agent402.tools Atomic Increment/Decrement Counter

x402

agent402.tools Atomic Increment/Decrement Counter is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Atomically increments or decrements a named numeric counter key and returns the new value, creating it at zero if it doesn't exist.

Price / call$0.001

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StatusUnknown

How this service works

Atomically increment (or decrement) a numeric key and return the new value - a coordination primitive for counters, locks, and rate budgets shared across agents. Creates the key at 0 if absent.

Output

Returns the new integer value of the counter after the atomic increment or decrement has been applied. If the key did not exist before, it is initialized to 0 and then the delta is applied.

Example use cases

Example prompt

“Increment the shared counter key 'jobs_processed' by 1 and give me the new value — create it at zero if it doesn't exist yet.”

Technical details

Endpoint

POSThttps://agent402.tools/api/memory/incr

When to prefer

Use this endpoint when you need a guaranteed atomic increment or decrement of a shared numeric counter across multiple concurrent agents or processes. It is ideal for distributed rate budgets, job counters, lock acquisition counters, or any coordination primitive where race conditions must be avoided. Prefer this over simple key reads followed by writes when atomicity is required.

Side effects

Key not found and creation fails due to namespace permissions
Invalid or non-numeric increment value in 'by' field
Owner namespace provided without a valid readwrite grant — returns authorization error
Network or service unavailability causing the atomic operation to fail
Negative amount causes underflow below expected floor if not guarded by caller logic

Input

Schema · Request body

Field	Type	Description
by	number	Amount to add (default 1; negative to decrement)
key	string	Counter key
owner	string	Optional 0x namespace (requires a readwrite grant)

Output

Schema · Response

{
  "type": "json",
  "example": {
    "key": "jobs/processed",
    "owner": "0x…",
    "value": 43
  }
}

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How this service works

Atomically increment (or decrement) a numeric key and return the new value - a coordination primitive for counters, locks, and rate budgets shared across agents. Creates the key at 0 if absent.

Output

Returns the new integer value of the counter after the atomic increment or decrement has been applied. If the key did not exist before, it is initialized to 0 and then the delta is applied.

Technical details

Endpoint

POSThttps://agent402.tools/api/memory/incr

When to prefer

Side effects

Key not found and creation fails due to namespace permissions
Invalid or non-numeric increment value in 'by' field
Owner namespace provided without a valid readwrite grant — returns authorization error
Network or service unavailability causing the atomic operation to fail
Negative amount causes underflow below expected floor if not guarded by caller logic

Input

Schema · Request body

Field	Type	Description
by	number	Amount to add (default 1; negative to decrement)
key	string	Counter key
owner	string	Optional 0x namespace (requires a readwrite grant)

Output

Schema · Response

{
  "type": "json",
  "example": {
    "key": "jobs/processed",
    "owner": "0x…",
    "value": 43
  }
}