Query Markup Documents - On-device hybrid search for markdown files with BM25, vector search, and LLM reranking
Nothing to run from here
core.blue is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
10
tools declared
—
trust score
remote
at its publisher
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calls last 7d
What it does
Private, self-describing memory for agents: one house per customer, on a machine of its own.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http core-blue-mcp https://mcp.core.blue/
# 2 — ask your agent for something these tools do
# search_library, open_sandbox, about and 7 more
core.blue costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
COAll 1 server
core1 server
1 category
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
Claude Codedeclared by this listing
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http core-blue-mcp https://mcp.core.blue/Reconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it answers at its publisher’s own address: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it writes
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
What you approve
10 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
Search the manual by your own words. Returns up to 'limit' topics ranked by relevance, each with slug, title, summary, tags and the slugs to read next. The manual is small: 'about' lists every topic, and you may not need a search at all.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| query | string | yes | What you want to know, as words or a question. |
| limit | integer | no | Maximum number of hits, 1 to 20, default 5. |
Call this to try a house yourself before anyone decides. It opens a throwaway house for a few hours: a real house with the kernel of Atlantis, on core.blue's server, with no account, no key and no person involved. Returns the addresses of its doors (connect to 'modeller' with your MCP client and call overview), when it ends, and its limits. Whoever has the addresses can use the house, so keep them
No parameter schema on file.
What core.blue is, in a form you can paste into a report: the product in one paragraph, what is live and what is not, what to call next, and every topic of the manual with a summary. Call this first.
No parameter schema on file.
Call this when the person you act for asks what a house costs. The offer as data: what each size costs per month and whom it is meant for, the one-off price of the 14-day test, the price of additional volume, how model supply is charged, the terms, an example of the prices with tax, and what is never charged. 'undecided' lists the fields that are null because they are not decided yet; any other nu
No parameter schema on file.
Tell the operator how it went, before you leave. Four questions, each optional, at least one answered, each at most 2000 characters. It is read by people at the next evaluation and deleted afterwards; send nothing secret.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| noticed | string/null | no | What did you notice? |
| bothered | string/null | no | What bothered you? |
| better | string/null | no | What could we do better? |
| missing | string/null | no | Which features are missing? |
Ask for a house on its own VM for the person you act for. No house can be had yet: while about says 'desk: waiting-list', this puts the person on the waiting list, builds nothing and costs nothing; while it says 'desk: closed', it answers 'accepted: false' and sends nothing. This sends an e-mail to a person: call it only when they know it is coming. They receive one mail with one link and confirm
| Parameter | Type | Required | Notes |
|---|---|---|---|
| string | yes | E-mail address of the person who will confirm and own the house. One address, name@domain.tld. | |
| size | string | no | Size of the machine: 'economy' (small VM) or 'premium' (larger VM). Both run the same software. Default 'economy'. |
| language | string | no | Language of the mail and of the page the person confirms on: 'en' or 'de'. Default 'en'. |
Call this once you know what the person you act for needs: whether a house fits, which size, what it costs per month, and a report in Markdown you can pass on. It advises against a house where one is the wrong choice. Name every need that applies, from this vocabulary. For a house: work_outlives_the_agent, corrections_must_stay_visible, sources_matter, own_vocabulary, confidential_material. Agains
| Parameter | Type | Required | Notes |
|---|---|---|---|
| needs | array/null | no | The needs that apply, as words of the vocabulary. Omit to get the vocabulary. |
| data_gb | number/null | no | How much material there is, in gigabytes, if you know. Used to calculate additional volume. |
| in_your_words | string/null | no | Optional: what the person asked you for, in one or two sentences of your own. It is recorded so that we learn which questions we did not foresee. It is not interpreted and does not change the answer. |
| language | string | no | Language of 'report', the text for the person: 'en' or 'de'. Default 'en'. Every other field stays English. |
Read one topic of the manual in full by its slug (from about or search_library). The body is Markdown; 'see_also' lists the slugs to read next; 'sha256' proves what you read.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| slug | string | yes | The topic's slug, e.g. 'getting-a-house'. |
The state of a house request or house by its ticket id: requested, confirmed, expired, declined; later building, trial, licensed, dormant, exported, deleted. Says what to do next, and the address once the house exists. Ask no more than once an hour.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| ticket_id | string | yes | The ticket id returned by request_house. |
End your sandbox now: the house and everything in it is deleted, and the place is free for the next agent. Please answer the four questions of leave_feedback here as well, each optional: what you noticed, what bothered you, what could be better, what is missing.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| lease | string | yes | The lease that open_sandbox returned: 'sb_' and 26 characters. |
| noticed | string/null | no | What did you notice? |
| bothered | string/null | no | What bothered you? |
| better | string/null | no | What could we do better? |
| missing | string/null | no | Which features are missing? |
Free
$0 forever
- Every tool — any call limit is its publisher’s, not ours
- No card, and mcprush charges nothing for it
- Runs at its publisher’s own address — this marketplace is not in the path
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install core.blue or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
—Grade not published
No rule-by-rule report on file for this release
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
This listing is an address its publisher runs, and you connect to it directly — this marketplace is not in the path. The scanner reads packages and public source, and an address is neither. So there is no grade — not a withheld one, an unmeasured one.
Release history
This is an address its publisher runs: which release it serves is theirs to choose, so there is nothing here to pin. The history below is for reading; the current release on file is 0.2.1.
0.2.1
undated
latestNo release note was published with this version.
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no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish core.blue can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.