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Vtiger API and MCP server

Vtiger has no agent connection of its own, and its API lists 0 requests on One Pilot. Sign in to Vtiger once in your own Cloud Browser, and your AI agent does the work there for you. The same tools work over MCP for agents and as a REST API for scripts.

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Not affiliated with Vtiger.

Vtiger has no API for this. So we run one for you.

Vtiger's own API, a GitHub MCP server and Cotlet compared
What you need Vtiger's APIGitHub MCP serverCotlet
Lead conversion, deal stages, case triage No Partly Yes, 10 tools
Acts as you, signed in 24/7 No No Yes, Cloud Browser
Fixed for you when Vtiger changes N/A No Yes, tested every 6h
Runs with your laptop off N/A No Yes, hosted

Checked Oct 22, 2026. Sources: Vtiger Help: API limits per edition · Vtiger Help: Where can I find the Access Key for Web Services · Vtiger Application Platform: REST API · Vtiger on Zapier

Your own Cloud Browser, on 24/7. Sign in once. We keep it connected.

  1. 01Sign in to Vtiger in your own Cloud Browser

  2. 02Connect it for your agents

  3. 03Cotlet keeps it signed in and working

How do I connect Vtiger to Claude, ChatGPT or my code?

AI agents connect over MCP, scripts call the REST API. Both reach the same 10 tools with one API key.

For AI agents: MCP

Add Cotlet to your agent once. Vtiger and every other app you connect show up as its tools.

  • Claude
  • ChatGPT
  • OpenClaw
  • Hermes
  • GrokBot
  • Cursor
  • n8n
  • Any MCP client
  1. 1

    Add Cotlet to your agent

    Claude Code
    claude mcp add --transport http cotlet \
  https://cotlet.dev/mcp/v1 \
  --header "Authorization: Bearer $COTLET_API_KEY"
    Cursor
    {
  "mcpServers": {
    "cotlet": {
      "url": "https://cotlet.dev/mcp/v1",
      "headers": {
        "Authorization": "Bearer ${COTLET_API_KEY}"
      }
    }
  }
}
    Codex
    # ~/.codex/config.toml
[mcp_servers.cotlet]
url = "https://cotlet.dev/mcp/v1"
bearer_token_env_var = "COTLET_API_KEY"

    Paste the snippet for your client. The same server and key serve every app you connect, so you do this once.

For scripts: REST API

Every tool is an endpoint under /api/v1/vtiger with its own method and path, such as PATCH /api/v1/vtiger/records/{record_id}/deal-stage, with the same API key. Our open-source repo has ready scripts to start from.

REST API docs

What can the Vtiger API and MCP server do?

10 tools on your own Vtiger account. Agents call them as operations of the MCP tools vtiger_read and vtiger_write; scripts call each one at its own REST endpoint, with the same inputs and answers.

API reference
Vtiger tools in Cotlet's MCP server and REST API
Tool What it does Access
list_contacts Contacts of your CRM with organization, lifecycle stage and owner; leads too when the Leads module is on. read
list_deals Deals with amount, sales stage, pipeline, expected close date and owner. read
get_deal One deal with its fields, related contact and journey tasks. read
list_cases Support cases with status, priority, group, owner and contact. read
get_case One case with its description, contact, SLA and current assignment. read
create_contact Create a contact with email, phone, organization and lifecycle stage. writeasks first
convert_contact_to_deal Convert a lead into a deal, as the Convert button does. writeasks first
update_deal_stage Move a deal to another sales stage or pipeline. writeasks first
create_case Open a support case for a contact, with or without an email to the customer. writeasks first
update_case Set a case's group, owner, priority, status or SLA. writeasks first

Scroll the table for all 10 tools.

Ask in plain words. Your agent does the rest.

All Vtiger use cases

Is it safe to connect Vtiger?

You sign in yourself in your own Cloud Browser, we never save your password, and anything that reaches your readers waits for your OK. The browser profile is encrypted in the EU. Independent scanners grade cotlet.dev A+.

Security overview

How much do the Vtiger API and MCP server cost?

One price for both: a tool call costs the same over MCP or REST. Free 7-day trial with 2,000 credits, no card needed. Then one-time credit packs, no subscription, valid 12 months. Most calls use 25 credits, and your Cloud Browser uses 50 credits a day while Vtiger is enabled for agents, so 20 calls a day come to 550 credits.

See full pricing
Cotlet credit packs: price, credits and calls at 25 credits each
Credits Price, one time Calls at 25 credits Per 1,000 credits
5,000 $29 200 $5.80
15,000 $79 600 $5.27
32,000 $149 1,280 $4.66
60,000 $249 2,400 $4.15

Only successful calls use credits; failed calls and timeouts cost nothing. At a balance of 0 calls pause, never a surprise charge. Authenticate with the Authorization: Bearer header.

Questions

Does Vtiger have an API?

Yes, Vtiger has a REST API, but its limits table lists 0 requests for One Pilot and 24,000 a day (30 a minute) for One Growth, and Vtiger has no official MCP server (checked 22 Oct 2026).

How do I get access?

Sign up free, open Vtiger under Integrations in the console and press Request access. Your free trial starts with your account, no card needed.

Is the MCP server different from the API?

No, only the way in. Cotlet builds each integration as a REST API and puts an MCP server on top, so both have the same 10 tools, the same inputs and answers, one API key and one price. AI agents such as Claude, ChatGPT or Cursor use MCP; scripts, cron jobs and HTTP steps in n8n, Make or Zapier use the REST API.

What is the Cloud Browser?

Your own Chrome that Cotlet runs for you in the EU, around the clock. You open it from the console, sign in to Vtiger yourself and press Enable for agents. Your agent's calls go through it, from its IP with its cookies, so Vtiger sees the browser you signed in with. Password saving is off and the profile is stored encrypted with AES-256-GCM.

Can my agent act without asking me?

Not on anything that reaches other people: create_contact, convert_contact_to_deal, update_deal_stage, create_case, update_case wait for your OK by default. You can switch that off per tool for scheduled runs.

Does Cotlet use the Vtiger REST API, and which edition do I need?

No. Cotlet works in your own signed-in CRM, so the REST API limits do not apply. Vtiger's limits table lists 0 requests for One Pilot, 24,000 a day for One Growth, 72,000 for One Professional and 120,000 for Enterprise (checked 22 Oct 2026). What your agent can see and change depends on your Vtiger role.

Does it work when leads are stored as contacts?

Yes. In Vtiger versions where leads are contacts with the Lifecycle Stage Lead, list_contacts filters on that field and convert_contact_to_deal uses the Convert button of the contact. When your CRM has the Leads module enabled, the tools use it and its Convert Lead form instead.

Should I use a Vtiger MCP server from GitHub instead?

Pick one if you want the code on your own computer and do not mind the upkeep: you install it, sign it in and fix it when Vtiger changes. Pick Cotlet if you want it hosted and kept working for you.

Can I use it in n8n, Make or Zapier?

Yes. Add https://cotlet.dev/mcp/v1 in n8n's MCP Client node, or call the REST endpoints from an HTTP step in Make or Zapier.

Who runs Cotlet?

Cotlet is run by Take Group, a Polish software company working since 2019. Take Group runs about 3,200 websites on its own systems and has its own DevOps team for infrastructure security. We built and used integrations like this inside the company for years before opening them as Cotlet.

Is Cotlet affiliated with Vtiger?

No. Cotlet is independent and not affiliated with Vtiger.

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