What is MCP Retrieval?

Local Go MCP server: DuckDuckGo/Bing web + image search, readability scraping to Markdown.

How do I install MCP Retrieval?

Pick a client above and copy the generated config. Cursor and VS Code also have a deep link when the server can run locally or remotely.

Is MCP Retrieval official?

No. Registry-listed is not the same as vendor-official. Read the methodology for the difference.

How is the trust score calculated?

This listing scores 13 (Limited). The formula is published on the methodology page.

MCP Retrieval MCP Server

Loading the directory

Environment

Name	Required	Notes
MCP_TRANSPORT	No	stdio (client spawns the process) or http (streamable HTTP listener).
MCP_NAME	No	Server name reported in the MCP initialize handshake.
MCP_PATH	No	HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.
SERVER_PORT	No	TCP port to listen on. Used only when MCP_TRANSPORT=http.
SERVER_READ_TIMEOUT	No	HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.
SERVER_WRITE_TIMEOUT	No	HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.
LOG_MODE	No	local (text, debug) or prod (JSON, info). Logs go to stderr.
MAX_IDLE_CONNS_PER_HOST	No	Idle connections the outbound HTTP client keeps per host.
MAX_QUERIES	No	Maximum queries or URLs accepted in one call.
DEFAULT_RESULTS	No	Snippets returned per query when the call does not ask for a count.
MAX_RESULTS	No	Upper bound for snippets per query.
DEFAULT_IMAGES	No	Images returned per query when the call does not ask for a count.
MAX_IMAGES	No	Upper bound for images per query.
DEFAULT_TIMEOUT_MS	No	Per-call timeout in milliseconds when the call does not request one.
MIN_TIMEOUT_MS	No	Lowest timeout a call may request, in milliseconds.
MAX_TIMEOUT_MS	No	Highest timeout a call may request, in milliseconds.
DEFAULT_DOCUMENT_CHARS	No	Characters kept per scraped page when the call does not ask for a limit.
MAX_DOCUMENT_CHARS	No	Upper bound for characters kept per scraped page.
PROXY_SCHEME	No	Outbound proxy scheme. Optional; set all five PROXY_* variables or none.
PROXY_HOST	No	Outbound proxy host. Enables per-request rotating proxy sessions.
PROXY_PORT	No	Outbound proxy port. Required when PROXY_HOST is set.
PROXY_LOGIN	No	Outbound proxy username. Required when PROXY_HOST is set. Secret.
PROXY_PASSWORD	No	Outbound proxy password. Required when PROXY_HOST is set. Secret.
MCP_TRANSPORT	No	stdio (client spawns the process) or http (streamable HTTP listener).
MCP_NAME	No	Server name reported in the MCP initialize handshake.
MCP_PATH	No	HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.
SERVER_PORT	No	TCP port to listen on. Used only when MCP_TRANSPORT=http.
SERVER_READ_TIMEOUT	No	HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.
SERVER_WRITE_TIMEOUT	No	HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.
LOG_MODE	No	local (text, debug) or prod (JSON, info). Logs go to stderr.
MAX_IDLE_CONNS_PER_HOST	No	Idle connections the outbound HTTP client keeps per host.
MAX_QUERIES	No	Maximum queries or URLs accepted in one call.
DEFAULT_RESULTS	No	Snippets returned per query when the call does not ask for a count.
MAX_RESULTS	No	Upper bound for snippets per query.
DEFAULT_IMAGES	No	Images returned per query when the call does not ask for a count.
MAX_IMAGES	No	Upper bound for images per query.
DEFAULT_TIMEOUT_MS	No	Per-call timeout in milliseconds when the call does not request one.
MIN_TIMEOUT_MS	No	Lowest timeout a call may request, in milliseconds.
MAX_TIMEOUT_MS	No	Highest timeout a call may request, in milliseconds.
DEFAULT_DOCUMENT_CHARS	No	Characters kept per scraped page when the call does not ask for a limit.
MAX_DOCUMENT_CHARS	No	Upper bound for characters kept per scraped page.
PROXY_SCHEME	No	Outbound proxy scheme. Optional; set all five PROXY_* variables or none.
PROXY_HOST	No	Outbound proxy host. Enables per-request rotating proxy sessions.
PROXY_PORT	No	Outbound proxy port. Required when PROXY_HOST is set.
PROXY_LOGIN	No	Outbound proxy username. Required when PROXY_HOST is set. Secret.
PROXY_PASSWORD	No	Outbound proxy password. Required when PROXY_HOST is set. Secret.
MCP_TRANSPORT	No	stdio (client spawns the process) or http (streamable HTTP listener).
MCP_NAME	No	Server name reported in the MCP initialize handshake.
