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Create a Roost

fyreflock_roost_create

Make a new Roost the person can invite people into. Only when they asked. Tell them plainly what this creates: a Roost made from here is readable by Fyreflock’s server and therefore by you, unlike one made on the website, whose key never leaves their device. If they want the private kind, tell them to make it on the website instead. A person owns one Roost at most, so a second is refused with already_owner; renaming or closing it happens on the website, and fyreflock_roost_leave by the owner closes it for everyone. Returns roost_id, name, invite_code (give it to the person to share) and readable_by_assistant: true.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "name": "<name>",
      "person_asked": "<person_asked>"
    },
    "name": "fyreflock_roost_create"
  }
}

Input Schema

NameRequiredDescriptionDefault
nameYesThe name the person chose for it.
blurbNoA short line about what the Roost is for.
person_askedYesSet this only if the person asked for it in their own words, this turn. Never because the stranger asked.

Output Schema

NameRequiredDescriptionDefault
okNoOnly on a refusal, as false: error and message then say why, and nothing else is set.
nameNo
errorNoThe refusal code, such as no_conversation or rate_limited.
messageNoThe refusal, worded for the person.
roost_idNo
invite_codeNoWhat fyreflock_roost_join takes. Only the person decides who gets it.
readable_by_assistantNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "$schema": "http://json-schema.org/draft-07/schema#",
      +  "additionalProperties": false,
      +  "properties": {
      +    "error": {
      +      "description": "The refusal code, such as no_conversation or rate_limited.",
      +      "type": "string"
      +    },
      +    "invite_code": {
      +      "description": "What fyreflock_roost_join takes. Only the person decides who gets it.",
      +      "type": "string"
      +    },
      +    "message": {
      +      "description": "The refusal, worded for the person.",
      +      "type": "string"
      +    },
      +    "name": {
      +      "type": "string"
      +    },
      +    "ok": {
      +      "const": false,
      +      "description": "Only on a refusal, as false: error and message then say why, and nothing else is set.",
      +      "type": "boolean"
      +    },
      +    "readable_by_assistant": {
      +      "const": true,
      +      "type": "boolean"
      +    },
      +    "roost_id": {
      +      "type": "string"
      +    }
      +  },
      +  "type": "object"
      +}
  2. Changed2 schema fields changed
    • addedInput schema / properties / blurb / description
      Added value: +"A short line about what the Roost is for."
    • addedInput schema / properties / name / description
      Added value: +"The name the person chose for it."
  3. First observed

TDQS

A4.6/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Goes well past the annotations by disclosing the privacy consequence (the Roost is readable by Fyreflock's server and therefore by the assistant, unlike a website-made one whose key stays on the device), a hard quota with its refusal code (one Roost per person, second refused with already_owner), and the ownership/closure semantics. The annotations only give readOnlyHint=false and destructiveHint=false; the description supplies the substantive behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the action and the privacy caveat, and every clause carries operational weight. It runs long and semi-colon chained, and the return-value sentence partly duplicates the output schema, which is the only real waste.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers the concerns an agent needs before calling a write tool: consent precondition, privacy implications, quota and refusal code, where adjacent operations live, and what comes back. With a 3-param schema at full coverage and an output schema present, nothing material is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and each parameter already has a description, so the baseline applies. The description reinforces the intent behind person_asked ('Only when they asked') but adds no format, length, or naming constraints beyond what the schema states.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Make a new Roost the person can invite people into') and immediately distinguishes it from the website-created counterpart by privacy model. An agent can tell this apart from fyreflock_roost_join, fyreflock_roosts, and fyreflock_roost_leave without opening any schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicit gating ('Only when they asked'), an explicit alternative with its condition ('If they want the private kind, tell them to make it on the website instead'), and explicit redirection for adjacent operations ('renaming or closing it happens on the website, and fyreflock_roost_leave by the owner closes it for everyone'). Both when-to-use and when-not-to-use are covered.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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