fugu-mcp
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| FUGU_BASE_URL | No | OpenAI-compatible base URL. Requests go to <base>/chat/completions. | https://api.sakana.ai/v1 |
| SAKANA_API_KEY | No | Sent as Authorization: Bearer <key>. Optional at startup; required when calling tools. | |
| FUGU_TIMEOUT_MS | No | Per-request timeout in milliseconds. Orchestrators are slow; the default is generous. | 120000 |
| FUGU_DEFAULT_MODEL | No | Model used when a tool call omits model. | fugu-ultra |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| ask_fuguA | Ask Sakana Fugu (a separate orchestration LLM) for a second opinion on a HARD, SELF-CONTAINED problem, or to cross-check your own reasoning with a different model. Good for: a tricky algorithm/proof, a thorny design trade-off, a 'is my approach sound?' gut-check, or a multi-model panel on a discrete question. The prompt MUST contain all needed context — Fugu cannot see the repo, files, or this conversation. Do NOT use it for interactive or iterative repo work, multi-step edits, running commands, or anything that needs to read/modify local files — do that yourself. Calls can be slow (tens of seconds). |
| fugu_second_opinionA | Get a rigorous SECOND OPINION from Sakana Fugu (a separate LLM) on a discrete piece of work. Provide the |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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