# Match-Trader Platform API POST /mtr-api/{SYSTEM_UUID}/pending-order/edit

Independent and unofficial. Not affiliated with or endorsed by any broker or platform named here. Educational only: nothing here is advice, and nothing here recommends a broker or a trade.

This is the markdown version of https://openbrokerapi.com/platforms/match-trader/endpoints/post-pending-order-edit, written from the same records as that page.

Risk warning: CFDs and spread bets are complex instruments and come with a high risk of losing money rapidly due to leverage. You can lose money on these products, and each provider publishes its own loss figure under FCA rules. You should consider whether you understand how they work and whether you can afford to take the high risk of losing your money. Automated and API trading can amplify losses through bugs, connectivity failures and runaway orders.

Change a pending order: its price, volume, stop loss or take profit.

- Request: `POST /mtr-api/{SYSTEM_UUID}/pending-order/edit`
- Group: Order
- Status: verified. Source: [app.theneo.io](https://app.theneo.io/match-trade/platform-api/edit-pending-order), checked 2026-10-12.
- Official reference: https://app.theneo.io/match-trade/platform-api/edit-pending-order

Note: Read on 12 Oct 2026 in Match-Trade's Platform API reference, which the Match-Trade documentation site links to and which is published at app.theneo.io. This call sits in a section the page loads only when it is opened, so its content was read from the data the page itself requests for that section. The method, path, parameters and required marks are the reference's own. The reference gives one base address, a sandbox at https://mtr-demo-prod.match-trader.com, and none for a broker's own platform. The reference writes the address with the bare word SYSTEM_UUID where the trading system's identifier goes, and its text calls the value systemUUID. This record writes it as a path parameter. The reference marks the headers as required and gives the body fields without a mark, so it does not say whether id, instrument, orderSide, type and volume must be sent. The price field is named priceOrder here and price in the call that creates the order. The reference lists no reply fields for this call. No mock reply is recorded.

## Parameters

- `SYSTEM_UUID` (in path, type string, required): The identifier of the trading system the account is on. The reference does not say where to read it. The login reply carries a system object with a uuid under each trading account's offer.
- `Cookie` (in header, type string, required): Marked required, with the example value co-auth={token}. The login section says the token field of the login reply is passed as a cookie, and the Market Watch section describes this header as tradingAccountToken.token.
- `Content-Type` (in header, type string, required): Marked required. The example value is application/json.
- `id` (in body, type string, not marked by the vendor): The identifier of the order.
- `instrument` (in body, type string, not marked by the vendor): The symbol.
- `orderSide` (in body, type string, not marked by the vendor): BUY or SELL.
- `type` (in body, type string, not marked by the vendor): The order type. Example value LIMIT.
- `volume` (in body, type number, not marked by the vendor): The order's volume.
- `priceOrder` (in body, type number, required): The order's price. The reference says it cannot be null, which is why it is recorded as required.
- `slPrice` (in body, type number, required): Stop loss price. The reference says it cannot be null and that 0 is sent when none is wanted, which is why it is recorded as required.
- `tpPrice` (in body, type number, required): Take profit price. The reference says it cannot be null and that 0 is sent when none is wanted, which is why it is recorded as required.
- `isMobile` (in body, type boolean, not marked by the vendor): Example value false.

6 fields are tagged not marked by the vendor: id, instrument, orderSide, type, volume, isMobile. The vendor's page lists them and marks them neither required nor optional. That describes the page, not a test of what the host accepts, so the samples send them with a placeholder.

### Authentication headers

- `Auth-trading-api` (type string, required): The tradingApiToken of the trading account, from the login reply. Marked required. Placeholder only: never paste a real token into this site.

## Request

Written from the method, path and parameters recorded on this page. No demo host is recorded as a plain address for this API, so the samples read the base address from an environment variable. Not executed against a live or demo account. Credentials are read from environment variables on your own machine and are never entered on this site. The request builder at https://openbrokerapi.com/tools/request-builder writes these same snippets, from the same record.

This call takes a request body. The samples send it as JSON with a placeholder for each of the 3 body fields the record marks as required, and a placeholder for each of the 6 body fields the vendor's page marks neither required nor optional, named in the sample's own comment. Each placeholder has to be replaced with a real value before the request can succeed.