MCP_PATH	No	HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.
SERVER_PORT	No	TCP port to listen on. Used only when MCP_TRANSPORT=http.
SERVER_READ_TIMEOUT	No	HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.
SERVER_WRITE_TIMEOUT	No	HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.
LOG_MODE	No	local (text, debug) or prod (JSON, info). Logs go to stderr.
MAX_IDLE_CONNS_PER_HOST	No	Idle connections the outbound HTTP client keeps per host.
MAX_QUERIES	No	Maximum queries or URLs accepted in one call.
DEFAULT_RESULTS	No	Snippets returned per query when the call does not ask for a count.
MAX_RESULTS	No	Upper bound for snippets per query.
DEFAULT_IMAGES	No	Images returned per query when the call does not ask for a count.
MAX_IMAGES	No	Upper bound for images per query.
DEFAULT_TIMEOUT_MS	No	Per-call timeout in milliseconds when the call does not request one.
MIN_TIMEOUT_MS	No	Lowest timeout a call may request, in milliseconds.
MAX_TIMEOUT_MS	No	Highest timeout a call may request, in milliseconds.
DEFAULT_DOCUMENT_CHARS	No	Characters kept per scraped page when the call does not ask for a limit.
MAX_DOCUMENT_CHARS	No	Upper bound for characters kept per scraped page.
PROXY_SCHEME	No	Outbound proxy scheme. Optional; set all five PROXY_* variables or none.
PROXY_HOST	No	Outbound proxy host. Enables per-request rotating proxy sessions.
PROXY_PORT	No	Outbound proxy port. Required when PROXY_HOST is set.
PROXY_LOGIN	No	Outbound proxy username. Required when PROXY_HOST is set. Secret.
PROXY_PASSWORD	No	Outbound proxy password. Required when PROXY_HOST is set. Secret.
MCP_TRANSPORT	No	stdio (client spawns the process) or http (streamable HTTP listener).
MCP_NAME	No	Server name reported in the MCP initialize handshake.
MCP_PATH	No	HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.
SERVER_PORT	No	TCP port to listen on. Used only when MCP_TRANSPORT=http.
SERVER_READ_TIMEOUT	No	HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.
SERVER_WRITE_TIMEOUT	No	HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.
LOG_MODE	No	local (text, debug) or prod (JSON, info). Logs go to stderr.
MAX_IDLE_CONNS_PER_HOST	No	Idle connections the outbound HTTP client keeps per host.
MAX_QUERIES	No	Maximum queries or URLs accepted in one call.
DEFAULT_RESULTS	No	Snippets returned per query when the call does not ask for a count.
MAX_RESULTS	No	Upper bound for snippets per query.
DEFAULT_IMAGES	No	Images returned per query when the call does not ask for a count.
MAX_IMAGES	No	Upper bound for images per query.
DEFAULT_TIMEOUT_MS	No	Per-call timeout in milliseconds when the call does not request one.
MIN_TIMEOUT_MS	No	Lowest timeout a call may request, in milliseconds.
MAX_TIMEOUT_MS	No	Highest timeout a call may request, in milliseconds.
DEFAULT_DOCUMENT_CHARS	No	Characters kept per scraped page when the call does not ask for a limit.
MAX_DOCUMENT_CHARS	No	Upper bound for characters kept per scraped page.
PROXY_SCHEME	No	Outbound proxy scheme. Optional; set all five PROXY_* variables or none.
PROXY_HOST	No	Outbound proxy host. Enables per-request rotating proxy sessions.
PROXY_PORT	No	Outbound proxy port. Required when PROXY_HOST is set.
PROXY_LOGIN	No	Outbound proxy username. Required when PROXY_HOST is set. Secret.
PROXY_PASSWORD	No	Outbound proxy password. Required when PROXY_HOST is set. Secret.
MCP_TRANSPORT	No	stdio (client spawns the process) or http (streamable HTTP listener).
MCP_NAME	No	Server name reported in the MCP initialize handshake.
MCP_PATH	No	HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.
SERVER_PORT	No	TCP port to listen on. Used only when MCP_TRANSPORT=http.
SERVER_READ_TIMEOUT	No	HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.
SERVER_WRITE_TIMEOUT	No	HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.
LOG_MODE	No	local (text, debug) or prod (JSON, info). Logs go to stderr.
MAX_IDLE_CONNS_PER_HOST	No	Idle connections the outbound HTTP client keeps per host.
MAX_QUERIES	No	Maximum queries or URLs accepted in one call.
DEFAULT_RESULTS	No	Snippets returned per query when the call does not ask for a count.
MAX_RESULTS	No	Upper bound for snippets per query.
DEFAULT_IMAGES	No	Images returned per query when the call does not ask for a count.
MAX_IMAGES	No	Upper bound for images per query.
