Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Validate & geocode a US address: demographics, districts & schools. Agents can buy credits via MPP.
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X-Api-KeyValues marked secret are keys to your account. Never share them or paste them into a chat.
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This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Run this in your terminal
claude mcp add --transport http api https://mcp.zip-codes.com/mcp --header 'X-Api-Key: your-value'Fill in the empty values before running it.
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"api": {
"url": "https://mcp.zip-codes.com/mcp",
"headers": {
"X-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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"api": {
"type": "http",
"url": "https://mcp.zip-codes.com/mcp",
"headers": {
"X-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 address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Your choice stays on this device in a cookie; no account needed.
X-Api-Key secret HTTP headerThese settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
suggest_placesSearch for a place by partial name, misspelled name, or partial code — the resolver that turns what a person typed into something the other tools can look up. Fuzzy matching is built in: "beverley hills" finds Beverly Hills, "san fransisco" finds San Francisco, and a partial code
zip_lookupThe full record for a postal code — the main location-intelligence tool. Takes a US ZIP Code, a US ZIP+4, a Canadian FSA, a Canadian postal code, or a latitude,longitude pair, and returns the city, state or province, county, whether it spans more than one county, area codes, elev
zip_factsStatistics about US ZIP Codes and Canadian postal codes: how many exist, how they break down by type, delivery point and carrier route totals, per-state tables, and ranked lists such as the ZIP Codes with the most carrier routes. Every figure is generated from a stored query agai
quick_zipThe fast, small answer for a postal code. Takes a US ZIP Code, a US ZIP+4, a Canadian FSA, a Canadian postal code, or a latitude,longitude pair, and returns the code's city, state or province, county, and whether it spans more than one county. Given a ZIP+4 it also returns the st
city_name_rulesHow USPS names a ZIP Code, and which of those names may be used on mail. Each ZIP Code has exactly one preferred city name plus alternates, and some alternates are NOT valid for addressing — for 08088 NJ, SHAMONG is valid while SHAMONG TOWNSHIP is not. Returns the rules, the coun
buy_creditsBuy a credit pack with a wallet that pays MPP (Machine Payments Protocol) challenges, such as Stripe Link. The credits go on the account or prepaid card of the API key you send. Without a key, the purchase makes a prepaid card: a new API key holding the credits, in the result's a
radius_searchFind every US ZIP Code and Canadian postal area within a radius of a centre point, with the distance to each. The centre takes a US ZIP Code, a US ZIP+4, a Canadian FSA, a Canadian postal code, or a latitude,longitude pair; a ZIP+4 searches from its parent ZIP, and coordinates ar
about_dataWhere this server's data comes from: for each dataset the authority behind it, the edition served where the source publishes editions (TIGER/Line, ACS, ZCTA), how often a new release is taken, and a ready-made citation string. Costs nothing and needs no key.
distanceDistance between two places, in miles and kilometres, plus the compass bearing from the first to the second. Each end takes a US ZIP Code, a US ZIP+4, a Canadian FSA, a Canadian postal code, or a latitude,longitude pair, and the two ends can be different kinds — a US ZIP to a Can
validate_addressValidate and standardise a US street address and return its ZIP+4. US ONLY — unlike the postal-code tools, this does not cover Canada. Send the address on one line in mailing order: number and street, then any unit (APT 4, STE 900, #9), then city, state and ZIP. It tolerates ordi
county_referenceUS counties and county equivalents — all 3,235 of them — with their Census and USPS names, which disagree for over a hundred, plus ANSI code, legal type, land and water area, and USPS delivery footprint. Filter by state to get every county in that state: without a filter only the
metro_area_referenceUS metropolitan and micropolitan statistical areas (CBSAs) — all 935. Of those only 393 are metropolitan; the rest are micropolitan and are NOT metro areas, so do not treat a CBSA count as a metro count. Each carries its divisions, parent combined area, land area and delivery foo
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
The registry name was verified against the domain zip-codes.com (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
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Read 12 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 of 3 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.
You need to fill in: X-Api-Key
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.
The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 4 days ago.
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.
In the same category: Spec Driven Development, Remote Desktop Commander, Georgia MCP
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
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
An MCP server for Georgian public data, read from the organizations that publish it.
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.
