@multi-agent/sdk/dist/index.mjs

AI Agents SDK for creating, using and sharing intelligent agents

import*as L from"@grpc/grpc-js";import*as W from"@grpc/proto-loader";import{fileURLToPath as se}from"url";import{dirname as oe,join as ae}from"path";var ie=se(import.meta.url),ce=oe(ie),U=l=>{let e=ae(ce,"proto","a2a.proto"),m=W.loadSync(e,{keepCase:!0,longs:String,enums:String,defaults:!0,oneofs:!0}),A=L.loadPackageDefinition(m).a2a,v={getAgentCard:(T,u)=>{try{let s=l.getAgentCard(),S={id:s.id,name:s.name,description:s.description,version:s.version,capabilities:s.capabilities,endpoints:{grpc_address:s.endpoints.grpcAddress,grpc_port:s.endpoints.grpcPort,http_address:s.endpoints.httpAddress||"",http_port:s.endpoints.httpPort||0},metadata:{author:s.metadata.author||"",tags:s.metadata.tags||[],supported_languages:s.metadata.supportedLanguages||[],max_concurrent_tasks:s.metadata.maxConcurrentTasks||10,extra:s.metadata.extra||{}}};u(null,S)}catch(s){u({code:L.status.INTERNAL,details:`\u83B7\u53D6Agent\u5361\u7247\u5931\u8D25: ${s.message}`})}},sendTask:async(T,u)=>{try{let{task_id:s,message:S,metadata:R}=T.request,f=await l.createTask(s,S);l.processTaskAsync(f).catch(o=>{console.error(`\u4EFB\u52A1\u5904\u7406\u5931\u8D25 [${s}]:`,o)});let w={task_id:f.id,initial_status:F(f.status),message:"\u4EFB\u52A1\u5DF2\u521B\u5EFA\u5E76\u5F00\u59CB\u5904\u7406"};u(null,w)}catch(s){u({code:L.status.INTERNAL,details:`\u53D1\u9001\u4EFB\u52A1\u5931\u8D25: ${s.message}`})}},getTaskStatus:async(T,u)=>{try{let{task_id:s}=T.request,S=await l.getTaskStatus(s),R={id:S.id,agent_id:S.agentId,from_agent_id:S.fromAgentId||"",status:F(S.status),message:S.message,artifacts:S.artifacts,progress:S.progress,created_at:S.createdAt,updated_at:S.updatedAt,started_at:S.startedAt||0,completed_at:S.completedAt||0,error_message:S.errorMessage||""};u(null,R)}catch(s){u({code:L.status.NOT_FOUND,details:`\u4EFB\u52A1\u4E0D\u5B58\u5728: ${s.message}`})}},streamTaskUpdates:async T=>{try{let{task_id:u,message:s,metadata:S}=T.request,R=l.processTaskStream(u,s);for await(let f of R){let w={task_id:f.taskId,status:F(f.status),progress:f.progress,new_artifacts:f.newArtifacts||[],message:f.message||"",timestamp:f.timestamp};T.write(w)}T.end()}catch(u){T.destroy(new Error(`\u6D41\u5F0F\u4EFB\u52A1\u5904\u7406\u5931\u8D25: ${u.message}`))}},sendMessage:async(T,u)=>{try{let{from_agent_id:s,to_agent_id:S,message:R,correlation_id:f}=T.request,w=await l.handleMessage(s,R),o={success:w,message:w?"\u6D88\u606F\u5904\u7406\u6210\u529F":"\u6D88\u606F\u5904\u7406\u5931\u8D25",message_id:f||`msg_${Date.now()}`};u(null,o)}catch(s){u({code:L.status.INTERNAL,details:`\u6D88\u606F\u53D1\u9001\u5931\u8D25: ${s.message}`})}},healthCheck:(T,u)=>{let s={status:1,message:"Agent\u670D\u52A1\u8FD0\u884C\u6B63\u5E38",details:{timestamp:new Date().toISOString(),uptime:process.uptime().toString()}};u(null,s)}},h=new L.Server;return h.addService(A.A2AAgentService.service,v),{server:h,listen:async(T,u="0.0.0.0")=>new