agent-rate-limiter-mcp 1.0.0

Fleet-wide shared rate limiter for A2A + multi-MCP deployments. Most MCP servers rate-limit independently — a hostile agent hitting 10 MCPs gets 10x quota. This MCP is the shared counter: every MCP checks here before allowing a call. Sliding window + concurrency grants + signed enforcement attestations. By MEOK AI Labs.

Agent Rate Limiter MCP

Fleet-wide shared rate limiter for A2A + multi-MCP deployments.

Most MCP servers rate-limit independently. A hostile or runaway agent hitting 10 different MCPs gets 10× its quota. This MCP is the shared counter — every MCP in the fleet checks here before allowing a call.

By MEOK AI Labs.

Tools

• acquire — request a rate-limit slot for (tenant, agent, operation). Returns {allowed, current, limit, retry_after_sec}.
• release — release an in-flight grant
• status — inspect current usage for a tenant
• set_quota — Pro: override default quota per (agent, operation)
• reset_counters — Pro: clear counters for emergency override
• sign_rate_limit_attestation — Pro: cryptographically signed enforcement evidence

Use cases

• A2A orchestration where one buggy agent can DoS the stack
• Shared per-tenant quotas across multiple MCPs
• Pre-flight capacity check before expensive calls (LLM, external APIs)
• Fairness between concurrent agent pairs
• Regulator evidence: signed attestation proves you were enforcing quotas during an incident window

Install

pip install agent-rate-limiter-mcp

Claude Desktop

{
  "mcpServers": {
    "rate-limiter": { "command": "agent-rate-limiter-mcp" }
  }
}

Example

# From your orchestrator MCP, before dispatching to worker-agent:
result = acquire(
    tenant_id="acme-corp",
    agent_id="orchestrator:supervisor:worker",
    operation="llm_call",
    window_sec=60,
    weight=1,
)
if result["allowed"]:
    # proceed with the call
    do_the_thing()
    release(tenant_id, agent_id, result["grant_id"])
else:
    # back off for result["retry_after_sec"] seconds
    ...

Tiers

• Free — 100 acquire/day per caller, 60-second window
• Pro £199/mo — unlimited acquires + custom quotas + signed attestations — subscribe
• Enterprise £1,499/mo — multi-tenant + custom algorithms (token-bucket, leaky-bucket) + audit trail — subscribe

Related MEOK MCPs

• agent-audit-logger-mcp — signed A2A call log
• agent-policy-enforcement-mcp — per-agent-pair IAM
• a2a-governance-bridge-mcp — map A2A to compliance frameworks
• meok-attestation-verify — verify signed certs

License

MIT — MEOK AI Labs, 2026.