Witness
Rank #60,323io.github.tfitzgerwitness/witness
Testnet-only proofs for breaking JSON Schema/MCP changes; UNKNOWN never means compatible.
Witness is a Model Context Protocol (MCP) server. It ranks #60,323 of 137,138 servers tracked on MCP Toplist. Witness is listed on Official MCP, with 2 tracked versions. It was first listed on Aug 25, 2026 and most recently updated on Aug 28, 2026.
Ranks ahead of 76,815 of 137,138 servers on MCP Toplist.
Use Witness
No credentials or required configuration declared — add it to your MCP client and go.
claude mcp add --transport http witness https://witness-contractwitness-production.witness-test.workers.dev/mcp[mcp_servers.witness]
url = "https://witness-contractwitness-production.witness-test.workers.dev/mcp"Add to ~/.codex/config.toml.
https://witness-contractwitness-production.witness-test.workers.dev/mcpSettings → Connectors → “Add custom connector”, then paste this URL.
{
"mcpServers": {
"witness": {
"url": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).
{
"servers": {
"witness": {
"type": "http",
"url": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
}
}
}Save as .vscode/mcp.json in your workspace.
{
"mcpServers": {
"witness": {
"serverUrl": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
{
"mcpServers": {
"witness": {
"url": "https://witness-contractwitness-production.witness-test.workers.dev/mcp"
}
}
}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.tfitzgerwitness%2Fwitness)<a href="https://mcptoplist.com/server/io.github.tfitzgerwitness%2Fwitness"><img src="https://mcptoplist.com/badge/io.github.tfitzgerwitness%2Fwitness.svg" alt="MCP Toplist: Top 50% of 137,138" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Listed on 1 registry
Available versions (2)
| Version | Published |
|---|---|
| 0.3.0 | Aug 28, 2026 |
| 0.2.0 | Aug 25, 2026 |
Frequently asked questions
- Is Witness listed on the Official MCP Registry?
- Yes — Witness is listed on the Official MCP Registry.
- How many versions does Witness have?
- MCP Toplist tracks 2 versions of Witness, most recently published on Aug 28, 2026.
Do you run this server?
Community projects list the MCP servers behind real agents and apps. Publish yours and this page will link to it.