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Mrd MCP Server

by newspacemarket-com Your server? Claim it
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Mrd is answering right now. Last checked 5 min ago. 215 installs a week from npm. It exposes 10 tools. Last commit 14 Sep 2026.

Spacecraft component specs from vendor datasheets: search, digests, facts, gaps, budgets, bus design

Installs per day peak 178 · avg 10 · +672% w/w
a month agotoday
Uptime history 23 days of history · worst day 99%
23 days agonow
98.9%
Uptime 24h
90 of 91 checks
10
Tools
read from the server
179 ms
Response time
average over 24h
215
Installs / week
npm and PyPI

What changed 14

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 31 August 2026. No other catalogue keeps this.

21 Sep 2 tools changed the parameters they ask for get_component_specs, match_components
19 Sep a tool description was rewritten check_fit
17 Sep a tool appeared explain_properties
14 Sep a tool appeared check_fit
13 Sep 5 tools appeared ask_datasheet, design_stack, find_data_gaps and 2 more
13 Sep a tool changed version2 times that day
13 Sep a tool changed the parameters it asks for match_components
31 Aug a tool changed version
and 1 more, back to 31 August 2026

Mrd missed one check this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

run in your terminal
claude mcp add mrd --transport http https://newspacemarket.com/mrd-connect/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "mrd": {
      "url": "https://newspacemarket.com/mrd-connect/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.mrd]
url = "https://newspacemarket.com/mrd-connect/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "mrd": {
      "url": "https://newspacemarket.com/mrd-connect/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "mrd": {
      "url": "https://newspacemarket.com/mrd-connect/mcp"
    }
  }
}

This one needs environment variables set before it will start: MRD_API_KEY (Optional free API key; raises rate limits five-fold. Request one at https://newspacemarket.com/mrd-connect/). The author declared them in the registry entry; get the values from the project itself.

Available tools 10

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

datasheet
get_datasheet_digest
Facts machine-read from a product datasheet, by section (identity, performance, electrical, interfaces, mechanical, thermal, environmental, qualification, lifetime, options, compliance, commercial). Each fact carries unit, condition, the page and a verbatim quote it was verified against (confidence L0) plus a link into the PDF. Use it for what the typed layer does not hold: connectors, protocols, survival temperature, vibration, radiation, heritage, options, export control, lead time. Pass product_id from match_components or a product name.
search_datasheet_facts
One fact key across a whole category: which products state it in their datasheets and what value — e.g. connector, data_interface, protocol, survival_temperature, tid_tolerance, flight_heritage, trl, export_control, lead_time, price, design_life. One row per product with page and quote. Reports coverage (how many products of the category have a digested datasheet).
ask
ask_datasheet
Ask a product datasheet a question and get the closest excerpts with page numbers (pre-indexed text), or scan ALL datasheets of a category for an exact term (term + category) and get the exact list of products mentioning it with an excerpt each.
build
build_budget
Engineering budget for a component stack: pass product ids (from the other tools) and your bus voltage, get total mass, total steady-state power, per-item data interfaces, voltage-compatibility verdicts and an honest list of what could NOT be counted because the vendor does not publish it. Use it to assemble and sanity-check a subsystem, e.g. 3-4 reaction wheels for an ADCS.
component
get_component_specs
The full typed layer of a category — every item with every value (number, canonical unit, bound, measurement condition, datasheet source page, confidence L0/L1) plus the property dictionary grouped by interface port (perf/power/data/mech/thermal/env/supply) — for arbitrary comparison, budgeting or trade studies on your side.
data
find_data_gaps
What is missing for a product, a company or a category and where to get it: in_digest (already read from the datasheet — value, page), in_datasheet_text (the datasheet mentions it — page, excerpt), not_in_datasheet (ask the vendor), no_datasheet (ask the vendor for a datasheet). For vendors: what to publish; for buyers: what to ask.
design
design_stack
Assemble a whole spacecraft bus from a plain-language task: the service plans the subsystems, matches every item deterministically against the stated requirements, computes the mass/power budget and writes an evidence-bound rationale. Pass fixed = product ids you have already chosen (from match_components or get_datasheet_digest): they stay in their subsystems, are checked against the requirements (selected.fixed, fixed_verdict, fixed_fails) and the rest is assembled around them. LLM-backed and rate-limited (6/min, 30/h anonymous).
explain
explain_properties
What every property of a product category means: definition, how it is measured and what goes into the measurement condition, how to use it when selecting, what it is commonly confused with, typical range and related properties. Call this before interpreting specs of an unfamiliar category.
fit
check_fit
Check whether a set of products docks together, by the interface template of each product type: deployer and CubeSat structure form factor and satellite mass, separation system and spacecraft mass, solar panel size and EPS solar input (Voc/Vmp, power), battery and EPS, EPS output rails or the unregulated bus against each unit supply range, EPS charge current against the battery limit, satellite envelope against the deployer envelope for its form factor, on-board computer against unit data interfaces, board stack format, free volume, radio against antenna and ground station (frequency, band, connector, protocol and modulation), antenna against ground station polarization, GNSS receiver signals against the GNSS antenna band, magnetorquer coil current against the driver channel, PPU output power against the electric thruster, array drive against panel power, propulsion propellant against tank media, steady power budget. Verdicts fits / conflict / check / unknown, plus ask_vendor: exactly which values are missing to decide.
match
match_components
Reverse search over a typed spec layer: pass a category and engineering requirements, get every catalogued item grouped as A (meets all stated requirements), B (fails a named requirement, both figures quoted) or C (could fit, data missing). Verdicts cite the datasheet page. Omit parameters you do not care about. Categories: reaction-wheels, star-trackers, obc-computers, batteries, radios, solar-panels, propulsion, sun-sensors, magnetometers, magnetorquers, imus-gyros, gnss-receivers, eps, deployers, thermal, antennas, sdr-modems, cameras, structures, ground-stations, sadm, tanks-valves, separation-systems, pointing-mechanisms.

Endpoints

URLTransportStateLatencyChecked
https://newspacemarket.com/mrd-connect/mcp streamable-http answering 146 ms 5 min ago

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Mrd — questions

Answers built from our own checks of this server.

What can Mrd do?
It exposes 10 tools, read directly from the server on our last check. Among them: ask_datasheet, build_budget, check_fit, design_stack, explain_properties, find_data_gaps and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Mrd working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 179 ms. The bar chart above shows every period we have measured.
How do I connect Mrd?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Mrd need an API key?
No. Mrd completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 10 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Mrd?
It answers our handshake in 179 ms on average, which is faster than 73% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Mrd?
The npm package @newspacemarket/mrd-mcp was installed 215 times in the last week. Week over week that is +672%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Mrd open source?
Yes — it is published under the MIT licence, written in JavaScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.