Agent skill

Knowledge Tool Contracts And Registry

by echoVic in echoVic/blade-code

Covers Blade 的 Tool/ToolInvocation/ToolResult 契约、createTool 工厂、TypeBox 参数边界、ToolRegistry、延迟工具发现与通用 Session 制品存储。

MITAuto-check passedAgent Workflows

Install Knowledge Tool Contracts And Registry

skills CLI
$ npx skills add echoVic/blade-code --skill knowledge-tool-contracts-and-registry -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install echoVic/blade-code knowledge-tool-contracts-and-registry --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/echoVic/blade-code.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.trae/knowledges/tool-and-automation-platform/tool-contracts-and-registry .claude/skills/knowledge-tool-contracts-and-registry && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
knowledge-tool-contracts-and-registry
GitHub stars
181
Token cost
~1.9k tokens
SKILL.md length
391 words
Files
1
Skills in repo
38
Repo updated
First seen
Licence
MIT

At a glance

Covers Blade 的 Tool/ToolInvocation/ToolResult 契约、createTool 工厂、TypeBox 参数边界、ToolRegistry、延迟工具发现与通用 Session 制品存储。

  • Tasks that involve MCP servers
  • SKILL.md covers Module Structure, API Surface, Usage Examples and Gotchas, plus 4 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Knowledge Tool Contracts And Registry is an agent skill from echoVic/blade-code. Covers Blade 的 Tool/ToolInvocation/ToolResult 契约、createTool 工厂、TypeBox 参数边界、ToolRegistry、延迟工具发现与通用 Session 制品存储。 Navigate when: 定义新工具字段、修改 schema 转换或校验、调整工具注册/搜索/MCP 目录、排查 metadata 或 deferred tool 可见性。 Excludes: 实际执行阶段与重试循环(见 ../tool-execution-pipeline/)、具体领域工具行为(见相邻子节点)。 Keywords: ToolConfig, ToolKind, ToolResult, UnifiedToolInvocation, createTool, ToolRegistry, DeferredToolManager, TypeBox, schemaToFunctionSchema, SessionArtifactStore.

Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows, covering MCP servers. It works with Model Context Protocol. The repository describes itself as: AI-powered CLI coding agent with 20+ built-in tools, MCP support, and multi-model providers. The licence is MIT.

When your agent uses it

  • Tasks that involve MCP servers

Example prompts

  • “Use the knowledge-tool-contracts-and-registry skill to cover Blade 的 Tool/ToolInvocation/ToolResult 契约、createTool 工厂、TypeBox…”
  • “/knowledge-tool-contracts-and-registry”

What it can do on your machine

Read from SKILL.md and the folder at commit 30f8684. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Knowledge Tool Contracts And Registry loads about 1.9k tokens when it runs. Until then it costs about 120 tokens; SKILL.md has 391 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~120
When it runs · the whole SKILL.md, loaded when a task matches
~1.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from echoVic/blade-code at commit 30f8684, republished under its MIT licence (© echoVic). 391 words, ~1,920 tokens.

Download SKILL.mdSave it as .claude/skills/knowledge-tool-contracts-and-registry/SKILL.md (or your agent's skills folder).
name
knowledge-tool-contracts-and-registry
description
Covers Blade 的 Tool/ToolInvocation/ToolResult 契约、createTool 工厂、TypeBox 参数边界、ToolRegistry、延迟工具发现与通用 Session 制品存储。 Navigate when: 定义新工具字段、修改 schema 转换或校验、调整工具注册/搜索/MCP 目录、排查 metadata 或 deferred tool 可见性。 Excludes: 实际执行阶段与重试循环(见 ../tool-execution-pipeline/)、具体领域工具行为(见相邻子节点)。 Keywords: ToolConfig, ToolKind, ToolResult, UnifiedToolInvocation, createTool, ToolRegistry, DeferredToolManager, TypeBox, schemaToFunctionSchema, SessionArtifactStore.

Module Structure

该组件是所有内置工具、MCP 工具和 Agent 表面的共享契约层。工具定义在这里被校验并 投影为 Provider function schema,注册表再决定哪些声明进入当前模型上下文。

