MyDART

by kr.eocpa

Overview Discussions Admin

get_financials

Read-onlyIdempotent

MyDART MCP의 get_financials 도구는 매출·영업이익·순이익·자산/부채/자본 등 재무수치를 조회합니다 — 재무 질문 대부분은 이걸로 충분합니다.

[Purpose]

재무제표 figures start here. corp+year = LATEST filing (정정 반영); rcept_no = that filing AS FILED (재작성 전후 대조·합산 검증 — 구 get_xbrl).
사업보고서 prose: download_document; 부실징후(계속기업): get_going_concern.

[Usage]

"삼성전자 2025년 매출·영업이익" → corp="삼성전자", year=2025
"삼성전자와 SK하이닉스 실적 비교" → corp=["삼성전자","SK하이닉스"]
"이 공시본 그대로 전체" → rcept_no="…", sj_div=["BS","IS","CIS","CF","SCE"]

[Response]

Row keys: sj_div, account_nm, thstrm_amount(당기)/frmtrm_*(전기)/ bfefrmtrm_*(전전기)/thstrm_add_amount(누계). Amounts are STRINGS.
full: total_count=pre-filter, count=post-filter. rcept_no adds validations.

[Rules]

Quarterly/half IS·CIS: CUMULATIVE = thstrm_add_amount, thstrm_amount = that quarter alone; CF thstrm_amount is already YTD; BS: thstrm_amount only (see period_basis).
Cross-check the periods legend (전기/당기 off-by-one) and year_defaulted.
no_data is routing, not an error — follow next_step.

Input Schema

Name	Required	Description	Default
`corp`	No	회사명·종목코드·corp_code — string or array (comma list ok). scope=summary: 1 = single, 2+ = comparison (first 200 queried). scope=full: 1 only — extras dropped with a note. Unresolved entries dropped with a note; error only if none resolve. Omit with rcept_no.
`year`	No	결산 사업연도 (회계연도, not the filing year) — one per call; annual rows also carry 전기·전전기. Omitted → latest published 사업연도 by 결산월·report (year_defaulted=true).
`scope`	No	summary (default): 주요계정 ~14 per basis (자산·부채 유동/비유동/총계, 자본금·이익잉여금·자본총계, 매출액·영업이익·법인세차감전 순이익·당기순이익·총포괄손익); 연결·별도 together ≈ 28 rows per company (별도-only 14; 금융업 +α). full: 전체 재무제표 filtered by sj_div, hundreds~1k rows.
`format`	No	Unsupported — any value is rejected; omit. Tables come as items[].
`fs_div`	No	scope=full·rcept_no: 연결(CFS, default)/별도(OFS). CFS without data falls back to OFS (fs_div_note) — response fs_div = basis used. Ignored by summary (basis per row).
`report`	No	1Q·반기·3Q·연차	annual
`sj_div`	No	scope=full·rcept_no: 재무제표 to include — BS=재무상태표, IS=손익계산서, CIS=포괄손익계산서, CF=현금흐름표, SCE=자본변동표. Default BS+IS+CIS (단일 포괄손익계산서 companies put 손익 in CIS only); CF·SCE only when listed. String or comma list ok.
`rcept_no`	No	사업보고서 접수번호 → that filing AS FILED (later 정정 not reflected), plus 합산 검증 (validations). 분·반기 rcept → no_data; use corp+report. Combine with fs_div·sj_div; omit corp·year·scope.

Schema Changelog

Changes observed during successful MCP inspections.

Changed8 schema fields changedOct 15, 2026

changedInput schema / properties / corp / description

Previous value: -"Company — **a single string OR an array** (회사명·종목코드·corp_code). With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in `notes`. Compare several companies with scope=summary. A comma list (\"삼성전자,SK하이닉스\") or a bare number (259630) is absorbed too; the legacy key `corps` is accepted. Names/codes that fail to resolve are dropped with a note as long as at least one resolves (all-unresolved still errors). Omit when querying one specific filing by rcept_no instead."New value: +"회사명·종목코드·corp_code — string or array (comma list ok). scope=summary: 1 = single, 2+ = comparison (first 200 queried). scope=full: 1 only — extras dropped with a note. Unresolved entries dropped with a note; error only if none resolve. Omit with rcept_no."

changedInput schema / properties / format / description

Previous value: -"REMOVED (구 get_xbrl) — any value is rejected. markdown/markdown_full → items[] replaces them (omit this arg); raw → discontinued."New value: +"Unsupported — any value is rejected; omit. Tables come as items[]."

