#tonyfettes/skills-deepseek-web-search

A tiny "web search" CLI written in pure MoonBit: run one native web search per query through DeepSeek's Anthropic-compatible Messages API and print the citeable sources the model should use. Sources arrive as a bounded markdown list (- [title](url) — snippet (date)), deduped by URL and capped at a consumer-chosen result limit.

It powers a SeekMoon-style "web search" skill; the module is a single top-level executable package (root moon.pkg, pkgtype(kind: "executable")) with the logic in a module-internal package:

internal/search/    DeepSeek native-search client (Messages POST + block
                    parsing, dedupe, citation join, markdown formatting)

The searched sources arrive in two pieces that the module joins by URL: the citeable items (url, title, page_age) live in web_search_tool_result blocks, while the snippet for a URL is the cited_text of a text block's citation entry. Sources are deduped by URL and cut to a result cap (default 8).

Only a DeepSeek API key is needed (the DEEPSEEK environment variable or --api-key); no third-party search API.

#Running

Once published on mooncakes.io:

moonx tonyfettes/skills-deepseek-web-search "MoonBit programming language"
moonx tonyfettes/skills-deepseek-web-search --max-results 5 "what is wasm"
moonx tonyfettes/skills-deepseek-web-search --api-key $DEEPSEEK "MoonBit"
moonx tonyfettes/skills-deepseek-web-search --help

Options: --api-key <key> (DeepSeek API key; default $DEEPSEEK), --base-url <url> (Messages base, default https://api.deepseek.com/anthropic/v1), --model <name> (default deepseek-v4-flash), --max-results <n> (source cap, default 8), --max-uses <n> (native tool uses per query, default 5), --max-tokens <n> (default 4096), --timeout-ms <n> (default 120000), --stdin (read one query per line from stdin), -h/--help.

Exit codes: 0 every query searched and printed; 1 at least one query failed (each failure prints one error: ... line); 2 usage error.

#Local development

moon test                        # 11 offline unit tests + 1 opt-in realworld (needs $DEEPSEEK)
moon cram test tests/cram        # offline CLI usage contract
moon run --target native . -- "MoonBit programming language"
moon build --target wasm         # the artifact moonx runs

#Notes

Each query costs an auxiliary DeepSeek model turn (native web_search server tool); the model's prose is discarded — only result blocks survive.
Absence of web_search_tool_result blocks is reported as an error, not rendered as an empty result set: that is a provider misfire.
Queries are capped at 2000 chars; a search call is wall-bounded by --timeout-ms.
The CLI argument parser tolerates runners that pass argv[0] (native moonrun) and those that do not (moonx).

Source Files

main.mbt

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