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Signal8 MCP Server

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Get Shares-Outstanding and Cash History

get_dilution_history
Read-only

Retrieve historical share counts and cash balances from SEC filings, with offering and cash-event markers to track dilution and funding gaps.

Instructions

Get the historical shares-outstanding and cash series (10 credits) from SEC XBRL filings, with offering and material-cash-event overlays so an issuance or a raise can be lined up against the share count and cash balance around it. Use for share count growth over time and for the cash trajectory between financings. 🔴 THE HISTORICAL SHARE COUNTS ARE AS FILED — each point is on the split basis in force when it was reported and is NOT rebased to today, so a reverse split shows as a step and points either side of one are not directly comparable. Do not compute a growth rate across a split boundary from these raw points. A gap in the series means no filing supplied that period, not that the share count was unchanged. ALWAYS RETURNS 200 — read available and reason, never the HTTP status. Coverage is partial: not_covered means THIS COMPANY HAS NOT BEEN ANALYSED YET, which is different from it having no dilution and different from an outage (an outage is a 5xx). Never report a company as having no dilution on the strength of an unavailable response. NULL, absent or withheld means NOT MEASURED — it NEVER means "no dilution", "no warrants", "no shelf" or zero. A numeric 0 is a MEASURED zero and defeats a null check, so decide from the accompanying availability/withheld/reason field, never from the value itself. If a figure is absent, say it was not measured; do not describe the company as having none of that instrument. Figures are as of meta.asOfDate, from filings read through meta.filingsThrough — a stale as-of date means the answer predates anything filed since, not that nothing has happened. Share counts are rebased onto a single split basis; a row that cannot be rebased is omitted and counted rather than published on a mixed basis. Included in Signal8 Pro — without it the call returns 403 with code FEATURE_NOT_AVAILABLE and requiredTier: "pro". That is a subscription-tier upgrade, not an add-on purchase; there is no separate add-on to buy.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
tickerYesStock ticker symbol (e.g., "MNTS", "VNRX")

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
dataNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Addedv0.1.2

TDQS

A4/5.0
Behavior4/5

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

With only readOnlyHint=true in annotations, the description adds a great deal of behavior: 200-always responses, split-basis caveats, series gaps, coverage semantics, NULL/zero meaning, as-of dates, and tier requirements. However, the split-basis statements are internally inconsistent ('as filed ... NOT rebased' vs 'rebased onto a single split basis'), which prevents a 5.

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

Conciseness3/5

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

The description is front-loaded with purpose, but the warning section is long and repeats the same NULL/not-measured idea multiple times. The content is mostly useful, but it is not concise.

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 deceptively complex tool, the description covers sourcing, overlays, error handling, null semantics, coverage vs outage, tier gating, and rebasing. The internal split-basis contradiction and the lack of an explicit response-format note are the remaining gaps, though an output schema exists.

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?

The schema already describes ticker with 100% coverage, so the description is not required to add parameter detail. It adds no new meaning beyond the schema for the single parameter.

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 names a specific verb ('Get') and resource ('historical shares-outstanding and cash series') and clarifies the data source and overlays. This clearly differentiates it from sibling tools like get_cash_history and get_split_history.

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

Usage Guidelines4/5

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

It explicitly says to use it for share-count growth over time and cash trajectory between financings, and includes strong cautions about split boundaries and unavailable coverage. It does not explicitly name when-not-to-use alternatives, so it stops short of a 5.

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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