DEFAULT_TIMEOUT_MS	No	Per-call timeout in milliseconds when the call does not request one.
MIN_TIMEOUT_MS	No	Lowest timeout a call may request, in milliseconds.
MAX_TIMEOUT_MS	No	Highest timeout a call may request, in milliseconds.
DEFAULT_DOCUMENT_CHARS	No	Characters kept per scraped page when the call does not ask for a limit.
MAX_DOCUMENT_CHARS	No	Upper bound for characters kept per scraped page.
PROXY_SCHEME	No	Outbound proxy scheme. Optional; set all five PROXY_* variables or none.
PROXY_HOST	No	Outbound proxy host. Enables per-request rotating proxy sessions.
PROXY_PORT	No	Outbound proxy port. Required when PROXY_HOST is set.
PROXY_LOGIN	No	Outbound proxy username. Required when PROXY_HOST is set. Secret.
PROXY_PASSWORD	No	Outbound proxy password. Required when PROXY_HOST is set. Secret.
MCP_TRANSPORT	No	stdio (client spawns the process) or http (streamable HTTP listener).
MCP_NAME	No	Server name reported in the MCP initialize handshake.
MCP_PATH	No	HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.
SERVER_PORT	No	TCP port to listen on. Used only when MCP_TRANSPORT=http.
SERVER_READ_TIMEOUT	No	HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.
SERVER_WRITE_TIMEOUT	No	HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.
LOG_MODE	No	local (text, debug) or prod (JSON, info). Logs go to stderr.
MAX_IDLE_CONNS_PER_HOST	No	Idle connections the outbound HTTP client keeps per host.
MAX_QUERIES	No	Maximum queries or URLs accepted in one call.
DEFAULT_RESULTS	No	Snippets returned per query when the call does not ask for a count.
MAX_RESULTS	No	Upper bound for snippets per query.
DEFAULT_IMAGES	No	Images returned per query when the call does not ask for a count.
MAX_IMAGES	No	Upper bound for images per query.
DEFAULT_TIMEOUT_MS	No	Per-call timeout in milliseconds when the call does not request one.
MIN_TIMEOUT_MS	No	Lowest timeout a call may request, in milliseconds.
MAX_TIMEOUT_MS	No	Highest timeout a call may request, in milliseconds.
DEFAULT_DOCUMENT_CHARS	No	Characters kept per scraped page when the call does not ask for a limit.
MAX_DOCUMENT_CHARS	No	Upper bound for characters kept per scraped page.
PROXY_SCHEME	No	Outbound proxy scheme. Optional; set all five PROXY_* variables or none.
PROXY_HOST	No	Outbound proxy host. Enables per-request rotating proxy sessions.
PROXY_PORT	No	Outbound proxy port. Required when PROXY_HOST is set.
PROXY_LOGIN	No	Outbound proxy username. Required when PROXY_HOST is set. Secret.
PROXY_PASSWORD	No	Outbound proxy password. Required when PROXY_HOST is set. Secret.
MCP_TRANSPORT	No	stdio (client spawns the process) or http (streamable HTTP listener).
MCP_NAME	No	Server name reported in the MCP initialize handshake.
MCP_PATH	No	HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.
SERVER_PORT	No	TCP port to listen on. Used only when MCP_TRANSPORT=http.
SERVER_READ_TIMEOUT	No	HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.
SERVER_WRITE_TIMEOUT	No	HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.
LOG_MODE	No	local (text, debug) or prod (JSON, info). Logs go to stderr.
MAX_IDLE_CONNS_PER_HOST	No	Idle connections the outbound HTTP client keeps per host.
MAX_QUERIES	No	Maximum queries or URLs accepted in one call.
DEFAULT_RESULTS	No	Snippets returned per query when the call does not ask for a count.
MAX_RESULTS	No	Upper bound for snippets per query.
DEFAULT_IMAGES	No	Images returned per query when the call does not ask for a count.
MAX_IMAGES	No	Upper bound for images per query.
DEFAULT_TIMEOUT_MS	No	Per-call timeout in milliseconds when the call does not request one.
MIN_TIMEOUT_MS	No	Lowest timeout a call may request, in milliseconds.
MAX_TIMEOUT_MS	No	Highest timeout a call may request, in milliseconds.
DEFAULT_DOCUMENT_CHARS	No	Characters kept per scraped page when the call does not ask for a limit.
MAX_DOCUMENT_CHARS	No	Upper bound for characters kept per scraped page.
PROXY_SCHEME	No	Outbound proxy scheme. Optional; set all five PROXY_* variables or none.
PROXY_HOST	No	Outbound proxy host. Enables per-request rotating proxy sessions.
PROXY_PORT	No	Outbound proxy port. Required when PROXY_HOST is set.
PROXY_LOGIN	No	Outbound proxy username. Required when PROXY_HOST is set. Secret.
PROXY_PASSWORD	No	Outbound proxy password. Required when PROXY_HOST is set. Secret.