Promise((s,S)=>{let R=`${u}:${T}`;h.bindAsync(R,L.ServerCredentials.createInsecure(),(f,w)=>{if(f){S(new Error(`gRPC\u670D\u52A1\u5668\u542F\u52A8\u5931\u8D25: ${f.message}`));return}h.start(),console.log(`\u{1F5A5}\uFE0F gRPC A2A Server\u5DF2\u542F\u52A8: ${R}`),s()})}),close:()=>new Promise(T=>{h.tryShutdown(()=>{console.log("\u{1F6D1} gRPC A2A Server\u5DF2\u5173\u95ED"),T()})})}},F=l=>({pending:0,running:1,completed:2,failed:3,cancelled:4})[l]||0;import*as j from"@grpc/grpc-js";import*as G from"@grpc/proto-loader";import{fileURLToPath as le}from"url";import{dirname as ge,join as me}from"path";var pe=le(import.meta.url),ue=ge(pe),B=l=>{let e,m;if(l.endpoint){let[w,o]=l.endpoint.split(":");e=w,m=parseInt(o)}else e=l.agentAddress,m=l.agentPort;let{timeout:A=3e4,retryAttempts:v=3,keepaliveTime:h=3e4}=l,T=me(ue,"proto","a2a.proto"),u=G.loadSync(T,{keepCase:!0,longs:String,enums:String,defaults:!0,oneofs:!0}),s=j.loadPackageDefinition(u).a2a,S=`${e}:${m}`,R=new s.A2AAgentService(S,j.credentials.createInsecure(),{"grpc.keepalive_time_ms":h,"grpc.keepalive_timeout_ms":5e3,"grpc.keepalive_permit_without_calls":!0,"grpc.http2.max_pings_without_data":0,"grpc.http2.min_time_between_pings_ms":1e4}),f=()=>new Promise((w,o)=>{let r=new Date(Date.now()+A);R.waitForReady(r,i=>{i?o(new Error(`gRPC\u8FDE\u63A5\u5931\u8D25: ${i.message}`)):w()})});return{getAgentCard:async()=>(await f(),new Promise((w,o)=>{let r=new Date(Date.now()+A);R.getAgentCard({},{deadline:r},(i,d)=>{if(i){o(new Error(`\u83B7\u53D6Agent\u5361\u7247\u5931\u8D25: ${i.details||i.message}`));return}let b={id:d.id,name:d.name,description:d.description,version:d.version,capabilities:d.capabilities||[],endpoints:{grpcAddress:d.endpoints?.grpc_address||e,grpcPort:d.endpoints?.grpc_port||m,grpcEndpoint:`${d.endpoints?.grpc_address||e}:${d.endpoints?.grpc_port||m}`,httpAddress:d.endpoints?.http_address,httpPort:d.endpoints?.http_port,httpEndpoint:d.endpoints?.http_address&&d.endpoints?.http_port?`${d.endpoints.http_address}:${d.endpoints.http_port}`:void 0},metadata:{author:d.metadata?.author,tags:d.metadata?.tags||[],supportedLanguages:d.metadata?.supported_languages||[],maxConcurrentTasks:d.metadata?.max_concurrent_tasks||10,...d.metadata?.extra}};w(b)})})),sendTask:async(w,o,r)=>(await f(),new Promise((i,d)=>{let b=new Date(Date.now()+A),g={task_id:w,message:o,metadata:r||{}};R.sendTask(g,{deadline:b},(p,n)=>{if(p){d(new Error(`\u53D1\u9001\u4EFB\u52A1\u5931\u8D25: ${p.details||p.message}`));return}i({taskId:n.task_id,status:H(n.initial_status),message:n.message})})})),getTaskStatus:async w=>(await f(),new Promise((o,r)=>{let i=new Date(Date.now()+A),d={task_id:w};R.getTaskStatus(d,{deadline:i},(b,g)=>{if(b){r(new Error(`\u83B7\u53D6\u4EFB\u52A1\u72B6\u6001\u5931\u8D25: ${b.details||b.message}`));return}let p={id:g.id,agentId:g.agent_id,fromAgentId:g.from_agent_id,status:H(g.status),message:g.message,artifacts:g.artifacts||[],progress:g.progress,createdAt:parseInt(g.created_at),updatedAt:parseInt(g.updated_at),startedAt:g.started_at?parseInt(g.started_at):void 0,completedAt:g.completed_at?parseInt(g.completed_at):void 0,errorMessage:g.error_message};o(p)})})),streamTaskUpdates:async function*(w,o,r){await f();let i={task_id:w,message:o,metadata:r||{}},d=R.streamTaskUpdates(i);try{for await(let b of d)yield{taskId:b.task_id,status:H(b.status),progress:b.progress,newArtifacts:b.new_artifacts,message:b.message,timestamp:parseInt(b.timestamp)}}catch(b){throw new Error(`\u6D41\u5F0F\u4EFB\u52A1\u76D1\u542C\u5931\u8D25: ${b.message}`)}},sendMessage:async(w,o,r,i)=>(await f(),new Promise((d,b)=>{let g=new Date(Date.now()+A),p={from_agent_id:w,to_agent_id:o,message:r,correlation_id:i||`msg_${Date.now()}`};R.sendMessage(p,{deadline:g},(n,c)=>{if(n){b(new Error(`\u53D1\u9001\u6D88\u606F\u5931\u8D25: ${n.details||n.message}`));return}d({success:c.success,messageId:c.message_id,message:c.message})})})),healthCheck:async()=>(await f(),new Promise((w,o)=>{let r=new Date(Date.now()+A);R.healthCheck({},{deadline:r},(i,d)=>{if(i){o(new Error(`\u5065\u5EB7\u68C0\u67E5\u5931\u8D25: ${i.details||i.message}`));return}w({status:de(d.status),message:d.message,details:d.details||{}})})})),close:()=>{R.close(),console.log(`\u{1F50C} \u5DF2\u5173\u95ED\u4E0EAgent\u7684gRPC\u8FDE\u63A5: ${S}`)},getConnectionInfo:()=>({target:S,agentAddress:e,agentPort:m,timeout:A,retryAttempts:v})}},H=l=>({0:"pending",1:"running",2:"completed",3:"failed",4:"cancelled"})[l]||"pending",de=l=>({0:"unknown",1:"serving",2:"not_serving"})[l]||"unknown",J=()=>{let l=new Map,e={discoverAgent:async m=>{try{let[A,v]=m.split(":"),h=parseInt(v);if(!A||isNaN(h))throw new Error(`\u65E0\u6548\u7684endpoint\u683C\u5F0F: ${m}\uFF0C\u5E94\u8BE5\u662F "address:port"`);let T=B({agentAddress:A,agentPort:h}),u=await T.getAgentCard();return l.set(u.id,u),T.close(),u}catch(A){return console.warn(`Agent\u53D1\u73B0\u5931\u8D25 ${m}:`,A.message),null}},discoverAgents:async m=>{let A=m.map(h=>e.discoverAgent(h));return(await Promise.allSettled(A)).filter(h=>h.status==="fulfilled"&&h.value!==null).map(h=>h.value)},getDiscoveredAgents:()=>Array.from(l.values()),findAgentsByCapability:m=>Array.from(l.values()).filter(A=>A.capabilities.includes(m))};return e};import{StateGraph as Pe,Annotation as I}from"@langchain/langgraph";import{SystemMessage as ve}from"@langchain/core/messages";import{StateGraph as ye,Annotation as k,MemorySaver as fe}from"@langchain/langgraph";import{SystemMessage as K}from"@langchain/core/messages";var Ae=k.Root({input:k,goal:k,thoughts:k,actions:k,observations:k,currentThought:k,currentAction:k,currentObservation:k,isComplete:k,needsMoreThinking:k,maxIterations:k,currentIteration:k,finalAnswer:k,errors:k,availableAgents:k,metadata:k}),we=`\u4F60\u662F\u4E00\u4E2A\u4F7F\u7528ReAct(Reasoning and Action)\u6846\u67B6\u7684\u667A\u80FD\u52A9\u624B\u3002

