Intermittent SDK crash on PR review - exits with code 1 after ~150ms with $0 cost

[ibabencu]

Description

The Claude Code Review workflow intermittently crashes almost immediately after initialization, before making any API calls.

Error Pattern

{
  "type": "result",
  "subtype": "success",
  "is_error": true,
  "duration_ms": 158,
  "num_turns": 1,
  "total_cost_usd": 0,
  "permission_denials": []
}

error: Claude Code process exited with code 1
      at $ (.../node_modules/@anthropic-ai/claude-agent-sdk/sdk.mjs:19:7668)

Key observations:

• duration_ms: ~150-180ms - crashes almost instantly
• total_cost_usd: 0 - no API calls were made
• permission_denials: [] - not a permissions issue
• Model initializes successfully: "model": "claude-sonnet-4-5-20250929"

Intermittent Nature

Same workflow, same configuration - some PRs succeed, others fail:

Time	PR Type	Result	Duration
09:35	Human PR	✅ Success	1m52s
07:46	Human PR	✅ Success	1m43s
10:57	Dependabot PR	❌ Fail	21s
12:11	Human PR	❌ Fail	33s

Re-running the failed workflow produces the same failure.

Workflow Configuration

- name: Run Claude Code Review
  uses: anthropics/claude-code-action@v1
  with:
    anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
    prompt: |
      Please review this PR...
    claude_args: |
      --allowed-tools "mcp__github__get_pull_request,mcp__github__get_pull_request_files,mcp__github__create_pending_pull_request_review,mcp__github__add_comment_to_pending_review,mcp__github__submit_pending_pull_request_review,mcp__github__get_pull_request_diff"

Environment

• Runner: ubuntu-latest
• Action version: anthropics/claude-code-action@v1
• API key: Confirmed valid (works on other PRs in same repo)

Expected Behavior

Workflow should either succeed or fail with a meaningful error message.

Actual Behavior

SDK crashes with minified JavaScript stack trace, no clear error message about root cause.

Questions

1. Is there a known issue with certain PR content triggering this?
2. Would pinning to a specific version help?
3. Is there additional debug logging we can enable?

Thanks!

[vasilich6107]

