Conceptio Search

Name: Conceptio Search
Author: 0x923041-dotcom

by 0x923041-dotcomversion 0.3.14i★ –iRuns on your computer

Registry nameio.github.0x923041-dotcom/conceptio-search

Install

Overview

Description from the maker (original English)

Search 1M+ open-access papers, standards, and case law from an 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 checksi1 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 on your computer
Transport: stdio
Category: Search & AI memory
You need to fill in: CONCEPTIO_API_KEY

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: CONCEPTIO_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "conceptio-search": {
      "command": "uvx",
      "args": [
        "conceptio-search",
        "mcp"
      ],
      "env": {
        "CONCEPTIO_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add conceptio-search --env CONCEPTIO_API_KEY=your-value -- uvx conceptio-search mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "conceptio-search": {
      "command": "uvx",
      "args": [
        "conceptio-search",
        "mcp"
      ],
      "env": {
        "CONCEPTIO_API_KEY": "your-value"
      }
    }
  }
}

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": {
    "conceptio-search": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "conceptio-search",
        "mcp"
      ],
      "env": {
        "CONCEPTIO_API_KEY": "your-value"
      }
    }
  }
}

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.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

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

Values you fill in

CONCEPTIO_API_KEY secret required env
Conceptio API key (Free, Dev, Pro or Enterprise) from your profile at https://www.conceptio.app. Required because an MCP client cannot run the CLI's interactive auth.

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

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

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 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account 0x923041-dotcom, which owns the repo
… 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 applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

More stars than 0% of the other 5653 servers in this category
Published to the registry more recently than 57% of the other 5653 servers in this category
Basic checks equal to or better than 100% of the other 5653 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 Conceptio Search safe?

It passed 1 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?

You need to fill in: CONCEPTIO_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.3.14) 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. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

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

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Computer or cloud★ 64,224MITUpdated yesterday

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Codebase Memory

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

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Exa

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

Runs in the cloud★ 5,213MITUpdated 2 months 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.

conceptio-search

Search 1M+ open-access documents — papers, standards, textbooks, and case law — right from your terminal or your AI agent.

conceptio-search is a CLI and Model Context Protocol (MCP) server for the Conceptio Open Knowledge Archive — 1M+ open-access documents from 500+ living sources, indexed daily. Every source is open access or public domain. The CLI authenticates with an API key: sign in once, save the key, search from anywhere.

For humans — search, export citations in 11 formats (BibTeX, APA, MLA, Chicago, IEEE, Harvard, RIS, Bluebook, OSCOLA, ISO 690, ANSI Z39), and download PDFs to disk with one command.
For AI agents — a stdio MCP server with nine tools, so Claude, Cursor, Windsurf, OpenCode, or any MCP client can search, queue batch searches, resolve identifiers (RFC, DOI, arXiv, PMID, PMCID, NIST/FIPS, W3C, US case citation), walk the reference graph, save PDFs into your workspace, and hand a document to Zotero or Obsidian.
100% self-contained — talks only to the public HTTPS API. No internal infrastructure; your key lives in ~/.conceptio/config.json.

Install

pip install conceptio-search

Requires Python 3.8+. (Checked, not just claimed: the suite parses every source file at the declared floor's grammar, so the promise cannot rot silently.)

The console script is conceptio; python -m conceptio_cli is the same entry point for a virtualenv that was never activated.

Authenticate (one time)

The CLI needs an API key before it can search:

conceptio auth ckey_live_...

Get the key by signing in at conceptio.app and creating one on your profile (Free, Dev, Pro, or Enterprise). The key is stored in ~/.conceptio/config.json and sent as X-Api-Key with every request. conceptio quota reports your tier at any time. Every command below assumes this step is done — without a key the CLI refuses to run and tells you exactly this.

