SaaSCity

io.saascityPublished by saascity.ioOfficial publisherv2.1.0Updated Nov 7, 2026

Audit your site, pick from 1,600+ launch directories by DR and link type, and list on SaaSCity.

VerifiedStreamable HTTPWeb executableWeb Search & ScrapingData & AnalyticsBusiness & Commerce

Overview

AI-generated overview

Audits a product homepage, picks launch directories by DR, link type and price, and drafts a SaaSCity listing.

What you can do
  • Audit a homepage for launch readiness and check whether a directory listing links back to your site
  • Search, filter and vet launch directories by category, Ahrefs DR, link type, price and badge requirement
  • Draft a SaaSCity listing, check badge status and track submission status and launch weeks
  • Search SaaSCity listings, read one in full, see leaderboards and find alternatives in a category
  • Compute SaaS metrics: ARR, ARR bridge, churn, NRR/GRR, Rule of 40, NPS, A/B significance, markup and uptime
When to use it
Useful when preparing a SaaS or AI product launch: fixing homepage metadata before submitting to directories, choosing which directories are worth paying for, verifying backlinks after submission, or running quick SaaS metric calculations.
Requirements
Remote endpoint over Streamable HTTP with no account or API key; a stdio option runs via npx and forwards to the hosted server. Network access is required. Rate limits apply per IP, e.g. submit_project 5 per day and check_launch_readiness 20 per hour.
Before you install
submit_project creates a draft and returns a claim link; nothing is published or charged until a human opens it, picks a plan and pays, and every new listing is paid. The claim link is the only way a draft becomes a listing. Directory link type and price may be unverified and returned as unknown. The server reads the URLs you give it, and the directory data is shared with SaaSCity's other directory sites.

Installation

In SourceWeft

  1. Open SaaSCity in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.saascity%2Fsaascity/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "saascity": {
      "type": "http",
      "url": "https://saascity.io/api/mcp"
    }
  }
}

README

SaaSCity MCP server

An MCP server for launching a product. Your AI agent can audit your homepage before launch, pick launch directories out of 1,600+ with Ahrefs DR, link type and price, and list the product on SaaSCity.

  • Remote, keyless: https://saascity.io/api/mcp (Streamable HTTP). No account, no API key.
  • Stdio: npx -y saascity-mcp for clients that only run local servers. It forwards to the hosted server.
  • Protocol: MCP 2026-07-28 (stateless) and the initialize-based versions 2025-11-25, 2025-06-18, 2025-03-26 and 2024-11-05, all on one endpoint.

Built by SaaSCity, the launch directory for SaaS and AI tools. Full docs: saascity.io/mcp

Install

Claude Code

bash
claude mcp add --transport http saascity https://saascity.io/api/mcp

Claude Desktop, Cursor, Windsurf, VS Code and other clients with mcpServers JSON

json
{  "mcpServers": {    "saascity": {      "type": "http",      "url": "https://saascity.io/api/mcp"    }  }}

Stdio-only clients

json
{  "mcpServers": {    "saascity": {      "command": "npx",      "args": ["-y", "saascity-mcp"]    }  }}

It also runs straight from GitHub: npx -y github:nyyhao/saascity-mcp.

Hermes Agent

The plugin/ folder is a portable Agent Plugins package with this server and a launch-planning skill. See plugin/README.md.

Tools

ToolWhat it does
check_launch_readinessAudits a homepage the way directory scrapers and link-preview bots see it: HTTPS, noindex, title, meta description, og:image (fetched to confirm it loads), X card, favicon, canonical, viewport, h1, JSON-LD, robots.txt, sitemap, parked or 404 pages, response time, and pages that are empty without JavaScript. Returns a 0-100 score, a verdict and a fix for each problem.
recommend_launch_directoriesHand-picked directories for SaaS, AI or developer tools, grouped by when to submit. Each pick has a human-written verdict, including the ones not worth paying for.
find_launch_directoriesFilters the full dataset (1,600+ startup, SaaS and AI directories) by category, minimum DR, dofollow/nofollow, price and badge-swap requirement. Unverified fields come back as unknown instead of a guess.
get_launch_directoryLooks up one directory by domain or URL before you pay for a listing.
submit_projectLists a product on SaaSCity as an inert draft and returns a claim link. Nothing is published or charged until a human opens it, picks a plan and pays, and every listing is reviewed by a person.
check_badgeChecks whether the SaaSCity badge is live on a site (a verified badge makes the listing link dofollow).
get_submission_statusWhere a submission stands, by claim token or listing slug.
get_launch_weeksThe next 12 weekly launches. Every new listing is paid and can take any of them.
get_offersListing plans and current prices.
search_listingsSearches products listed on SaaSCity by keyword and category.
get_listingOne listing in full.
get_leaderboardMost upvoted launches this week, in the last 30 days, or all time.
find_alternativesOther listings in the same category as a given one.
calculate_arr, calculate_arr_bridge, calculate_churn, calculate_nrr, rule_of_40, calculate_nps, ab_test_significance, markup_margin, uptime_downtimeSaaS metric calculators. They compute from the numbers you pass and read no data.
check_backlinkChecks whether a directory listing page links to your site and whether the link is followed: rel nofollow/ugc/sponsored, hidden links, links that only go through the directory's redirect, and page-level noindex, nofollow and canonical. Reads static HTML.

