What Is Agent Spend?
Agent spend is the money autonomous agents move — inference tokens, tool calls, data purchases, and payments on machine rails.
The four buckets
Inference: LLM tokens per call.
Tools: paid APIs and services called mid-task.
Data: vendors and datasets agents buy.
Payments: settlements on x402, AP2, AgentKit.
Why it's different
No human reviews each transaction — autonomy is the point.
Spend compounds: retries, fan-out, and loops multiply.
The control
A spend firewall evaluates every proposed transaction before it happens: APPROVED, BLOCKED, or FLAGGED.
FAQ
Is agent spend just API costs?
No — API costs are one bucket. Tools, data, and payments are the rest.
Who controls it?
Deterministic rules in front of the money path — not prompts.
Related
Stop the next $12,400 night.
One API call (or MCP tool) in front of every agent transaction — APPROVED, BLOCKED, or FLAGGED, deterministic, ~5 ms, fully logged.
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