Name

Required

Notes

MCP_TRANSPORT

stdio (client spawns the process) or http (streamable HTTP listener).

MCP_NAME

Server name reported in the MCP initialize handshake.

MCP_PATH

HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.

SERVER_PORT

TCP port to listen on. Used only when MCP_TRANSPORT=http.

SERVER_READ_TIMEOUT

HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.

SERVER_WRITE_TIMEOUT

HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.

LOG_MODE

local (text, debug) or prod (JSON, info). Logs go to stderr.

MAX_IDLE_CONNS_PER_HOST

Idle connections the outbound HTTP client keeps per host.

MAX_QUERIES

Maximum queries or URLs accepted in one call.

DEFAULT_RESULTS

Snippets returned per query when the call does not ask for a count.

MAX_RESULTS

Upper bound for snippets per query.

DEFAULT_IMAGES

Images returned per query when the call does not ask for a count.

MAX_IMAGES

Upper bound for images per query.

DEFAULT_TIMEOUT_MS

Per-call timeout in milliseconds when the call does not request one.

MIN_TIMEOUT_MS

Lowest timeout a call may request, in milliseconds.

MAX_TIMEOUT_MS

Highest timeout a call may request, in milliseconds.

DEFAULT_DOCUMENT_CHARS

Characters kept per scraped page when the call does not ask for a limit.

MAX_DOCUMENT_CHARS

Upper bound for characters kept per scraped page.

