# 艾达 ADA

> Free APIs for AI agents: web reading, text slicing, clock, ID keys, 1MB memory. No signup or fees.

- name: group.hengyu.ai/ada
- version: 0.1.0
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 60/100 (needs work)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/group.hengyu.ai%2Fada
- tools: https://api.protogrid.dev/v1/servers/group.hengyu.ai%2Fada/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "ada": {
      "type": "http",
      "url": "https://ai.hengyu.group/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-17d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 60/100 (needs work)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 64 (weight 30)

- warn `tools.descriptions`: 3 of 11 tools have a description under 20 characters
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: text_slice (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); clock_now (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); id_attest (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 684 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 25 (weight 15)

- warn `stability.changes`: 13 tool changes in 30 days
- fail `stability.rug_pull`: 1 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 11, about 684 tokens to load them all
- tool set hash: 5dc1521b1e04bf96d164bd1122a30591
- tools last changed: 2026-10-10T10:46:31.599Z
- badge: [![protogrid quality](https://protogrid.dev/badge/group.hengyu.ai/ada.svg)](https://protogrid.dev/servers/group.hengyu.ai/ada)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-10 `shelf_put` changed (description) **meaning changed**
  - before: 把加工好的成品放回公共仓库（免注册、免密钥，自报一个标识记功劳）。同一份全库只有一条，谁先放算谁的。
  - after: 把加工好的成品放回公共仓库（免注册、免密钥，带一个 source 标识）。同一份全库只保留一条。
- 2026-10-10 `shelf_get` changed (description)
  - before: 取公共仓库里的成品（带来源与时间）。库里没有且给了网址，会现取现加工、顺手进库。
  - after: 取公共仓库里的成品（带来源与时间）。库里没有且给了网址，会实时加工并写回库内。
- 2026-10-04 `shelf_put` added
  - 把加工好的成品放回公共仓库（免注册、免密钥，自报一个标识记功劳）。同一份全库只有一条，谁先放算谁的。
- 2026-10-04 `shelf_get` added
  - 取公共仓库里的成品（带来源与时间）。库里没有且给了网址，会现取现加工、顺手进库。
- 2026-10-04 `shelf_find` added
  - 查公共仓库里有没有这一份：给关键词或网址，回谁什么时候放的。只回元数据，不计被取次数。
- 2026-10-04 `memory_delete` changed (description)
  - before: 删掉你记忆柜里的一条。
  - after: 删除键值存储中的一条。
- 2026-10-04 `memory_list` changed (description)
  - before: 列出你记忆柜里的格子（可按前缀）。
  - after: 列出键值存储中的键（支持前缀）。
- 2026-10-04 `memory_get` changed (description)
  - before: 从你的记忆柜取一条。
  - after: 从键值存储读取一条。
- 2026-10-04 `memory_put` changed (description, inputSchema)
  - before: 往你自己的记忆柜存一条（每个 agent 1MB，只有你的钥匙能开）。
  - after: 写入键值存储（每 Agent 1MB，仅持密钥者可读写）。
- 2026-10-04 `id_attest` changed (description)
  - before: 验一个 Ed25519 签名：这段话确实是这把钥匙的主人签的。
  - after: 校验 Ed25519 签名，验证消息是否由该公钥持有者签发。

Full history: https://api.protogrid.dev/v1/servers/group.hengyu.ai%2Fada/changes

## Remotes

- https://ai.hengyu.group/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (11)

- `clock_now`: 返回标准时间（广州 UTC+8，已 NTP 校时）。
- `id_attest`: 校验 Ed25519 签名，验证消息是否由该公钥持有者签发。
- `memory_delete`: 删除键值存储中的一条。
- `memory_get`: 从键值存储读取一条。
- `memory_list`: 列出键值存储中的键（支持前缀）。
- `memory_put`: 写入键值存储（每 Agent 1MB，仅持密钥者可读写）。
- `shelf_find`: 查公共仓库里有没有这一份：给关键词或网址，回谁什么时候放的。只回元数据，不计被取次数。
- `shelf_get`: 取公共仓库里的成品（带来源与时间）。库里没有且给了网址，会实时加工并写回库内。
- `shelf_put`: 把加工好的成品放回公共仓库（免注册、免密钥，带一个 source 标识）。同一份全库只保留一条。
- `text_slice`: 长文本检索：传入原文或网址 + 关键词，仅返回带行号的相关行，节省 token。
- `web_read`: 读取网页正文。全站共享缓存：命中缓存即时返回，节省 token。