The API for U.S. Government Contracting Data.

Real-time opportunities, federal contracts, entities, and spending — delivered through one fast, modern API.

One click in Claude or ChatGPT — no API key needed.

# Basic REST example (no SDK required)

import requests

response = requests.get(
    "https://tango.makegov.com/api/opportunities/",
    params={"naics": "541512", "active": "true"},
    headers={"X-API-KEY": "your-api-key"},
)

print(response.json())

Real-Time Opportunity Data

Notices refreshed every 20–60 minutes, including full historical lineage.

Unified Contracts & Entities

Contracts, IDVs, subawards, and entity metadata — normalized into predictable models.

Built for Developers & AI Agents

Modern REST API, stable schemas, SDKs for Python & Node — plus a native MCP connector for Claude, ChatGPT, Claude Code, and Cursor.

Unified Government Data

Tango normalizes messy federal data sources into consistent, developer-friendly models.

Fast Search & Filtering

Full-text and semantic search, smart filters, strong pagination, and predictable queries.

Who Uses Tango?

Government vendors
Integrators
Data platforms
Analytics tools
Compliance products
Research organizations

Get Started in Minutes

from tango import TangoClient

client = TangoClient(api_key="your-api-key")

opps = client.list_opportunities(naics="541512", active=True, limit=10)
print(f"Found {opps.count} open opportunities")

for opp in opps.results:
    print(opp["title"], opp["response_deadline"])

Most endpoints require an API key. You can obtain one from the Tango API portal.

const { TangoClient } = await import("@makegov/tango-node");

const client = new TangoClient({
    apiKey: process.env.TANGO_API_KEY,
});

async function main() {
    const opps = await client.listOpportunities({ naics: "541512", active: true, limit: 5 });
    console.log("Found", opps.count, "open opportunities");

    for (const opp of opps.results) {
        console.log(opp.title, opp.response_deadline);
    }
}

main();

# Claude — one click, OAuth sign-in, no API key
# https://tango.dev/claude

# ChatGPT — one click, from the app directory
# https://tango.dev/chatgpt

# Claude Code
claude mcp add --transport http tango https://tango.dev/mcp

# Cursor — ~/.cursor/mcp.json
{ "mcpServers": { "tango": { "url": "https://tango.dev/mcp" } } }

Then ask: "Which IT contracts worth $1M–$30M expire in the next 12 months — and who's the incumbent?" Any MCP client can connect to https://tango.dev/mcp — see the MCP guide.