PROXY_SCHEME

Outbound proxy scheme. Optional; set all five PROXY_* variables or none.

PROXY_HOST

Outbound proxy host. Enables per-request rotating proxy sessions.

PROXY_PORT

Outbound proxy port. Required when PROXY_HOST is set.

PROXY_LOGIN

Outbound proxy username. Required when PROXY_HOST is set. Secret.

PROXY_PASSWORD

Outbound proxy password. Required when PROXY_HOST is set. Secret.

MCP_TRANSPORT

stdio (client spawns the process) or http (streamable HTTP listener).

MCP_NAME

Server name reported in the MCP initialize handshake.

MCP_PATH

HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.

SERVER_PORT

TCP port to listen on. Used only when MCP_TRANSPORT=http.

SERVER_READ_TIMEOUT

HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.

SERVER_WRITE_TIMEOUT

HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.

LOG_MODE

local (text, debug) or prod (JSON, info). Logs go to stderr.

MAX_IDLE_CONNS_PER_HOST

Idle connections the outbound HTTP client keeps per host.

MAX_QUERIES

Maximum queries or URLs accepted in one call.

DEFAULT_RESULTS

Snippets returned per query when the call does not ask for a count.

MAX_RESULTS

Upper bound for snippets per query.

DEFAULT_IMAGES

Images returned per query when the call does not ask for a count.

MAX_IMAGES

Upper bound for images per query.

DEFAULT_TIMEOUT_MS

Per-call timeout in milliseconds when the call does not request one.

MIN_TIMEOUT_MS

Lowest timeout a call may request, in milliseconds.

MAX_TIMEOUT_MS

Highest timeout a call may request, in milliseconds.

DEFAULT_DOCUMENT_CHARS

Characters kept per scraped page when the call does not ask for a limit.

MAX_DOCUMENT_CHARS

Upper bound for characters kept per scraped page.

PROXY_SCHEME

Outbound proxy scheme. Optional; set all five PROXY_* variables or none.

PROXY_HOST

Outbound proxy host. Enables per-request rotating proxy sessions.

PROXY_PORT

Outbound proxy port. Required when PROXY_HOST is set.

PROXY_LOGIN

Outbound proxy username. Required when PROXY_HOST is set. Secret.

PROXY_PASSWORD

Outbound proxy password. Required when PROXY_HOST is set. Secret.

MCP_TRANSPORT

stdio (client spawns the process) or http (streamable HTTP listener).

MCP_NAME

Server name reported in the MCP initialize handshake.

MCP_PATH

HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.

SERVER_PORT

TCP port to listen on. Used only when MCP_TRANSPORT=http.

SERVER_READ_TIMEOUT

HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.

SERVER_WRITE_TIMEOUT

HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.

LOG_MODE

local (text, debug) or prod (JSON, info). Logs go to stderr.

MAX_IDLE_CONNS_PER_HOST

Idle connections the outbound HTTP client keeps per host.

MAX_QUERIES

Maximum queries or URLs accepted in one call.

DEFAULT_RESULTS

Snippets returned per query when the call does not ask for a count.

MAX_RESULTS

Upper bound for snippets per query.

DEFAULT_IMAGES

Images returned per query when the call does not ask for a count.

MAX_IMAGES

Upper bound for images per query.

DEFAULT_TIMEOUT_MS

Per-call timeout in milliseconds when the call does not request one.

MIN_TIMEOUT_MS

Lowest timeout a call may request, in milliseconds.

MAX_TIMEOUT_MS

Highest timeout a call may request, in milliseconds.

DEFAULT_DOCUMENT_CHARS

Characters kept per scraped page when the call does not ask for a limit.

MAX_DOCUMENT_CHARS

Upper bound for characters kept per scraped page.

PROXY_SCHEME

Outbound proxy scheme. Optional; set all five PROXY_* variables or none.

PROXY_HOST

Outbound proxy host. Enables per-request rotating proxy sessions.

PROXY_PORT

Outbound proxy port. Required when PROXY_HOST is set.