\u76EE\u6807: {goal}
\u5F53\u524D\u60C5\u51B5: {input}

\u5DF2\u6709\u7684\u601D\u8003\u5386\u53F2:
{thoughtHistory}

\u5DF2\u6709\u7684\u884C\u52A8\u5386\u53F2:
{actionHistory}

\u53EF\u7528Agent\u80FD\u529B:
{availableAgents}

\u8BF7\u6309\u7167ReAct\u6846\u67B6\u8FDB\u884C\u601D\u8003:

1. **\u601D\u8003(Thought)**: \u5206\u6790\u5F53\u524D\u60C5\u51B5\uFF0C\u51B3\u5B9A\u4E0B\u4E00\u6B65\u9700\u8981\u505A\u4EC0\u4E48
2. **\u884C\u52A8(Action)**: \u5982\u679C\u9700\u8981\u59D4\u6D3E\u7ED9\u5176\u4ED6Agent\uFF0C\u8BF7\u9009\u62E9\u5408\u9002\u7684Agent\u548C\u80FD\u529B
3. **\u6700\u7EC8\u7B54\u6848**: \u5982\u679C\u5DF2\u7ECF\u6709\u8DB3\u591F\u4FE1\u606F\uFF0C\u8BF7\u7ED9\u51FA\u6700\u7EC8\u7B54\u6848

\u8BF7\u4EE5\u4EE5\u4E0B\u683C\u5F0F\u56DE\u590D:
\u601D\u8003: [\u4F60\u7684\u5206\u6790\u548C\u63A8\u7406\u8FC7\u7A0B]
\u884C\u52A8: [\u5982\u679C\u9700\u8981Agent] Agent\u80FD\u529B: \u53C2\u6570
\u6700\u7EC8\u7B54\u6848: [\u5982\u679C\u53EF\u4EE5\u56DE\u7B54] \u4F60\u7684\u7B54\u6848`,he=`\u57FA\u4E8E\u6240\u6709\u7684\u601D\u8003\u548C\u89C2\u5BDF\uFF0C\u8BF7\u63D0\u4F9B\u6700\u7EC8\u7B54\u6848:

\u539F\u59CB\u95EE\u9898: {input}
\u76EE\u6807: {goal}
\u601D\u8003\u8FC7\u7A0B: {thoughts}
\u83B7\u5F97\u7684\u4FE1\u606F: {observations}

