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ZeroWidth Compass

REMOTE · API.ZEROWIDTH.AI

Read and update your Compass map: pages, changes, opportunities and interviews.

Available components

+3 this week 73 Trust /100

Last scanned (1 hour ago)

Scores higher than 64% of remote servers

Reachable. Last reached 24 Oct 2026.

Category Productivity and Notes

Trust breakdown (7 categories)

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 Security57
Transport & Reachability100
Schema Quality & AI Usability86
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (excellent).Pass
  • Tool/resource definitions use about 17388 tokens (~88/item across 196 items; 62 tools + 134 resources), lean.Pass
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management53
  • Stability observed for 16 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage97
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 90% 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
  • All 4 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
  • An AI judge read all 63 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Changelog

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.

  • 23 Oct 26 0
    • Tool “compass_gaps_resolve” rewrote its description, which is the text the model reads security
    • Tool “compass_interviews_create” rewrote its description, which is the text the model reads security
    • Tool “compass_map_view” rewrote its description, which is the text the model reads security
    • Tool “compass_step_claims_propose” rewrote its description, which is the text the model reads security
    • Tool “search_docs” rewrote its description, which is the text the model reads security
    • New tool “compass_role_story” functional
    • New tool “compass_roles_overview” functional
    • “compass_opportunities_mark_implemented” added an optional parameter “applyToMap” cosmetic
  • 22 Oct 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

  • 20 Oct 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

  • 18 Oct 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

  • 17 Oct 26 0
    • Tool “compass_step_claims_propose” rewrote its description, which is the text the model reads security
    • Tool “search_workspace” rewrote its description, which is the text the model reads security
    • “search_workspace” added an optional parameter “folderId” cosmetic
    • “compass_links_create” reworded the description of “sourceId” cosmetic
    • “compass_links_create” reworded the description of “sourceKind” cosmetic
    • “compass_step_claims_propose” reworded the description of “sourceId” cosmetic
    • “compass_step_claims_propose” reworded the description of “sourceKind” cosmetic
    • “compass_step_measures_propose” reworded the description of “sourceId” cosmetic
    • “search_workspace” reworded the description of “kinds” cosmetic
    • “search_workspace” reworded the description of “q” cosmetic
  • 16 Oct 26 +1
    • Tool “compass_inbox_list” rewrote its description, which is the text the model reads security
    • Tool “compass_links_create” rewrote its description, which is the text the model reads security
    • Server version: 0.0.0 → 1.0.0 functional
  • 14 Oct 26 +1
    • Tool “compass_priority_steps_find” rewrote its description, which is the text the model reads security
    • Tool “compass_step_claims_propose” rewrote its description, which is the text the model reads security
    • Tool “compass_transformations_make_change” rewrote its description, which is the text the model reads security
    • New resource “prism/synthetic-panels” functional
    • New tool “compass_transformations_respond” functional
    • “compass_interviews_create” reworded the description of “focusPrompt” cosmetic
  • 13 Oct 26 0
    • Tool “compass_step_claims_propose” rewrote its description, which is the text the model reads security
    • Tool “compass_workflow_steps” rewrote its description, which is the text the model reads security
    • New tool “compass_priority_steps_find” functional
    • New tool “compass_transformations_get” functional
    • New tool “compass_transformations_make_change” functional
    • New tool “compass_transformations_read” functional
    • Tool “compass_step_claims_propose” changed its title: Propose who does a workflow's steps → Propose who does a workflow's steps and what in cosmetic
Diagnostics

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 24 Oct 2026 · Probed https://api.zerowidth.ai/mcp/x/compass

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=api.zerowidth.ai CN=WR3,O=Google Trust Services,C=US 20 Sept 2026 19 Dec 2026 RSA 2048 SHA256-RSA ef3f24a330d02ed80992778a6ead44bf
SANs: api.zerowidth.ai
CN=WR3,O=Google Trust Services,C=US (CA) CN=GTS Root R1,O=Google Trust Services LLC,C=US 13 Dec 2023 20 Feb 2029 RSA 2048 SHA256-RSA 7ff005a91568d63abc22861684aa4b5a
CN=GTS Root R1,O=Google Trust Services LLC,C=US (CA) CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE 19 Jun 2020 28 Jan 2028 RSA 4096 SHA256-RSA 77bd0d6cdb36f91aea210fc4f058d30d

Background: What to check on a remote MCP endpoint →

DNSSEC insecure

Validation of api.zerowidth.ai. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
ai. present 3799 8 Verified
zerowidth.ai. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://api.zerowidth.ai/mcp/x/compass Verified 200
http (plaintext) http://api.zerowidth.ai/mcp/x/compass HTTPS enforced
MCP tools · 62 exposed · ~13,788 tokens

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 →

Tool Tokens
compass_transformations_read ~86

Starts reading the five levels for a PRIORITY in the background (a minute or two). Needs at least one kept step that impacts the priority. A read under way is left to finish. Check back with compass_transformations_get.