Directory Layout
  • packages/cli/src/tools/core/ — createTool 与 UnifiedToolInvocation
  • packages/cli/src/tools/types/ — 工具、结果、metadata、权限和执行上下文类型
  • packages/cli/src/tools/validation/ — TypeBox 校验、JSON Schema 投影和敏感文件识别
  • packages/cli/src/tools/registry/ — 内置/MCP 注册、索引、事件和延迟加载状态
  • packages/cli/src/tools/artifacts/ — 有界、私有、内容寻址的 Session 制品存储
Key Entry Points
  • createTool() in packages/cli/src/tools/core/createTool.ts — 从 ToolConfig 构造完整工具对象
  • ToolRegistry in packages/cli/src/tools/registry/ToolRegistry.ts — 注册、筛选、克隆和投影工具目录
  • DeferredToolManager.filterDeclarations() in packages/cli/src/tools/registry/DeferredToolManager.ts — 只向模型暴露已加载 schema
  • parseToolSchema() in packages/cli/src/tools/validation/schemaErrorFormatter.ts — 构建 invocation 前执行 TypeBox 运行时校验
  • SessionArtifactStore in packages/cli/src/tools/artifacts/SessionArtifactStore.ts — MCP 与 Browser 共用的私有制品原语

API Surface

createTool
  • createTool(config) — 绑定 TypeBox schema、描述、权限签名、并发/重试能力和执行函数,并返回 Tool
  • Tool.build(params) — 先解析默认值并拒绝无效输入,再创建不可变参数的 ToolInvocation
  • Tool.getFunctionDeclaration() — 将内部 schema 和多段描述转换为 Provider function declaration
  • Tool.getMetadata() — 暴露工具目录元数据,包括显式归一化后的 isRetrySafe 与 parallelism
ToolRegistry
  • register() / registerAll() — 注册内置工具并同步分类、标签和 deferred 状态
  • replaceMcpTools() — 原子替换动态 MCP 目录并保留内置名称冲突保护
  • getFunctionDeclarationsByMode() — 组合 Plan 模式过滤与 deferred schema 过滤
  • clone() — 共享工具对象但重新建立注册表、索引与 deferred 状态
  • drainMcp*() — 以有界队列向 Agent loop 交付 MCP 目录、内容、连接、日志和任务变化
DeferredToolManager
  • register() / syncDynamicTools() — 维护立即加载与延迟加载集合
  • markLoaded() — 在 ToolSearch 成功后把完整 schema 纳入后续 Provider 请求
  • getDeferredToolsListing() — 生成按名称排序的 <available-deferred-tools> 提示片段
SessionArtifactStore
  • write() — 校验单件/Session 配额,以 SHA-256 为 ID 写入 0600 文件并去重
  • removeAll() — 删除一个 Session namespace 并重置内存计数

Usage Examples

定义一个可安全重放的查询工具
typescript
const tool = createTool({
  name: 'Read',
  kind: ToolKind.ReadOnly,
  isConcurrencySafe: true,
  isRetrySafe: true,
  schema: Type.Object({ file_path: ToolSchemas.filePath() }),
  execute: async (params, context) => read(params, context),
});
注册 Session 工具并投影动态 MCP 目录
typescript
this.baseRegistry.registerAll(builtin);
this.baseRegistry.replaceMcpTools(registry.getCatalogSnapshot().tools);
this.baseRegistry.registerAll(createMcpContentTools(registry));
this.baseRegistry.registerAll(createMcpTaskTools(registry));

Gotchas

  • ToolKind.ReadOnly 不表示语义幂等;CreateGoal、TaskCreate 等会改变持久状态但仍为 Plan 可用的 ReadOnly,重试资格必须单独显式声明 (packages/cli/src/tools/types/ToolTypes.ts, packages/cli/src/tools/builtin/goal/goalTools.ts, packages/cli/src/tools/builtin/task/taskListTools.ts)
  • isConcurrencySafe 默认 false,parallelism 默认随它选择 shared/exclusive;显式 parallelism: 'shared' 可允许不同调用进入批内共享门,但 isConcurrencySafe: false 仍会启用同路径文件锁和禁止流式预启动 (packages/cli/src/tools/core/createTool.ts, packages/cli/src/tools/execution/ToolExecutor.ts, packages/cli/src/agent/loop/StreamingToolExecutor.ts)
  • isRetrySafe 在 config、tool、metadata 和 invocation 四处传播且默认 false;新增工具若漏写不会自动重放,这是有意的 fail-closed 契约 (packages/cli/src/tools/core/createTool.ts, packages/cli/src/tools/core/ToolInvocation.ts, packages/cli/src/tools/types/ToolTypes.ts)
  • Tool.build() 已经执行 TypeBox 校验与默认值注入,Hook 修改参数后必须重新 build,不能继续执行旧 invocation (packages/cli/src/tools/core/createTool.ts, packages/cli/src/tools/execution/ToolExecutionHooks.ts)
  • ToolRegistry.registerAll() 逐个注册后才聚合错误,不提供批次回滚;调用方不应把失败批量注册视为零副作用 (packages/cli/src/tools/registry/ToolRegistry.ts)
  • 内置工具名优先于 MCP 工具名;动态 MCP 替换遇到内置冲突或批内重名会直接失败,而同名已有 MCP 工具可被新目录覆盖 (packages/cli/src/tools/registry/ToolRegistry.ts)
  • clone() 共享 Tool 实例,但 deferred 加载集合和待排出的 MCP 事件不是原对象的副本;每个执行器目录需独立经历 ToolSearch 与变化投影 (packages/cli/src/tools/registry/ToolRegistry.ts)
  • TypeBox 转 Provider JSON Schema 时会递归移除 ~ 运行时注解,并为对象补 required: [] 与 additionalProperties: false;直接序列化 TypeBox schema 会产生不同契约 (packages/cli/src/tools/validation/schemaToJson.ts)
  • SessionArtifactStore 发现已有同 hash 文件时会重新校验 owner、0600、大小和内容哈希,权限漂移不会被当作正常去重命中 (packages/cli/src/tools/artifacts/SessionArtifactStore.ts)
Show full SKILL.md (150 more words)Show less