Confirming

SDK execution error: 14 |     depsCount: ${Q},
15 |     deps: ${$}}`};var Mj={keyword:"dependencies",type:"object",schemaType:"object",error:RB.error,code(X){let[Q,$]=jj(X);MB(X,Q),jB(X,$)}};function jj({schema:X}){let Q={},$={};for(let Y in X){if(Y==="__proto__")continue;let W=Array.isArray(X[Y])?Q:$;W[Y]=X[Y]}return[Q,$]}function MB(X,Q=X.schema){let{gen:$,data:Y,it:W}=X;if(Object.keys(Q).length===0)return;let J=$.let("missing");for(let G in Q){let H=Q[G];if(H.length===0)continue;let B=(0,W4.propertyInData)($,Y,G,W.opts.ownProperties);if(X.setParams({property:G,depsCount:H.length,deps:H.join(", ")}),W.allErrors)$.if(B,()=>{for(let z of H)(0,W4.checkReportMissingProp)(X,z)});else $.if(hY._`${B} && (${(0,W4.checkMissingProp)(X,H,J)})`),(0,W4.reportMissingProp)(X,J),$.else()}}RB.validatePropertyDeps=MB;function jB(X,Q=X.schema){let{gen:$,data:Y,keyword:W,it:J}=X,G=$.name("valid");for(let H in Q){if((0,wj.alwaysValidSchema)(J,Q[H]))continue;$.if((0,W4.propertyInData)($,Y,H,J.opts.ownProperties),()=>{let B=X.subschema({keyword:W,schemaProp:H},G);X.mergeValid
16 | `))X=Z0(X);let Y=`${new Date().toISOString()} [${Q.toUpperCase()}] ${X.trim()}
17 | `;if(YW()){d7(Y);return}vU().write(Y)}function WW(){return process.env.CLAUDE_CODE_DEBUG_LOGS_DIR??$W(V4(),"debug",`${a7()}.txt`)}var TU=r1(()=>{if(process.argv[2]==="--ripgrep")return;try{let X=WW(),Q=z8(X),$=$W(Q,"latest");if(!n0().existsSync(Q))n0().mkdirSync(Q);if(n0().existsSync($))try{n0().unlinkSync($)}catch{}n0().symlinkSync(X,$)}catch{}});var xU=!1;function F0(X,Q){let $=performance.now();try{return Q()}finally{performance.now()-$>B8}}var yU={cwd(){return process.cwd()},existsSync(X){return F0(`existsSync(${X})`,()=>f.existsSync(X))},async stat(X){return _U(X)},statSync(X){return F0(`statSync(${X})`,()=>f.statSync(X))},lstatSync(X){return F0(`lstatSync(${X})`,()=>f.lstatSync(X))},readFileSync(X,Q){return F0(`readFileSync(${X})`,()=>f.readFileSync(X,{encoding:Q.encoding}))},readFileBytesSync(X){return F0(`readFileBytesSync(${X})`,()=>f.readFileSync(X))},readSync(X,Q){return F0(`readSync(${X}, ${Q.length} bytes)`,()=>{let $=void 0;try{$=f.openSync(X,"r");let Y=Buffer.alloc(Q.length),W=f.readSync($
18 | `),F4}function N1(X){let Q=pU();if(!Q)return;let Y=`${new Date().toISOString()} ${X}
19 | `;lU(Q,Y)}function HW(X,Q){let $={...X};if(Q){let Y={sandbox:Q};if($.settings)try{Y={...L4($.settings),sandbox:Q}}catch{}$.settings=Z0(Y)}return $}class XX{options;process;processStdin;processStdout;ready=!1;abortController;exitError;exitListeners=[];processExitHandler;abortHandler;constructor(X){this.options=X;this.abortController=X.abortController||N6(),this.initialize()}getDefaultExecutable(){return j6()?"bun":"node"}spawnLocalProcess(X){let{command:Q,args:$,cwd:Y,env:W,signal:J}=X,G=W.DEBUG_CLAUDE_AGENT_SDK||this.options.stderr?"pipe":"ignore",H=dU(Q,$,{cwd:Y,stdio:["pipe","pipe",G],signal:J,env:W,windowsHide:!0});if(W.DEBUG_CLAUDE_AGENT_SDK||this.options.stderr)H.stderr.on("data",(z)=>{let K=z.toString();if(N1(K),this.options.stderr)this.options.stderr(K)});return{stdin:H.stdin,stdout:H.stdout,get killed(){return H.killed},get exitCode(){return H.exitCode},kill:H.kill.bind(H),on:H.on.bind(H),once:H.once.bind(H),off:H.off.bind(H)}}initialize(){try{let{additionalDirectories:X=[],agent:Q,betas:$,cwd:Y,
error: Claude Code process exited with code 1
      at $ (/home/runner/work/_actions/anthropics/claude-code-action/v1/base-action/node_modules/@anthropic-ai/claude-agent-sdk/sdk.mjs:19:7668)
      at emit (node:events:98:22)
      at #handleOnExit (node:child_process:520:14)

[cloudycotton]

same happening with us.

[abhishek2025enscurex]

Same Issue Faced, Claude Automatically Updated the Version and, now All PR Is Failing

[brynary]

This is happening to us also.

