// SCAN REPORT

C4REQBER

32 tools. 16 can modify or destroy data without limits.

6 write tools that can modify data. Rate limits recommended.

Last updated: 19 Aug 2026

16 can modify or destroy data

16 read-only

32 tools total

Community server · catalogue entry checked 19/08/2026

How to control C4REQBER ↓

TOOL MAP

What C4REQBER exposes to your agents

Read (16) Write / Execute (6) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous C4REQBER tools

Execute · High c4_agent_solve This tool executes an external pipeline/workflow with side effects that depend entirely on user-supplied input (the problem definition). Execute · High c4_agent_turbo The tool executes a research pipeline rather than simply returning static data. Execute · Medium c4_agent_query This tool triggers an external agent to process a query and execute its reasoning/analysis pipeline. Execute · High c4_agent_spawn This tool spawns (creates and starts) a sub-agent process to run background tasks.

16 of C4REQBER's 32 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control C4REQBER

PolicyLayer is an MCP gateway — it sits between your AI agents and C4REQBER, and nothing reaches the server without passing your rules. These are the rules we recommend:

Rate limit write operations

{
  "c4_export": {
    "limits": [
      {
        "counter": "c4_export_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "agent_fingerprint": {
    "limits": [
      {
        "counter": "agent_fingerprint_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register C4REQBER — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON C4REQBER →

Instant setup, no code required.

FULL CATALOGUE

All 32 C4REQBER tools

EXECUTE 5 tools

Execute c4_agent_query Send a query to the c4reqber agent. The agent will use its skills (C4, TRIZ, Pipeline, etc.) to respond. Execute c4_agent_solve Run a full solve pipeline on a problem. Execute c4_agent_spawn Spawn a sub-agent for a background task. Returns sub-agent name for polling. Execute c4_agent_turbo Run deep research on a topic (28 knowledge sources, paradigm detection). Execute c4_codegen c4_codegen

WRITE 1 tools

Write c4_export c4_export

READ 16 tools

Read agent_fingerprint agent_fingerprint Read agent_process agent_process Read agent_search agent_search Read agent_solve agent_solve Read blast_solve blast_solve Read c4_agent_poll Poll a sub-agent for results by name. Read c4_agent_skills List all available c4reqber skills the agent can use. Read c4_agent_soul Show the agent Read c4_autoresearch c4_autoresearch Read c4_chain c4_chain Read c4_fingerprint c4_fingerprint Read c4_prove c4_prove Read c4_search c4_search Read c4_simulate c4_simulate Read c4_solve c4_solve Read c4_verify c4_verify

OTHER 10 tools

Other blast_auto blast_auto Other blast_flash blast_flash Other blast_turbo blast_turbo Other blast_turbofactory blast_turbofactory Other c4_bayesian c4_bayesian Other c4_causal c4_causal Other c4_meta c4_meta Other c4_social c4_social Other c4_transfer c4_transfer Other c4_triz c4_triz

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about C4REQBER

How do I prevent bulk modifications through C4REQBER? +

The C4REQBER server has 1 write tools including c4_export. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach C4REQBER.

How many tools does the C4REQBER MCP server expose? +

32 tools across 4 categories: Execute, Financial, Read, Write. 16 are read-only. 16 can modify, create, or delete data.

How do I enforce a policy on C4REQBER? +

Register the C4REQBER MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every C4REQBER tool call.

Deterministic rules across all 32 C4REQBER tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON C4REQBER →

Instant setup, no code required.

32 C4REQBER tools catalogued and risk-classified — across an index of 46,500+ MCP servers.

// WHERE THIS COMES FROM

These policies come from C4REQBER's registry record.

The record behind this page: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →