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opencode v2 mirror
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697export * as SkillInstructions from "./instructions.js"
import { makeLocationNode } from "@opencode/util/effect/app-node"import { Context, Effect, Layer, Schema } from "effect"import { Permission } from "../permission.js"import { Skill } from "../skill.js"import { Instructions } from "../instructions/index.js"
const Summary = Schema.Struct({ id: Skill.ID, name: Skill.Name, description: Schema.String,})type Summary = typeof Summary.Type
const entries = (skills: ReadonlyArray<Summary>) => skills.flatMap((skill) => [ " <skill>", ` <id>${skill.id}</id>`, ` <name>${skill.name}</name>`, ` <description>${skill.description}</description>`, " </skill>", ])
const render = (skills: ReadonlyArray<Summary>) => [ "Skills provide specialized instructions and workflows for specific tasks.", "Use the skill tool to load a skill when a task matches its description.", "The user may also invoke a skill directly. When that happens, its instructions appear in the conversation as a <skill_content> block, the same shape the skill tool returns. A skill that is already present this way does not need to be invoked again.", ...(skills.length === 0 ? ["No skills are currently available."] : ["<available_skills>", ...entries(skills), "</available_skills>"]), ].join("\n")
const update = (previous: ReadonlyArray<Summary>, current: ReadonlyArray<Summary>) => { const diff = Instructions.diffByKey( previous, current, (skill) => skill.id, (before, after) => before.name !== after.name || before.description !== after.description, ) // Additions and removals render as small deltas; anything else restates the full list. if (diff.changed.length > 0 || (diff.added.length === 0 && diff.removed.length === 0)) return [ "The available skills have changed. This list supersedes the previous available skills list.", render(current), ].join("\n") return [ ...(diff.added.length === 0 ? [] : ["New skills are available in addition to those previously listed:", ...entries(diff.added)]), ...(diff.removed.length === 0 ? [] : [ `The following skill IDs are no longer available and must not be used: ${diff.removed.map((skill) => skill.id).join(", ")}.`, ]), ].join("\n")}
export interface Interface { /** Lists skills the given ruleset does not deny; callers pass the merged agent and Session permissions. */ readonly load: (permissions: Permission.Ruleset) => Effect.Effect<Instructions.List>}
export class Service extends Context.Service<Service, Interface>()("@opencode/SkillInstructions") {}
const layer = Layer.effect( Service, Effect.gen(function* () { const skills = yield* Skill.Service
return Service.of({ load: Effect.fn("SkillInstructions.load")(function* (permissions) { const available = Skill.available(yield* skills.list(), permissions) .flatMap((skill) => skill.description === undefined || skill.autoinvoke === false ? [] : [{ id: skill.id, name: skill.name, description: skill.description }], ) .toSorted((a, b) => a.id.localeCompare(b.id)) return Instructions.make<ReadonlyArray<Summary>>({ key: Instructions.Key.make("core/skill-guidance"), codec: Schema.toCodecJson(Schema.Array(Summary)), read: Effect.succeed(available.length === 0 ? Instructions.removed : available), render: { initial: render, changed: update, removed: () => "Skill guidance is no longer available. Do not use any previously listed skill.", }, }) }), }) }),)
export const node = makeLocationNode({ service: Service, layer, deps: [Skill.node] })