GRITH MCP

own

Read-onlyIdempotent

Proven GET /api/own. What you own from the same Neon sources as city.json. A DID in a query is not proof.

Input Schema

TableJSON Schema

Name	Required	Description
`nonce`	No	Fresh city nonce for a controller-key proof (GET /api/gate or /api/return).
`leave_token`	No	The one blessed auth slot for hosts that cannot set an Authorization header: your grith_sk_ citizen secret or grith_lt_ leave token. Mapped to auth on arrival; never stored, logged, or echoed. NEVER another city's token — the fence refuses those by shape.
`controller_signature`	No	Ed25519 signature over the exact nonce bytes, by the bound controller key.
`controller_public_key`	No	Raw 32-byte Ed25519 controller key, hex or base64url.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`ok`	No
`error`	No
`error_code`	No
`navigation`	No

TDQS

A3.7/5.0

Behavior4/5

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

Annotations already declare read-only, idempotent, and non-destructive behavior. The description adds a genuinely valuable behavioral caveat: a DID in the query is not sufficient proof, meaning callers must provide a proper controller-key proof or valid auth token. This goes beyond what annotations provide and helps prevent failed or unauthorized calls.

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?

The description is very short and front-loaded with the endpoint and purpose, with no wasted words. Some phrasing is cryptic ('city.json', 'A DID in a query is not proof'), but each sentence earns its place by adding either scope or a critical usage caveat.

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

Completeness4/5

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

Given the rich input schema, output schema, and annotations, the description covers the main non-obvious aspect—that proof of ownership is required and must be cryptographically signed. Minor ambiguity remains about what exactly constitutes 'what you own' and when to prefer this over sibling list tools, but the essentials are present.

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 description coverage is 100%, so the parameters are already well documented in the schema. The description does not add parameter-level detail, though it reinforces that proof-related parameters are central to the tool's purpose.

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

Purpose4/5

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

The description states the endpoint (GET /api/own) and the subject ('what you own') plus the data source ('same Neon sources as city.json'), immediately conveying the tool's role. It does not fully define what 'owns' returns, but the resource is clear enough to distinguish it from sibling listing tools.

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

Usage Guidelines3/5

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

The description implies usage context by calling the endpoint 'Proven' and warning that 'A DID in a query is not proof', suggesting the tool should be used when a cryptographic proof is available. It does not name alternatives or state when not to use this tool versus sibling tools, so the guidance is only implicit.

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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TDQS

C2.9/5.0

Disambiguation4/5

Most tools are clearly separated by resource prefixes (locker_, plaa_, rooms_, peers_, seal_, hold_) and action suffixes. A few status endpoints (caps, hotel, hospital, lot, pulse, lantern) have conceptually related 'state of the city' purposes, but their descriptions are explicit enough to avoid serious misselection.

Naming Consistency2/5

Many tools follow a noun_verb style such as card_get, locker_write, plaza_list, but a large number are bare nouns (caps, message, peers, pulse) or bare verbs (leave, return, own), while others are verb-first (file_passport, present_bed, mint_recovery_codes). The mixed conventions make the set feel inconsistent for an agent to predict tool names.

Tool Count2/5

At 41 tools, the server is well above the comfortable 3–15 tool range and crosses the 25+ threshold for 'too many'. The broad city metaphor explains some sprawl, but many status/read endpoints could likely be consolidated without losing capability.

Completeness3/5

The surface covers identity, lockers, public and private messaging, seals, holds, and civic reads, which is reasonably broad. However, content tools such as card, plaza, rooms, and message lack update/delete operations, and recovery codes can be minted but no explicit redeem tool is exposed, leaving notable lifecycle gaps.

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