changedInput schema / properties / fs_div / description

Previous value: -"With scope=full, selects 연결(CFS)/별도(OFS) (default CFS). The response echoes the basis ACTUALLY used, not the requested one — a CFS→OFS auto-fallback is flagged by fs_div_note. Ignored by scope=summary — summary responses carry no top-level fs_div because consolidation is per-row there. Aliases consolidated/separate·연결/별도 also accepted (case·spaces ignored)."New value: +"scope=full·rcept_no: 연결(CFS, default)/별도(OFS). CFS without data falls back to OFS (fs_div_note) — response fs_div = basis used. Ignored by summary (basis per row)."

changedInput schema / properties / rcept_no / description

Previous value: -"14-digit 접수번호 — serves that filing AS FILED (구 get_xbrl 흡수). corp+year serves the LATEST version instead; the two can differ after a [기재정정]. **연차(사업보고서) rcept 전용** — 분·반기 XBRL 은 기간 구조(누계·단독)가 달라 corp+report 로 조회하세요(no_data 가 라우팅). Accepts fs_div·sj_div (구 sections 는 sj_div 로 흡수); corp·year·scope must be omitted. Adds 합산 검증(validations) to the response."New value: +"사업보고서 접수번호 → that filing AS FILED (later 정정 not reflected), plus 합산 검증 (validations). 분·반기 rcept → no_data; use corp+report. Combine with fs_div·sj_div; omit corp·year·scope."

changedInput schema / properties / report / description

Previous value: -"q1/half/q3/annual"New value: +"1Q·반기·3Q·연차"

changedInput schema / properties / scope / description

Previous value: -"summary (default, fast): 주요계정 — about 14 key accounts per basis (자산·부채 유동/비유동/총계, 자본금·이익잉여금·자본총계, 매출액·영업이익·법인세차감전 순이익·당기순이익·총포괄손익), 연결(CFS)·별도(OFS) rows together ≈ 28 rows per company (별도-only 14; 금융업 +α). full: the whole 재무제표 (BS/IS/CF/CIS/SCE), hundreds~1k rows"New value: +"summary (default): 주요계정 ~14 per basis (자산·부채 유동/비유동/총계, 자본금·이익잉여금·자본총계, 매출액·영업이익·법인세차감전 순이익·당기순이익·총포괄손익); 연결·별도 together ≈ 28 rows per company (별도-only 14; 금융업 +α). full: 전체 재무제표 filtered by sj_div, hundreds~1k rows."

changedInput schema / properties / sj_div / description

Previous value: -"With scope=full, filters 재무제표 종류 (when unset: BS+IS+CIS — a company using the '단일 포괄손익계산서' presentation reports 손익 in CIS only, not IS, so CIS is included by default). BS=재무상태표, IS=손익계산서, CF=현금흐름표, CIS=포괄손익계산서, SCE=자본변동표. To get everything, state [\"BS\",\"IS\",\"CF\",\"CIS\",\"SCE\"] explicitly. A bare string (\"BS\") or comma list (\"BS,IS\") is absorbed into an array."New value: +"scope=full·rcept_no: 재무제표 to include — BS=재무상태표, IS=손익계산서, CIS=포괄손익계산서, CF=현금흐름표, SCE=자본변동표. Default BS+IS+CIS (단일 포괄손익계산서 companies put 손익 in CIS only); CF·SCE only when listed. String or comma list ok."

changedInput schema / properties / year / description

Previous value: -"결산 사업연도 (회계연도). When omitted, the most recently PUBLISHED 사업연도 is selected automatically — this absorbs the validation error that used to occur when the caller left year out for a question that never named a year. Confirm the year actually used via year/year_defaulted in the response."New value: +"결산 사업연도 (회계연도, not the filing year) — one per call; annual rows also carry 전기·전전기. Omitted → latest published 사업연도 by 결산월·report (year_defaulted=true)."

Changed1 schema field changedOct 12, 2026

changedInput schema / properties / fs_div / description

Previous value: -"With scope=full, selects 연결(CFS)/별도(OFS) (default CFS). The response echoes the basis ACTUALLY used, not the requested one — a CFS→OFS auto-fallback is flagged by fs_div_note. Ignored by scope=summary — summary responses carry no top-level fs_div because consolidation is per-row there. Aliases consolidated/separate·연결/별도 also accepted."New value: +"With scope=full, selects 연결(CFS)/별도(OFS) (default CFS). The response echoes the basis ACTUALLY used, not the requested one — a CFS→OFS auto-fallback is flagged by fs_div_note. Ignored by scope=summary — summary responses carry no top-level fs_div because consolidation is per-row there. Aliases consolidated/separate·연결/별도 also accepted (case·spaces ignored)."

