👾Code Agents with FPT Serverless Inference (Cloud API)

This explains how to connect popular code agents to Serverless Inference through the FPT AI Marketplace. Use it to configure endpoints, API keys, an internal proxy, and the right model for each tool. See Task recommendation by roles to select an LLM for each task.

Use code agents effectively

Give AI models clear instructions to prevent endless agent loops and incorrect implementation paths. This prevents endless agent loops and incorrect implementation paths.

Instruction principles — use English where possible:

Use AGENTS.md — place it at the repository root. Agents read its context, working principles, and common commands at session start. OpenCode, Cline, and Roocode support this automatically. This instruction includes an AGENTS.md file.
- AGENTS.md → for OpenCode (Sisyphus)
- CLAUDE.md → for Claude CLI (claude)
Keep prompts short, specific, and example-driven — instead of "fix the auth", write: "In auth.py:45, replace token = req.headers.get('token') with token = req.headers.get('Authorization', '').removeprefix('Bearer ')"
Control code loops — when an agent repeats work without progress, use: "Stop. Summarize what you've tried and what's blocking you." You can also add a stopping condition: "If you can't fix it in 3 attempts, stop and explain."
Break tasks into smaller steps — "Only do step 1: write the function. Don't run or test yet." Always ask the agent to plan first, then execute: "List the steps you'll take. Don't execute yet."

API Endpoint: https://mkp-api.fptcloud.com/v1 Company proxy: http://10.36.232.10:8080

1. OpenCode

Installation

# Request administrator access at: https://uservice.fci.vn/secure/SSC01CreateTicket.jspa?processId=147&catalogId=2&issueKeys=
# Select the Whitelist option.

# Install Node.js LTS.
winget install OpenJS.NodeJS.LTS --accept-package-agreements --accept-source-agreements

# Install OpenCode with npm, Scoop, or Chocolatey.
npm install -g opencode-ai
# Or run: scoop install opencode  /  choco install opencode

API configuration

File: %USERPROFILE%\.config\opencode\opencode.jsonc

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "fpt": {
      "name": "fpt",
      "npm": "@ai-sdk/openai-compatible",
      "models": {
        "Qwen3.6-27B": { "name": "Qwen3.6-27B" }
      },
      "options": {
        "baseURL": "https://mkp-api.fptcloud.com/v1",
        "headers": {
          "Authorization": "Bearer <API_KEY>"
        }
      }
    }
  }
}

Run on Windows

$env:HTTPS_PROXY = "http://10.36.232.10:8080"
$env:HTTP_PROXY  = "http://10.36.232.10:8080"
$env:NO_PROXY    = "localhost,127.0.0.1"

opencode

Ubuntu

Installation:

# Request administrator access at: https://uservice.fci.vn/secure/SSC01CreateTicket.jspa?processId=147&catalogId=2&issueKeys=
# Select the Whitelist option.

# Install Node.js LTS, required by OpenCode.
curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash -
sudo apt-get install -y nodejs

# Install OpenCode with the official installer.
export https_proxy="http://10.36.232.10:8080"
export http_proxy="http://10.36.232.10:8080"
export no_proxy="localhost,127.0.0.1"

curl -fsSL https://opencode.ai/install | bash

Or use npm:

npm install -g opencode-ai

API configuration:

Create the OpenCode directory if needed: mkdir $HOME/.config/opencode

Create opencode.jsonc: touch $HOME/.config/opencode/opencode.jsonc

Create an API key for Qwen 3.6-27B in the AI Marketplace: https://marketplace.fptcloud.com/

Update $HOME/.config/opencode/opencode.jsonc:

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "fpt": {
      "name": "fpt",
      "npm": "@ai-sdk/openai-compatible",
      "models": {
        "Qwen3.6-27B": { "name": "Qwen3.6-27B" }
      },
      "options": {
        "baseURL": "https://mkp-api.fptcloud.com/v1",
        "headers": {
          "Authorization": "Bearer <API_KEY>"
        }
      }
    }
  }
}

Run:

export HTTPS_PROXY="http://10.36.232.10:8080"
export HTTP_PROXY="http://10.36.232.10:8080"
export NO_PROXY="localhost,127.0.0.1"

opencode

Optional

For an improved experience, install the oh-my-openagent plugin.

