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LinkedIn: Follow user

linkedin_follow_user

Follow a LinkedIn user from the connected personal account. Resolve the exact provider user_id first.

Input Schema

NameRequiredDescriptionDefault
user_idYesExact provider user ID returned by the relevant profile/contact resolver; never a display name or profile URL. For LinkedIn, use the stable system ID. LinkedIn system user ID: Stable LinkedIn user id, commonly ACo... for Classic profiles. Obtain with: linkedin_get_profile_from_url(profile_url) -> result.id; linkedin_get_profile(user_id_or_public_identifier) -> result.id; linkedin_search_people(...) -> selected result.id Never pass: full linkedin.com/in/... URL, person name, company ID.
account_idNoOptional Nilyo connection ID (unipile_account_id from list_connected_accounts). Omit when the user has one account for this provider. When several exist, Nilyo never guesses: list them (display name, identifier, provider user ID), choose the one the user named or ask, and pass its ID here.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / user_id / description
      Previous value: -"Exact provider user ID returned by the relevant profile/contact resolver; never a display name or profile URL. For LinkedIn, use the stable system ID. LinkedIn system user ID: Stable LinkedIn/Unipile user id, commonly ACo... for Classic profiles. Obtain with: linkedin_get_profile_from_url(profile_url) -> result.id; linkedin_get_profile(user_id_or_public_identifier) -> result.id; linkedin_search_people(...) -> selected result.id Never pass: full linkedin.com/in/... URL, person name, company ID."New value: +"Exact provider user ID returned by the relevant profile/contact resolver; never a display name or profile URL. For LinkedIn, use the stable system ID. LinkedIn system user ID: Stable LinkedIn user id, commonly ACo... for Classic profiles. Obtain with: linkedin_get_profile_from_url(profile_url) -> result.id; linkedin_get_profile(user_id_or_public_identifier) -> result.id; linkedin_search_people(...) -> selected result.id Never pass: full linkedin.com/in/... URL, person name, company ID."
  2. First observed

TDQS

B3.4/5.0
Behavior3/5

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

Annotations already declare non-read-only, non-idempotent, non-destructive, and open-world behavior, so the bar is lower. The description adds useful auth/precondition context ('connected personal account', resolve exact ID first) but does not disclose duplicate-follow behavior, rate limits, or notification effects.

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?

Two short sentences, front-loaded with the action and account scope, followed by the key prerequisite. No filler or redundancy.

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?

For a mutation tool with no output schema but with complete schema descriptions and annotations covering safety, the description supplies the key account context and ID-resolution prerequisite. It omits failure or duplicate-follow behavior, but this is not fatal given the structured fields.

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 schema already documents both parameters in detail. The description's 'Resolve the exact provider user_id first' reinforces the schema's existing warning against display names/URLs but adds no new syntax, format, or constraint.

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?

States a specific verb ('Follow') and resource ('a LinkedIn user') with the scope 'from the connected personal account'. Clear, but it does not name or distinguish from sibling tools such as linkedin_unfollow_user or linkedin_send_invitation.

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

Usage Guidelines2/5

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

Provides a prerequisite ('Resolve the exact provider user_id first') but no when-to-use, when-not-to-use, or alternative-tool guidance. It does not explain when to follow versus sending an invitation or using other LinkedIn relation tools.

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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