Guardian Search API + MCP

Search infrastructure for AI agents.

Ship live web search without maintaining search-engine integrations, brittle browser flows, or ad-hoc result parsing. Guardian returns ranked, typed results through one production API and MCP surface.

View integration

1,000 free credits No card to start API keys + usage metering Typed MCP tools

POST /v1/business/search search_web

Best SOC 2 note-taking app for teams under $15 / seat

Web News Shopping Travel

Structured results JSON

1. title, URL, rank, source engines
2. intent, corrections, vertical metadata
3. request credits, remaining quota, latency

Multi-engine retrieval One contract

Built for applications and agent runtimes

Node.js TypeScript Claude Cursor MCP hosts Custom agents

Product

One search layer. Multiple retrieval modes.

Guardian turns the search stack already powering Guardian Browser into a developer product with authenticated access, predictable usage, and stable response shapes.

Resilient multi-engine search

Fan out across configured providers, merge overlapping results, recover from provider failures, and keep the caller on one API contract.

Typed response Useful fields instead of scraped pages.

Structured outputs by default

Build flows that depend on consistent JSON instead of page layouts that change underneath your application.

{"rank":1,"title":"...","url":"...","score":0.94}

Usage you can operate

Every paid API request exposes request IDs, plan information, rate-limit state, and remaining monthly credits.

Web + vertical search

Search web, news, images, video, shopping, finance, travel, and discussions from the same client.

Guardian Search MCP

Use search_web, search_shopping, discover_sites, and finance_quote over Streamable HTTP.

API-key isolation

Issue and revoke scoped keys per account. Guardian stores only one-way hashes of secret API keys.

Billing-ready

Free, Developer, Growth, Scale, and Enterprise plans share one credit ledger with Stripe subscription hooks.

Pricing

Start free. Pay when search becomes infrastructure.

One credit covers up to 10 requested search results. Plans reset monthly. Paid checkout appears when Stripe price IDs are configured in production.

Free $0 forever

1,000 credits / month
10 requests / minute
API + MCP-compatible key
Community support

Popular Developer $49 per month

25,000 credits / month
120 requests / minute
All search verticals
Email support

Growth $249 per month

200,000 credits / month
600 requests / minute
Priority support
Billing portal

Scale $999 per month

1,000,000 credits / month
2,000 requests / minute
Priority onboarding
Higher-volume production use

Enterprise

Custom limits, support, and deployment requirements.

Talk to WunderCorp

Developers

Install the SDK. Search in minutes.

The official package is prepared as @wundercorp/guardian. The same API key works with the JSON API and, when production enforcement is enabled, Guardian Search MCP.

Official JavaScript / TypeScript SDK

Typed methods for web, news, images, video, shopping, travel, discussions, finance, plan discovery, and MCP configuration.

Direct HTTP

Use POST /v1/business/search with a Bearer API key from any runtime that supports HTTPS.

MCP-native

Connect to https://mcp.guardianbrowser.sh/v1 and send the same key in the Authorization header.

Install

npm install @wundercorp/guardian

TypeScript

import Guardian from "@wundercorp/guardian";

const guardian = new Guardian({
  apiKey: process.env.GUARDIAN_API_KEY
});

const results = await guardian.searchWeb(
  "best SOC 2 note-taking apps",
  { count: 10, region: "US" }
);

Agent runtime

{
  "mcpServers": {
    "guardian_search": {
      "transport": "streamable_http",
      "url": "https://mcp.guardianbrowser.sh/v1",
      "headers": {
        "Authorization": "Bearer gdn_live_..."
      }
    }
  }
}

Direct API

curl -sS https://api.guardianbrowser.sh/v1/business/search \
  -H 'Authorization: Bearer gdn_live_...' \
  -H 'Content-Type: application/json' \
  -d '{"query":"security browser","count":10,"vertical":"all"}'

Account

Your search control plane.

Start with the free plan.

Create an account, issue a scoped API key, and use the first 1,000 credits without a card.

Signed in as —

Plan —

Credits used —

Credits remaining —

New API key · shown once

API keys

Scoped · revocable · hashed at rest

Production

Commercial controls without splitting the search stack.

The same deployment serves the consumer browser, the public compatibility API, the metered business API, and the dedicated MCP hostname.

Scoped API keys

Separate search, finance, and mcp scopes while keeping one organization quota.

Transactional metering

Monthly credit consumption is idempotent and quota checks happen in the same database transaction as usage writes.

Stripe subscription hooks

Checkout, customer portal, signed webhook verification, and plan state are built into the API layer.

Operational headers

Every business request can surface request IDs, plan, credit balance, and per-minute rate-limit state.

Guardian Search · WunderCorp

Make search a dependency, not a project.

Start on the free tier, integrate through the SDK or MCP, and move to a paid plan when search becomes part of production.

OpenAPI schema