GYOTAK Fish Market
https://line-harness.gyotak.workers.dev/mcp ↗
Description
Sashimi-grade flash-frozen fish from Thailand. Catalog, ordering, and on-chain traceability.
What our measurements say
GYOTAK Fish Market is a remote MCP server published at line-harness.gyotak.workers.dev. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 746 ms, a delay an agent will notice. It exposes a broad tool surface of 23 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Some tool names clearly indicate purpose (e.g., 'get_catalog', 'search_fish')
- Descriptions for verification tools (verify_catch, verify_temp) explain blockchain verification use cases
Weaknesses
- Multiple descriptions are cut off mid-sentence (e.g., 'get_catalog' description ends abruptly)
- Parameters like 'referrerId' and 'komonId' lack contextual explanation
- Tools like 'place_order' have 15 optional parameters with unclear priority
get_catalog— Description ends mid-sentence without explaining wholesale pricing logicsearch_fish— Doesn't clarify if it's for retail/wholesale searchplace_order— 15 optional parameters create ambiguity about required fieldsverify_komon— Parameter 'komonId' lacks definition of what it representsget_komon_records— Status parameter doesn't explain valid values
Verdict
Event narrative
Risk: low
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 35ms → warm 37ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
get_catalogGet GYOTAK's full fish catalog with real-time availability, retail prices (THB/kg), freshness tiers, and traceability records. Retail prices are always included. For registered chat customers, pass customerKey (gyotak_cus_...) to show wholesale pricing and enable one-tap checkout. For LINE VIP customers, pass lineUserId. Delivery is available within Thailand only. International addresses are not accepted.
lineUserIdstringcustomerKeystring
search_fishSearch fish by name (Japanese, Thai, or English). Provide lineUserId to include VIP tier pricing.
querystringrequiredlineUserIdstring
get_contact_infoGet the two ways to buy from GYOTAK, with the contact details for each: retail (order here through place_order, or browse the web shop) and B2B wholesale for restaurants and businesses (LINE @284ezjvm, tier pricing, application required). Call this when the user asks how to buy, how to open a wholesale account, or how to reach GYOTAK. Takes no arguments and returns static text — for product availability or prices use get_catalog, and for other questions use ask_gyotak.
get_catch_reportsGet catch records by date or freshness tier. Returns GPS coordinates, photo timestamp, and blog URL for traceability verification. In-stock products reference these records; consumers can access records via blog URL on package label even after sold out. Planned integration: Each catch record will be registered on Midnight blockchain as an immutable on-chain transaction, making GPS coordinates, timestamps, and photo hashes tamper-proof and permanently verifiable.
datestringtierstring
place_orderPlace an order. Two modes: (A) VIP wholesale: provide lineUserId of a registered VIP customer. (B) Guest retail: provide customerName, phone, items array, and a delivery address — shippingAddress, shippingProvince and email are all required, and an order missing any of them is rejected. Guest orders are priced at tier-linked retail rates (server-calculated) and the total is final at this point; a confirmation email with a PromptPay QR follows. If customerKey is omitted, one is issued automatically (reusing an existing chat customer with the same email) and returned in the response and the confirmation email — tell the user to save it. Inventory is NOT deducted — orders go to the pick queue for staff fulfillment. Delivery is available within Thailand only, so the province must be a Thai one
lineUserIdstringcustomerKeystringfishNamestringrequestedKgnumbertotalThbnumbercustomerNamestringphonestringitemsarrayshippingAddressstringshippingProvincestringshippingDistrictstringemailstringlangstringreferrerIdstringmemostring
get_order_historyGet B2B order history (last 20 orders). Requires lineUserId of a registered VIP customer.
lineUserIdstringrequired
verify_catchVerify a GYOTAK catch record DIRECTLY from the Midnight blockchain. Reads on-chain state and returns the raw hex plus decoded fields for independent verification. Unlike get_catch_reports (which returns GYOTAK's own database), this lets you verify without trusting GYOTAK. GPS coordinates are cryptographically hidden (hiding commitment with secret nonce); only the region is provable. Supports both preprod and mainnet. batchId also accepts several IDs separated by commas: they are all checked against a single fetch of the contract state, and the response lists found/not-found per ID.
contractAddressstringrequiredbatchIdstringnetworkstring
verify_tempVerify GYOTAK cold-chain storage temperatures DIRECTLY from the Midnight blockchain. Reads on-chain state and returns decoded hourly temperature records per freezer for independent verification. Unlike the dashboard (which reads from GYOTAK's D1 database), this lets you verify without trusting GYOTAK. Each value is the HOURLY AVERAGE committed on-chain; it does not prove the temperature stayed within any limit at every moment in that hour. Supports both preprod and mainnet.
contractAddressstringfreezerIdnumberhourStartUtcstringnetworkstring
get_komon_recordsGet GYOTAK KOMON physical authentication records from the database. Each record represents a PUF (physically unclonable function) registration with minutiae extraction and on-chain commitment. Shielded records do not expose GPS.
statusstring
verify_komonVerify a GYOTAK KOMON record directly from the Midnight blockchain. Reads on-chain state and returns the raw hex plus decoded fields for independent verification. Unlike get_komon_records (which returns GYOTAK's database), this reads directly from the chain. Shielded records prove region membership without exposing GPS. Currently preprod only.
contractAddressstringkomonIdstringnetworkstring
ask_gyotakSearch GYOTAK FAQ for answers about shipping, payment, products, defrosting, traceability, B2B registration, etc. Returns top matching FAQ entries. If no match, suggest using contact_gyotak to escalate.
questionstringrequired
contact_gyotakSubmit a question to GYOTAK staff when FAQ does not have the answer. Staff will reply via Discord. Use check_reply to retrieve the response later.
questionstringrequirednamestring
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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