Your Agent
Burned $4,000
Overnight.
Budget Limits
Stop It at $10.
One infinite loop. One recursive tool chain. One hallucinated API call repeated 10,000 times. That's all it takes to turn a $0.002 agent call into a $4,000 overnight disaster. SupraWall Budget Limits set hard, deterministic caps that no LLM can talk its way around.
🟢 Within budget
These Happened.
To Real Teams. Last Month.
Recursive Research Agent
A LangChain agent tasked with market research entered an infinite search-summarize-search loop at 3AM. By 7AM it had consumed 47 million tokens across 12,000 API calls.
The Helpful Emailer
A CrewAI agent hallucinated that it needed to send follow-up emails to every contact in the database. It called the email API 2,400 times before the team noticed.
Parallel Database Drain
An AutoGen multi-agent swarm spawned 8 sub-agents that each ran the same expensive aggregation query in parallel, repeatedly.
With SupraWall Budget Limits, every one of these incidents would have been stopped at the cap you set.
Architecture
Three Layers.
Zero Overruns.
Hard Budget Cap
Dollar Limit Per Agent Per Day
Set a dollar limit per agent, per day ($10/day, $50/day, $500/day). SupraWall tracks accumulated cost in real time by multiplying token consumption by the model's per-token price. When the cap is reached: hard stop. No exceptions, no overrides, no matter what the LLM requests.
Circuit Breaker
Loop Detection Before Budget Impact
SupraWall analyzes tool call patterns in real time. If it detects repetitive identical calls (configurable threshold), it triggers the circuit breaker immediately — before the budget cap is even reached. Catches infinite loops in seconds, not hours.
Session Token Limit
Max Token Count Per Session
Independent of dollar cost, set a maximum token count per session. Prevents long-running agents from accumulating excessive context windows that degrade performance and inflate costs. Works with streaming, extended thinking, and multi-agent conversations.
Interactive Calculator
What Does an Uncontrolled Agent Really Cost?
Monthly Cost WITHOUT Limits
$1.9K
Assuming agents run uncapped
Monthly Cost WITH $10/day Cap
$1.5K
Savings: $375/month
Worst-Case Incident (1 Loop)
$1.3K
Infinite loop for 10 minutes
Why Not Just...
Deterministic Limits.
Not Rate-Limit Hacks.
| Capability | SupraWallBudget Limits | API ProviderRate Limits | DIY TokenCounting | Portkey /LLM Gateway |
|---|---|---|---|---|
| Hard dollar cap per agent | — | PARTIAL | ||
| Infinite loop circuit breaker | — | — | — | |
| Per-session token limits | — | PARTIAL | ||
| Works at SDK level (not gateway) | — | — | ||
| Agent self-correction on budget hit | — | — | PARTIAL | |
| EU AI Act compliant logging | — | — | — | |
| Combined with vault + tool interception | — | — | — | |
| Latency overhead | 1.2ms | N/A | 5-20ms | 10-50ms |
Integration
Three Lines.
Total Cost Control.
import { secure_agent } from "suprawall";
const secured = secure_agent(myAgent, {
budget: {
daily_limit_usd: 10, // Hard stop at $10/day
session_tokens: 500_000, // Max 500K tokens per session
circuit_breaker: {
max_identical_calls: 10, // Kill after 10 repeated calls
window_seconds: 60, // Within 60-second window
},
},
on_budget_exceeded: "halt", // "halt" | "notify" | "degrade"
on_loop_detected: "halt",
});
// That's it. No agent can spend beyond $10/day.
// Infinite loops are caught in < 60 seconds.$0+
Capital Protected from Runaway Agents
0
Infinite Loops Caught This Month
1.2ms
Average Enforcement Latency
Frequently Asked Questions
How Much Did Your Agents Spend Last Night?
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Free tier includes 10,000 operations. No credit card required.
Deep Dives
Learn More About Budget Control
AI Agent Runaway Costs
How agents burn $4,000 overnight — and the 4 root causes you must understand.
How to Set Token Limits
Step-by-step implementation for LangChain, CrewAI, AutoGen, and SupraWall.
Infinite Loop Detection
3 detection strategies and circuit breaker patterns to kill runaway agents.
LLM Cost Calculator
Calculate your real AI agent costs — daily, monthly, and worst-case loop scenario.