Countersignatory — Claude Code MCP server: pricing and setup
This MCP server prices verified human checks, agreements, signatures and regulated acts. Use it when an agent needs human judgment before committing to a task.
claude mcp add --transport http mcp https://countersignatory.com/mcpWhat Countersignatory does
Countersignatory gives an agent a live estimate for work that requires a person’s judgment or accountability. The countersignatory_quote tool accepts task details such as urgency, market tier, consensus size, jurisdiction and a price cap. Its response includes an indicative amount, a price range, timing multipliers, lower-bid alternatives and the implied per-minute rate.
Use countersignatory_register_interest to record that a quote would work for the use case. The countersignatory_spot_index tool exposes current rates, market multipliers, the wage floor and the calculation behind seeded figures. The endpoint uses stateless Streamable HTTP at https://countersignatory.com/mcp. Authentication is optional, while the market opens after the current demand-measurement window.
What it helps with
- price a human review before execution
- request a multi-person consensus quote
- check the rate for a professional signature
- record demand for a quoted task
Example prompts for the agent
- Use
countersignatory_quoteto price a verified human review of this decision. - Estimate a three-person consensus needed within the hour with a maximum bid.
- Send the returned
quote_idtocountersignatory_register_interestif we would buy at that price.
How to install Countersignatory
Platform CLI: remote server
claude mcp add --transport http mcp https://countersignatory.com/mcpPlatform CLI: remote server
codex mcp add countersignatory --url https://countersignatory.com/mcpConfig file
{
"mcpServers": {
"countersignatory": {
"url": "https://countersignatory.com/mcp"
}
}
}Config file
{
"servers": {
"countersignatory": {
"type": "http",
"url": "https://countersignatory.com/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http countersignatory https://countersignatory.com/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about Countersignatory
How do I install Countersignatory in Claude Code?
Run claude mcp add --transport http mcp https://countersignatory.com/mcp, then run claude mcp add --transport http countersignatory https://countersignatory.com/mcp.
What does Countersignatory do?
It gives agents a current price estimate for verified human review, agreement, sign-off or regulated acts, and exposes a public spot-rate index.
Does the MCP server require an API key?
No. Requests work without authentication; an optional free bearer key is available from POST https://countersignatory.com/v1/keys so calls can be counted as one caller.
