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Fintel Discovery — Financial Intelligence for AI Agents

by io.github.findimitrov
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Map Instrument IDs via OpenFIGI

MapInstrumentIds
Read-onlyIdempotent
    Map financial instrument identifiers between different ID systems using
    Bloomberg's OpenFIGI service. Converts between ticker symbols, ISINs,
    CUSIPs, and FIGIs in a single call.

    Use this tool when:
    - You have a ticker and need the ISIN or CUSIP (or vice versa)
    - You are normalizing instrument IDs when combining data from EDGAR,
      Yahoo Finance, and other sources that use different ID schemes
    - You need to identify what exchange a security trades on

    Supported idType values:
    - 'TICKER': Stock ticker symbol (e.g. 'AAPL')
    - 'ID_ISIN': ISIN (e.g. 'US0378331005')
    - 'ID_CUSIP': CUSIP (e.g. '037833100')
    - 'ID_FIGI': Bloomberg FIGI

    Include 'exchCode': 'US' to target US exchanges for ticker lookups.

    Source: Bloomberg OpenFIGI API. No API key required (optional key raises rate limits).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
paramsNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"f258bd16-f060-4e4a-a55d-221a0484866d"New value: +"05525087-35e9-4aac-b06d-6d88ce386b2e"
  2. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"5f4db44b-e5cc-4f3a-8da3-ac591a019c81"New value: +"f258bd16-f060-4e4a-a55d-221a0484866d"
  3. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"d9f77642-e017-4785-9150-e658c2dba3a0"New value: +"5f4db44b-e5cc-4f3a-8da3-ac591a019c81"
  4. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"dbe99169-c071-4ed4-9ae9-8bbfb9a88ad8"New value: +"d9f77642-e017-4785-9150-e658c2dba3a0"
  5. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"3775b46a-5aa8-4586-af57-2453c8bcd08c"New value: +"dbe99169-c071-4ed4-9ae9-8bbfb9a88ad8"
  6. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"d81a5175-11e9-494a-baa5-71d4ffad4ab9"New value: +"3775b46a-5aa8-4586-af57-2453c8bcd08c"
  7. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"9e7f8798-7d22-4378-b93d-179c6f8cb854"New value: +"d81a5175-11e9-494a-baa5-71d4ffad4ab9"
  8. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"9919ff85-e960-472f-863b-3de4c5abed9f"New value: +"9e7f8798-7d22-4378-b93d-179c6f8cb854"
  9. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"38452924-d5df-4668-b51c-d7cd5acabc09"New value: +"9919ff85-e960-472f-863b-3de4c5abed9f"
  10. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"fa72f604-6239-428b-81df-11f07c2c8d00"New value: +"38452924-d5df-4668-b51c-d7cd5acabc09"
  11. Changed1 schema field changed
    • changedInput schema / $defs / OpenFIGIMapParams / properties / mcp_prompt_id / default
      Previous value: -"7b866f24-13ab-4e54-8d3a-f775612c393f"New value: +"fa72f604-6239-428b-81df-11f07c2c8d00"
  12. First observed

TDQS

A4.5/5.0
Behavior4/5

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

Annotations already declare readOnly, idempotent, non-destructive, closed-world. The description adds valuable context beyond that: it names the source (Bloomberg OpenFIGI API), states no API key is required, and notes an optional key raises rate limits. It omits error/batch behavior and limits, so not a full 5 given the API-backed nature of the tool.

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

Conciseness4/5

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

Front-loads purpose, then usage scenarios, then the idType value list and source note. Well-structured and largely waste-free, though the segmented bullet layout is slightly long for the core action.

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?

Covers what the tool does, when to use it, supported idType values, exchange targeting, and auth/rate-limit behavior. With an output schema present, return values need not be explained. The only gap is the unexplained fin-specific parameters that appear inconsistent with the tool's declared purpose.

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 reported as 0% at the top level, but the description documents the key semantic parameters: idType enum values with examples, idValue, and exchCode usage. It compensates well for the schema, though it doesn't cover the many fin-specific params (wholesaler_ids, source_resource_id, etc.) which appear irrelevant/copied and undocumented.

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+resource: mapping financial instrument identifiers between ID systems via OpenFIGI, naming the exact ID conversions (ticker, ISIN, CUSIP, FIGI). Distinguishes from the sibling SearchFigiInstruments by being the conversion tool rather than a search 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 an explicit 'Use this tool when' list with three concrete scenarios (ticker→ISIN/CUSIP, normalizing IDs across EDGAR/Yahoo, identifying exchange). This clearly routes the agent against alternatives like LookupTicker and SearchFigiInstruments.

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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