Borrowing it
Nothing to install: this file belongs to zx8086/mcp-server-elasticsearch. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/zx8086/mcp-server-elasticsearch/master/CLAUDE.mdgit clone --depth 1 https://github.com/zx8086/mcp-server-elasticsearchWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/zx8086/mcp-server-elasticsearch/claude-md)<a href="https://agentmods.dev/instructions/zx8086/mcp-server-elasticsearch/claude-md"><img src="https://agentmods.dev/badge/instructions/zx8086/mcp-server-elasticsearch/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/zx8086/mcp-server-elasticsearch/claude-md"><img src="https://agentmods.dev/badge/instructions/zx8086/mcp-server-elasticsearch/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00989 | $0.00989 |
| Opus 5.5 | $0.00396 | $0.00396 |
| Sonnet 5.5 | $0.00198 | $0.00198 |
| Haiku 4.5 | $0.00099 | $0.00099 |
Grade A, and why
mcp-server-elasticsearch CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Project: MCP Server Elasticsearch
Elasticsearch MCP server enabling AI assistants to interact with Elasticsearch clusters. 96+ tools across 19 categories for comprehensive operations. Built with TypeScript on Bun runtime.
Commands
bun run dev # Start dev server with hot reload
bun run build # Build production bundle
bun run test # Run unit + validation tests
bun run test:all # All tests (comprehensive)
bun run test:watch # Live testing during development
bun run lint # Biome linting
bun run lint:fix # Fix linting issues
bun run format # Format code
bun run validate-config # Validate .env configuration
bun run validate-config:full # Validate + test ES connection
bun run test-connection # Test Elasticsearch connectivity
LOG_LEVEL=debug bun run dev # Enable debug logging
Tool Validation (Critical)
Always validate changes by starting the server and calling tools directly:
bun run build && bun run dev
# In another terminal:
echo '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"elasticsearch_list_indices","arguments":{"limit":5}}}' | bun run dist/index.js
Do NOT use bun run inspector - it requires browser access.
Architecture
Configuration System
Single source of truth pattern: defaultConfig object holds all defaults, Zod schemas validate without .default(), environment overrides merged before validation. Key file: src/config.ts.
Transport Modes
Set via MCP_TRANSPORT: stdio (default, CLI/desktop) or sse (web/n8n integration). Handling in src/index.ts.
Tool Organization (src/tools/)
19 categories: core, document, search, index_management, indices, mapping, alias, cluster, bulk, analytics, advanced, diagnostics, ilm, watcher, template, tasks, enrich, autoscaling, notifications.
Security Model
- Read-only mode (
src/utils/readOnlyMode.ts): strict or warning mode - Security validation (
src/utils/securityEnhancer.ts): SQL injection, XSS, command injection detection with Elasticsearch-specific exemptions (e.g.,logs-*,metrics-*patterns) - Read-only tools skip security validation
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 116 lines · 989 tokens per session scan A abb4efac2dbe
mcp-server-elasticsearch CLAUDE.md is an instructions file published in the GitHub repository zx8086/mcp-server-elasticsearch (1 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 989 tokens to every session, about $0.0040 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
mcp-server-elasticsearch CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| mcp-server-elasticsearch CLAUDE.mdzx8086/mcp-server-elasticsearch | Instructions file | 1 | 8mo ago | Apache-2.0 | A | 989 | Claude Code |
| plan-forge caching.instructions.mdsrnichols/plan-forge | Instructions file | 6 | 2d ago | MIT | A | 733 | GitHub Copilot |
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