Evermuse

Name: Evermuse
Author: Usermuse

by Usermuseversion 1.0.1i★ –iRuns in the cloud

Registry namecom.evermuse/evermuse

Install

Overview

Description from the maker (original English)

Search your customer interviews, calls, feedback, competitor intel and roadmap from any AI agent.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Search & AI memory

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 0 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://api.evermuse.com/api/mcp

Run this in your terminal

claude mcp add --transport http evermuse https://api.evermuse.com/api/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "evermuse": {
      "url": "https://api.evermuse.com/api/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "evermuse": {
      "type": "http",
      "url": "https://api.evermuse.com/api/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://api.evermuse.com/api/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

! Caution
Maker matches the repo
The publisher (evermuse.com) is not the repo owner (Usermuse); someone else may have listed it
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Search & AI memoryi

More stars than 0% of the other 7232 servers in this category
Published to the registry more recently than 54% of the other 7232 servers in this category
Basic checks equal to or better than 37% of the other 7232 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Evermuse safe?

It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 31 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

by upstash

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

Computer or cloud★ 64,224MITUpdated 3 days ago

Install

Codebase Memory

by DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 20 days ago

Install

Exa

by exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated 44 days ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Evermuse for Claude Code and Cursor

Make your AI agent speak with the voice of your customers.

Evermuse is a plugin for Claude Code and Cursor that turns everyday product work — specs, dev plans, research, roadmaps, gap analyses, PR reviews — into deliverables grounded in real customer evidence. Instead of plausible-sounding generic answers, you get verbatim quotes, real needs, and actual pain points, each with a source link back to the conversation it came from. And the important things you produce get saved back into Evermuse, so your knowledge base compounds.

It combines proven PM/research methods (adapted from pm-skills) and spec-driven-development discipline (adapted from spec-kit) with the Evermuse MCP, which searches your recorded calls, interviews, and feedback.

What changes after you install it

Ask *"what do customers think about our onboarding?"* and instead of a guess you get:

Short answer: Onboarding friction centers on manual data entry — 7 mentions across 5 accounts, mostly frustrated.

### Theme 1 — Re-keying data by hand (7 mentions / 5 accounts)

> "We lose half a day every week re-keying this into the spreadsheet." — Dana K., Acme onboarding call, 12 May 2025 · View in Evermuse [^1]

Every spec gets a Customer Evidence section. Every dev plan opens with the customer quotes that justify it. Every PR review checks the diff against what customers literally asked for. That's the difference.

Install

Claude Code

# Add this repo as a plugin marketplace, then install the plugin

claude plugin marketplace add Usermuse/em-plugin claude plugin install evermuse@evermuse

Or point at a local checkout during development:

claude plugin marketplace add /path/to/em-plugin

claude plugin install evermuse@evermuse

Cursor

Install from the Cursor Marketplace, or add just the MCP server with a one-click deeplink:

Add Evermuse to Cursor

The Cursor plugin ships the skills and the MCP server.

How invocation differs between the two clients. In Claude Code, skills auto-activate — you describe the task in plain language and the right skill fires. Cursor works differently: skills are invoked explicitly, by typing /skill-name in chat or @skill-name to attach one as context. So in Cursor the skill name *is* the command:

Claude Code	Cursor
`/evermuse:spec`	`/write-feature-spec`
`/evermuse:research`	`/customer-research`
"write a spec for bulk CSV export" (auto-activates)	`/write-feature-spec` (explicit)

Because Cursor won't auto-fire a skill, the short aliases matter more there, not less — so Cursor gets its own command layer in cursor-commands/:

/spec        /dev-plan     /research     /setup      /save

/discover /brainstorm /pricing /strategy /plan-launch …28 in total

Each carries Cursor's name / description frontmatter. The Claude versions in commands/ use a different frontmatter shape plus $ARGUMENTS, which Cursor does not support, so the two directories are kept separate and each client reads its own.

Six Claude commands are deliberately not duplicated — business-model, gap-analysis, release-notes, review-pr, test-scenarios and value-proposition share a name with a skill that already does the same job, so in Cursor you invoke those as /gap-analysis etc. directly and a duplicate command would only make the / list ambiguous.

Authenticate the MCP

The plugin bundles the Evermuse MCP server (https://api.evermuse.com/api/mcp). Before the skills can ground anything, connect it:

Claude Code — OAuth (recommended): run /mcp in an interactive session and authorize evermuse.
Cursor — OAuth: open Settings → MCP and authorize evermuse. Cursor registers itself dynamically (DCR), so there's no client ID to configure.
API key (either client): add an Authorization header for the evermuse server in your MCP settings.

Then run `/evermuse:setup` to pick your Product and confirm grounding works. (A Product is required for every Evermuse call; a Project like Discovery/Support/Sales is optional and only needed when you're focused on one research effort.)

Quickstart

/evermuse:setup                      # connect + pick your product

/evermuse:research what do customers think about pricing? /evermuse:spec bulk CSV export for the reporting page /evermuse:dev-plan specs/bulk-csv-export/spec.md /evermuse:review-pr 482

The doctrine (how grounding works)

Every skill follows Ground → Work → Cite → Save:

Ground — verify the right Product, then run 2–4 differently-worded searches (declaring a *nature*: evidence = customer voice, context = market, guidance = company strategy) plus verbatim quotes.
Work — apply the skill's method, shaped by what the evidence says.
Cite — every customer-derived claim carries a source badge and a [^n] footnote.
Save — offer to persist the deliverable back into Evermuse via add_source.

The full doctrine lives in the using-evermuse skill, which every other skill defers to.