Changed1 schema field changedOct 7, 2026

changedInput schema / properties / scope / description

Previous value: -"summary (default): 주요계정, 8~10 rows (fast). full: the whole 재무제표 (BS/IS/CF/CIS/SCE), hundreds~1k rows"New value: +"summary (default, fast): 주요계정 — about 14 key accounts per basis (자산·부채 유동/비유동/총계, 자본금·이익잉여금·자본총계, 매출액·영업이익·법인세차감전 순이익·당기순이익·총포괄손익), 연결(CFS)·별도(OFS) rows together ≈ 28 rows per company (별도-only 14; 금융업 +α). full: the whole 재무제표 (BS/IS/CF/CIS/SCE), hundreds~1k rows"

Changed3 schema fields changedSep 2, 2026

addedInput schema / properties / corp

Added value: +{
+  "anyOf": [
+    {
+      "minLength": 1,
+      "type": "string"
+    },
+    {
+      "items": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "minItems": 1,
+      "type": "array"
+    }
+  ],
+  "description": "Company — **a single string OR an array** (회사명·종목코드·corp_code). With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in `notes`. Compare several companies with scope=summary. A comma list (\"삼성전자,SK하이닉스\") or a bare number (259630) is absorbed too; the legacy key `corps` is accepted. Names/codes that fail to resolve are dropped with a note as long as at least one resolves (all-unresolved still errors). Omit when querying one specific filing by rcept_no instead."
+}

removedInput schema / properties / corps

Removed value: -{
-  "description": "Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in `notes`. Compare several companies with scope=summary. A bare string, a comma list (\"삼성전자,SK하이닉스\") or a bare number (259630) is also absorbed into an array. Names/codes that fail to resolve are dropped with a note as long as at least one resolves (all-unresolved still errors). Omit when querying one specific filing by rcept_no instead.",
-  "items": {
-    "minLength": 1,
-    "type": "string"
-  },
-  "minItems": 1,
-  "type": "array"
-}

changedInput schema / properties / rcept_no / description

Previous value: -"14-digit 접수번호 — serves that filing AS FILED (구 get_xbrl 흡수). corp+year serves the LATEST version instead; the two can differ after a [기재정정]. **연차(사업보고서) rcept 전용** — 분·반기 XBRL 은 기간 구조(누계·단독)가 달라 corps+report 로 조회하세요(no_data 가 라우팅). Accepts fs_div·sj_div (구 sections 는 sj_div 로 흡수); corps·year·scope must be omitted. Adds 합산 검증(validations) to the response."New value: +"14-digit 접수번호 — serves that filing AS FILED (구 get_xbrl 흡수). corp+year serves the LATEST version instead; the two can differ after a [기재정정]. **연차(사업보고서) rcept 전용** — 분·반기 XBRL 은 기간 구조(누계·단독)가 달라 corp+report 로 조회하세요(no_data 가 라우팅). Accepts fs_div·sj_div (구 sections 는 sj_div 로 흡수); corp·year·scope must be omitted. Adds 합산 검증(validations) to the response."

Changed2 schema fields changedAug 31, 2026

changedInput schema / properties / corps / description

Previous value: -"Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in `notes`. Compare several companies with scope=summary. A bare string or a comma list (\"삼성전자,SK하이닉스\") is also absorbed into an array. Omit when querying one specific filing by rcept_no instead."New value: +"Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in `notes`. Compare several companies with scope=summary. A bare string, a comma list (\"삼성전자,SK하이닉스\") or a bare number (259630) is also absorbed into an array. Names/codes that fail to resolve are dropped with a note as long as at least one resolves (all-unresolved still errors). Omit when querying one specific filing by rcept_no instead."

changedInput schema / properties / sj_div / description

Previous value: -"With scope=full, filters 재무제표 종류 (when unset: BS+IS+CIS — a company using the '단일 포괄손익계산서' presentation reports 손익 in CIS only, not IS, so CIS is included by default). BS=재무상태표, IS=손익계산서, CF=현금흐름표, CIS=포괄손익계산서, SCE=자본변동표. To get everything, state [\"BS\",\"IS\",\"CF\",\"CIS\",\"SCE\"] explicitly."New value: +"With scope=full, filters 재무제표 종류 (when unset: BS+IS+CIS — a company using the '단일 포괄손익계산서' presentation reports 손익 in CIS only, not IS, so CIS is included by default). BS=재무상태표, IS=손익계산서, CF=현금흐름표, CIS=포괄손익계산서, SCE=자본변동표. To get everything, state [\"BS\",\"IS\",\"CF\",\"CIS\",\"SCE\"] explicitly. A bare string (\"BS\") or comma list (\"BS,IS\") is absorbed into an array."

