RREA: Reverse Engineer Anything

Context cost warning: its tools/list is about 181,430 tokens (207 tools), 554% of a 32k context window and 91% of a 200k window, before you send a single message (raw tools/list payload 805,228 tokens). Load only the tools you need, or expect most of the context to go to tool definitions. Measured by counting the tokens in this server's tool list on 2026-10-24. How MCP context cost adds up

Editor's pick (editorial, not paid). Featuring does not change its score or rank.
GitHub stars: 377,343 as of 2026-10-24 12:54 CT. Count is GitHub's own stargazer counter as of the time shown; not independently checked. X News (AI-generated summary) reported growth from ~10k to over 200k stars in a week. Press and social reports of its growth (X): https://x.com/i/trending/2110328387881345185
Lawful use: Analyze only software you own or have permission to analyze.
Tool-call test (2026-10-24, direct MCP stdio client, no LLM): pass (core tools). 3 of 5 calls passed: objdump file headers and disassembly (found main) and open_binary worked out of the box; inspect_binary_layout and list_strings returned a clear provider_unavailable error because they need optional local tools that were not installed. Evidence: recorded tool-call log, Oct 24, 2026.

Transport (tested 2026-10-24): stdio

Score 95/100 · Tools 207 · Token cost ~181,430 · Compare · Last tested 2026-10-24 · Version tested 6.7.0 · Package rea-agents · Repo morluto/rea

Summary: REA: Reverse Engineer Anything completed an MCP handshake without credentials and exposed 207 tools.

Evidence summary

Handshake

pass

Tools listed

207

Context cost

181,430 model-visible tokens (name, description, inputSchema; tiktoken cl100k_base)
Extra payload (sent by the server, usually not read by the model): 623,798 tokens (largest: outputSchema ≈616,900); raw tools/list total 805,228. Clients differ in what they forward. Almost all outputSchema (~617k tokens): returned by tools/list but not normally sent to the model by clients. ranking · add up your servers' context cost

API key

No key needed for the tools we called

Tested

2026-10-24

Test results

Local-model readiness

Schema context cost: ~181,430 tokens for 207 tools (773,173 bytes) · about 2215% of an 8k context. Method: tiktoken cl100k_base over compact JSON of name+description+inputSchema (approximate).

Small-model friendly (schema heuristic, not a model result): low.

Small-model task runs: Not yet tested.

What we tested and what we didn't

Methodology: how we test. A high score means it installs and responds, not that it is safe to give it access to your data.

{
  "name": "rea-agents",
  "version": "6.7.0",
  "registry": "npm",
  "status": "working",
  "tested": "2026-10-24",
  "tools_count": 207,
  "tools_schema_tokens_est": 181430,
  "deprecated": false,
  "archived": false,
  "tests": {
    "install": [
      "pass",
      20,
      "`npm install rea-agents` (Node 20, Linux) succeeded in 13s."
    ],
    "handshake": [
      "pass",
      30,
      "MCP `initialize` + `tools/list` over stdio succeeded with no credentials; 207 tools listed in 2.4s."
    ],
    "maintenance": [
      "pass",
      25,
      "Repo pushed 0 days before test; 377,343 GitHub stars (as of 2026-10-24 12:54 CT)."
    ],
    "docs": [
      "partial",
      10,
      "README over 3,000 chars; install instructions present. Automated check of the package's own README (README shipped in npm package)."
    ],
    "license": [
      "pass",
      10,
      "MIT (OSI-approved)."
    ]
  }
}

Install

npx -y rea-agents mcpCopy

Tools listed

annotate_native_function, inspect_native_load_image, inspect_native_data_type, inspect_native_instruction, resolve_native_call_targets, address_name, comment, current_address, current_procedure, current_document, goto_address, inline_comment, list_bookmarks, list_documents, list_names, list_procedures, list_segments, list_strings, next_address, prev_address, procedure_address, procedure_assembly, procedure_callees, procedure_callers, procedure_info, read_function_instructions, search_bytes, read_bytes, address_to_file_offset, procedure_references, procedure_pseudo_code, resolve_containing_procedure, search_procedures, search_strings, set_address_name, set_addresses_names, set_bookmark, set_comment, set_inline_comment, unset_bookmark

Quick config

{
  "mcpServers": {
    "rea-reverse-engineer-anything": {
      "command": "npx",
      "args": [
        "-y",
        "rea-agents",
        "mcp"
      ]
    }
  }
}

Add to config Opens the config generator with this server selected.

{
  "mcpServers": {
    "rea-reverse-engineer-anything": {
      "command": "npx",
      "args": [
        "-y",
        "rea-agents",
        "mcp"
      ]
    }
  }
}

FAQ

Is REA: Reverse Engineer Anything deprecated?

No. rea-agents was not deprecated or archived when we last tested it on 2026-10-24.

What replaces REA: Reverse Engineer Anything?

Nothing; REA: Reverse Engineer Anything is not deprecated as of 2026-10-24.

Does REA: Reverse Engineer Anything need an API key?

No. It completed an MCP handshake with no credentials and listed 207 tools.

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