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find_investors

Read-only

UNDERSTANDING — The reverse portfolio edge: which VC firms in the network back a given provider/company (by slug). The investor COUNT is free; the named firms need Understanding. Priced B2 (cross-catalog synthesis) — $0.05 per call under pay-as-you-go; included in Understanding and Influence. See apis://prices.

Input Schema

NameRequiredDescriptionDefault
slugYesProvider slug — lowercase, hyphenated, as find_providers returns it, e.g. "stripe".
contextNoOptional: one sentence on why you are asking. Never used to rank; read only if a result is wrong.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / context / description
      Previous value: -"Optional: why you are asking. One sentence — the task you are trying to complete, or what you expect to get back. Never included in the answer and never used to rank; it is read only when a result turns out to be wrong, which is when knowing the intent is what makes the report actionable."New value: +"Optional: one sentence on why you are asking. Never used to rank; read only if a result is wrong."
  2. Changed1 schema field changed
    • addedInput schema / properties / slug / description
      Added value: +"Provider slug — lowercase, hyphenated, as find_providers returns it, e.g. \"stripe\"."
  3. Changed1 schema field changed
    • addedInput schema / properties / context
      Added value: +{
+  "description": "Optional: why you are asking. One sentence — the task you are trying to complete, or what you expect to get back. Never included in the answer and never used to rank; it is read only when a result turns out to be wrong, which is when knowing the intent is what makes the report actionable.",
+  "type": "string"
+}
  4. Added

TDQS

A3.9/5.0
Behavior4/5

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

Annotations already cover readOnlyHint=true and openWorldHint=false, so the safety profile is set. The description adds non-obvious behavioral context: a partial paywall (count free, named firms gated behind Understanding), a per-call price, and a pointer to apis://prices. It does not describe pagination or result shape, but the added gating/cost detail is meaningful.

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?

One tight paragraph, front-loaded with the capability statement, then gating and price. Every clause earns its place and nothing is repeated.

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

Completeness3/5

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

With no output schema, the description should carry more of the return-value burden; it only implies a count plus named firms and does not describe ordering, limits, or empty-result behavior. It is adequate for a simple lookup but leaves the response shape underspecified.

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%, so both parameters are already documented in the schema. The description only echoes 'by slug' and adds no format or edge-case semantics beyond what the schema provides — baseline 3 applies.

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 ('which VC firms in the network back a given provider/company (by slug)') and frames it as 'the reverse portfolio edge,' which implicitly contrasts it with the forward-looking vc_portfolio sibling. An agent can tell what it retrieves without opening the schema.

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?

It discloses that the investor COUNT is free while named firms require Understanding, and that it is priced B2 at $0.05/call — useful gating context. But it never names the alternative (vc_portfolio) or states an explicit when-to-use/when-not condition, so routing is left to inference.

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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