{
  "type": "result",
  "subtype": "success",
  "is_error": true,
  "duration_ms": 181,
  "num_turns": 1,
  "total_cost_usd": 0,
  "permission_denials": []
}
SDK execution error: 14 |     depsCount: ${Q},
15 |     deps: ${$}}`};var Mj={keyword:"dependencies",type:"object",schemaType:"object",error:RB.error,code(X){let[Q,$]=jj(X);MB(X,Q),jB(X,$)}};function jj({schema:X}){let Q={},$={};for(let Y in X){if(Y==="__proto__")continue;let W=Array.isArray(X[Y])?Q:$;W[Y]=X[Y]}return[Q,$]}function MB(X,Q=X.schema){let{gen:$,data:Y,it:W}=X;if(Object.keys(Q).length===0)return;let J=$.let("missing");for(let G in Q){let H=Q[G];if(H.length===0)continue;let B=(0,W4.propertyInData)($,Y,G,W.opts.ownProperties);if(X.setParams({property:G,depsCount:H.length,deps:H.join(", ")}),W.allErrors)$.if(B,()=>{for(let z of H)(0,W4.checkReportMissingProp)(X,z)});else $.if(hY._`${B} && (${(0,W4.checkMissingProp)(X,H,J)})`),(0,W4.reportMissingProp)(X,J),$.else()}}RB.validatePropertyDeps=MB;function jB(X,Q=X.schema){let{gen:$,data:Y,keyword:W,it:J}=X,G=$.name("valid");for(let H in Q){if((0,wj.alwaysValidSchema)(J,Q[H]))continue;$.if((0,W4.propertyInData)($,Y,H,J.opts.ownProperties),()=>{let B=X.subschema({keyword:W,schemaProp:H},G);X.mergeValid
16 | `))X=Z0(X);let Y=`${new Date().toISOString()} [${Q.toUpperCase()}] ${X.trim()}
17 | `;if(YW()){d7(Y);return}vU().write(Y)}function WW(){return process.env.CLAUDE_CODE_DEBUG_LOGS_DIR??$W(V4(),"debug",`${a7()}.txt`)}var TU=r1(()=>{if(process.argv[2]==="--ripgrep")return;try{let X=WW(),Q=z8(X),$=$W(Q,"latest");if(!n0().existsSync(Q))n0().mkdirSync(Q);if(n0().existsSync($))try{n0().unlinkSync($)}catch{}n0().symlinkSync(X,$)}catch{}});var xU=!1;function F0(X,Q){let $=performance.now();try{return Q()}finally{performance.now()-$>B8}}var yU={cwd(){return process.cwd()},existsSync(X){return F0(`existsSync(${X})`,()=>f.existsSync(X))},async stat(X){return _U(X)},statSync(X){return F0(`statSync(${X})`,()=>f.statSync(X))},lstatSync(X){return F0(`lstatSync(${X})`,()=>f.lstatSync(X))},readFileSync(X,Q){return F0(`readFileSync(${X})`,()=>f.readFileSync(X,{encoding:Q.encoding}))},readFileBytesSync(X){return F0(`readFileBytesSync(${X})`,()=>f.readFileSync(X))},readSync(X,Q){return F0(`readSync(${X}, ${Q.length} bytes)`,()=>{let $=void 0;try{$=f.openSync(X,"r");let Y=Buffer.alloc(Q.length),W=f.readSync($
18 | `),F4}function N1(X){let Q=pU();if(!Q)return;let Y=`${new Date().toISOString()} ${X}
19 | `;lU(Q,Y)}function HW(X,Q){let $={...X};if(Q){let Y={sandbox:Q};if($.settings)try{Y={...L4($.settings),sandbox:Q}}catch{}$.settings=Z0(Y)}return $}class XX{options;process;processStdin;processStdout;ready=!1;abortController;exitError;exitListeners=[];processExitHandler;abortHandler;constructor(X){this.options=X;this.abortController=X.abortController||N6(),this.initialize()}getDefaultExecutable(){return j6()?"bun":"node"}spawnLocalProcess(X){let{command:Q,args:$,cwd:Y,env:W,signal:J}=X,G=W.DEBUG_CLAUDE_AGENT_SDK||this.options.stderr?"pipe":"ignore",H=dU(Q,$,{cwd:Y,stdio:["pipe","pipe",G],signal:J,env:W,windowsHide:!0});if(W.DEBUG_CLAUDE_AGENT_SDK||this.options.stderr)H.stderr.on("data",(z)=>{let K=z.toString();if(N1(K),this.options.stderr)this.options.stderr(K)});return{stdin:H.stdin,stdout:H.stdout,get killed(){return H.killed},get exitCode(){return H.exitCode},kill:H.kill.bind(H),on:H.on.bind(H),once:H.once.bind(H),off:H.off.bind(H)}}initialize(){try{let{additionalDirectories:X=[],agent:Q,betas:$,cwd:Y,
error: Claude Code process exited with code 1
      at $ (/home/runner/work/_actions/anthropics/claude-code-action/2a420af43b71edc386064ae11ab21f6b07640445/base-action/node_modules/@anthropic-ai/claude-agent-sdk/sdk.mjs:19:7668)
      at emit (node:events:98:22)
      at #handleOnExit (node:child_process:520:14)
Error: Process completed with exit code 1.

[wdprice]

Also experiencing this issue. I am doing my first time setup so I cannot confirm a before state, but the minified stack trace matches up.

[brynary]

Unclear if this is the same as #852 or different but here is my reproduction workflow:

name: Claude Test

on:
  workflow_dispatch:

jobs:
  test:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Tell a joke
        uses: anthropics/claude-code-action@8341a564b0c1693e9fa29c681852ee3714980098 # v1
        with:
          claude_code_oauth_token: ${{ secrets.KICK_CLAUDE_CODE_TOKEN }}
          prompt: "Tell me a programming joke"
          claude_args: --model sonnet

[vasilich6107]

Hi @ashwin-ant
Could you check