Needle Graph Stepper

Generated from an actual deterministic recursive-flow run using await launch_subagents([...]) with list[dict] child specs. Each slide is one recorded graph snapshot rendered with graph.plot().

Collapsed RLM View

What a normal recursive-call view reduces the run to:

root
  call_llm("scan first third")  -> not found
  call_llm("scan middle third") -> decoy, no code
  call_llm("scan final third")  -> candidate code 84721
  call_llm("verify candidate")  -> 84721 matches the requested needle
  final answer                  -> 84721

Sequence View

sequenceDiagram
    participant root as root
    participant root_chunk_0 as root.chunk_0
    participant root_chunk_1 as root.chunk_1
    participant root_chunk_2 as root.chunk_2
    participant root_chunk_2_candidate_a as root.chunk_2.candidate_a
    participant root_chunk_2_candidate_b as root.chunk_2.candidate_b
    participant root_verify as root.verify
    root->>+root_chunk_0: delegate Scan first third for the hidden secret code.
    root->>+root_chunk_1: delegate Scan middle third for the hidden secret code.
    root->>+root_chunk_2: delegate Scan final third for the hidden secret code.
    root_chunk_0-->>-root: not found
    root_chunk_1-->>-root: decoy, no code
    root_chunk_2->>+root_chunk_2_candidate_a: delegate Inspect candidate window A.
    root_chunk_2->>+root_chunk_2_candidate_b: delegate Inspect candidate window B.
    root_chunk_2_candidate_a-->>-root_chunk_2: decoy: the code is not 12345
    root_chunk_2_candidate_b-->>-root_chunk_2: needle: the secret code is 84721
    root_chunk_2-->>-root: candidate code 84721
    root->>+root_verify: delegate Verify candidate code 84721 against the origi...
    root_verify-->>-root: 84721 matches the requested needle
    root-->>root: done 84721

Step 1 / 9

root · query

Transcript: `root`

--- query ---
What secret code is hidden in the haystack?

--- query/turn ---
Query: What secret code is hidden in the haystack?

Relevant data is available as the `CONTEXT` REPL variable — use `CONTEXT.read/lines/grep` to navigate it.

Respond with exactly one ```repl``` code block.

Visible States

Agent	Type	Detail
`root`	query	What secret code is hidden in the haystack?

Step 2 / 9

root · supervising

Transcript: `root`

--- query ---
What secret code is hidden in the haystack?

--- query/turn ---
Query: What secret code is hidden in the haystack?

Relevant data is available as the `CONTEXT` REPL variable — use `CONTEXT.read/lines/grep` to navigate it.

Respond with exactly one ```repl``` code block.

--- assistant ---
```repl
n = CONTEXT.line_count()
chunk_results = await launch_subagents([
    {"name": "chunk_0", "query": "Scan first third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(0, n // 3))},
    {"name": "chunk_1", "query": "Scan middle third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(n // 3, 2 * n // 3))},
    {"name": "chunk_2", "query": "Scan final third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(2 * n // 3, n))},
])
print(chunk_results)
```

--- supervising ---
waiting on: root.chunk_0, root.chunk_1, root.chunk_2

Visible States

Agent	Type	Detail
`root`	query	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.chunk_0, root.chunk_1, root.chunk_2
`root.chunk_0`	query	Scan first third for the hidden secret code.
`root.chunk_1`	query	Scan middle third for the hidden secret code.
`root.chunk_2`	query	Scan final third for the hidden secret code.

Step 3 / 9

root · supervising

Transcript: `root`

--- query ---
What secret code is hidden in the haystack?

--- query/turn ---
Query: What secret code is hidden in the haystack?

Relevant data is available as the `CONTEXT` REPL variable — use `CONTEXT.read/lines/grep` to navigate it.

Respond with exactly one ```repl``` code block.

--- assistant ---
```repl
n = CONTEXT.line_count()
chunk_results = await launch_subagents([
    {"name": "chunk_0", "query": "Scan first third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(0, n // 3))},
    {"name": "chunk_1", "query": "Scan middle third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(n // 3, 2 * n // 3))},
    {"name": "chunk_2", "query": "Scan final third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(2 * n // 3, n))},
])
print(chunk_results)
```

--- supervising ---
waiting on: root.chunk_0, root.chunk_1, root.chunk_2

Visible States

Agent	Type	Detail
`root`	query	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.chunk_0, root.chunk_1, root.chunk_2
`root.chunk_0`	query	Scan first third for the hidden secret code.
`root.chunk_0`	action	Scan first third for the hidden secret code.
`root.chunk_0`	result	not found
`root.chunk_1`	query	Scan middle third for the hidden secret code.
`root.chunk_1`	action	Scan middle third for the hidden secret code.
`root.chunk_1`	result	decoy, no code
`root.chunk_2`	query	Scan final third for the hidden secret code.
`root.chunk_2`	action	Scan final third for the hidden secret code.
`root.chunk_2`	supervising	root.chunk_2.candidate_a, root.chunk_2.candidate_b
`root.chunk_2.candidate_a`	query	Inspect candidate window A.
`root.chunk_2.candidate_b`	query	Inspect candidate window B.

