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modelnorth

fiverr-phantom-mcp

by modelnorth

fiverr_update_profile

Update your Fiverr seller profile description and tagline while avoiding account bans through humanized, timed automation. Replace outdated bio details or messaging directly via API input.

Instructions

Update seller profile description and/or tagline on Fiverr with anti-ban humanized timing.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
taglineNo
descriptionNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

A3.6/5.0
Behavior3/5

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

No annotations are provided, so the description must disclose behavioral traits. It mentions 'anti-ban humanized timing', which hints at deliberate pacing to avoid detection, but does not explain side effects, reversibility, or whether an active session is required. It discloses some behavior but leaves significant gaps for a mutation tool.

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

Conciseness5/5

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

The description is a single, front-loaded sentence that states the action and the anti-ban timing without any filler. Every word contributes to the tool's purpose and a notable behavioral trait. It is highly concise and well-structured.

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

Completeness2/5

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

For a mutation tool with no annotations, the description is incomplete. It does not mention prerequisites (e.g., having logged in via fiverr_launch_login), whether the update is partial or full, or what the return value indicates. The output schema exists but is not described, and the timing behavior is vague. An agent would lack guidance on failure handling or session requirements.

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 0%, so the description must clarify parameters. It names 'description and/or tagline', directly mapping to the two schema fields. However, it adds no constraints, length limits, or examples. It clarifies what the parameters are for but does not enrich the schema beyond the field names themselves.

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 clearly states the action (update) and the resource (seller profile description and/or tagline on Fiverr). It is specific and distinguishes from sibling read tools like get_status and get_overview, and from add_skills, by naming exactly what is updated. No ambiguity about the tool's core function.

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 for modifying profile text, but does not explicitly state when to use this tool versus alternatives. It does not mention that add_skills is for skills or that login is a prerequisite. No when-not guidance is given, so it relies on the agent inferring from context.

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