DeltaSignal ATLAS-7

DeltaSignal alpha sweep

deltasignal_alpha_sweep

Read-onlyIdempotent

Use this read-only composite workflow tool for opportunity and alpha screening across the current DeltaSignal issuer universe. It server-enforces the alpha-sweep call plan: readiness, alpha_opportunities with limit 15, and daily_changes; alpha_opportunities defaults to operating-company issuers. Parameters: optional output_mode=compact only; do not pass limit, offset, ticker, source_date, or issuer filters because this preset owns exact arguments internally. Behavior: read-only and idempotent; it performs three internal HTTPS reads, has no destructive side effects, never calls issuer-level tools, and preserves partial results if one internal call fails. Use it when the user asks for alpha opportunities, opportunity sweep, clean alpha board, or names worth follow-up research; treat the result as a screen requiring issuer drilldown.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`output_mode`	No	Optional response mode. Only compact is accepted.

Output Schema

TableJSON Schema

Name	Required	Description
`data`	Yes	Server-enforced DeltaSignal alpha sweep composite response.
`provenance`	Yes	Traceability information for the MCP tool response.
`mcp_summary`	Yes	Concise high-signal summary of the tool response. Maximum 140 characters.
`usage_metadata`	No	Performance and estimated cost metadata for this MCP tool call.
`suggested_follow_ups`	Yes	Concrete next MCP calls an agent can run to continue the workflow.

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

Changed4 schema fields changedJun 9, 2026

removedOutput schema / properties / data / properties / evidence_sections

Removed value: -{
-  "description": "Company-report section availability records. States include available, soft_miss, not_requested, failed_advisory, and failed_closed.",
-  "items": {
-    "additionalProperties": true,
-    "description": "Evidence section availability record.",
-    "type": "object"
-  },
-  "type": "array"
-}

removedOutput schema / properties / data / properties / issuer_evidence_envelope

Removed value: -{
-  "additionalProperties": true,
-  "description": "Company-report evidence envelope with parser-stable sections, availability states, SPECTRA metadata, and non-advice boundary.",
-  "type": "object"
-}

removedOutput schema / properties / data / properties / publication_audit_block

Removed value: -{
-  "additionalProperties": true,
-  "description": "Compact audit block for report publication, including route, evidence hash, section availability summary, SPECTRA state, and daily-change drilldown reference.",
-  "type": "object"
-}

removedOutput schema / properties / data / properties / spectra_metadata

Removed value: -{
-  "additionalProperties": true,
-  "description": "Promoted SPECTRA metadata for company reports, including latest point dates, row counts, current read, risk tier, charge level, and source date bounds when available.",
-  "type": "object"
-}

Changed4 schema fields changedJun 8, 2026

addedOutput schema / properties / data / properties / evidence_sections

Added value: +{
+  "description": "Company-report section availability records. States include available, soft_miss, not_requested, failed_advisory, and failed_closed.",
+  "items": {
+    "additionalProperties": true,
+    "description": "Evidence section availability record.",
+    "type": "object"
+  },
+  "type": "array"
+}

addedOutput schema / properties / data / properties / issuer_evidence_envelope

Added value: +{
+  "additionalProperties": true,
+  "description": "Company-report evidence envelope with parser-stable sections, availability states, SPECTRA metadata, and non-advice boundary.",
+  "type": "object"
+}

addedOutput schema / properties / data / properties / publication_audit_block

Added value: +{
+  "additionalProperties": true,
+  "description": "Compact audit block for report publication, including route, evidence hash, section availability summary, SPECTRA state, and daily-change drilldown reference.",
+  "type": "object"
+}

addedOutput schema / properties / data / properties / spectra_metadata

Added value: +{
+  "additionalProperties": true,
+  "description": "Promoted SPECTRA metadata for company reports, including latest point dates, row counts, current read, risk tier, charge level, and source date bounds when available.",
+  "type": "object"
+}

Changed2 schema fields changedMay 27, 2026

changedOutput schema / properties / data / properties / issuer_drilldown_policy / description

Previous value: -"Morning-brief ticker selection and advisory issuer-layer policy for fundamentals, stress, peer, alpha, and SPECTRA evidence."New value: +"Morning-brief issuer drilldown policy. Standard morning briefs do not run advisory issuer layers automatically; use company-report or deep-brief follow-ups for fundamentals, stress, peer, alpha, and SPECTRA evidence."

changedOutput schema / properties / data / properties / issuer_drilldowns / description

Previous value: -"Bounded issuer evidence groups selected from the daily scan. Each group can include company_fundamentals, covenant_stress, peer_ranking, alpha_signals, and spectra_field_map payloads."New value: +"Reserved issuer evidence groups. Empty for standard morning briefs unless a future explicit deep-brief mode runs issuer drilldowns."

Changed2 schema fields changedMay 16, 2026

addedOutput schema / properties / data / properties / issuer_drilldown_policy

Added value: +{
+  "additionalProperties": true,
+  "description": "Morning-brief ticker selection and advisory issuer-layer policy for fundamentals, stress, peer, alpha, and SPECTRA evidence.",
+  "type": "object"
+}

addedOutput schema / properties / data / properties / issuer_drilldowns

Added value: +{
+  "description": "Bounded issuer evidence groups selected from the daily scan. Each group can include company_fundamentals, covenant_stress, peer_ranking, alpha_signals, and spectra_field_map payloads.",
+  "items": {
+    "additionalProperties": true,
+    "description": "Issuer drilldown evidence group.",
+    "type": "object"
+  },
+  "type": "array"
+}

Changed1 schema field changedMay 14, 2026

addedOutput schema / properties / data / properties / spectra_field_map

Added value: +{
+  "additionalProperties": true,
+  "description": "Raw deltasignal_spectra_field_map payload when a company-report SPECTRA advisory leg succeeds.",
+  "type": "object"
+}

AddedMay 14, 2026

TDQS

A4.9/5.0

Behavior5/5

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

The description goes well beyond the readOnlyHint/idempotentHint annotations by disclosing concrete behaviors: three internal HTTPS reads, preservation of partial results on failure, never calls issuer-level tool, and the default operating-company issuer filter. This adds meaningful operational context that annotations alone do not provide.

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 information-dense yet each clause serves a purpose: purpose/scope, internal call plan, parameter constraints, behavior, and usage triggers. No filler or redundancy; it efficiently packs critical guidance into three sentences.

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?

For a composite tool with only one parameter and a rich output schema, the description fully covers what the tool does, how it behaves, when to use it, and how to interpret results. It also handles edge cases (partial failures, prohibited params) which is more than sufficient for an agent to invoke it correctly.

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 coverage is 100% for the single output_mode parameter, giving a baseline of 3. The description adds valuable guidance by explicitly restricting to 'compact only' and prohibiting other common parameters (limit, offset, ticker, etc.) because the preset owns them, which helps the agent avoid passing invalid arguments.

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 a specific action: 'composite workflow tool for opportunity and alpha screening across the current DeltaSignal issuer universe.' It distinguishes from siblings by emphasizing the server-enforced preset call plan (readiness, alpha_opportunities with limit 15, daily_changes), making it clear this is an aggregated sweep rather than a single-purpose tool.

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?

Provides explicit invocation conditions: 'Use it when the user asks for alpha opportunities, opportunity sweep, clean alpha board, or names worth follow-up research.' It also warns against passing limit/offset/ticker/issuer filters because the preset owns arguments, and clarifies the result is a screen requiring issuer drilldown, implying when to switch to other 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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