Quick start

# Search — supports source:/lang:/category: directives

conceptio search "attention is all you need" --limit 5 conceptio search "source:nist zero trust" --license commercial-ok conceptio search "source:eurlex AI act" --json conceptio search "meditations marcus aurelius" --markdown # for Obsidian/Notion conceptio search "diffusion models" --offset 20 # paginate past the first page

Multi-query programmatic search — two modes:

conceptio search --batch queries.json --json # queue 1–50 searches, print the job handle conceptio search --batch queries.json --wait --json # queue, then block until done and print results conceptio search --batch queries.json --wait --timeout 60 # …but never block longer than a minute conceptio search --batch queries.json --sync --json # run 1–10 immediately, no queue (one request) conceptio search-job --json # poll once; repeat on your own cadence conceptio search-job --wait --json # poll until done, then print results

Resolve a known identifier straight to its document(s)

conceptio resolve "RFC 2119" conceptio resolve "doi:10.1109/access.2020.2986772" conceptio resolve "2604.08499" # arXiv conceptio resolve "PMID 41961061" # PubMed conceptio resolve "PMC10601397" # PubMed Central conceptio resolve "NIST FIPS 199" conceptio resolve "347 U.S. 483" # US case citation (Supreme Court) conceptio resolve "20-5364" # federal docket conceptio resolve "RFC 2119" --json

Download the original PDF

conceptio download 297465 -o paper.pdf # by document ID conceptio download "https://arxiv.org/pdf/2604.21816v1.pdf" # by URL

Citations — 11 formats: bibtex, apa, mla, chicago, ieee, harvard,

ris, bluebook, oscola, iso690, ansiz39

conceptio cite 7288 --format bibtex conceptio cite 7288 --format apa conceptio cite 7288 --format iso690

Document metadata

conceptio info 2844 conceptio proof 2844 # machine-readable evidence bundle conceptio proof 2844 -q "quantum" # passage-level proof for a phrase

License key (Pro) or API key + quota

conceptio auth CONCEPTIO-XXXX-XXXX-XXXX # Pro license (one-time, account-bound) conceptio auth ckey_live_... # API key (agent/machine credential) conceptio quota conceptio quota --json # {tier, auth, credits…} for a status surface

The flag may come before the subcommand, the way machine callers write it

conceptio --json search "zero trust"

Version

conceptio --version

AI agent server

conceptio mcp

Example

$ conceptio search "source:nist zero trust" --limit 3

Conceptio - 3 results for "source:nist zero trust"

Year Title Author Source PDF

1 n.d. NIST SP 1800-35: Implementing a Zero Trust Scott Rose (NIST); … NIST [x] 2 n.d. NIST SP 800-207: Zero Trust Architecture Scott Rose (NIST); … NIST [x] 3 n.d. NIST SP 800-207A: A Zero Trust Architecture Ramaswamy Chandramo… NIST [x]

Tip: conceptio download 2844 saves the PDF, conceptio cite 2844 exports a citation.

Query words are highlighted in gold in the title column. The PDF column shows [x] when a direct PDF link is available; [ ] rows still surface the source URL via conceptio info .

Search directives

The CLI understands the same directives as the Conceptio web app — they are stripped from the query and applied as real filters:

Directive	Example	Effect
`source:` / `src:`	`source:nist`	Restrict to one or more sources (`source:nist source:owasp`)
`lang:` / `language:`	`lang:it`	Restrict to a language (ISO code)
`category:` / `cat:`	`cat:"Law & Regulation"`	Restrict to a category tab
`--license commercial-ok`	`--license commercial-ok`	Keep only sources whose catalog metadata explicitly permits commercial use; this is a conservative filter, not a redistribution grant.

Directives can be combined freely: conceptio search "cat:\"Computer Science & Tech\" source:nist lattice cryptography".

Resolve

The kind describes the identifier, not the archive: a well-formed DOI this archive does not hold answers with kind: "doi", total: 0 and an empty results list, which is a correct empty answer rather than a failure. Every example above resolves to at least one document today — the suite that drives the shipped CLI against the live API asserts exactly that, so an example can only rot if that check is skipped.

Model Context Protocol (MCP)

The conceptio mcp command starts a stdio JSON-RPC MCP server. It is dependency-free (no MCP SDK required) and works with any MCP client.

The server is dual-era: it answers the current 2026-07-28 revision — per-request _meta, server/discover, resultType, cache hints — and still serves the older initialize handshake (2024-11-05 … 2025-11-25) for clients that predate it. A client that speaks both eras probes with server/discover first and finds us; a handshake client is served exactly as before.

