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- ✓ Shell / process execution No
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- ● Dynamic code execution Used
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Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
ClinicalTrials.gov API v2 实时检索
封装 ClinicalTrials.gov 官方 API v2,为医学证据检索体系提供"实时官方源"原子能力。
0. Auto-Trigger 示例
| 用户 prompt | 应触发 | 原因 | |---|---|---| | "我要查血液科 IFI 相关的招募中临床试验" | ✅ clinical-trials-v2 | 实时招募状态查询 | | "BTK 抑制剂的 Phase 3 试验有哪些" | ✅ clinical-trials-v2 | intervention + phase 过滤 | | "给我所有近 5 年完成的曲霉病试验的 results 数据" | ✅ clinical-trials-v2 (get_study_outcomes) | 主次终点 + 已发布结果 | | "NCT04368728 现在到哪一阶段了" | ✅ clinical-trials-v2 (get_study_details) | 单 NCT 详情 | | "我要批量分析过去 10 年血液病所有试验" | ❌ → aact-bulk-trials | 全量 SQL,本地镜像 | | "找 PubMed 上 RCT 文献" | ❌ → pubmed-eutils | 文献库非试验注册 | | "这条 RCT 的证据等级是 A 还是 B" | ❌ → medical-evidence-grading (上层调用本 skill) | GRADE 评级编排 |
1. 定位与边界
只做
- 通过
https://clinicaltrials.gov/api/v2/studies实时检索单个/批量试验 - 单次请求 ≤ 1000 条记录
- 返回完整 protocol + results 模块结构化数据
不做(显式委托)
| 任务 | 委托给 | 关系 | |---|---|---| | 大批量历史分析 (>10k / 全库 SQL) | aact-bulk-trials | 互补:批量·SQL·历史全量 vs 本 skill 实时·单查·≤1000 | | 关联 PubMed 文献 / NCT→PMID | pubmed-eutils | 上游:文献检索后取 NCT 详情 | | RCT 证据等级 GRADE A/B/C/D | medical-evidence-grading | 上层:它编排本 skill 提取 RCT 元数据后评级 | | 引文落入报告附录 C | evidence-appendix-sync | 终下游:source_url + NCT 直接落参考文献表 | | 全文 XML 解析 | bioc-fulltext-fetch | 不重叠 | | 系统综述 PRISMA 编排 | systematic-review | 不重叠 |
与 aact-bulk-trials 详细对比
| 维度 | clinical-trials-v2 (本 skill) | aact-bulk-trials | |---|---|---| | 数据源 | 实时 API | 每日同步的 PostgreSQL 镜像 | | 单次规模 | ≤1000 条 | 无限(SQL JOIN 全表) | | 延迟 | 实时 (T+0) | T-1 | | 查询能力 | REST query DSL | 完整 SQL | | 适用场景 | 单试验最新状态 / 小批量招募检索 | 全库统计 / 历史趋势 / 多表 JOIN | | 速率限制 | 建议 ≤5 RPS | 仅本地 IO |
跨平台无锁声明
本 skill 仅依赖标准 HTTP + Python stdlib + httpx,无任何 Claude Code / Codex / Cursor 平台特定 API。可直接在三平台间迁移。
2. 认证与速率
无需 API key
ClinicalTrials.gov API v2 是开放 API,无需注册或 API key。
建议 User-Agent
HEADERS = {
"User-Agent": "ClinicalTrialsV2-Skill/1.0 (medical-evidence-retrieval; contact@example.com)",
"Accept": "application/json",
}
速率限制
- 官方未强制 RPS 限制,但建议自约束 ≤5 RPS
- 实现指数退避: 429/503 → 退避 2^n * 0.5s, 最多 5 次重试
3. 安装与依赖
pip install httpx tenacity pydantic
仅依赖标准 HTTP 客户端,无需特殊 SDK。
4. 核心 API 设计
统一返回 dataclass
from dataclasses import dataclass, field
from typing import Optional
@dataclass
class TrialRecord:
nct_id: str
title: dict # {"brief": str, "official": str}
status: str # RECRUITING / ACTIVE_NOT_RECRUITING / COMPLETED / ...