2. Cline (VS Code extension)

Install the Cline extension in VS Code.
Open Cline Settings → select API Provider: OpenAI Compatible.
Enter:

Field

Value

Base URL

https://mkp-api.fptcloud.com/v1

API Key

<API_KEY>

Model

Qwen3.6-27B

Configure the proxy in VS Code settings (settings.json):

"http.proxy": "http://10.36.232.10:8080"

3. Roocode (VS Code extension)

See the OpenAI-compatible provider connection guide.

Enter:

Base URL: https://mkp-api.fptcloud.com/v1
API Key: <API_KEY>
Model: Qwen3.6-27B

4. Claude CLI with FPT AI Marketplace

Claude CLI sends API keys in the Anthropic-style x-api-key header. FPT AI Marketplace requires Authorization: Bearer. The following configuration overrides environment variables for marketplace compatibility. It also uses a separate configuration directory to avoid conflicts with a claude.ai account.

Note: The following configuration uses the MODAS Vietnam site only

Currently, use the fixed stable Claude Code version 2.1.150. Disable automatic updates in settings.json:

{ "theme": "dark", "model": "opus", "env": { "DISABLE_AUTOUPDATER": "1" } }

Configuration — add to your PowerShell profile

Open your profile:

notepad $PROFILE

Add this to the end of the file:

$env:MKP_API_BASE = "https://mkp-api.fptcloud.com"
$env:MKP_API_KEY  = "sk-..."

function claude-mkp {
    $model = if ($env:CLAUDE_MKP_MODEL) { $env:CLAUDE_MKP_MODEL } else { "Qwen3.6-27B" }

    $savedApiKey = $env:ANTHROPIC_API_KEY
    $savedOAuth  = $env:CLAUDE_CODE_OAUTH_TOKEN
    Remove-Item Env:ANTHROPIC_API_KEY        -ErrorAction SilentlyContinue
    Remove-Item Env:CLAUDE_CODE_OAUTH_TOKEN  -ErrorAction SilentlyContinue

    $env:CLAUDE_CONFIG_DIR              = "$env:USERPROFILE\.claude-mkp"
    $env:ANTHROPIC_BASE_URL             = $env:MKP_API_BASE
    $env:ANTHROPIC_AUTH_TOKEN           = $env:MKP_API_KEY
    $env:ANTHROPIC_MODEL                = $model
    $env:ANTHROPIC_SMALL_FAST_MODEL     = $model
    $env:ANTHROPIC_DEFAULT_SONNET_MODEL = $model
    $env:ANTHROPIC_DEFAULT_OPUS_MODEL   = $model
    $env:ANTHROPIC_DEFAULT_HAIKU_MODEL  = $model
    $env:HTTPS_PROXY                    = "http://10.36.232.10:8080"
    $env:HTTP_PROXY                     = "http://10.36.232.10:8080"
    $env:NO_PROXY                       = "localhost,127.0.0.1"

    try {
        claude @args
    } finally {
        if ($savedApiKey) { $env:ANTHROPIC_API_KEY = $savedApiKey }
        else { Remove-Item Env:ANTHROPIC_API_KEY -ErrorAction SilentlyContinue }
        if ($savedOAuth)  { $env:CLAUDE_CODE_OAUTH_TOKEN = $savedOAuth }
        else { Remove-Item Env:CLAUDE_CODE_OAUTH_TOKEN -ErrorAction SilentlyContinue }
        @("CLAUDE_CONFIG_DIR","ANTHROPIC_BASE_URL","ANTHROPIC_AUTH_TOKEN",
          "ANTHROPIC_MODEL","ANTHROPIC_SMALL_FAST_MODEL","ANTHROPIC_DEFAULT_SONNET_MODEL",
          "ANTHROPIC_DEFAULT_OPUS_MODEL","ANTHROPIC_DEFAULT_HAIKU_MODEL",
          "HTTPS_PROXY","HTTP_PROXY","NO_PROXY") | ForEach-Object {
            Remove-Item "Env:$_" -ErrorAction SilentlyContinue
        }
    }
}

function ccdm { claude-mkp --dangerously-skip-permissions @args }

Commands

Command

Description

claude-mkp

Runs Claude CLI through MKP

claude-mkp <args>

Passes additional arguments as usual

ccdm

Runs with --dangerously-skip-permissions

Temporarily change the model:

$env:CLAUDE_MKP_MODEL = "other-model"; claude-mkp

Ubuntu

Add this to ~/.bashrc or ~/.zshrc:

export MKP_API_BASE="https://mkp-api.fptcloud.com"
export MKP_API_KEY="sk-..."

claude-mkp() {
    local model="${CLAUDE_MKP_MODEL:-Qwen3.6-27B}"

    local saved_api_key="$ANTHROPIC_API_KEY"
    local saved_oauth="$CLAUDE_CODE_OAUTH_TOKEN"
    unset ANTHROPIC_API_KEY
    unset CLAUDE_CODE_OAUTH_TOKEN

    export CLAUDE_CONFIG_DIR="$HOME/.claude-mkp"
    export ANTHROPIC_BASE_URL="$MKP_API_BASE"
    export ANTHROPIC_AUTH_TOKEN="$MKP_API_KEY"
    export ANTHROPIC_MODEL="$model"
    export ANTHROPIC_SMALL_FAST_MODEL="$model"
    export ANTHROPIC_DEFAULT_SONNET_MODEL="$model"
    export ANTHROPIC_DEFAULT_OPUS_MODEL="$model"
    export ANTHROPIC_DEFAULT_HAIKU_MODEL="$model"
    export HTTPS_PROXY="http://10.36.232.10:8080"
    export HTTP_PROXY="http://10.36.232.10:8080"
    export NO_PROXY="localhost,127.0.0.1"

    claude "$@"
    local exit_code=$?

    if [ -n "$saved_api_key" ]; then
        export ANTHROPIC_API_KEY="$saved_api_key"
    else
        unset ANTHROPIC_API_KEY
    fi
    if [ -n "$saved_oauth" ]; then
        export CLAUDE_CODE_OAUTH_TOKEN="$saved_oauth"
    else
        unset CLAUDE_CODE_OAUTH_TOKEN
    fi
    unset CLAUDE_CONFIG_DIR ANTHROPIC_BASE_URL ANTHROPIC_AUTH_TOKEN \
          ANTHROPIC_MODEL ANTHROPIC_SMALL_FAST_MODEL ANTHROPIC_DEFAULT_SONNET_MODEL \
          ANTHROPIC_DEFAULT_OPUS_MODEL ANTHROPIC_DEFAULT_HAIKU_MODEL \
          HTTPS_PROXY HTTP_PROXY NO_PROXY

    return $exit_code
}

ccdm() { claude-mkp --dangerously-skip-permissions "$@"; }

Temporarily change the model:

CLAUDE_MKP_MODEL="other-model" claude-mkp

Why use `ANTHROPIC_AUTH_TOKEN` instead of `ANTHROPIC_API_KEY`?

Sent header

Variable

Accepted by MKP?

x-api-key: sk-...

ANTHROPIC_API_KEY

No → 401

Authorization: Bearer sk-...

ANTHROPIC_AUTH_TOKEN

Yes → 200 OK

Test the connection

curl.exe -sS -X POST "$env:MKP_API_BASE/v1/messages" `
  -H "Authorization: Bearer $env:MKP_API_KEY" `
  -H "anthropic-version: 2023-06-01" `
  -H "Content-Type: application/json" `
  -d '{"model":"Qwen3.6-27B","max_tokens":20,"messages":[{"role":"user","content":"hi"}]}'

Troubleshooting

Symptom

Cause and resolution

Auth conflict warning

Ensure CLAUDE_CONFIG_DIR is set inside the function, not globally.

Retrying in Xs · attempt N/10

MKP rejected authentication. Use ANTHROPIC_AUTH_TOKEN, not ANTHROPIC_API_KEY.

401 "Missing API Key"

The header is incorrect. Use Authorization: Bearer, not x-api-key.

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Use code agents effectively

1. OpenCode

Installation

API configuration

Run on Windows

Ubuntu

Optional

2. Cline (VS Code extension)

3. Roocode (VS Code extension)

4. Claude CLI with FPT AI Marketplace

Configuration — add to your PowerShell profile

Commands

Ubuntu

Why use ANTHROPIC_AUTH_TOKEN instead of ANTHROPIC_API_KEY?

Test the connection

Troubleshooting

Why use `ANTHROPIC_AUTH_TOKEN` instead of `ANTHROPIC_API_KEY`?