Architecture

  • 工具对象同时服务三类消费者:Provider 获取 function declaration,执行器构建 invocation,UI/Server 读取统一结果与 metadata;这些字段变化通常需要跨层同步 (packages/cli/src/tools/types/ToolTypes.ts, packages/cli/src/tools/core/createTool.ts)
  • 注册表将内置与 MCP 工具保存在独立 Map 中,却共享分类/标签索引和 deferred 管理器,因此动态目录替换必须先移除旧索引再加入新索引 (packages/cli/src/tools/registry/ToolRegistry.ts)
  • deferred 机制只延迟 schema 暴露,不延迟工具实例注册;ToolSearch 从完整 registry 搜索后标记当前 manager,下一轮 Provider 请求才会看到声明 (packages/cli/src/tools/registry/DeferredToolManager.ts, packages/cli/src/tools/builtin/system/ToolSearchTool.ts)
  • MCP 变化通知使用小型有界内存队列,目录/内容/连接默认最多 32 条、日志和任务最多 64 条;drain 是 destructive read (packages/cli/src/tools/registry/ToolRegistry.ts)

Decisions

  • isReadOnly 字段已被移除,权限只从 ToolKind 推断;新增代码不应恢复第二套只读真相源 (packages/cli/src/tools/types/ToolTypes.ts, git:a074815b)
  • 工具 schema 从 Zod 迁移到 TypeBox,是为了让运行时校验与 Provider JSON Schema 来自同一声明 (packages/cli/src/tools/core/createTool.ts, packages/cli/src/tools/validation/schemaToJson.ts, git:311ba368)
  • MCP 与 Browser 的二进制结果复用 SessionArtifactStore,但通过 namespace、Session identity、配额与是否暴露路径保持隔离 (packages/cli/src/tools/artifacts/SessionArtifactStore.ts, packages/cli/src/browser/BrowserArtifactStore.ts)

Patterns

  • affectedPaths 用于安全审阅、worktree 边界和多文件权限匹配;多路径工具应返回完整目标集合,而不是只依赖 file_path 惯例 (packages/cli/src/tools/types/ToolTypes.ts, packages/cli/src/tools/builtin/file/applyPatch.ts)
  • 权限签名优先使用 extractSignatureContent,项目级规则再通过 abstractPermissionRule 泛化;两者缺失会降低审批可读性并阻止持久化项目规则 (packages/cli/src/tools/types/ToolTypes.ts, packages/cli/src/tools/execution/ToolApprovalController.ts)
  • 统一结果允许领域 metadata 扩展,但 llmContent 与 metadata 职责不同:前者供模型消费,后者供持久化和表面投影 (packages/cli/src/tools/types/ToolTypes.ts, packages/cli/src/tools/display/ToolResultProjector.ts)

Consumer Analysis

  • packages/cli/src/tools/builtin/ 是 createTool 和 ToolConfig 的最大消费者;所有内置能力都通过同一工厂获得校验、metadata 与 invocation 行为 (packages/cli/src/tools/builtin/index.ts)
  • packages/cli/src/agent/runtime/SessionRuntime.ts 构造基础注册表和每个 Agent 的过滤注册表,并把 Browser、LSP、Skill、Task 等 Session 私有对象注入工具工厂 (packages/cli/src/agent/runtime/SessionRuntime.ts)
  • packages/cli/src/agent/loop/ 消费 function declarations、deferred listing、ExecutionContext 和 ToolResult,并把 registry/manager 放入每次调用上下文供 ToolSearch 使用 (packages/cli/src/agent/loop/executeLoopGenerator.ts, packages/cli/src/agent/loop/providerSystemPrompt.ts)
  • packages/cli/src/mcp/ 将外部 MCP schema 包装为 ToolKind.Execute 的 Blade 工具,并通过动态目录替换而非内置注册路径更新 (packages/cli/src/mcp/createMcpTool.ts, packages/cli/src/mcp/McpRegistry.ts)
  • packages/cli/src/browser/ 与 packages/cli/src/mcp/ 共同消费 SessionArtifactStore;Browser 隐藏 ACP 路径,MCP 使用独立 namespace 和类型约束 (packages/cli/src/browser/BrowserArtifactStore.ts, packages/cli/src/mcp/McpToolArtifactStore.ts)

© echoVic, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .trae/knowledges/tool-and-automation-platform/tool-contracts-and-registry of echoVic/blade-code.

