[INFO] If you're on windows and use PHP installed by Scoop.

[shjordaniop]

Make sure, you changed the php.ini file and search for:
;extension_dir = "ext"
uncomment the line, mcp should now work for kilo code and similar derivatives of roo code.

I'll leave here my working php.ini for 8.4

php.ini

[PHP]

engine = On
short_open_tag = Off
precision = 14
output_buffering = 4096
zlib.output_compression = Off
implicit_flush = Off
unserialize_callback_func =
serialize_precision = -1
zend.enable_gc = On
zend.exception_ignore_args = Off
zend.exception_string_param_max_len = 15
expose_php = On

max_execution_time = 30
max_input_time = -1
memory_limit = 1280M

error_reporting = E_ALL
display_errors = On
display_startup_errors = On
log_errors = On
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On

disable_functions =
disable_classes =

default_mimetype = "text/html"
default_charset = "UTF-8"

variables_order = "GPCS"
request_order = "GP"
register_argc_argv = Off
auto_globals_jit = On

post_max_size = 800M

upload_max_filesize = 200M
max_file_uploads = 20

allow_url_fopen = On
default_socket_timeout = 60

extension_dir = "ext"
enable_dl = Off

extension=curl
extension=fileinfo
extension=gd
extension=intl
extension=ldap
extension=mbstring
extension=imagick
extension=sockets
extension=sqlite3
extension=xsl
extension=zip

zend_extension=opcache

[CLI Server]
cli_server.color = On

[Date]
date.timezone = America/Bahia

pdo_mysql.default_socket=

doc_root =
user_dir =

[mail function]
SMTP = localhost
smtp_port = 25
mail.add_x_header = Off
mail.mixed_lf_and_crlf = Off

[ODBC]
odbc.allow_persistent = On
odbc.check_persistent = On
odbc.max_persistent = -1
odbc.max_links = -1
odbc.defaultlrl = 4096
odbc.defaultbinmode = 1

[MySQLi]
mysqli.max_persistent = -1
mysqli.allow_persistent = On
mysqli.max_links = -1
mysqli.default_port = 3306
mysqli.default_socket =
mysqli.default_host =
mysqli.default_user =
mysqli.default_pw =

[mysqlnd]
mysqlnd.collect_statistics = On
mysqlnd.collect_memory_statistics = On
mysqlnd.mempool_default_size = 16000
mysqlnd.net_cmd_buffer_size = 2048
mysqlnd.net_read_buffer_size = 32768
mysqlnd.net_read_timeout = 31536000

[PostgreSQL]
pgsql.allow_persistent = On
pgsql.auto_reset_persistent = Off
pgsql.max_persistent = -1
pgsql.max_links = -1
pgsql.ignore_notice = 0
pgsql.log_notice = 0

[bcmath]
bcmath.scale = 0

[Session]
session.save_handler = files
session.use_strict_mode = 0
session.use_cookies = 1
session.use_only_cookies = 1
session.name = PHPSESSID
session.auto_start = 0
session.cookie_lifetime = 0
session.cookie_path = /
session.cookie_domain =
session.cookie_httponly =
session.cookie_samesite =
session.serialize_handler = php
session.gc_probability = 1
session.gc_divisor = 1000
session.gc_maxlifetime = 1440
session.referer_check =
session.cache_limiter = nocache
session.cache_expire = 180
session.use_trans_sid = 0
session.trans_sid_tags = "a=href,area=href,frame=src,form="

[Assertion]
zend.assertions = 1

[gd]
tidy.clean_output = Off

[soap]
soap.wsdl_cache_enabled=1
soap.wsdl_cache_dir="/tmp"
soap.wsdl_cache_ttl=86400
soap.wsdl_cache_limit = 5

[ldap]
ldap.max_links = -1

[opcache]
opcache.enable=1
opcache.enable_cli=1
opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=10000

[curl]
curl.cainfo = "C:\Users\REDACTED\scoop\apps\php84\current\cacert.pem"

[openssl]
openssl.cafile= "C:\Users\REDACTED\scoop\apps\php84\current\cacert.pem"

[ffi]
ffi.enable=preload

[xdebug]
zend_extension=xdebug
xdebug.mode=coverage
xdebug.start_with_request=yes