Every tool declares an outputSchema and returns structuredContent next to its text, plus readOnlyHint and the other behavior hints. Only submit_project writes anything, and it writes only a draft.

Prompts

  • plan_launch (website_url, product_type): audit, fix the blockers, pick directories, produce a dated launch checklist.
  • submit_to_saascity (website_url): draft a listing from the site, confirm it with you, then submit it.

Try it

Check if https://example.com is ready to launch, then give me a two-week launch plan for an AI tool using free dofollow directories.

Is uneed.best worth it? What's its DR and is the link dofollow?

List my product on SaaSCity. The site is https://example.com.

Data and limits

  • DR is Ahrefs Domain Rating. drCheckedAt is the date of its last recheck, or null when the value comes from the last sweep of the list. Link type and price come from checks against the live sites, dated by dataUpdatedAt. Rows nobody has verified say unknown.
  • The data is the same as on Best SaaS Directories and Best AI Directories.
  • Rate limits are per IP: submit_project 5 per day, check_launch_readiness 20 per hour, check_badge 30 per hour, check_backlink 60 per hour, everything else 30-60 per minute.
  • The server keeps no session and needs no cookies. The claim link from submit_project is the only way a draft becomes a listing.

Self-check

bash
curl -s https://saascity.io/api/mcp \  -H 'content-type: application/json' \  -H 'mcp-protocol-version: 2025-11-25' \  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

License

MIT for this bridge. The directory data is served by saascity.io and is not part of this repository.

Source: README.md at commit cba6b8a

Tools

23

check_launch_readiness

Check launch readiness

Audit a product homepage before launching it: HTTPS, noindex, title and meta description, og:image (fetched to confirm it loads), X card, favicon, canonical, mobile viewport, h1, JSON-LD, robots.txt, sitemap, parked or 404 pages, response time, and whether the page is empty without JavaScript. Returns a 0-100 score, a verdict and a fix for every problem. Reads the static HTML the way directory scrapers and link-preview bots do.

Parametersurlrequired

recommend_launch_directories

Recommend launch directories

Hand-picked launch directories for a product type, grouped by when to submit (launch day first, evergreen after). Every pick carries a human-written verdict, including the ones that are not worth paying for, plus Ahrefs DR, link type and price. Start here; use find_launch_directories to go wider across all 1,667 sites.

Parametersfree_onlyproduct_type

find_launch_directories

Find launch directories

Filter 1,667 startup, SaaS and AI directories by category, minimum Ahrefs DR, link type (dofollow/nofollow), price and badge-swap requirement. Returns submit URLs. Link type and price are "unknown" where nobody has verified them yet - treat those as unverified, not as free or dofollow.

Parameterssortlimitquerymin_droffsetpricingcategorylink_typeexclude_badge_exchange

get_launch_directory

Look up a launch directory

Look up one directory by domain or URL: Ahrefs DR, dofollow or nofollow, price, whether it wants a badge swap, the submit URL, and a human verdict where one exists. Use it to vet a directory before paying for a listing.

Parametersdomainrequired

submit_project

Submit a project to SaaSCity

List a product on the SaaSCity launch directory. Creates an inert draft and returns a claim URL; the human opens it to sign in, gets the submit form prefilled with the draft, picks a plan and a launch Monday and submits the form. Nothing is submitted, published or charged until they submit that form, and every listing is reviewed by a person. Every new listing is paid (see get_offers), and only the human pays. Free subdomain hosts (github.io, netlify.app...) and domains that already have a listing are refused.

Parameterstagstitlerequiredtaglinerequiredcategoryrequiredgithub_urldescriptionrequiredtwitter_urlwebsite_urlrequired

check_badge

Check the SaaSCity badge

Check whether the SaaSCity badge is live on a site. Reads the given URL and, for a deep page, the site homepage too, rendering JavaScript if the static HTML misses it. A verified badge keeps a free listing booked before November 6, 2026 on a dofollow link. A paid listing needs no badge.

Parametersurlrequired

get_submission_status

Get submission status

Where a SaaSCity submission stands. By claim token: unclaimed, expired, claimed but the form not submitted yet, submitted and waiting for payment, submitted and in review, rejected, archived, or live. By slug: a live listing (launch week, badge, link type, points).

Parametersslugclaim_token

get_launch_weeks

Get launch weeks

SaaSCity launch weeks: the next 12 Mondays. A round opens each Monday at 00:00 UTC, and a paid listing can take any of them.

