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http_request

Executes an HTTP request and returns the response as a JSON string. Supports both named and positional parameters.

Limits​

LimitValue
Maximum response size1 MB
Maximum redirects20
Minimum timeout1 ms
Maximum timeout300,000 ms (5 minutes)
Supported protocolsHTTP, HTTPS only

Syntax​

-- Named parameters (recommended)
http_request(
    url => <url>,
    [method => <method>,]
    [body => <body>,]
    [headers => <headers>,]
    [timeout_ms => <timeout_ms>,]
    [ssl_verify => <ssl_verify>,]
    [username => <username>,]
    [password => <password>]
)

-- Positional parameters
http_request(<url>[, <method>[, <body>[, <headers>[, <timeout_ms>[, <ssl_verify>[, <username>[, <password>]]]]]]])

Parameters​

ParameterTypeRequiredDefaultDescription
urlVARCHARYes-Target URL. Must be HTTP or HTTPS.
methodVARCHARNo'GET'HTTP method: GET, POST, PUT, DELETE, HEAD, OPTIONS.
bodyVARCHARNo''Request body content.
headersVARCHARNo'{}'Custom HTTP headers as a JSON object string.
timeout_msINTNo30000Request timeout in milliseconds (1 ~ 300,000).
ssl_verifyBOOLEANNotrueEnable SSL certificate verification.
usernameVARCHARNo''HTTP Basic Authentication username.
passwordVARCHARNo''HTTP Basic Authentication password.

Return value​

Returns a VARCHAR containing a JSON object.

Success:

{"status": <http_code>, "body": <response_content>}

Error:

{"status": -1, "body": null, "error": "<error_message>"}

Examples​

Simple GET request​

SELECT http_request(url => 'https://httpbin.org/get');

Extract status code using json_query​

SELECT json_query(
    http_request(url => 'https://httpbin.org/get'),
    '$.status'
) AS status_code;

POST request with JSON body​

SELECT http_request(
    url => 'https://httpbin.org/post',
    method => 'POST',
    headers => '{"Content-Type": "application/json"}',
    body => '{"name": "StarRocks", "type": "database"}'
);

Custom headers​

SELECT http_request(
    url => 'https://api.example.com/data',
    headers => '{"Authorization": "Bearer token123", "Accept": "application/json"}'
);

HTTP Basic Authentication​

SELECT http_request(
    url => 'https://httpbin.org/basic-auth/user/passwd',
    username => 'user',
    password => 'passwd'
);

Custom timeout​

SELECT http_request(
    url => 'https://slow-api.example.com/data',
    timeout_ms => 60000
);

Named parameters in any order​

SELECT http_request(
    method => 'POST',
    timeout_ms => 5000,
    url => 'https://httpbin.org/post',
    body => '{"key": "value"}'
);

Positional parameters​

SELECT http_request('https://httpbin.org/post', 'POST', '{"key": "value"}');

Sending Slack webhook notification​

SELECT http_request(
    url => 'https://hooks.slack.com/services/YOUR/WEBHOOK/URL',
    method => 'POST',
    headers => '{"Content-Type": "application/json"}',
    body => '{"text": "Alert: Daily report generated from StarRocks!"}'
);

Parse nested JSON response​

SELECT json_query(
    json_query(
        http_request(url => 'https://jsonplaceholder.typicode.com/posts/1'),
        '$.body'
    ),
    '$.title'
) AS post_title;

Disable SSL verification​

SELECT http_request(
    url => 'https://self-signed.example.com/api',
    ssl_verify => false
);

Note: If http_request_ssl_verification_required is set to true by the administrator, this option will be ignored.

Security configuration​

This function includes built-in SSRF (Server-Side Request Forgery) protection with DNS rebinding prevention and redirect limits (max 20 hops).

Security levels​

LevelNameDescription
1TRUSTEDAllow all requests including private IPs.
2PUBLICBlock private IPs, allow all public hosts.
3RESTRICTEDRequire allowlist for all hosts. (Default)
4PARANOIDBlock all requests.

Configuration options​

ConfigTypeDefaultDescription
http_request_security_levelINT3Security level (1-4).
http_request_host_allowlist_regexpVARCHAR''Regex pattern for allowed hostnames.
http_request_ip_allowlistVARCHAR''Comma-separated allowed IPv4 addresses.
http_request_allow_private_in_allowlistBOOLEANfalseAllow private IPs if in allowlist.
http_request_ssl_verification_requiredBOOLEANtrueEnforce SSL verification (cannot be disabled by users).
ADMIN SET FRONTEND CONFIG ("http_request_security_level" = "3");
ADMIN SET FRONTEND CONFIG ("http_request_host_allowlist_regexp" = "api\\.example\\.com|.*\\.trusted\\.org");
ADMIN SET FRONTEND CONFIG ("http_request_ip_allowlist" = "203.0.113.1,198.51.100.0");

Allowlist behavior​

TargetLevel 2 (PUBLIC)Level 3 (RESTRICTED)
Public IP (not in allowlist)AllowedBlocked
Public IP (in allowlist)AllowedAllowed
Private IP (not in allowlist)BlockedBlocked
Private IP (in allowlist + allow_private=true)AllowedAllowed

Blocked IP ranges (levels 2-4)​

127.0.0.0/8, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 169.254.0.0/16, 0.0.0.0/8, IPv6 loopback (::1), link-local (fe80::/10), unique local (fc00::/7).

keyword​

HTTP, REQUEST, API, CALL