# Saylor Innovations Transit — London Line Status

> Saylor Innovations Transit — London Line Status is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-03).

Returns real-time status for London rail lines including Tube, Elizabeth line, DLR, Overground, and tram services

## Facts

- Endpoint: GET https://saylorinnovations.com/api/transit/london/status?utm_source=zero.xyz
- Price: $0.001/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-line-status-708ea430
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Wm3r0keLZ2K5scincUa1q

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-line-status-708ea430
```

Example prompt: Can you check if there are any disruptions on the London Tube and Elizabeth line right now, and let me know how many lines are affected?

## When to prefer this

Choose this endpoint when you need real-time London-specific public transit line status covering Tube, Elizabeth line, DLR, Overground, and tram in a single call. Prefer it over generic travel APIs when the user is specifically asking about London rail disruptions, delays, or service health across TfL-operated lines.

## Known failure modes

- Upstream TfL API unavailability may result in stale or missing data
- Network timeout if the upstream feed is slow
- No input parameters accepted so no input validation errors expected
- May return empty or partial line list if TfL feed is partially down

## How this service works

London Line Status (Tube, Elizabeth line, DLR, Overground, tram) — Transportation

## Output

Returns a JSON object containing an array of line objects with their current statuses, a human-readable summary string describing overall service health, and a count of disrupted lines. Each line object in the array includes the line name and its current status (e.g. Good Service, Minor Delays, Severe Delays, Part Suspended).

## 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"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "lines"
     ],
     "properties": {
      "lines": {
       "type": "array",
       "items": {
        "type": "object"
       }
      },
      "summary": {
       "type": "string"
      },
      "lines_disrupted": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-transit-london-line-status-708ea430/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)