The MCP tools

The submitted default cloud OAuth configuration exposes these 27 tools:

Group	Tools
Read-only: guidance	`find_skills` · `read_skills`
Read-only: product context	`get_products` · `get_product_summary` · `get_projects`
Read-only: workflow (start here)	`customer_research` · `create_prd` · `write_brief` · `write_feature_spec` · `user_personas` · `user_stories` · `competitor_analysis` · `summarize_conversation`
Read-only: evidence and sources	`search` · `view_item` · `find_sources` · `read_source`
Read-only: internal assets	`list_competitors` · `get_competitor_capabilities` · `get_opportunities` · `get_shaping_notes` · `read_shaping_note`
Write: additive	`add_source` · `add_signals` · `create_shaping_note`
Write: overwrites existing data (destructive)	`update_signals` · `update_shaping_note`

Workflow tools are read-only despite their imperative names: create_prd creates nothing — you write the document, and it is stored only if you then call a write tool.

Not every workspace gets exactly this list. Workspaces with shaping writes disabled don't get create_shaping_note / update_shaping_note, local-storage workspaces get only the guidance tools from the cloud endpoint, and other feature flags can add tools. tools/list is the authority for what a given workspace is served.

A workflow tool runs the job's first grounding step and returns the methodology, so start from one when it matches the task rather than reaching straight for search. Every product-scoped call takes product_id as a parameter — there is no session to switch.

Tool annotations

Every tool sets all four MCP tool annotations explicitly to true or false, plus a title.

Tool(s)	readOnlyHint	destructiveHint	idempotentHint	openWorldHint	Why
The 22 read-only tools: `find_skills` · `read_skills` · `get_products` · `get_product_summary` · `get_projects` · `customer_research` · `create_prd` · `write_brief` · `write_feature_spec` · `user_personas` · `user_stories` · `competitor_analysis` · `summarize_conversation` · `search` · `view_item` · `find_sources` · `read_source` · `list_competitors` · `get_competitor_capabilities` · `get_opportunities` · `get_shaping_notes` · `read_shaping_note`	`true`	`false`	`true`	`false`	Retrieve guidance or authorized workspace data. They never create, overwrite, delete or publish the user's sources, signals or notes.
`add_source`	`false`	`false`	`false`	`true`	Adds a source to the caller's workspace and queues ingestion; the response confirms submission, not completion. Meeting imports can fetch a caller-supplied public HTTPS media URL (`media.url`), which is why it is open-world. Meeting and communication imports deduplicate on `external_source` + `external_id`, but note, document and spreadsheet modes don't, so a repeated call can create another source. It never overwrites an existing source.
`add_signals`	`false`	`false`	`true`	`false`	Adds up to 100 signals to an existing source. Replays are deduplicated on source, type and content, so repeating a call creates nothing new.
`create_shaping_note`	`false`	`false`	`false`	`false`	Creates a new shaping note and never modifies an existing one. Repeating the call creates a second note.
`update_signals`	`false`	`true`	`false`	`false`	Overwrites the passed fields on up to 100 existing signals (`null` clears an optional title or attribution). Signals have no version history. Repeating a title, content or type update advances the embedding revision and queues embedding work again, so a repeat has further effects.
`update_shaping_note`	`false`	`true`	`false`	`false`	Replaces each passed field outright, `content` and `tags` included. Every successful update, a repeat included, creates a new version, so it is not idempotent. Version history allows recovery, but the current fields are still overwritten.

Idempotency here means a repeated identical call has no further effect, not that the data can't change between calls. Every tool except add_source works only on Evermuse guidance or the caller's own workspace data (hosted storage and embedding services included); add_source can also download a media file from a URL the caller supplies. The third-party proxy tools (find_tool / call_tool) are not served to OAuth clients. No tool on this surface renders UI.

Commands

Cursor — 28 plain-Markdown commands in cursor-commands/. Same short names as below, without the evermuse: prefix (/spec, /dev-plan, /research). The six that duplicate a skill name are omitted; invoke those as /gap-analysis, /review-pr etc. directly.

Claude Code — the /evermuse:* commands in commands/, listed here:

Flagship: /evermuse:setup · spec · dev-plan · gap-analysis · review-pr · research · release-notes · save

Discovery & execution: discover · brainstorm · triage-requests · interview · write-prd · write-stories · plan-okrs · transform-roadmap · test-scenarios · pre-mortem · red-team-prd · meeting-notes · ship-check

Strategy, research & GTM: strategy · business-model · value-proposition · market-scan · pricing · research-users · competitive-analysis · analyze-feedback · plan-launch · growth-strategy · battlecard · market-product · north-star

Skills also auto-activate when you describe the task in plain language ("write a spec for…", "what are customers saying about…", "review this PR") — you don't have to remember command names.

Skills catalog

Foundation: using-evermuse (the doctrine + MCP mechanics every skill uses)
Flagships: write-feature-spec, development-plan, gap-analysis, review-pr, customer-research
Discovery: brainstorm-ideas, deep-dive, assumptions, prioritize-features, analyze-feature-requests, opportunity-solution-tree, interview-script, summarize-conversation
Strategy: product-strategy, product-vision, value-proposition, business-model, pricing-strategy, strategy-frameworks, strategy-red-team
Execution: create-prd, user-stories, brainstorm-okrs, outcome-roadmap, release-notes, test-scenarios, shipping-artifacts, daily-brief
Market research: user-personas, segmentation, customer-journey-map, market-sizing, `c

Only the beginning is shown; read the rest in the repo

Evermuse

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

Evermuse for Claude Code and Cursor

What changes after you install it

Install

Claude Code

Cursor

Authenticate the MCP

Quickstart

The doctrine (how grounding works)

The MCP tools

Tool annotations

Commands

Skills catalog