mcp-server-jina-java

Provides an MCP server (stdio/transport) that uses Jina Reader API to (1) search the web and return SERP results and (2) read a given URL and fetch its content.

Evaluated Apr 04, 2026 (16d ago)

Repo ↗ Ai Ml mcp web-search content-fetch jina agent-tools java

⚙ Agent Friendliness

/ 100

Can an agent use this?

🔒 Security

/ 100

Is it safe for agents?

⚡ Reliability

/ 100

Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality

Documentation

Error Messages

Auth Simplicity

Rate Limits

🔒 Security

TLS Enforcement

Auth Strength

Scope Granularity

Dep. Hygiene

Secret Handling

Uses an external API key (strength depends on Jina), but README does not show secure secret storage patterns (e.g., env vars/secret manager) nor does it describe TLS/enforcement or scope granularity. Tool surface potentially enables arbitrary URL fetching—agents should apply allowlists/validation to reduce SSRF/open-fetch risks.

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

You want an MCP tool surface for web search + content fetching backed by Jina Reader API, and you can supply the needed API key.

Avoid When

You need strong guarantees around data handling, content filtering, or clearly documented reliability behaviors from this server implementation (not provided in the README).

Use Cases

• Agentic web research workflows that need SERP + page content retrieval
• RAG ingestion where sources are discovered via search then fetched
• Summarization pipelines that fetch and clean web page content via a dedicated tool interface

Not For

• Use as a general-purpose web crawler without constraints/guardrails
• Systems requiring an official/validated OpenAPI/SDK contract for MCP tooling

Interface

REST API

GraphQL

gRPC

MCP Server

Yes

SDK

Webhooks

Authentication

Methods: Jina API key provided via command-line/system property (as shown in README config)

OAuth: No Scopes: No

README indicates passing `jina.api.api-key` as a JVM system property; no explicit scopes/least-privilege model described.

Pricing

Free tier: No

Requires CC: No

No pricing information for the MCP server or underlying Jina API is included in the README excerpt.

Agent Metadata

Pagination

none

Idempotent

False

Retry Guidance

Not documented

Known Gotchas

⚠ No documented rate limiting or retry/backoff behavior for MCP tools
⚠ No documented output schema for SERP/content beyond tool names and a couple input fields
⚠ Supplying API key via config suggests local process arguments/system properties; agents should avoid logging secrets

Alternatives

Other MCP servers for browsing/search (if available) Direct calls to Jina Reader API from your application using Jina’s documented HTTP API Browser automation + extraction tools (e.g., Playwright + reader/extractor) when you need custom extraction logic

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API endpoint ↗ Agent guide ↗ Report inaccuracy

Scores are editorial opinions as of 2026-04-04.