Location intelligence for US addresses and ZIP Codes, through the Model Context Protocol. Zip-Codes.com can validate a US street address and return its ZIP+4, census tract demographics, income, housing and school district in one call. It answers from current USPS data, updated monthly, and Census boundaries, so an agent looks addresses and ZIP Codes up instead of guessing them. Request the enrichments you need. The survey estimates describe the census tract and carry margins of error.
ZIP boundaries follow USPS carrier routes and are refreshed quarterly. Coverage includes PO Box and single-organization ZIP Codes that Census ZIP-area files leave out. Boundary enrichments show which counties and districts a ZIP overlaps, with shares measured by area. The USPS county assignment is available alongside the mapped counties.
For history, request Census TIGER/Line boundaries from 2010–2026. American Community Survey profiles use consistent field names across 2011–2024 releases for ZIP Code areas and 2022–2024 for tracts. A ZIP's survey estimates come from the Census ZCTA with the same code.
MPP-capable: an optional buy_credits tool lets an agent with an MPP wallet (such as Stripe Link) buy a prepaid API key or add credits to one; the wallet's owner approves each payment.
Server URL: https://mcp.zip-codes.com/mcp (Streamable HTTP).
claude mcp add --transport http zip-codes https://mcp.zip-codes.com/mcp
claude mcp add --transport http zip-codes https://mcp.zip-codes.com/mcp --header "X-Api-Key: YOUR_KEY"
~/.cursor/mcp.json) and other mcpServers clients{
"mcpServers": { "zip-codes": { "url": "https://mcp.zip-codes.com/mcp", "headers": { "X-Api-Key": "YOUR_KEY" } } } }
.vscode/mcp.json){
"servers": { "zip-codes": { "type": "http", "url": "https://mcp.zip-codes.com/mcp", "headers": { "X-Api-Key": "YOUR_KEY" } } } }
Clients that only take a bearer token can send Authorization: Bearer YOUR_KEY instead.
Add https://mcp.zip-codes.com/mcp as a custom connector. It runs in demo mode unless the connector form has a Request headers section (a beta for a limited set of organizations): there, add x-api-key with your key.
| Tool | Title | What it does |
|---|---|---|
about_data | About this data | Where this server's data comes from: for each dataset the authority behind it, the edition served where the source publishes editions (TIGER/Line, ACS, ZCTA), how often a new release is taken, and a ready-made citation string. |
buy_credits | Buy credits | Buy a credit pack with a wallet that pays MPP (Machine Payments Protocol) challenges, such as Stripe Link. |
city_name_rules | City name rules | How USPS names a ZIP Code, and which of those names may be used on mail. |
county_reference | County reference | US counties and county equivalents — all 3,235 of them — with their Census and USPS names, which disagree for over a hundred, plus ANSI code, legal type, land and water area, and USPS delivery footprint. |
distance | Distance between two places | Distance between two places, in miles and kilometres, plus the compass bearing from the first to the second. |
metro_area_reference | Metro area reference | US metropolitan and micropolitan statistical areas (CBSAs) — all 935. |
quick_zip | Quick ZIP / ZIP+4 / reverse geocode | The fast, small answer for a postal code. |
radius_search | Radius search | Find every US ZIP Code and Canadian postal area within a radius of a centre point, with the distance to each. |
suggest_places | Place search (type-ahead) | Search for a place by partial name, misspelled name, or partial code — the resolver that turns what a person typed into something the other tools can look up. |
validate_address | Validate a US address | Validate and standardise a US street address and return its ZIP+4. |
zip_facts | ZIP Code facts | Statistics about US ZIP Codes and Canadian postal codes: how many exist, how they break down by type, delivery point and carrier route totals, per-state tables, and ranked lists such as the ZIP Codes with the most carrier routes. |
zip_lookup | ZIP Code lookup | The full record for a postal code — the main location-intelligence tool. |
No key needed to start. A free key gives 2,500 credits a day; plans and credit packs: https://www.zip-codes.com/api/pricing
Email jharris@zip-codes.com. Issues are turned off on this repository; email reaches the people who run the server.
Privacy policy: https://www.zip-codes.com/privacy-policy.asp
Proprietary. All rights reserved; see LICENSE. Use of the server, API and data is governed by the Terms of Service: https://www.zip-codes.com/api/tos