MCP server

Source Claim Proof

dev.workers.mattskowronis.source-claim-proof/verify-source-claim

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Verify whether a supplied public source currently supports one atomic factual claim.

Working at last checkAbout 176 tokens per request once connected1 tools

Website

https://source-claim-proof.mattskowronis.workers.dev/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 1
Token cost: About 176 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http verify-source-claim https://source-claim-proof.mattskowronis.workers.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.verify-source-claim]
url = "https://source-claim-proof.mattskowronis.workers.dev/mcp"

Gemini CLI

{"mcpServers":{"verify-source-claim":{"httpUrl":"https://source-claim-proof.mattskowronis.workers.dev/mcp"}}}

Cursor

{"mcpServers":{"verify-source-claim":{"url":"https://source-claim-proof.mattskowronis.workers.dev/mcp"}}}

VS Code

{"servers":{"verify-source-claim":{"type":"http","url":"https://source-claim-proof.mattskowronis.workers.dev/mcp"}}}

Antigravity

agy mcp add verify-source-claim https://source-claim-proof.mattskowronis.workers.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"verify-source-claim","server_url":"https://source-claim-proof.mattskowronis.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"verify-source-claim","server_url":"https://source-claim-proof.mattskowronis.workers.dev/mcp"}

Tools

verify_source_claim ~176 tokens
Verify one atomic factual claim against one public source URL. Return supported, contradicted, or insufficient-evidence with source snippets, or explicit blocked/unreachable/unsupported states. Not a general fact checker.

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