NameTypeReqDescription
priorityPageIdstringyesThe PRIORITY page id.
workspacestring–Workspace slug. Ignored for workspace API keys.

No output schema declared.

No examples provided.

compass_transformations_respond ~212

Records what someone told you about one level of a PRIORITY's current transformations, in their words or a faithful summary: that they already do it, what rules it out, a system that isn't ready, work still done on paper, and so on. Compass works out what it means in the background: a label for the level, facts kept on the steps they're about (every later reading of those workflows sees them), and open questions to confirm. Then it reads the priority again. Use it whenever a conversation settles something about a level, so it lands on the priority's page, not only in this chat.

NameTypeReqDescription
levelintegeryes1 Assist, 2 Automate, 3 Re-form, 4 Invert, 5 Dissolve.
priorityPageIdstringyesThe PRIORITY page id.
saidstringyesWhat's true about the level, as the person said it.
workspacestring–Workspace slug. Ignored for workspace API keys.

No output schema declared.

No examples provided.

compass_workflow_learning ~166

Newest first: steps added to or dropped from the diagram (and by whom), and claims about who does what or what a step takes — said, corrected (with what they replaced), withdrawn, or accepted from a proposal — each with its source. This is when we LEARNED things; when they were true is each claim's validFrom/validTo. Use it to brief someone on what changed in the picture, or to see what an interview added.

NameTypeReqDescription
pageIdstringyesThe WORKFLOW page id.
since––Only what was learned on or after this date.
workspacestring–Workspace slug. Personal tokens with no default workspace MUST pass this; tokens with a default can override per call. Ignored for workspace API keys.

No output schema declared.

No examples provided.

compass_workflow_rollup ~340

Per run and per month: hands-on minutes, waiting minutes, labor cost (hands-on time priced through each role's hourly rate), and hard costs, each as a low–high range, with every step's share and its gates (approvals, handoffs, re-keying, rework). A step that is itself a workflow uses that workflow's roll-up unless it has its own estimate. `coverage` says how many steps are timed — always say how much of the total rests on estimates before quoting it, and never present a range as one number. `unpricedRoles` are roles doing timed work with no hourly rate; their time counts and its cost doesn't. Where the waiting dwarfs the hands-on time, or a gate rarely sends anything back, is usually where the improvement is. `at` reads the estimates as of a date; `variantId` rolls up one variant.

NameTypeReqDescription
at––How things were on this date (YYYY-MM-DD). Default today.
changeIdsarray–Project the workflow as these changes would leave it (ids from compass_scenario_changes). Compare with a call without them: before vs after, what stays human, overlapping changes.
knownAt––Count only what had been said by this date — the picture as we knew it then.
pageIdstringyesThe WORKFLOW page id.
variantIdstring–A variant id from compass_workflow_steps.
workspacestring–Workspace slug. Personal tokens with no default workspace MUST pass this; tokens with a default can override per call. Ignored for workspace API keys.

No output schema declared.

No examples provided.

compass_workflow_steps ~251

Every step in a WORKFLOW page's steps diagram, in diagram order, with its phase, whether it is itself a workflow (subWorkflowPageId), and who the map says owns, does, approves, is consulted on, or doesn't do it, and `uses`: the systems or documents it's done in. `unknown: true` means nothing that counts says who does the step or what it's done in — those are the questions worth asking in an interview. A step with `uses` and nobody on it is one a system runs; don't ask who does it. `disputed` lists roles or people with conflicting claims; ask about those rather than picking a side. `proposals` counts claims waiting for review. `variants` are named subsets of the steps ("rush job", "enterprise client"); each step lists the variants it belongs to. Returns no steps when the workflow has no diagram yet (compass_process_diagram_ensure makes one).

NameTypeReqDescription
pageIdstringyesThe WORKFLOW page id.
workspacestring–Workspace slug. Personal tokens with no default workspace MUST pass this; tokens with a default can override per call. Ignored for workspace API keys.

No output schema declared.

No examples provided.

entity_tags_browse ~149

Without a tag: every tag in use across the workspace with how many entities carry it, most-used first — the vocabulary the team already organizes by. With a tag: everything filed under it across every tool, each with its kind, id, title, and path. Use it to reuse existing labels instead of inventing near-duplicates, and to answer 'show me everything about X' when X is a label.

NameTypeReqDescription
tagstring–A tag to expand into its items. Omit to list tags.
workspacestring–Workspace slug. Personal tokens with no default workspace MUST pass this; tokens with a default can override per call. Ignored for workspace API keys.

No output schema declared.

No examples provided.

entity_tags_get ~130

Returns the tags on a batch of entities of one kind — the labels galleries organize by. Ids come from the kind's list/get tool or from search_workspace. Use it before entity_tags_set so you replace the full set knowingly, and to answer 'what is this filed under'. Entities the user can't see are omitted.

NameTypeReqDescription
entityKindstringyesWhich kind the ids belong to.
idsarrayyes–
workspacestring–Workspace slug. Personal tokens with no default workspace MUST pass this; tokens with a default can override per call. Ignored for workspace API keys.