Changed1 schema field changedAug 29, 2026

changedInput schema / properties / corps / description

Previous value: -"Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in a `warning` field. Compare several companies with scope=summary. A bare string or a comma list (\"삼성전자,SK하이닉스\") is also absorbed into an array. Omit when querying one specific filing by rcept_no instead."New value: +"Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in `notes`. Compare several companies with scope=summary. A bare string or a comma list (\"삼성전자,SK하이닉스\") is also absorbed into an array. Omit when querying one specific filing by rcept_no instead."

Changed7 schema fields changedAug 25, 2026

changedInput schema / properties / corps / description

Previous value: -"Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in a `warning` field. Compare several companies with scope=summary. A bare string or a comma list (\"삼성전자,SK하이닉스\") is also absorbed into an array."New value: +"Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in a `warning` field. Compare several companies with scope=summary. A bare string or a comma list (\"삼성전자,SK하이닉스\") is also absorbed into an array. Omit when querying one specific filing by rcept_no instead."

addedInput schema / properties / format

Added value: +{
+  "description": "REMOVED (구 get_xbrl) — any value is rejected. markdown/markdown_full → items[] replaces them (omit this arg); raw → discontinued.",
+  "type": "string"
+}

addedInput schema / properties / rcept_no

Added value: +{
+  "description": "14-digit 접수번호 — serves that filing AS FILED (구 get_xbrl 흡수). corp+year serves the LATEST version instead; the two can differ after a [기재정정]. **연차(사업보고서) rcept 전용** — 분·반기 XBRL 은 기간 구조(누계·단독)가 달라 corps+report 로 조회하세요(no_data 가 라우팅). Accepts fs_div·sj_div (구 sections 는 sj_div 로 흡수); corps·year·scope must be omitted. Adds 합산 검증(validations) to the response.",
+  "pattern": "^\\d{14}$",
+  "type": "string"
+}

removedInput schema / properties / scope / default
```
Removed value: -"summary"
```

changedInput schema / properties / scope / description

Previous value: -"summary: 주요계정, 8~10 rows (fast). full: the whole 재무제표 (BS/IS/CF/CIS/SCE), hundreds~1k rows"New value: +"summary (default): 주요계정, 8~10 rows (fast). full: the whole 재무제표 (BS/IS/CF/CIS/SCE), hundreds~1k rows"

addedInput schema / properties / sj_div / minItems
```
Added value: +1
```
removedInput schema / required
```
Removed value: -[
-  "corps"
-]
```

Changed2 schema fields changedAug 14, 2026

changedInput schema / properties / corps / description

Previous value: -"Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API). Compare several companies with scope=summary. A bare string or a comma list (\"삼성전자,SK하이닉스\") is also absorbed into an array."New value: +"Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API) and the drop is reported in a `warning` field. Compare several companies with scope=summary. A bare string or a comma list (\"삼성전자,SK하이닉스\") is also absorbed into an array."

changedInput schema / properties / fs_div / description

Previous value: -"With scope=full, selects 연결(CFS)/별도(OFS) (default CFS). Aliases consolidated/separate·연결/별도 also accepted."New value: +"With scope=full, selects 연결(CFS)/별도(OFS) (default CFS). The response echoes the basis ACTUALLY used, not the requested one — a CFS→OFS auto-fallback is flagged by fs_div_note. Ignored by scope=summary — summary responses carry no top-level fs_div because consolidation is per-row there. Aliases consolidated/separate·연결/별도 also accepted."

Changed5 schema fields changedAug 13, 2026

changedInput schema / properties / corps / description

Previous value: -"회사 배열. scope=summary 면 1개(단일) 또는 2+(다중사 비교). scope=full 은 반드시 1개만 — 2개 이상 주면 첫 회사만 반환되고 나머지는 무시됩니다(다중사 전체 재무제표 API 없음). 여러 회사 비교는 scope=summary 로. 단일 문자열이나 콤마 나열(\"삼성전자,SK하이닉스\")도 배열로 흡수합니다."New value: +"Array of companies. With scope=summary: 1 (single) or 2+ (multi-company comparison). scope=full takes EXACTLY 1 — give 2 or more and only the first is returned, the rest are dropped (there is no multi-company full-statement API). Compare several companies with scope=summary. A bare string or a comma list (\"삼성전자,SK하이닉스\") is also absorbed into an array."