Takes no parameters.

get_offers

Get listing offers

SaaSCity listing offers with real prices - Basic listing and Premium listing - and exactly what each buys (dofollow link, city-map building, launch review). Every new listing is paid. Only a human can pay, on the claim page.

Takes no parameters.

search_listings

Search SaaSCity listings

Search products listed on SaaSCity by keyword and/or category. Returns title, tagline, category, upvote points, the listing page and the product site. Useful for market research ("what else exists in this space?") before a launch.

Parameterssortlimitqueryoffsetcategory

get_listing

Get a SaaSCity listing

One live SaaSCity listing by slug: title, tagline, full description, category, upvote points, link type (dofollow/nofollow), listing page and product site.

Parametersslugrequired

get_leaderboard

Get the launch leaderboard

SaaSCity's most upvoted launches for this week's launch, the last 30 days, or all time, optionally within one category.

Parameterslimitperiodcategory

find_alternatives

Find alternatives to a listing

Other SaaSCity listings in the same category as a given listing, most upvoted first. Useful for competitor research and positioning.

Parametersslugrequiredlimit

calculate_arr

Calculate ARR from MRR

Turn monthly recurring revenue into annual recurring revenue (ARR = MRR x 12), with ARPU when the customer count is given and the months to $100k, $1M and $10M ARR at a monthly growth rate. Count annual plans at their yearly price divided by 12 and leave one-time fees out of MRR. Full calculator: https://saascity.io/free-tools/arr-calculator

Parametersmrrrequiredcustomersmonthly_growth_pct

calculate_arr_bridge

ARR bridge: new, expansion, contraction, churn

Explain how ARR moved over a period: ending ARR = starting ARR + new + expansion - contraction - churned. Returns net new ARR, growth, the SaaS quick ratio ((new + expansion) / (contraction + churned)), and net and gross revenue retention of the starting base. Full calculator: https://saascity.io/free-tools/arr-calculator

Parametersnew_arrstart_arrrequiredchurned_arrexpansion_arrcontraction_arr

calculate_churn

Customer churn rate

Customer churn and retention for a period, its monthly and annual equivalents (compounded, so 5% a month is about 46% a year, not 60%), and the average customer lifetime. Full calculator: https://saascity.io/free-tools/churn-rate-calculator

Parametersperiodcustomers_lostrequiredcustomers_at_startrequired

calculate_nrr

Net and gross revenue retention

Net revenue retention (NRR) and gross revenue retention (GRR) of a group of customers from their starting MRR, expansion, contraction and churned MRR, with annualised figures. Full calculator: https://saascity.io/free-tools/net-revenue-retention-calculator

Parametersperiodstart_mrrrequiredchurned_mrrexpansion_mrrcontraction_mrr

rule_of_40

Rule of 40 and SaaS efficiency

Rule of 40 score (revenue growth % + profit margin %), plus the magic number, burn multiple and SaaS quick ratio when their inputs are given. Full calculator: https://saascity.io/free-tools/rule-of-40-calculator

Parametersnew_mrrnet_burngrowth_pctrequiredmargin_pctrequiredchurned_mrrnet_new_arrexpansion_mrrcontraction_mrrrevenue_last_quarterrevenue_this_quartersales_marketing_last_quarter

calculate_nps

Net Promoter Score

Net Promoter Score from the counts of promoters (9-10), passives (7-8) and detractors (0-6), with the margin of error at 95% confidence. Full calculator: https://saascity.io/free-tools/nps-calculator

Parameterspassivesrequiredpromotersrequireddetractorsrequired

ab_test_significance

A/B test significance

Two-proportion test of an A/B result: conversion rates, relative uplift, p-value, confidence interval, the chance that B beats A, and a sample ratio mismatch check. Full calculator: https://saascity.io/free-tools/ab-test-calculator

Parametersvisitors_arequiredvisitors_brequiredconversions_arequiredconversions_brequiredconfidence_pct

markup_margin

Markup and margin

Selling price, profit and margin from a cost and a markup percent, or markup and margin from a cost and a selling price. Full calculator: https://saascity.io/free-tools/markup-calculator

Parameterscostrequiredpricemarkup_pct

uptime_downtime

SLA uptime to allowed downtime

Allowed downtime per day, week, month, quarter and year, in seconds, for an availability target such as 99.9%. Full calculator: https://saascity.io/free-tools/uptime-calculator

Parametersavailability_pctrequired

Version history

2
  1. v2.1.0LatestNov 7, 2026
  2. v2.0.0Sep 23, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

Other Saascity integrations

AI Agents Listing

Published by GitHub account nyyhao

Lets an assistant search, browse, compare and find alternatives in a directory of AI agents, MCP servers and skills, and optionally submit listings or reviews.

Streamable HTTPWeb executable
Productivity & Workflow10 toolsOct 29, 2026