A key is required for tool calls. The server starts without one, so a host can discover it and read its tool list — and then answers every tools/call with an in-band error carrying the setup steps. Hand it the key either way: run conceptio auth once, or give it to the host through the host's own environment, which is how the official registry listing declares it:

{ "mcpServers": { "conceptio": { "command": "conceptio", "args": ["mcp"],

"env": { "CONCEPTIO_API_KEY": "ckey_live_…" } } } }

Tools

Tool	Description
`conceptio_search`	Search the archive (`query`, optional `limit` 1–20, optional `category`). Returns structured results with titles, authors, years, source, snippet, and `direct_pdf_url` when available.
`conceptio_search_batch`	Run multiple searches in one call — queue 1–50 as a background job and return an opaque handle (`sync` omitted/false), or set `sync: true` to run 1–10 immediately and return all results in one response.
`conceptio_resolve`	Resolve a known identifier — RFC (`RFC 2119`), DOI (`doi:10.1109/access.2020.2986772`), arXiv (`2604.08499`), PubMed ID (`PMID 41961061`), PubMed Central ID (`PMC10601397`), NIST/FIPS designation (`NIST FIPS 199`), W3C spec shortname (`w3c_digital-credentials`), or US legal citation / docket (`347 U.S. 483`, `20-5364`) — straight to its document(s). Unrecognised identifiers fall back to a text search.
`conceptio_download_pdf`	Download the original open-access PDF for a Conceptio document ID or a direct PDF URL to a local path.
`conceptio_get_citation`	Get a citation for a document ID in any of 11 formats (BibTeX, APA, MLA, Chicago, IEEE, Harvard, RIS, Bluebook, OSCOLA, ISO 690, ANSI Z39).
`conceptio_get_document`	Full metadata (title, author, source, category, license, year, language, URL, direct PDF URL, description) for a document ID.
`conceptio_graph_walk`	Walk the reference graph from a seed `source_id` — what it cites (`direction: 'out'`), what cites it (`'in'`), or `'both'` — one or two hops, optionally filtered to the `cites` / `updates` relation kinds. Returns nodes with their distance from the seed and canonical edges carrying their kinds. Metadata-only: it spends no credits.
`conceptio_connectors_send`	Save one document to Zotero, or open a metadata-only Obsidian handoff. Server-side ownership, connector trial and failure semantics apply.
`conceptio_connectors_send_all`	Bulk-save up to 500 document ids to Zotero. Requires Pro, institutional or licensed access — there is no free-trial path.

Claude Desktop

Add to claude_desktop_config.json:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

"mcpServers": { "conceptio": { "command": "conceptio", "args": ["mcp"] } } }

Cursor

Settings → Cursor Settings → MCP → Add new MCP server:

"mcpServers": { "conceptio": { "command": "conceptio", "args": ["mcp"] } } }

OpenCode / Windsurf / Antigravity

The same JSON shape works in any MCP-aware client — point it at conceptio mcp and the nine tools above are exposed automatically. An MCP host may supply the credential by environment (CONCEPTIO_API_KEY, or CONCEPTIO_BEARER_TOKEN for a signed-in session) instead of writing ~/.conceptio/config.json.

After adding, restart the client and you can ask, for example:

*"Find the NIST post-quantum encryption standard and download the PDF into my workspace."*

Manual smoke test

echo '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' | conceptio mcp

Windows PowerShell quirk: pwsh pipes text to native commands as UTF-16,

which the server (UTF-8 JSON-RPC) answers with a Parse error. Real MCP

hosts speak UTF-8 and are unaffected — this only bites hand-rolled

echo ... | conceptio mcp probes from pwsh. Save the request as UTF-8

first instead:

`powershell

'{"jsonrpc":"2.0","id":1,"method":"tools/li

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

Conceptio Search

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

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

conceptio-search

Install

Authenticate (one time)

Quick start

Multi-query programmatic search — two modes:

Resolve a known identifier straight to its document(s)

Download the original PDF

Citations — 11 formats: bibtex, apa, mla, chicago, ieee, harvard,

ris, bluebook, oscola, iso690, ansiz39

Document metadata

License key (Pro) or API key + quota

The flag may come before the subcommand, the way machine callers write it

Version

AI agent server

Example

Year Title Author Source PDF

Search directives

Resolve

Model Context Protocol (MCP)

Tools

Claude Desktop

Cursor

OpenCode / Windsurf / Antigravity

Manual smoke test