phase: list[str] # ["PHASE2", "PHASE3"]
study_type: str # INTERVENTIONAL / OBSERVATIONAL / EXPANDED_ACCESS
condition: list[str]
intervention: list[dict] # [{"type": "DRUG", "name": "Pembrolizumab"}]
sponsor: dict # {"lead": str, "class": "INDUSTRY"|"NIH"|...}
enrollment: Optional[int]
enrollment_type: Optional[str] # ACTUAL / ESTIMATED
start_date: Optional[str]
completion_date: Optional[str]
primary_outcomes: list[dict] # [{"measure": str, "time_frame": str}]
locations: list[dict] # [{"facility": str, "city": str, "country": str, "status": str}]
has_results: bool
last_update_posted: Optional[str]
source_url: str = field(init=False)
def __post_init__(self):
self.source_url = f"https://clinicaltrials.gov/study/{self.nct_id}"
5 个核心检索函数
4.1 search_studies(query, filters)
综合检索入口,支持自由文本 + 结构化过滤器组合。
def search_studies(
query: str,
*,
recruitment_status: list[str] | None = None, # ["RECRUITING", "ACTIVE_NOT_RECRUITING"]
phase: list[str] | None = None, # ["PHASE2", "PHASE3"]
study_type: str | None = None, # "INTERVENTIONAL"
country: str | None = None,
sponsor: str | None = None,
date_from: str | None = None, # "2023-01-01"
date_to: str | None = None,
page_size: int = 100, # ≤1000
max_results: int = 500,
) -> list[TrialRecord]:
"""组合查询。query 走 query.term,过滤器映射到 filter.* 参数。"""
4.2 get_study_details(nct_id)
按 NCT ID 获取完整 protocol + results。
def get_study_details(nct_id: str) -> TrialRecord:
"""GET /api/v2/studies/{nct_id}?format=json"""
4.3 search_by_condition(condition_term, ...)
疾病专项检索,内部映射到 query.cond。
def search_by_condition(
condition_term: str, # "Multiple Myeloma" / "AML"
*,
status: list[str] | None = None,
phase: list[str] | None = None,
country: str | None = None,
max_results: int = 200,
) -> list[TrialRecord]:
4.4 search_by_intervention(intervention_term, intervention_type)
干预专项检索,映射到 query.intr。
def search_by_intervention(
intervention_term: str, # "Pembrolizumab" / "CAR-T"
intervention_type: str | None = None, # "DRUG"|"DEVICE"|"BEHAVIORAL"|"BIOLOGICAL"
*,
status: list[str] | None = None,
max_results: int = 200,
) -> list[TrialRecord]:
4.5 get_study_outcomes(nct_id)
专取主/次要终点 + 已发布结果(若 hasResults=True)。
def get_study_outcomes(nct_id: str) -> dict:
"""
返回:
{
"primary_outcomes": [...],
"secondary_outcomes": [...],
"has_results": bool,
"results": {...} | None, # outcomeMeasuresModule + adverseEventsModule
}
"""
5. 参数化过滤器枚举(精简)
最常用的 4 类枚举值速查;完整枚举 + 端点字段清单 + DSL 语法见 [references/enums-and-endpoints.md](references/enums-and-endpoints.md)。
| 类型 | 常用值 | |---|---| | recruitmentstatus | RECRUITING · ACTIVE_NOT_RECRUITING · COMPLETED · TERMINATED (完整 9 值见 references) | | phase | PHASE1 · PHASE2 · PHASE3 · PHASE4 (+ EARLY_PHASE1 / NA) | | studytype | INTERVENTIONAL · OBSERVATIONAL · EXPANDED_ACCESS | | intervention_type | DRUG · DEVICE · BIOLOGICAL · BEHAVIORAL (完整 11 值见 references) |
6. API v2 端点映射(精简)
| 函数 | HTTP | 关键参数 | |---|---|---| | searchstudies | GET /api/v2/studies | query.term + filter.* | | getstudydetails | GET /api/v2/studies/{nctid} | format=json | | searchbycondition | GET /api/v2/studies | query.cond | | searchbyintervention | GET /api/v2/studies | query.intr | | getstudyoutcomes | GET /api/v2/studies/{nct_id} | fields=outcomesModule,resultsSection |
完整字段映射 + 分页 (pageToken) + fields= 裁剪语法详见 references。
7. 标准请求示例
import httpx
BASE = "https://clinicaltrials.gov/api/v2/studies"
def _fetch(params: dict) -> dict:
with httpx.Client(headers=HEADERS, timeout=30.0) as client:
r = client.get(BASE, params=params)
r.raise_for_status()
return r.json()
# 示例: 检索"多发性骨髓瘤 + PHASE3 + RECRUITING"
data = _fetch({
"query.cond": "Multiple Myeloma",
"filter.overallStatus": "RECRUITING",
