transit402.dev
Active subway service alerts with direction, severity, and estimated delay minutes
OtherLiveeip155:8453Exactvia cdp
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 14 snapshots so far.
$2.30
Verified settled volume
115 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-07-28 13:26Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x687E3217668DDe7c32478A3F2613750c8Bd505E9The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"type": "https://paymentauth.org/problems/payment-required",
"title": "Payment Required",
"detail": "Payment is required (Active subway service alerts with direction, severity, and estimated delay minutes).",
"status": 402,
"challengeId": "2TRTBV5w3KVS2WrV7d5wl6gTosuiaMJEi-rei37KJYU"
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.02USDC≈ $0.02 USD
on Base · exact scheme
Pay 0.02 USDC on Base to 0x687E…505E9. The signed payment is good for 5 minutes.
- Paid to
- 0x687E…505E9
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 20000 smallest units
- Buys
- Active subway service alerts with direction, severity, and estimated delay minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x687E3217668DDe7c32478A3F2613750c8Bd505E9",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"resource": "https://transit402.dev/subway/alerts",
"description": "Active subway service alerts with direction, severity, and estimated delay minutes",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"limit": 10,
"lines": []
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"results": [
{
"lines": [
"L"
],
"effect": "SIGNIFICANT_DELAYS",
"header": "L train delays",
"severity": "delays",
"direction": "both",
"description": "L trains are running with delays of 10-15 minutes due to a signal problem.",
"active_until": null,
"estimated_minutes": "10-15"
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"properties": {
"limit": {
"type": "integer",
"default": 20,
"maximum": 50,
"minimum": 1,
"description": "Optional maximum number of alerts to return (1–50, default 20)."
},
"lines": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 26,
"description": "Optional list of subway line letters/numbers to filter by (e.g. [\"L\", \"G\"]). Omit or pass an empty array to get all currently active alerts. GET clients may pass a comma-separated string."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"results"
],
"properties": {
"results": {
"type": "array",
"items": {
"type": "object",
"required": [
"lines",
"effect",
"severity",
"direction",
"header",
"description"
],
"properties": {
"lines": {
"type": "array",
"items": {
"type": "string"
},
"description": "Subway lines affected by this alert."
},
"effect": {
"type": "string",
"description": "Raw GTFS-RT Alert.Effect enum: NO_SERVICE, REDUCED_SERVICE, SIGNIFICANT_DELAYS, DETOUR, ADDITIONAL_SERVICE, MODIFIED_SERVICE, OTHER_EFFECT, UNKNOWN_EFFECT, STOP_MOVED."
},
"header": {
"type": "string",
"description": "Short summary text from the alert header."
},
"severity": {
"enum": [
"no_service",
"reduced",
"delays",
"detour",
"info"
],
"type": "string",
"description": "Simplified severity bucket normalized from effect. Prefer severity over effect for agent decisioning."
},
"direction": {
"enum": [
"both",
"Uptown",
"Downtown"
],
"type": "string",
"description": "Which direction is affected. 'both' for route-level alerts or alerts affecting both directions of a stop."
},
"description": {
"type": "string",
"description": "Full human-readable description. Often contains specific delay minutes when the MTA provides them."
},
"active_until": {
"type": [
"string",
"null"
],
"description": "ISO 8601 timestamp when the currently-active period ends, or null if open-ended."
},
"estimated_minutes": {
"type": [
"string",
"null"
],
"description": "Delay in minutes extracted from description text when present (e.g. '10-15'). Null when no structured minute estimate is in the alert text."
}
},
"additionalProperties": false
}
}
},
"additionalProperties": false
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-07-28 13:26Z
- Last indexed by Roundhouse
- 2026-08-27 13:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 16:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 14 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service transit402.dev and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=transit402.dev' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://transit402.dev/subway/alerts, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.