changedInput schema / properties / fs_div / description

Previous value: -"scope=full 시 연결(CFS)/별도(OFS) 선택(기본 CFS). consolidated/separate·연결/별도 별칭도 허용."New value: +"With scope=full, selects 연결(CFS)/별도(OFS) (default CFS). Aliases consolidated/separate·연결/별도 also accepted."

changedInput schema / properties / scope / description

Previous value: -"summary: 주요계정 8~10행 (빠름). full: 전체 재무제표(BS/IS/CF/CIS/SCE) 수백~천여 행"New value: +"summary: 주요계정, 8~10 rows (fast). full: the whole 재무제표 (BS/IS/CF/CIS/SCE), hundreds~1k rows"

changedInput schema / properties / sj_div / description

Previous value: -"scope=full 시 재무제표 종류 필터 (미지정 시 BS+IS+CIS — '단일 포괄손익계산서' 채택사는 손익이 IS 가 아니라 CIS 에만 있어 CIS 를 기본 포함). BS=재무상태표, IS=손익계산서, CF=현금흐름표, CIS=포괄손익계산서, SCE=자본변동표. 전체 받으려면 [\"BS\",\"IS\",\"CF\",\"CIS\",\"SCE\"] 명시."New value: +"With scope=full, filters 재무제표 종류 (when unset: BS+IS+CIS — a company using the '단일 포괄손익계산서' presentation reports 손익 in CIS only, not IS, so CIS is included by default). BS=재무상태표, IS=손익계산서, CF=현금흐름표, CIS=포괄손익계산서, SCE=자본변동표. To get everything, state [\"BS\",\"IS\",\"CF\",\"CIS\",\"SCE\"] explicitly."

changedInput schema / properties / year / description

Previous value: -"결산 사업연도(회계연도). 생략하면 가장 최근 '공시된' 사업연도로 자동 지정합니다 — 연도를 안 물은 질문에서 LLM 이 year 를 빠뜨려 검증 에러가 나던 것을 흡수합니다. 응답의 year/year_defaulted 로 실제 사용 연도를 확인하세요."New value: +"결산 사업연도 (회계연도). When omitted, the most recently PUBLISHED 사업연도 is selected automatically — this absorbs the validation error that used to occur when the caller left year out for a question that never named a year. Confirm the year actually used via year/year_defaulted in the response."

First observedAug 13, 2026

TDQS

A4.8/5.0

Behavior5/5

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

Annotations already carry readOnly/idempotent/destructive hints, yet the description adds substantial non-obvious behavior: amounts are STRINGS, cumulative-vs-quarter semantics differ per statement type (IS/CIS CUMULATIVE = thstrm_add_amount, CF already YTD, BS single-period), CFS→OFS fallback with fs_div_note, and the 정정-반영 vs AS-FILED distinction between corp+year and rcept_no. These are exactly the traits an agent needs and none are in the annotations.

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-loaded with a one-line summary followed by labeled [Purpose]/[Usage]/[Response]/[Rules] sections that make it scannable despite its length. It is denser than necessary and repeats some schema content (sj_div expansions, format rejection), but every section carries usable information and there is no filler.

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?

No output schema exists, and the description compensates fully by naming the row keys (sj_div, account_nm, thstrm_amount, frmtrm_*, bfefrmtrm_*, thstrm_add_amount) and explaining total_count vs count semantics. Combined with the routing rule for no_data and the period legend caveat, an agent has everything needed to call and interpret this tool.

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%, so the baseline is 3, but the description earns above baseline by adding cross-parameter semantics the schema lacks: corp+year returns the LATEST filing with 정정 applied while rcept_no returns the filing AS FILED, year means 결산 사업연도 not filing year, and format is rejected outright. Much of the sj_div/scope text does restate schema enums, so it is not a full 5.

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 (재무수치 조회) and enumerates the exact figures covered (매출·영업이익·순이익·자산/부채/자본). It explicitly scopes itself against siblings by naming download_document for 사업보고서 prose and get_going_concern for 부실징후, so an agent can route without opening schemas.

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?

Gives three concrete query→parameter mappings (single corp+year, comparison via array, as-filed via rcept_no) and explicitly states that '재무 질문 대부분은 이걸로 충분합니다.' The [Rules] section adds the no_data-is-routing-not-error escape hatch, which is genuine when-to-use guidance.

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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