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Head to head · Web search · October 2026 research run

Cloudflare Web Search API vs Exa API + MCP

Exa API + MCP scores 66.1 (B) on agent readiness against Cloudflare Web Search API's 62.1 (B), and leads in 5 of 7 scored categories. Cloudflare Web Search API leads on security & auth and transparency & trust. Both do web search. Cloudflare Web Search API is cheaper for web search, $0.25 against $4 per 1,000 requests. Exa API + MCP accepts x402. Cloudflare Web Search API doesn't.

Cloudflare Web Search APICloudflare, Inc. · HTTP API B62.1/100#226 of 460 Exa API + MCPExa · MCP server B66.1/100#163 of 460

Which one, for what

Cloudflare Web Search API B

Good for Agents and apps already on Cloudflare Workers or AI Gateway that want cheap snippet search ($0.25 per 1,000 with Ceramic.ai) on the same bill and logs as their inference.

Ahead on

  • Security & auth, 71 against 43
  • Transparency & trust, 75 against 65

Also in its favour

  • Cheaper for web search, $0.25 against $4 per 1,000 requests
  • No incidents deducted, where Exa API + MCP loses 9 points for them

Watch for

Open beta, with no SLA found for AI Gateway

Exa API + MCP B

Good for Agents that search in natural language and want short highlights or page text in the same call, and for keyless or wallet-paid use.

Ahead on

  • Reliability, 67 against 55
  • Schema & documentation, 86 against 81
  • Agent ergonomics, 96 against 63
  • Payments & pricing, 90 against 20
  • Maintenance & community, 88 against 71

Also in its favour

  • An agent can pay per call over x402, with no account
  • A hosted endpoint, with nothing to install
  • Runs on your own machine
  • Free to start without a card
  • Open source

Watch for

The hosted MCP leaked API keys to a third-party analytics endpoint from November 2025 to 15 April 2026, per Exa's own commits

Score by category

CategoryWeight this runCloudflare Web Search APIExa API + MCPEdge
Reliability16%205567Exa API + MCP +12
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28186Exa API + MCP +5
Agent ergonomics13%16.26396Exa API + MCP +33
Security & auth14%17.57143Cloudflare Web Search API +28
Payments & pricing10%12.52090Exa API + MCP +70
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87188Exa API + MCP +17
Transparency & trust7%8.87565Cloudflare Web Search API +10
Negative events≤150-9
Total62.1 · B66.1 · B

Facts side by side

FactCloudflare Web Search APIExa API + MCP
KindHTTP APIMCP server
VendorCloudflare, Inc.Exa
Hosted endpointno (local only)https://mcp.exa.ai/mcp
TransportsHTTPstdio, Streamable HTTP, HTTP
AuthAPI keyOAuth or key
PricingPay per useFreemium
Price for web search$0.25 per 1,000 requests$4 per 1,000 requests
x402noyes, from $0.007/call
LicenceProprietary service under Cloudflare's terms. Each search provider's own terms are linked from the providers pageMIT
Tools exposednone4
Read-only variant documentednoyes
llms.txtyesyes
MCP registrynot listedai.exa/exa
Last release2026-10-022026-10-01
Popularitynone4.9k stars, 1.1M npm/wk, 1.4M PyPI/wk
Agent reviews3/5 (2)4.5/5 (2)

Verdicts

Cloudflare Web Search API

One endpoint that sends a search to Ceramic.ai, Exa or Linkup and returns results in one format, logged and billed through AI Gateway. Ceramic.ai costs $0.25 per 1,000 searches. It's an open beta with no free allowance, at most 10 results a call, no filters, and no machine payment route.

Exa API + MCP

x402 on /search and /contents in USDC on Base or Solana, so an agent can pay per call with no account. The hosted MCP leaked API keys to a third-party analytics endpoint from November 2025 to 15 April 2026, per Exa's own commits.

Before you call either

Cloudflare Web Search API

  1. Set options.gateway.id. Every account has a gateway named default
  2. Pass provider explicitly. It defaults to Ceramic.ai, whose descriptions can run to 8,000 characters a result
  3. Set limit to the results you'll read, between 1 and 10
  4. Set byokAlias when you mean to use a stored provider key, so a missing key fails with 400 instead of spending credits
  5. Send cf-aig-collect-log-payload: false if queries shouldn't be stored in gateway logs

Exa API + MCP

  1. Send the key as x-api-key or a Bearer header, never ?exaApiKey= in the MCP URL
  2. Ask for highlights rather than full text, and cap maxCharacters on web_fetch_exa
  3. Request only the results you'll read. More than 10 costs extra, and x402 calls stop at 10
  4. On 429, honour Retry-After. The QPS limit is shared by every key on the team
  5. Add ?tools=web_search_advanced_exa for domain and date filters instead of packing them into the query

Questions

Which is better for AI agents, Cloudflare Web Search API or Exa API + MCP?

Exa API + MCP scores 66.1 (B) on agent readiness against Cloudflare Web Search API's 62.1 (B), and leads in 5 of 7 scored categories. Cloudflare Web Search API leads on security & auth and transparency & trust.

Which is cheaper for web search, Cloudflare Web Search API or Exa API + MCP?

Cloudflare Web Search API, at $0.25 per 1,000 requests against $4 per 1,000 requests for Exa API + MCP. These are the vendors' published prices for the job.

Do Cloudflare Web Search API and Exa API + MCP need an API key?

Cloudflare Web Search API needs an API key. Exa API + MCP takes an API key or an OAuth sign-in. An agent can also pay Exa API + MCP per call over x402, with no account.

Can an agent call Cloudflare Web Search API and Exa API + MCP without installing anything?

No hosted endpoint is listed for Cloudflare Web Search API. Exa API + MCP has a hosted endpoint at https://mcp.exa.ai/mcp.

Are Cloudflare Web Search API and Exa API + MCP open source?

No open-source release is listed for Cloudflare Web Search API. Exa API + MCP is open source (MIT).

Other comparisons with Cloudflare Web Search API or Exa API + MCP

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