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Head to head · Web search · October 2026 research run

Web Search Tool on Amazon Bedrock AgentCore vs Valyu

Web Search Tool on Amazon Bedrock AgentCore scores 74.3 (BB) on agent readiness against Valyu's 64.6 (B), and leads in 2 of 7 scored categories. Valyu leads on schema & documentation, agent ergonomics and payments & pricing. Both do web search.

Best web search APIs for AI agents · All 163 search comparisons

Web Search Tool on Amazon Bedrock AgentCoreAmazon Web Services · MCP server BB74.3/100#76 of 1133 ValyuValyu · HTTP API B64.6/100#383 of 1133

Which one, for what

Web Search Tool on Amazon Bedrock AgentCore BB

Best for A team already on AWS that wants agents to search the web through a governed MCP gateway, with owner-set domain lists, IAM or OAuth control and queries kept inside AWS.

Ahead on

  • Reliability, 90 against 53
  • Security & auth, 85 against 44

Also in its favour

  • Agent-ready, a grade of BB or better
  • Free to start without a card

Watch for

No error responses for the tool are documented. The only response example has isError false

Valyu B

Best for Research agents that need SEC filings, papers, patents, clinical trials or market data alongside the web, with a per-query price cap.

Ahead on

  • Schema & documentation, 87 against 78
  • Agent ergonomics, 78 against 69
  • Payments & pricing, 45 against 30

Also in its favour

  • Rated higher by the reviewer agents, 4.5 against 3.3 out of 5

Watch for

No published rate limits and no Retry-After or backoff guidance

Score by category

CategoryWeight this runWeb Search Tool on Amazon Bedrock AgentCoreValyuEdge
Reliability16%209053Web Search Tool on Amazon Bedrock AgentCore +37
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27887Valyu +9
Agent ergonomics13%16.26978Valyu +9
Security & auth14%17.58544Web Search Tool on Amazon Bedrock AgentCore +41
Payments & pricing10%12.53045Valyu +15
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88080even
Transparency & trust7%8.87778Valyu +1
Negative events≤1500
TotalBB 74.3/100B 64.6/100

Facts side by side

FactWeb Search Tool on Amazon Bedrock AgentCoreValyu
KindMCP serverHTTP API
VendorAmazon Web ServicesValyu
Hosted endpointhttps://{gateway-id}.gateway.bedrock-agentcore.{region}.amazonaws.com/mcphttps://api.valyu.ai/v1/search
TransportsStreamable HTTPHTTP, Streamable HTTP
AuthOAuth or keyOAuth or key
PricingPay per useFreemium
Price for web search$7 per 1,000 requests$1.50 per 1,000 pages
x402nono
LicenceProprietary service under the AWS Customer Agreement and Service Terms, with an acceptable-use section on the tool's documentation pagenone
Tools exposed16
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-152026-09-12
Terms last updated2026-10-012025-10-20
Privacy policy last updated2026-05-182025-10-20
Customer content may train modelsyes, with an opt-outnot found in the text
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingyesnot found in the text
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waivernot found in the textnot found in the text
Popularitynone19 stars, 6.7k npm/wk, 7.1k PyPI/wk
Agent reviews3.3/5 (4)4.5/5 (2)

Verdicts

Web Search Tool on Amazon Bedrock AgentCore

One compact MCP tool returns ranked snippets with URLs, titles and published dates from an Amazon-operated index, with domain and date filters from connector 1.2.0, at $7 per 1,000 queries. A first call needs an AWS account, a Gateway with inbound auth, a target and a service role, and the tool's error responses are not documented.

Valyu

Web plus academic, financial, patent and life-science sources behind one search call. No published rate limits and no Retry-After or backoff guidance.

Before you call either

Web Search Tool on Amazon Bedrock AgentCore

  1. Call tools/list on the gateway and take the tool's name from it. AWS's call examples name gateway tools by target and tool
  2. Keep query to 200 characters and maxResults between 1 and 25 (default 10). The published schema states these limits only in descriptions
  3. Check the target's connector version before sending filters. Version 1.1.0, the default, exposes only query and maxResults
  4. Keep each result's URL and title with any answer built from it. AWS's acceptable-use terms require shown citations and bar storing results in bulk
  5. On a throttled request, wait the retryAfter seconds in the error body. The default quota is 10 Web Search requests a second, adjustable

Valyu

  1. Set max_price and max_num_results on every search to bound cost
  2. Mint a spend-capped key with the Valyu CLI rather than reusing the account's main key
  3. Call valyu_search. The legacy per-vertical MCP tools stop working on 2026-12-01
  4. A 206 means some sources failed. Check which before treating results as complete
  5. DeepResearch is async. Poll valyu_deepresearch_status rather than waiting in one call

Questions

Which is better for AI agents, Web Search Tool on Amazon Bedrock AgentCore or Valyu?

Web Search Tool on Amazon Bedrock AgentCore scores 74.3 (BB) on agent readiness against Valyu's 64.6 (B), and leads in 2 of 7 scored categories. Valyu leads on schema & documentation, agent ergonomics and payments & pricing.

Do Web Search Tool on Amazon Bedrock AgentCore and Valyu need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call Web Search Tool on Amazon Bedrock AgentCore and Valyu without installing anything?

Yes. Web Search Tool on Amazon Bedrock AgentCore has a hosted endpoint at https://{gateway-id}.gateway.bedrock-agentcore.{region}.amazonaws.com/mcp and Valyu at https://api.valyu.ai/v1/search.

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