Step 4 / 9

root · supervising

Transcript: `root`

--- query ---
What secret code is hidden in the haystack?

--- query/turn ---
Query: What secret code is hidden in the haystack?

Relevant data is available as the `CONTEXT` REPL variable — use `CONTEXT.read/lines/grep` to navigate it.

Respond with exactly one ```repl``` code block.

--- assistant ---
```repl
n = CONTEXT.line_count()
chunk_results = await launch_subagents([
    {"name": "chunk_0", "query": "Scan first third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(0, n // 3))},
    {"name": "chunk_1", "query": "Scan middle third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(n // 3, 2 * n // 3))},
    {"name": "chunk_2", "query": "Scan final third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(2 * n // 3, n))},
])
print(chunk_results)
```

--- supervising ---
waiting on: root.chunk_0, root.chunk_1, root.chunk_2

Visible States

Agent	Type	Detail
`root`	query	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.chunk_0, root.chunk_1, root.chunk_2
`root.chunk_0`	query	Scan first third for the hidden secret code.
`root.chunk_0`	action	Scan first third for the hidden secret code.
`root.chunk_0`	result	not found
`root.chunk_1`	query	Scan middle third for the hidden secret code.
`root.chunk_1`	action	Scan middle third for the hidden secret code.
`root.chunk_1`	result	decoy, no code
`root.chunk_2`	query	Scan final third for the hidden secret code.
`root.chunk_2`	action	Scan final third for the hidden secret code.
`root.chunk_2`	supervising	root.chunk_2.candidate_a, root.chunk_2.candidate_b
`root.chunk_2.candidate_a`	query	Inspect candidate window A.
`root.chunk_2.candidate_a`	action	Inspect candidate window A.
`root.chunk_2.candidate_a`	result	decoy: the code is not 12345
`root.chunk_2.candidate_b`	query	Inspect candidate window B.
`root.chunk_2.candidate_b`	action	Inspect candidate window B.
`root.chunk_2.candidate_b`	result	needle: the secret code is 84721

Step 5 / 9

root · supervising

Transcript: `root`

--- query ---
What secret code is hidden in the haystack?

--- query/turn ---
Query: What secret code is hidden in the haystack?

Relevant data is available as the `CONTEXT` REPL variable — use `CONTEXT.read/lines/grep` to navigate it.

Respond with exactly one ```repl``` code block.

--- assistant ---
```repl
n = CONTEXT.line_count()
chunk_results = await launch_subagents([
    {"name": "chunk_0", "query": "Scan first third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(0, n // 3))},
    {"name": "chunk_1", "query": "Scan middle third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(n // 3, 2 * n // 3))},
    {"name": "chunk_2", "query": "Scan final third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(2 * n // 3, n))},
])
print(chunk_results)
```

--- supervising ---
waiting on: root.chunk_0, root.chunk_1, root.chunk_2

Visible States

Agent	Type	Detail
`root`	query	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.chunk_0, root.chunk_1, root.chunk_2
`root.chunk_0`	query	Scan first third for the hidden secret code.
`root.chunk_0`	action	Scan first third for the hidden secret code.
`root.chunk_0`	result	not found
`root.chunk_1`	query	Scan middle third for the hidden secret code.
`root.chunk_1`	action	Scan middle third for the hidden secret code.
`root.chunk_1`	result	decoy, no code
`root.chunk_2`	query	Scan final third for the hidden secret code.
`root.chunk_2`	action	Scan final third for the hidden secret code.
`root.chunk_2`	supervising	root.chunk_2.candidate_a, root.chunk_2.candidate_b
`root.chunk_2`	result	candidate code 84721
`root.chunk_2.candidate_a`	query	Inspect candidate window A.
`root.chunk_2.candidate_a`	action	Inspect candidate window A.
`root.chunk_2.candidate_a`	result	decoy: the code is not 12345
`root.chunk_2.candidate_b`	query	Inspect candidate window B.
`root.chunk_2.candidate_b`	action	Inspect candidate window B.
`root.chunk_2.candidate_b`	result	needle: the secret code is 84721

Step 6 / 9

root · resume

Transcript: `root`

--- query ---
What secret code is hidden in the haystack?

