Polygraph
Rank #4,423io.github.polygraphso/litmus
Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.
Polygraph is a Model Context Protocol (MCP) server published by polygraphso. It ranks #4,423 of 132,046 servers tracked on MCP Toplist, and its repository has 8 GitHub stars. Polygraph is listed across 3 registries — Official MCP, Glama and PulseMCP, with 12 tracked versions. It was first listed on Jun 19, 2026 and most recently updated on Jul 20, 2026.
Ranks ahead of 127,623 of 132,046 servers on MCP Toplist.
Use Polygraph
No credentials or required configuration declared — add it to your MCP client and go.
claude mcp add --transport http litmus https://polygraph.so/api/mcpclaude mcp add litmus -e "POLYGRAPH_API_URL=<your POLYGRAPH_API_URL>" -e "NEXT_PUBLIC_POLYGRAPH_NETWORK=<your NEXT_PUBLIC_POLYGRAPH_NETWORK>" -- npx -y @polygraphso/litmus polygraphso-litmus-mcpReplace each placeholder with your own value before saving.
[mcp_servers.litmus]
url = "https://polygraph.so/api/mcp"Add to ~/.codex/config.toml.
[mcp_servers.litmus]
command = "npx"
args = ["-y", "@polygraphso/litmus", "polygraphso-litmus-mcp"]
[mcp_servers.litmus.env]
POLYGRAPH_API_URL = "<your POLYGRAPH_API_URL>"
NEXT_PUBLIC_POLYGRAPH_NETWORK = "<your NEXT_PUBLIC_POLYGRAPH_NETWORK>"Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.
https://polygraph.so/api/mcpSettings → Connectors → “Add custom connector”, then paste this URL.
{
"mcpServers": {
"litmus": {
"command": "npx",
"args": [
"-y",
"@polygraphso/litmus",
"polygraphso-litmus-mcp"
],
"env": {
"POLYGRAPH_API_URL": "<your POLYGRAPH_API_URL>",
"NEXT_PUBLIC_POLYGRAPH_NETWORK": "<your NEXT_PUBLIC_POLYGRAPH_NETWORK>"
}
}
}
}Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.
{
"mcpServers": {
"litmus": {
"url": "https://polygraph.so/api/mcp"
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).
{
"mcpServers": {
"litmus": {
"command": "npx",
"args": [
"-y",
"@polygraphso/litmus",
"polygraphso-litmus-mcp"
],
"env": {
"POLYGRAPH_API_URL": "<your POLYGRAPH_API_URL>",
"NEXT_PUBLIC_POLYGRAPH_NETWORK": "<your NEXT_PUBLIC_POLYGRAPH_NETWORK>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.
{
"servers": {
"litmus": {
"type": "http",
"url": "https://polygraph.so/api/mcp"
}
}
}Save as .vscode/mcp.json in your workspace.
{
"servers": {
"litmus": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@polygraphso/litmus",
"polygraphso-litmus-mcp"
],
"env": {
"POLYGRAPH_API_URL": "<your POLYGRAPH_API_URL>",
"NEXT_PUBLIC_POLYGRAPH_NETWORK": "<your NEXT_PUBLIC_POLYGRAPH_NETWORK>"
}
}
}
}Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"litmus": {
"serverUrl": "https://polygraph.so/api/mcp"
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
{
"mcpServers": {
"litmus": {
"command": "npx",
"args": [
"-y",
"@polygraphso/litmus",
"polygraphso-litmus-mcp"
],
"env": {
"POLYGRAPH_API_URL": "<your POLYGRAPH_API_URL>",
"NEXT_PUBLIC_POLYGRAPH_NETWORK": "<your NEXT_PUBLIC_POLYGRAPH_NETWORK>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"litmus": {
"url": "https://polygraph.so/api/mcp"
}
}
}{
"mcpServers": {
"litmus": {
"command": "npx",
"args": [
"-y",
"@polygraphso/litmus",
"polygraphso-litmus-mcp"
],
"env": {
"POLYGRAPH_API_URL": "<your POLYGRAPH_API_URL>",
"NEXT_PUBLIC_POLYGRAPH_NETWORK": "<your NEXT_PUBLIC_POLYGRAPH_NETWORK>"
}
}
}
}Replace each placeholder with your own value before saving.
Show your rank
Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.
[](https://mcptoplist.com/server/io.github.polygraphso%2Flitmus)<a href="https://mcptoplist.com/server/io.github.polygraphso%2Flitmus"><img src="https://mcptoplist.com/badge/io.github.polygraphso%2Flitmus.svg" alt="MCP Toplist: Top 5% of 132,046" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Listed on 3 registries
polygraphso
Available versions (12)
| Version | Published |
|---|---|
| 0.36.0 | Jul 20, 2026 |
| 0.35.0 | Jul 18, 2026 |
| 0.34.0 | Jul 16, 2026 |
| 0.33.1 | Jul 10, 2026 |
| 0.33.0 | Jul 9, 2026 |
| 0.32.0 | Jul 9, 2026 |
| 0.31.0 | Jul 8, 2026 |
| 0.30.0 | Jul 6, 2026 |
| 0.29.0 | Jul 6, 2026 |
| 0.28.0 | Jul 6, 2026 |
| 0.26.0 | Jul 3, 2026 |
| 0.12.1 | Jun 19, 2026 |
Frequently asked questions
- Who maintains Polygraph?
- Polygraph is maintained by polygraphso, which publishes 1 MCP server (12 total versions) tracked on MCP Toplist.
- Is Polygraph listed on the Official MCP Registry?
- Yes — Polygraph is listed on the Official MCP Registry, alongside Glama and PulseMCP.
- How many versions does Polygraph have?
- MCP Toplist tracks 12 versions of Polygraph, most recently published on Jul 20, 2026.
- Where can I find the source code for Polygraph?
- The source code for Polygraph is hosted at github.com/polygraphso/litmus.
Do you run this server?
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