### Python

```python
# Set MATCH_TRADER_BASE_URL, MATCH_TRADER_TRADING_API_TOKEN, MATCH_TRADER_TOKEN as environment variables first. Never paste real values into code.
# MATCH_TRADER_TRADING_API_TOKEN and MATCH_TRADER_TOKEN hold the Auth-trading-api and Cookie headers that POST /manager/mtr-login returns.
# No demo host is recorded as a plain address for this API, so the base address is read from MATCH_TRADER_BASE_URL.
# Replace each {placeholder}, "..." and 0 with a real value before running.
# Not marked required or optional on the vendor's page, so sent here with a placeholder: id, instrument, orderSide, type, volume, isMobile. Leave out any the call does not need.
import os
import requests

BASE_URL = os.environ["MATCH_TRADER_BASE_URL"]
headers = {
    "Auth-trading-api": os.environ["MATCH_TRADER_TRADING_API_TOKEN"],
    "Cookie": "co-auth=" + os.environ["MATCH_TRADER_TOKEN"],
    "Content-Type": "application/json",
}
body = {"id": "...", "instrument": "...", "orderSide": "...", "type": "...", "volume": 0, "priceOrder": 0, "slPrice": 0, "tpPrice": 0, "isMobile": False}
resp = requests.post(BASE_URL + "/mtr-api/{SYSTEM_UUID}/pending-order/edit", headers=headers, json=body, timeout=10)
resp.raise_for_status()
print(resp.json())
```

### JavaScript

```javascript
// Set MATCH_TRADER_BASE_URL, MATCH_TRADER_TRADING_API_TOKEN, MATCH_TRADER_TOKEN as environment variables first. Never paste real values into code.
// MATCH_TRADER_TRADING_API_TOKEN and MATCH_TRADER_TOKEN hold the Auth-trading-api and Cookie headers that POST /manager/mtr-login returns.
// No demo host is recorded as a plain address for this API, so the base address is read from MATCH_TRADER_BASE_URL.
// Replace each {placeholder}, "..." and 0 with a real value before running.
// Not marked required or optional on the vendor's page, so sent here with a placeholder: id, instrument, orderSide, type, volume, isMobile. Leave out any the call does not need.
// Run as a module, for example a .mjs file, on a Node version that has fetch built in.
const BASE_URL = process.env.MATCH_TRADER_BASE_URL;
const res = await fetch(BASE_URL + "/mtr-api/{SYSTEM_UUID}/pending-order/edit", {
  method: "POST",
  headers: {
    "Auth-trading-api": process.env.MATCH_TRADER_TRADING_API_TOKEN,
    "Cookie": "co-auth=" + process.env.MATCH_TRADER_TOKEN,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"id": "...", "instrument": "...", "orderSide": "...", "type": "...", "volume": 0, "priceOrder": 0, "slPrice": 0, "tpPrice": 0, "isMobile": false}),
});
if (!res.ok) throw new Error(`HTTP ${res.status}`);
console.log(await res.json());
```

### curl

```bash
# Set MATCH_TRADER_BASE_URL, MATCH_TRADER_TRADING_API_TOKEN, MATCH_TRADER_TOKEN as environment variables first. Never paste real values into code.
# MATCH_TRADER_TRADING_API_TOKEN and MATCH_TRADER_TOKEN hold the Auth-trading-api and Cookie headers that POST /manager/mtr-login returns.
# No demo host is recorded as a plain address for this API, so the base address is read from MATCH_TRADER_BASE_URL.
# Replace each {placeholder}, "..." and 0 with a real value before running.
# Not marked required or optional on the vendor's page, so sent here with a placeholder: id, instrument, orderSide, type, volume, isMobile. Leave out any the call does not need.
curl -X POST "$MATCH_TRADER_BASE_URL/mtr-api/{SYSTEM_UUID}/pending-order/edit" \
  -H "Auth-trading-api: $MATCH_TRADER_TRADING_API_TOKEN" \
  -H "Cookie: co-auth=$MATCH_TRADER_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"id": "...", "instrument": "...", "orderSide": "...", "type": "...", "volume": 0, "priceOrder": 0, "slPrice": 0, "tpPrice": 0, "isMobile": false}'
```

## Response

No mock response is recorded for this endpoint. That is a statement about this record, not about what the API returns: read the shape of the reply in the [official reference](https://app.theneo.io/match-trade/platform-api/edit-pending-order).

## More on the Match-Trader API

- [All Match-Trader API endpoints](https://openbrokerapi.com/platforms/match-trader/endpoints): 17 documented, grouped by what they do.
- [All Match-Trader API error codes](https://openbrokerapi.com/errors/match-trader)
- [Match-Trader API page](https://openbrokerapi.com/platforms/match-trader): The full record: access, authentication, limits and the source for each.
- [Match-Trader API as an OpenAPI file](https://openbrokerapi.com/specs/match-trader.json): Generated from these endpoint records. Independent and unofficial.

## Licence and how to cite

The records behind this page are all rights reserved. This file is the page itself, at its own address, in another format. It is not part of the CC BY 4.0 downloads listed at https://openbrokerapi.com/data. Quote from it with a link to the page.

Cite as: Match-Trader Platform API POST /mtr-api/{SYSTEM_UUID}/pending-order/edit. Broker API Hub, https://openbrokerapi.com/platforms/match-trader/endpoints/post-pending-order-edit, newest check 2026-10-12.

Where you rely on a single figure, cite the source and the checked date printed beside it as well. Where this page and a broker's own documentation differ, the documentation wins.