PROXY_LOGIN

Outbound proxy username. Required when PROXY_HOST is set. Secret.

PROXY_PASSWORD

Outbound proxy password. Required when PROXY_HOST is set. Secret.

MCP_TRANSPORT

stdio (client spawns the process) or http (streamable HTTP listener).

MCP_NAME

Server name reported in the MCP initialize handshake.

MCP_PATH

HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.

SERVER_PORT

TCP port to listen on. Used only when MCP_TRANSPORT=http.

SERVER_READ_TIMEOUT

HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.

SERVER_WRITE_TIMEOUT

HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.

LOG_MODE

local (text, debug) or prod (JSON, info). Logs go to stderr.

MAX_IDLE_CONNS_PER_HOST

Idle connections the outbound HTTP client keeps per host.

MAX_QUERIES

Maximum queries or URLs accepted in one call.

DEFAULT_RESULTS

Snippets returned per query when the call does not ask for a count.

MAX_RESULTS

Upper bound for snippets per query.

DEFAULT_IMAGES

Images returned per query when the call does not ask for a count.

MAX_IMAGES

Upper bound for images per query.

DEFAULT_TIMEOUT_MS

Per-call timeout in milliseconds when the call does not request one.

MIN_TIMEOUT_MS

Lowest timeout a call may request, in milliseconds.

MAX_TIMEOUT_MS

Highest timeout a call may request, in milliseconds.

DEFAULT_DOCUMENT_CHARS

Characters kept per scraped page when the call does not ask for a limit.

MAX_DOCUMENT_CHARS

Upper bound for characters kept per scraped page.

PROXY_SCHEME

Outbound proxy scheme. Optional; set all five PROXY_* variables or none.

PROXY_HOST

Outbound proxy host. Enables per-request rotating proxy sessions.

PROXY_PORT

Outbound proxy port. Required when PROXY_HOST is set.

PROXY_LOGIN

Outbound proxy username. Required when PROXY_HOST is set. Secret.

PROXY_PASSWORD

Outbound proxy password. Required when PROXY_HOST is set. Secret.

MCP_TRANSPORT

stdio (client spawns the process) or http (streamable HTTP listener).

MCP_NAME

Server name reported in the MCP initialize handshake.

MCP_PATH

HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.

SERVER_PORT

TCP port to listen on. Used only when MCP_TRANSPORT=http.

SERVER_READ_TIMEOUT

HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.

SERVER_WRITE_TIMEOUT

HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.

LOG_MODE

local (text, debug) or prod (JSON, info). Logs go to stderr.

MAX_IDLE_CONNS_PER_HOST

Idle connections the outbound HTTP client keeps per host.

MAX_QUERIES

Maximum queries or URLs accepted in one call.

DEFAULT_RESULTS

Snippets returned per query when the call does not ask for a count.

MAX_RESULTS

Upper bound for snippets per query.

DEFAULT_IMAGES

Images returned per query when the call does not ask for a count.

MAX_IMAGES

Upper bound for images per query.

DEFAULT_TIMEOUT_MS

Per-call timeout in milliseconds when the call does not request one.

MIN_TIMEOUT_MS

Lowest timeout a call may request, in milliseconds.

MAX_TIMEOUT_MS

Highest timeout a call may request, in milliseconds.

DEFAULT_DOCUMENT_CHARS

Characters kept per scraped page when the call does not ask for a limit.

MAX_DOCUMENT_CHARS

Upper bound for characters kept per scraped page.

PROXY_SCHEME

Outbound proxy scheme. Optional; set all five PROXY_* variables or none.

PROXY_HOST

Outbound proxy host. Enables per-request rotating proxy sessions.

PROXY_PORT

Outbound proxy port. Required when PROXY_HOST is set.

PROXY_LOGIN

Outbound proxy username. Required when PROXY_HOST is set. Secret.

PROXY_PASSWORD

Outbound proxy password. Required when PROXY_HOST is set. Secret.