\u8BF7\u7ED9\u51FA\u51C6\u786E\u3001\u5B8C\u6574\u7684\u6700\u7EC8\u7B54\u6848:`,Q=l=>{let{llm:e,agentRegistry:m,maxIterations:A=10,thoughtTemplate:v=we,finalAnswerTemplate:h=he}=l,T=async()=>{if(!m)return[];try{return await m.discoverAgents({status:"online"})}catch(r){return console.warn("Agent\u53D1\u73B0\u5931\u8D25:",r),[]}},u=async(r,i,d)=>{if(!m)throw new Error("Agent\u6CE8\u518C\u4E2D\u5FC3\u672A\u914D\u7F6E");try{let g=(await m.discoverAgents({capabilities:[i],status:"online"})).find(y=>y.id===r||y.agentType===r);if(!g)throw new Error(`\u672A\u627E\u5230Agent: ${r}`);let p=B({agentAddress:g.address,agentPort:g.port}),n=`react_${Date.now()}`,c={type:"capability_request",capability:i,args:d,fromAgent:"react-framework"};await p.sendTask(n,c);let C=await p.getTaskStatus(n),a=0,t=30;for(;(C.status==="pending"||C.status==="running")&&a<t;)await new Promise(y=>setTimeout(y,1e3)),C=await p.getTaskStatus(n),a++;if(C.status==="completed")return C.artifacts?.[0]?.content||C.message;throw new Error(C.errorMessage||"Agent\u4EFB\u52A1\u5931\u8D25")}catch(b){throw new Error(`Agent\u8C03\u7528\u5931\u8D25: ${b instanceof Error?b.message:b}`)}},s=r=>{let i=r.match(/^([\w_]+)\.([\w_]+)\((.*)\)$/);if(!i)return null;let[,d,b,g]=i;try{let p=g.trim()?JSON.parse(g):{};return{id:`action_${Date.now()}`,targetAgent:d,capability:b,args:p,timestamp:new Date().toISOString()}}catch(p){return console.error("\u89E3\u6790Agent\u884C\u52A8\u53C2\u6570\u5931\u8D25:",p),null}},S=async r=>{let i=r.currentIteration||0;if(console.log(`\u{1F914} ReAct\u601D\u8003 - \u7B2C${i+1}\u8F6E`),i>=(r.maxIterations||A))return{isComplete:!0,needsMoreThinking:!1,finalAnswer:"\u5DF2\u8FBE\u5230\u6700\u5927\u8FED\u4EE3\u6B21\u6570\uFF0C\u65E0\u6CD5\u5B8C\u6210\u4EFB\u52A1"};try{let d=(r.thoughts||[]).map((M,x)=>`\u7B2C${x+1}\u8F6E\u601D\u8003: ${M}`).join(`
`),b=(r.actions||[]).map((M,x)=>{let _=r.observations?.find(q=>q.actionId===M.id);return`\u7B2C${x+1}\u8F6E\u884C\u52A8: ${M.targetAgent}.${M.capability}(${JSON.stringify(M.args)}) -> ${_?.result||"\u65E0\u7ED3\u679C"}`}).join(`
`),p=(await T()).map(M=>`- ${M.agentType}: ${M.capabilities.join(", ")}`).join(`
`),n=v.replace("{goal}",r.goal||r.input).replace("{input}",r.input).replace("{thoughtHistory}",d||"\u65E0").replace("{actionHistory}",b||"\u65E0").replace("{availableAgents}",p||"\u65E0\u53EF\u7528Agent"),C=(await e.invoke([new K(n)])).content.toString(),a=C.match(/思考:\s*(.+?)(?=行动:|最终答案:|$)/s),t=C.match(/行动:\s*(.+?)(?=最终答案:|$)/s),y=C.match(/最终答案:\s*(.+)/s),P=a?a[1].trim():"\u7EE7\u7EED\u5206\u6790...",$=[...r.thoughts||[],P];if(y)return{currentThought:P,thoughts:$,finalAnswer:y[1].trim(),isComplete:!0,needsMoreThinking:!1,currentIteration:i+1};if(t){let M=t[1].trim(),x=s(M);if(x)return{currentThought:P,thoughts:$,currentAction:x,needsMoreThinking:!1,currentIteration:i+1}}return{currentThought:P,thoughts:$,needsMoreThinking:!0,currentIteration:i+1}}catch(d){return console.error("\u274C ReAct\u601D\u8003\u5931\u8D25:",d),{errors:[...r.errors||[],`\u601D\u8003\u5931\u8D25: ${d.message}`],needsMoreThinking:!1,isComplete:!0}}},R=async r=>{let i=r.currentAction;if(!i)return{needsMoreThinking:!0};console.log(`\u26A1 ReAct\u884C\u52A8: ${i.targetAgent}.${i.capability}`);try{let d=await u(i.targetAgent,i.capability,i.args),b={id:`action_${Date.now()}`,type:"agent_call",targetAgent:i.targetAgent,capability:i.capability,args:i.args,timestamp:new Date().toISOString()},g={id:`obs_${Date.now()}`,actionId:b.id,result:d,isSuccess:!0,timestamp:new Date().toISOString()};return{actions:[...r.actions||[],b],observations:[...r.observations||[],g],currentObservation:g,needsMoreThinking:!0,currentAction:null}}catch(d){console.error(`\u274C ReAct\u884C\u52A8\u5931\u8D25 [${i.targetAgent}.