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optionality-mcp

by io.github.lonniev

optionality_receive_credentials

Pick up credentials from the Secure Courier.

Completes the CREDENTIAL-DELIVERY flow (the ownership-proof counterpart is receive_npub_proof).

Call this only after the user confirms they have replied. Deterministic, one-shot retrieval: name the response you want with (sender_npub, service, dpop_token) and the tool drains ONLY the rendezvous relay that channel was pinned to. Every popped DM with the wrong session phrase is deleted and its sender is NACK'd; the first DM with the matching phrase is accepted (ACK'd) and the scan stops. If none match, the queue is drained and a courier_not_found result is returned. Do NOT poll, loop, or retry.

If a credential_card (ncred1...) is provided, it is redeemed directly without any relay access (dpop_token not required for that path). On success, the payment processor client is reinitialized from the new credentials — no server restart needed.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
serviceNoRequired. The credential service name (must match the service used in request_credential_channel).
dpop_tokenNoRequired. The session phrase returned by request_credential_channel for this exact channel.
sender_npubNoRequired. The npub that sent the credentials.
credential_cardNoOptional. An ncred1... card to redeem directly (bypasses the relay drain; dpop_token not needed).

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

TDQS

A4.8/5.0
Behavior5/5

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

No annotations provided, so description carries full burden. It details deterministic one-shot retrieval, relay draining behavior, NACK/ACK process, and credential_card redemption without server restart.

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?

Well-structured with a lead sentence and clear sections, but somewhat lengthy. However, every sentence contributes useful information.

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?

Description covers the entire flow, including success/failure conditions, two execution paths, and effects (client reinitialization). An output schema exists, so return values are not needed.

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

Parameters4/5

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

Schema has 100% description coverage for all 4 parameters. Description adds behavioral context (e.g., dpop_token as session phrase, sender_npub as the sender, credential_card bypasses relay), providing additional value beyond schema.

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?

The description states 'Pick up credentials from the Secure Courier' and distinguishes the tool from its sibling 'receive_npub_proof' by referencing the CREDENTIAL-DELIVERY flow.

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?

Explicitly states 'Call this only after the user confirms they have replied' and warns against polling, looping, or retrying. Also describes two paths (relay drain and credential_card redemption).

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

B3.1/5.0
Disambiguation2/5

There is substantial overlap and confusion between multiple sets of tools. For example, `optionality_get_operator_onboarding_status` and `optionality_get_patron_onboarding_status` serve different identities but have a similar purpose that could be confusing. More critically, there are generic-named tools like `optionality_receive_credentials` and `optionality_receive_npub_proof` that both drain a relay mailbox in a very similar way, distinguished primarily by the type of token they return. The presence of both `optionality_session_status` and `optionality_service_status` is a major point of ambiguity, as both seem to check the health and configuration of the operator.

Naming Consistency4/5

The naming convention is highly consistent, using a snake_case, verb_noun pattern (e.g., `list_journal`, `delete_journal`). The prefix `optionality_` is applied to all tools. The verb 'get' and 'list' are used predictably. Minor point deduction for a few outliers like `optionality_deal_scenario` and `optionality_judge_trade` which are domain-specific verbs that don't perfectly fit the CRUD pattern but are still clear in context.

Tool Count1/5

With 71 tools, this server is severely over-staffed. This indicates poor separation of concerns, likely bundling multiple distinct domains or services into a single surface. A tool count this high dramatically increases cognitive load and API surface area, making it difficult for an agent to find the correct tool.

Completeness3/5

The tool surface covers an enormous amount of functionality, including imaginative ownership-proof flows via Nostr DMs. However, the `check_balance`/`purchase_credits` flow appears incomplete without a `refund_credits` tool for operator support scenarios. While the server has a `restore_credits` tool, it requires authentication. Overall, the surface is individually creative but organizationally incoherent.

Resources