Can I get SecurityTrails spend per day from the API?

Not as a series. Derive it from how much the balance drops each day, ignoring top-ups.

Infrastructure data

How to get your SecurityTrails API usage, balance and spend programmatically

Yes. GET https://api.securitytrails.com/v1/account/usage returns current_monthly_usage and allowed_monthly_usage. These count queries, not dollars.

What the SecurityTrails API exposes

Signal	SecurityTrails
Balance	Yes
Spend history	No
Cost breakdown	No
Plan and quota	Yes
Cost on each response	No
Rate-limit headers	None
Credential	API key

Call it yourself

Credential. A SecurityTrails API key, sent in an all-caps APIKEY header.

Monthly usage

curl https://api.securitytrails.com/v1/account/usage \
  -H "APIKEY: $SECURITYTRAILS_API_KEY"

{ "current_monthly_usage": 1240, "allowed_monthly_usage": 2500 }

Trimmed to the fields Argus reads. Values are examples.

Gotchas

Over quota returns 429 unless you've turned on auto-billing for overage.
GET /v1/ping is a free key check.

How SecurityTrails charges

Subscription tiers with a monthly API-query allowance; over-quota returns 429 unless auto-billing overage is enabled. Prices third-party-reported (unverified); overage rate unpublished.

Plan	Monthly price
Free	$0
Professional	$500
Business	$1500
Enterprise	Contact sales

At zero. Over-quota → 429. Opt-in auto-billing meters overage before the quota is hit.

requests per second, per key. Account/plan-specific rps; exact value unpublished.

Or let Argus track it

Paste the key once. Argus keeps the ledger, and your coding agent reads it through the MCP server.

Reads the SecurityTrails balance every hour and keeps the series, so you get burn per day (top-ups never count as negative spend) and days until it hits zero.
Tracks the plan: the allowance, what's used this period, the reset date, and when you cross into overage.
With the SDK, counts each call and every 429 against the plan's allowance, since there's no meter to read.
Emails you on low balance, days to zero, a spend spike, or projected overage.
Hands all of it to your coding agent over MCP, so it can ask what a run cost or how much runway is left without leaving the editor.

> what has securitytrails cost today, and how long until it runs out?

get_overview       → securitytrails: mtd spend, burn per day, days to zero
get_request_costs  { "provider": "securitytrails", "limit": 25 }
get_advisories     → credits_low, spend_spike, rate_limit_low …

Questions

Does SecurityTrails have an API for its balance?: Yes. GET https://api.securitytrails.com/v1/account/usage returns current_monthly_usage and allowed_monthly_usage. These count queries, not dollars.
Can I get SecurityTrails spend per day from the API?: Not as a series. Derive it from how much the balance drops each day, ignoring top-ups.
What happens when SecurityTrails credits run out?: Over-quota → 429. Opt-in auto-billing meters overage before the quota is hit.
What key does Argus need for SecurityTrails?: A SecurityTrails API key, sent in an all-caps APIKEY header.

Every balance endpoint

The balance call for each provider, side by side.