"filter.phase": "PHASE3",
"pageSize": 100,
"format": "json",
})
8. 失败模式与处理(必读)
| # | 失败模式 | 触发条件 | 处理策略 | |---|---|---|---| | 1 | API rate limit | 单 IP > 5 RPS,返回 429/503 | tenacity 指数退避 (0.5s × 2^n,上限 8s,最多 5 次);批量任务建议 sleep(0.25) 节流 | | 2 | NCT ID 格式错误 | 非 ^NCT\d{8}$ (例如 NCT123 / nct04368728) | validate_nct_id() 上游校验,直接抛 InvalidNCTIdError,不发请求 | | 3 | 试验未发布 results | hasResults=False 或 resultsSection 缺失子模块 | get_study_outcomes 优雅降级,返回 {"has_results": False, "results": None},不抛错 | | 4 | query DSL 解析错 | query.term 含未转义括号/AND-OR 优先级错,API 返回 400 | 抛 InvalidQueryError,记录原 query,提示用户使用 search_by_condition / search_by_intervention 而非 raw query | | 5 | 国家/地点过滤模糊匹配失败 | filter.locStr=Beijing 漏掉 "Peking"/"Beijing, China" | 文档说明使用 ISO 国家码或 query.locn,提供常见城市同义词表(见 references) | | 6 | NCT 不存在 (404) | 已撤回或拼写错 | 抛 TrialNotFoundError,不重试 | | 7 | status 字段滞后真实情况 | sponsor 自报,可能仍标 RECRUITING 但实际已停 | 严肃决策需交叉验证 last_update_posted 并提示用户 |
from tenacity import retry, stop_after_attempt, wait_exponential, retry_if_exception_type
import re
NCT_PATTERN = re.compile(r"^NCT\d{8}$")
def validate_nct_id(nct_id: str) -> str:
if not NCT_PATTERN.match(nct_id):
raise InvalidNCTIdError(f"非法 NCT ID: {nct_id!r},应为 NCT + 8 位数字")
return nct_id
@retry(
stop=stop_after_attempt(5),
wait=wait_exponential(multiplier=0.5, min=0.5, max=8),
retry=retry_if_exception_type((httpx.HTTPStatusError, httpx.TimeoutException)),
reraise=True,
)
def _fetch_with_retry(params: dict) -> dict:
...
9. 输出规范
- 永远返回结构化 dataclass,不返回 raw JSON
source_url字段供下游引文用- list 字段空值用
[]而非None - 日期统一
YYYY-MM-DD字符串(原始 API 可能返回YYYY-MM,前端补-01)
10. 跨 Skill 协作链(显式)
[pubmed-eutils] (上游: 文献找到 PMID, elink 拿到 NCT)
│
▼
[clinical-trials-v2] ←─ 本 skill (单查 ≤1000 / 实时)
│
├──→ [aact-bulk-trials] (互补: 大批量历史时切换)
│
├──→ [medical-evidence-grading] (上层: RCT 自动评 GRADE A)
│ │
│ ▼
└──→ [evidence-appendix-sync] (终下游: 落 NCT 到附录 C)
与 medical-evidence-grading 集成
# medical-evidence-grading 调用本 skill 提取 RCT 元数据
trial = get_study_details("NCT04368728")
grade_input = {
"study_type": trial.study_type, # INTERVENTIONAL
"phase": trial.phase, # ["PHASE3"]
"enrollment": trial.enrollment, # 样本量
"has_results": trial.has_results,
"primary_outcomes": trial.primary_outcomes,
}
# → grading skill 判定 RCT + Phase 3 + 样本 ≥1000 → GRADE A
与 evidence-appendix-sync 集成
for trial in search_studies("CAR-T", recruitment_status=["RECRUITING"]):
appendix.add_reference({
"type": "clinical_trial",
"id": trial.nct_id, # NCT04368728
"title": trial.title["official"] or trial.title["brief"],
"url": trial.source_url, # https://clinicaltrials.gov/study/NCT...
"accessed": today_iso(),
})
与 pubmed-eutils 上游集成
# 1) PubMed 文献 → NCT
nct_ids = pubmed_eutils.elink(pmids=["38123456"], db="clinicaltrials")
# 2) 取试验详情
trials = [get_study_details(nct) for nct in nct_ids]
11. 测试清单
- [ ]
get_study_details("NCT04368728")返回 BNT162b2 完整 protocol - [ ]
search_by_condition("Acute Myeloid Leukemia", status=["RECRUITING"])≥10 条 - [ ]
search_by_intervention("Pembrolizumab", "DRUG")返回 KEYNOTE 系列 - [ ]
get_study_outcomes("NCT00000000")对未发布结果试验返回has_results=False - [ ] 不存在的 NCT 触发
TrialNotFoundError - [ ] 5 次连续 429 后正确退避并最终返回结果
- [ ] 分页超过 1000 条时使用 pageToken 自动续取
12. 限制与注意
- API v2 已替代 v1(2024-06 起 v1 deprecated),本 skill 仅使用 v2
hasResults=True不代表所有 endpoint 已发布;需检查resultsSection各子模块locations数组可能极大(国际多中心试验 >500 站点),按需用fields参数裁剪- 单次 ≥1000 条请用
aact-bulk-trials改走本地镜像 - 试验 status 字段可能滞后真实招募情况(由 sponsor 自报),严肃决策需交叉验证
- 不要把本 skill 用于"导出全库做统计"——会被识别为滥用模式
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: EthanYoQ
- Source: EthanYoQ/Skill-hub
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.