MCP_TRANSPORT

stdio (client spawns the process) or http (streamable HTTP listener).

MCP_NAME

Server name reported in the MCP initialize handshake.

MCP_PATH

HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.

SERVER_PORT

TCP port to listen on. Used only when MCP_TRANSPORT=http.

SERVER_READ_TIMEOUT

HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.

SERVER_WRITE_TIMEOUT

HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.

LOG_MODE

local (text, debug) or prod (JSON, info). Logs go to stderr.

MAX_IDLE_CONNS_PER_HOST

Idle connections the outbound HTTP client keeps per host.

MAX_QUERIES

Maximum queries or URLs accepted in one call.

DEFAULT_RESULTS

Snippets returned per query when the call does not ask for a count.

MAX_RESULTS

Upper bound for snippets per query.

DEFAULT_IMAGES

Images returned per query when the call does not ask for a count.

MAX_IMAGES

Upper bound for images per query.

DEFAULT_TIMEOUT_MS

Per-call timeout in milliseconds when the call does not request one.

MIN_TIMEOUT_MS

Lowest timeout a call may request, in milliseconds.

MAX_TIMEOUT_MS

Highest timeout a call may request, in milliseconds.

DEFAULT_DOCUMENT_CHARS

Characters kept per scraped page when the call does not ask for a limit.

MAX_DOCUMENT_CHARS

Upper bound for characters kept per scraped page.

PROXY_SCHEME

Outbound proxy scheme. Optional; set all five PROXY_* variables or none.

PROXY_HOST

Outbound proxy host. Enables per-request rotating proxy sessions.

PROXY_PORT

Outbound proxy port. Required when PROXY_HOST is set.

PROXY_LOGIN

Outbound proxy username. Required when PROXY_HOST is set. Secret.

PROXY_PASSWORD

Outbound proxy password. Required when PROXY_HOST is set. Secret.

MCP_TRANSPORT

stdio (client spawns the process) or http (streamable HTTP listener).

MCP_NAME

Server name reported in the MCP initialize handshake.

MCP_PATH

HTTP path the MCP endpoint is served on. Used only when MCP_TRANSPORT=http.

SERVER_PORT

TCP port to listen on. Used only when MCP_TRANSPORT=http.

SERVER_READ_TIMEOUT

HTTP read timeout as a Go duration. Used only when MCP_TRANSPORT=http.

SERVER_WRITE_TIMEOUT

HTTP write timeout as a Go duration. Used only when MCP_TRANSPORT=http.

LOG_MODE

local (text, debug) or prod (JSON, info). Logs go to stderr.

MAX_IDLE_CONNS_PER_HOST

Idle connections the outbound HTTP client keeps per host.

MAX_QUERIES

Maximum queries or URLs accepted in one call.

DEFAULT_RESULTS

Snippets returned per query when the call does not ask for a count.

MAX_RESULTS

Upper bound for snippets per query.

DEFAULT_IMAGES

Images returned per query when the call does not ask for a count.

MAX_IMAGES

Upper bound for images per query.

DEFAULT_TIMEOUT_MS

Per-call timeout in milliseconds when the call does not request one.

MIN_TIMEOUT_MS

Lowest timeout a call may request, in milliseconds.

MAX_TIMEOUT_MS

Highest timeout a call may request, in milliseconds.

DEFAULT_DOCUMENT_CHARS

Characters kept per scraped page when the call does not ask for a limit.

MAX_DOCUMENT_CHARS

Upper bound for characters kept per scraped page.

PROXY_SCHEME

Outbound proxy scheme. Optional; set all five PROXY_* variables or none.

PROXY_HOST

Outbound proxy host. Enables per-request rotating proxy sessions.

PROXY_PORT

Outbound proxy port. Required when PROXY_HOST is set.

PROXY_LOGIN

Outbound proxy username. Required when PROXY_HOST is set. Secret.

PROXY_PASSWORD

Outbound proxy password. Required when PROXY_HOST is set. Secret.

MCP Retrieval MCP Server

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