API Tools

zsign.io

This server provides a simple API for legally binding electronic signatures.

2 endpoints7 known toolsFirst detected July 25, 2026Last detected August 2, 2026

ENDPOINT 1

https://zsign.io/mcp

Auth required

Known tools 0

No tool metadata was available in the registry cache.

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.zsign-io]
url = "https://zsign.io/mcp"
enabled = true
bearer_token_env_var = "MCP_BEARER_TOKEN"

Authentication is required. Replace the placeholder locally and never commit a secret.

Claude Code

.mcp.json

{
  "mcpServers": {
    "zsign-io": {
      "type": "http",
      "url": "https://zsign.io/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_BEARER_TOKEN"
      }
    }
  }
}

Authentication is required. Replace the placeholder locally and never commit a secret.

Claude Desktop

Settings → Connectors → Add custom connector

Name: zsign-io
Remote MCP URL: https://zsign.io/mcp

Add the URL as a custom connector, then complete its supported authorization flow. Claude Desktop remote connectors are configured in the UI.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "zsign-io": {
      "url": "https://zsign.io/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_BEARER_TOKEN"
      }
    }
  }
}

Authentication is required. Replace the placeholder locally and never commit a secret.

Visual Studio Code

.vscode/mcp.json

{
  "servers": {
    "zsign-io": {
      "type": "http",
      "url": "https://zsign.io/mcp",
      "headers": {
        "Authorization": "Bearer ${input:mcp-token}"
      }
    }
  },
  "inputs": [
    {
      "type": "promptString",
      "id": "mcp-token",
      "description": "zsign-io bearer token",
      "password": true
    }
  ]
}

Authentication is required. Replace the placeholder locally and never commit a secret.

Generic MCP

Client-specific MCP configuration

{
  "name": "zsign-io",
  "transport": "streamable-http",
  "url": "https://zsign.io/mcp",
  "headers": {
    "Authorization": "Bearer YOUR_BEARER_TOKEN"
  }
}

Authentication is required. Replace the placeholder locally and never commit a secret.

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

ENDPOINT 2

https://zsign.io/mcp/open

No auth detected

MCP server metadata

Name: zsign
Version: 1.28.1

Capabilities

experimentalpromptsresourcestools

Server instructions

zSign is a legally binding e-signature API (ESIGN/UETA) built for agents: create an account, buy prepaid credits, send envelopes. 1 credit = 1 envelope send. Unauthenticated tools: create_account, get_pricing. All other tools need `Authorization: Bearer zs_...` on the MCP HTTP request. Docs: https://zsign.io/llms.txt

Known tools 7

create_account

Create a zSign account and API key in one call — no email verification, no human steps.

Potential side effects

get_pricing

Credit packs and billing model (1 credit = 1 envelope send).

Potential side effects

check_balance

Current credit balance and available packs.

Inferred read-only

buy_credits

Create a Stripe Checkout session for a credit pack ('starter', 'growth', or 'scale' — see get_pricing).

Potential side effects

send_envelope

Send a PDF for legally binding signature.

Potential side effects

get_envelope_status

Envelope progress: session status, per-recipient signing status, and — once completed — the completed_document_id to pass to download_signed_document.

Inferred read-only

download_signed_document

Download the sealed, signed PDF.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.zsign]
url = "https://zsign.io/mcp/open"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "zsign": {
      "type": "http",
      "url": "https://zsign.io/mcp/open"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: zsign
Remote MCP URL: https://zsign.io/mcp/open

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "zsign": {
      "url": "https://zsign.io/mcp/open"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "zsign": {
      "type": "http",
      "url": "https://zsign.io/mcp/open"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "zsign",
  "transport": "streamable-http",
  "url": "https://zsign.io/mcp/open"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Trust Data Available

BuiltWith Trust API v2 evidence for zsign.io was fetched 2026-07-28T05:24:07.866Z.

Trust status Trusted

zsign.io is assessed as Trusted: Domain has an established technology history spanning over a year.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.