No output schema declared.

No examples provided.

entity_tags_set ~173

Replaces the FULL tag set on one entity (an empty list clears it). Read the current tags with entity_tags_get first and pass the merged list — this is not additive. Tags are lowercase letters, numbers, spaces, and hyphens; prefer labels already in use (entity_tags_browse) so the workspace's vocabulary stays small. The id comes from the kind's list/get tool or search_workspace.

NameTypeReqDescription
approvalIdstring–Approval id from a prior needs_confirmation response. Omit on the first call.
entityIdstringyes–
entityKindstringyes–
tagsarrayyes–
workspacestring–Workspace slug. Personal tokens with no default workspace MUST pass this; tokens with a default can override per call. Ignored for workspace API keys.

No output schema declared.

No examples provided.

get_doc ~73

Fetch the full Markdown body of a specific docs page by its slug. Use this after `search_docs` when the user needs the complete content of a page. No authentication required.

NameTypeReqDescription
slugstringyesPage slug. Accepts 'compass/api', '/compass/api', or 'docs/compass/api'.

No output schema declared.

No examples provided.

list_docs ~75

Enumerate all available docs pages, optionally filtered by product (e.g. 'compass', 'legal', 'overview'). Use this to discover what slugs exist before calling `get_doc`. No authentication required.

NameTypeReqDescription
productstring–Optional product slug filter (e.g. 'compass', 'legal', 'overview').

No output schema declared.

No examples provided.

search_docs ~111

Search ZeroWidth product documentation. Returns matching pages with title, slug, public URL, and a query-relevant snippet. Use this when the user asks about a ZeroWidth product (Compass, Workbench, Caliper, Prism, Ledger, Napkin, the assistant), an API behavior, or a policy. No authentication required — the docs corpus is public.

NameTypeReqDescription
limitinteger–Max number of results. Defaults to 10.
querystringyesSearch query — keywords or natural-language phrase.

No output schema declared.

No examples provided.

search_workspace ~431

Finds anything in the workspace in one call — uploaded files (searching the text inside them), folders, Workbench flows, shims, knowledge bases and tasks, Compass pages and changes, Caliper datasets, evals, rubrics, reviews, specs and sources, Ledger entries, Napkin sketches, decks, docs, sheets, diagrams and interfaces. The same search the person uses in Home. Use it FIRST whenever the user mentions something without saying where it lives ('the SOW', 'the dispatch interviews', 'that invoice'). The query is words in any order: each word must appear in the thing's name, its tags, the names of the folders it's filed under, or the text inside it — so 'northwind sow' finds the SOW filed in the Northwind folder, and 'dispatch interview' finds 'Dispatcher interview 1.md'. Results are ranked best first. Each hit carries its id, kind, path (for a link), folderPath (where it's filed, top-down), tags, and a snippet when the words were found inside it rather than in its name — say where a thing lives using folderPath. A file's id feeds workspace_files_read; other ids feed the kind's *_get tool. Pass folderId to search only inside one folder and everything under it. If nothing comes back, try fewer or different words before telling the user it doesn't exist. Results only include what the user can see, and only kinds this token may read.

NameTypeReqDescription
folderIdstring–Only search inside this folder and the folders under it (ids from workspace_folders_browse or a folder hit).
kindsarray–Restrict to these kinds (file, folder, flow, page, doc, dataset, …). Omit to search everything.
limitinteger––
qstringyesWords, any order, case-insensitive. Fewer words find more.
workspacestring–Workspace slug. Personal tokens with no default workspace MUST pass this; tokens with a default can override per call. Ignored for workspace API keys.

No output schema declared.

No examples provided.

Install

How do I install the ZeroWidth Compass MCP server?

ZeroWidth Compass is a hosted endpoint at https://api.zerowidth.ai/mcp/x/compass, 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 · api.zerowidth.ai

# add to Claude Code
claude mcp add --transport http ai-zerowidth-compass 'https://api.zerowidth.ai/mcp/x/compass'
Common questions

What is the ZeroWidth Compass MCP server?

ZeroWidth Compass is an MCP server listed in the public MCP registry as ai.zerowidth/compass. Read and update your Compass map: pages, changes, opportunities and interviews. This page covers its hosted endpoint (https://api.zerowidth.ai/mcp/x/compass).

Is the ZeroWidth Compass MCP server safe to use?

ZeroWidth Compass 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 ZeroWidth Compass MCP server expose?

ZeroWidth Compass exposes 62 tools: search_docs, get_doc, list_docs, compass_pages_list, compass_pages_search, and 57 more. Their descriptions and schemas cost roughly 13,788 tokens of context every time the server is loaded.

Does the ZeroWidth Compass MCP server require authentication?

No. We connected to ZeroWidth Compass without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the ZeroWidth Compass MCP server still maintained?

ZeroWidth Compass is still listed as active in the MCP registry. We last reached this channel on 24 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.