# Saylor Innovations Transit — London Real-Time Arrivals

> Saylor Innovations Transit — London Real-Time Arrivals is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-03).

Returns real-time arrival information for London Tube, Elizabeth line, DLR, Overground, and bus stops by station or stop name

## Facts

- Endpoint: GET https://saylorinnovations.com/api/transit/london/arrivals?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-transit-london-real-time-arrivals-cdc6306f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1ktjau8znSAUzmdj9v3Ij

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability saylor-innovations-transit-london-real-time-arrivals-cdc6306f
```

Example prompt: What are the next arrivals at Kings Cross — Tube, Elizabeth line, and buses — right now?

## When to prefer this

Use this endpoint when you need live, real-time arrival data specifically for London's TfL network (Tube, Elizabeth line, DLR, Overground, buses). Prefer this over general transit APIs when the user is specifically in London and needs current, up-to-the-minute departure board information rather than scheduled timetables.

## Known failure modes

- Stop name not found or misspelled — 'found' returns false with an empty arrivals array
- Ambiguous stop name matching multiple stations — may return unexpected results
- TfL data feed disruption — may return empty arrivals even for valid stops
- Missing required 'stop' query parameter — likely returns an error or empty response
- Non-London stations queried — endpoint only covers London TfL network

## How this service works

London Real-Time Arrivals (Tube, Elizabeth line, DLR, Overground, buses). London real-time arrivals at any Tube, Elizabeth line, DLR, Overground, tram or bus stop by name (interchange hubs included): line, platform, destination, minutes away, current train location. Powered by TfL Open Data.

## Output

Returns a JSON object with a 'found' boolean indicating whether the stop was recognised, and an 'arrivals' array of objects describing upcoming vehicle arrivals — including vehicle type, line, destination, and expected arrival time — for the queried London station or stop.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "HEAD"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "stop": {
       "type": "string",
       "description": "station or stop name, e.g. Oxford Circus, Kings Cross (query)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "found"
     ],
     "properties": {
      "found": {
       "type": "boolean"
      },
      "arrivals": {
       "type": "array",
       "items": {
        "type": "object"
       }
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-transit-london-real-time-arrivals-cdc6306f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)