ~83
Create or rename projects. action=create needs name; action=rename needs id and name. Delete is not supported yet.
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | Edit action. |
| description | string | – | Optional project description (create/rename). |
| id | string | – | Project UUID (required for rename). |
| name | string | – | Project name (required for create and rename). |
No output schema declared.
No examples provided.
projects_read Projects Read ~91
Read existing research folders. Not for a new startup idea or office hours — call get-skills first. action=list returns projects for the authenticated user.
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | Read action. Currently only list. |
| limit | integer | – | Max number of projects to return (default 50, max 200). |
| offset | integer | – | Number of projects to skip before returning results (default 0). |
No output schema declared.
No examples provided.
search Search ~264
Semantic search for evidence / counter-evidence after you have interview context (e.g. from list/summary). Optional interview_id scopes search to one interview and returns smaller text windows. Returns matching_chunks[{chunk_index, text, similarity, start_seconds?, url}]. CITATION REQUIRED: actively cite hits to the user as markdown ["verbatim quote from text"]({base_url}/project/interview/{id}?t={seconds}) using each chunk's url field from the tool result (already absolute; includes ?t= when start_seconds is present). Prefer quoting matching_chunks over paraphrase. Expand with interviews_read action=transcript around_chunk_index when a wider quote window is needed.
| Name | Type | Req | Description |
|---|---|---|---|
| chunks_limit | integer | – | Max matching chunks per interview (default 3 corpus / 8 when interview_id set; max 10 / 20). |
| chunks_offset | integer | – | Skip this many top chunks per interview (default 0). |
| interview_id | string | – | Optional interview UUID — search only inside this interview; returns smaller chunk windows. |
| limit | integer | – | Max number of interviews to return (default 5, max 10). Ignored when interview_id is set. |
| query | string | yes | Natural language search query (hypothesis / claim to evidence). |
No output schema declared.
No examples provided.
upload_interview Upload Interview ~106
Opens the in-Claude MCP Apps widget "Upload To Zernote" so the user can drop a file into Inbox in this chat (audio/video max 2GB; text .txt/.md or PDF max 50MB). Use when the user wants to upload/add an interview or get started on an empty account — this is the usual ingest path in Claude. Audio/video starts transcription; text/PDF become ready immediately (no speaker diarization). Claude can name interviews after upload.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
What is the Zernote MCP server?
Zernote is an MCP server listed in the public MCP registry as com.zernote/zernote. User research workspace to transcribe interviews and turn conversations into insights. This page covers its hosted endpoint (https://zernote.com/mcp).
Is the Zernote MCP server safe to use?
Zernote scores 73 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Zernote MCP server expose?
Zernote exposes 14 tools: get-skills, projects_read, projects_edit, interviews_read, interviews_edit, and 9 more. Their descriptions and schemas cost roughly 3,043 tokens of context every time the server is loaded.
Does the Zernote MCP server require authentication?
Yes. Zernote asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the Zernote MCP server still maintained?
Zernote is still listed as active in the MCP registry. We last reached this channel on 27 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.