${i.capability}]:`,d);let b={id:`obs_${Date.now()}`,actionId:`action_${Date.now()}`,result:`\u9519\u8BEF: ${d.message}`,isSuccess:!1,timestamp:new Date().toISOString()};return{observations:[...r.observations||[],b],currentObservation:b,needsMoreThinking:!0,currentAction:null,errors:[...r.errors||[],`\u884C\u52A8\u5931\u8D25: ${d.message}`]}}},f=async r=>{if(console.log("\u{1F4DD} \u751F\u6210\u6700\u7EC8\u7B54\u6848..."),r.finalAnswer)return{isComplete:!0};try{let i=(r.thoughts||[]).join(`
`),d=(r.observations||[]).map(n=>`${n.isSuccess?"\u2705":"\u274C"} ${n.result}`).join(`
`),b=h.replace("{input}",r.input).replace("{goal}",r.goal||r.input).replace("{thoughts}",i).replace("{observations}",d);return{finalAnswer:(await e.invoke([new K(b)])).content.toString(),isComplete:!0,metadata:{...r.metadata,totalIterations:r.currentIteration,totalThoughts:r.thoughts?.length||0,totalActions:r.actions?.length||0,totalObservations:r.observations?.length||0}}}catch(i){return console.error("\u274C \u751F\u6210\u6700\u7EC8\u7B54\u6848\u5931\u8D25:",i),{finalAnswer:`\u65E0\u6CD5\u751F\u6210\u6700\u7EC8\u7B54\u6848: ${i.message}`,isComplete:!0,errors:[...r.errors||[],`\u6700\u7EC8\u7B54\u6848\u751F\u6210\u5931\u8D25: ${i.message}`]}}},o=new ye(Ae).addNode("think",S).addNode("act",R).addNode("generate_answer",f).addConditionalEdges("think",r=>r.isComplete?"__end__":r.currentAction?"act":r.needsMoreThinking?"think":"generate_answer",{think:"think",act:"act",generate_answer:"generate_answer",__end__:"__end__"}).addConditionalEdges("act",r=>r.needsMoreThinking?"think":"generate_answer",{think:"think",generate_answer:"generate_answer"}).addEdge("generate_answer","__end__").compile({checkpointer:new fe});return{execute:async(r,i,d)=>{console.log("\u{1F680} \u542F\u52A8ReAct\u63A8\u7406\u6846\u67B6..."),console.log(`\u{1F4DD} \u8F93\u5165: ${r}`),console.log(`\u{1F3AF} \u76EE\u6807: ${i||r}`);try{let b={input:r,goal:i||r,thoughts:[],actions:[],observations:[],isComplete:!1,needsMoreThinking:!0,maxIterations:A,currentIteration:0,errors:[],availableAgents:[],metadata:{startTime:new Date().toISOString(),maxIterations:A,agentCount:0}},g=await o.invoke(b,{configurable:d||{thread_id:`react_${Date.now()}`}});return console.log("\u2705 ReAct\u63A8\u7406\u5B8C\u6210"),console.log(`\u{1F4CA} \u6267\u884C\u7EDF\u8BA1: ${g.currentIteration}\u8F6E\u8FED\u4EE3, ${g.actions?.length||0}\u6B21\u884C\u52A8`),console.log(`\u{1F4DD} \u6700\u7EC8\u7B54\u6848: ${g.finalAnswer}`),g}catch(b){throw console.error("\u274C ReAct\u63A8\u7406\u5931\u8D25:",b),new Error(`ReAct\u63A8\u7406\u5931\u8D25: ${b.message}`)}},executeStream:async function*(r,i,d){console.log("\u{1F30A} \u542F\u52A8\u6D41\u5F0FReAct\u63A8\u7406...");let b={input:r,goal:i||r,thoughts:[],actions:[],observations:[],isComplete:!1,needsMoreThinking:!0,maxIterations:A,currentIteration:0,errors:[],availableAgents:[],metadata:{startTime:new Date().toISOString(),maxIterations:A,agentCount:0}},g=await o.stream(b,{configurable:d||{thread_id:`react_stream_${Date.now()}`}});for await(let p of g)for(let[n,c]of Object.entries(p))yield{step:n,state:c}}}};var Te=async(l,e,m)=>{let A=new AbortController,v=setTimeout(()=>A.abort(),m);try{let h=await 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