Open the folder on GitHubat commit 30f8684

Compare with similar skills

Knowledge Tool Contracts And Registry next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Knowledge Tool Contracts And Registry compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Knowledge Tool Contracts And Registry this skillechoVic/blade-code181—~1.9kAutomated safety check: PassMIT
MCP Server Builderanthropics/skills180k63 repos~2.3kAutomated safety check: PassApache-2.0
MCP Server BuildershareAI-lab/learn-claude-code78k5 repos~1.2kAutomated safety check: PassMIT
MCP Integration for Pluginsanthropics/claude-plugins-official38k11 repos~3.1kAutomated safety check: PassApache-2.0
Crush Configurationcharmbracelet/crush29k—~3.7kAutomated safety check: PassCustom licence
Context Mode Output Sandboxmksglu/context-mode26k—~4.1kAutomated safety check: PassCustom licence

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Categories

Questions about Knowledge Tool Contracts And Registry

What does Knowledge Tool Contracts And Registry do?

Covers Blade 的 Tool/ToolInvocation/ToolResult 契约、createTool 工厂、TypeBox 参数边界、ToolRegistry、延迟工具发现与通用 Session 制品存储。. Knowledge Tool Contracts And Registry is an agent skill from echoVic/blade-code./tool-execution-pipeline/)、具体领域工具行为(见相邻子节点)。 Keywords: ToolConfig, ToolKind, ToolResult, UnifiedToolInvocation, createTool, ToolRegistry, DeferredToolManager, TypeBox, schemaToFunctionSchema, SessionArtifactStore.

When should I use Knowledge Tool Contracts And Registry?

Knowledge Tool Contracts And Registry fits situations like: tasks that involve MCP servers.

How do I install Knowledge Tool Contracts And Registry in Claude Code?

Run `npx skills add echoVic/blade-code --skill knowledge-tool-contracts-and-registry -a claude-code`. Or copy the skill folder (.trae/knowledges/tool-and-automation-platform/tool-contracts-and-registry in echoVic/blade-code) into .claude/skills/knowledge-tool-contracts-and-registry in your project. Claude Code loads it when a task matches its description.

How do I install Knowledge Tool Contracts And Registry in Codex?

Run `npx skills add echoVic/blade-code --skill knowledge-tool-contracts-and-registry -a codex`. Or copy the skill folder (.trae/knowledges/tool-and-automation-platform/tool-contracts-and-registry in echoVic/blade-code) into .agents/skills/knowledge-tool-contracts-and-registry in your project. Codex loads it when a task matches its description.

Can I use Knowledge Tool Contracts And Registry in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add echoVic/blade-code --skill knowledge-tool-contracts-and-registry -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/knowledge-tool-contracts-and-registry, .gemini/skills/knowledge-tool-contracts-and-registry, .github/skills/knowledge-tool-contracts-and-registry and .opencode/skills/knowledge-tool-contracts-and-registry in your project.

What does Knowledge Tool Contracts And Registry need to run?

SKILL.md names no scripts, command-line tools or credentials: Knowledge Tool Contracts And Registry is instructions for the agent only.

Does Knowledge Tool Contracts And Registry access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Knowledge Tool Contracts And Registry safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Knowledge Tool Contracts And Registry use?

Knowledge Tool Contracts And Registry is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Knowledge Tool Contracts And Registry use?

About 1.9k tokens (SKILL.md is roughly 7.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Knowledge Tool Contracts And Registry?

Skills that share tags, products or a category with Knowledge Tool Contracts And Registry: MCP Server Builder (anthropics/skills, 180k stars), MCP Server Builder (shareAI-lab/learn-claude-code, 78k stars), MCP Integration for Plugins (anthropics/claude-plugins-official, 38k stars) and Crush Configuration (charmbracelet/crush, 29k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Knowledge Tool Contracts And Registry?

echoVic (a GitHub user) maintains it in echoVic/blade-code, which has 181 GitHub stars. The repository holds 38 skills in this directory. The repository was last updated on September 27, 2026.

Source: echoVic/blade-code on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.