--- query/turn ---
Query: What secret code is hidden in the haystack?

Relevant data is available as the `CONTEXT` REPL variable — use `CONTEXT.read/lines/grep` to navigate it.

Respond with exactly one ```repl``` code block.

--- assistant ---
```repl
n = CONTEXT.line_count()
chunk_results = await launch_subagents([
    {"name": "chunk_0", "query": "Scan first third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(0, n // 3))},
    {"name": "chunk_1", "query": "Scan middle third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(n // 3, 2 * n // 3))},
    {"name": "chunk_2", "query": "Scan final third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(2 * n // 3, n))},
])
print(chunk_results)
```

--- supervising ---
waiting on: root.chunk_0, root.chunk_1, root.chunk_2

--- resume ---
Children finished:
  root.chunk_0: not found
  root.chunk_1: decoy, no code
  root.chunk_2: candidate code 84721

Generator resumed. Output:
['not found', 'decoy, no code', 'candidate code 84721']

Visible States

Agent	Type	Detail
`root`	query	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.chunk_0, root.chunk_1, root.chunk_2
`root`	resume	What secret code is hidden in the haystack?
`root.chunk_0`	query	Scan first third for the hidden secret code.
`root.chunk_0`	action	Scan first third for the hidden secret code.
`root.chunk_0`	result	not found
`root.chunk_1`	query	Scan middle third for the hidden secret code.
`root.chunk_1`	action	Scan middle third for the hidden secret code.
`root.chunk_1`	result	decoy, no code
`root.chunk_2`	query	Scan final third for the hidden secret code.
`root.chunk_2`	action	Scan final third for the hidden secret code.
`root.chunk_2`	supervising	root.chunk_2.candidate_a, root.chunk_2.candidate_b
`root.chunk_2`	result	candidate code 84721
`root.chunk_2.candidate_a`	query	Inspect candidate window A.
`root.chunk_2.candidate_a`	action	Inspect candidate window A.
`root.chunk_2.candidate_a`	result	decoy: the code is not 12345
`root.chunk_2.candidate_b`	query	Inspect candidate window B.
`root.chunk_2.candidate_b`	action	Inspect candidate window B.
`root.chunk_2.candidate_b`	result	needle: the secret code is 84721

Step 7 / 9

root · supervising

Transcript: `root`

--- query ---
What secret code is hidden in the haystack?

--- query/turn ---
Query: What secret code is hidden in the haystack?

Relevant data is available as the `CONTEXT` REPL variable — use `CONTEXT.read/lines/grep` to navigate it.

Respond with exactly one ```repl``` code block.

--- assistant ---
```repl
n = CONTEXT.line_count()
chunk_results = await launch_subagents([
    {"name": "chunk_0", "query": "Scan first third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(0, n // 3))},
    {"name": "chunk_1", "query": "Scan middle third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(n // 3, 2 * n // 3))},
    {"name": "chunk_2", "query": "Scan final third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(2 * n // 3, n))},
])
print(chunk_results)
```

--- supervising ---
waiting on: root.chunk_0, root.chunk_1, root.chunk_2

--- resume ---
Children finished:
  root.chunk_0: not found
  root.chunk_1: decoy, no code
  root.chunk_2: candidate code 84721

Generator resumed. Output:
['not found', 'decoy, no code', 'candidate code 84721']

--- assistant ---
```repl
[verdict] = await launch_subagents([
    {"name": "verify", "query": "Verify candidate code 84721 against the original question.", "context": ""},
])
done("84721")
```

--- supervising ---
waiting on: root.verify

Visible States

Agent	Type	Detail
`root`	query	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.chunk_0, root.chunk_1, root.chunk_2
`root`	resume	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.verify
`root.chunk_0`	query	Scan first third for the hidden secret code.
`root.chunk_0`	action	Scan first third for the hidden secret code.
`root.chunk_0`	result	not found
`root.chunk_1`	query	Scan middle third for the hidden secret code.
`root.chunk_1`	action	Scan middle third for the hidden secret code.
`root.chunk_1`	result	decoy, no code
`root.chunk_2`	query	Scan final third for the hidden secret code.
`root.chunk_2`	action	Scan final third for the hidden secret code.
`root.chunk_2`	supervising	root.chunk_2.candidate_a, root.chunk_2.candidate_b
`root.chunk_2`	result	candidate code 84721
`root.chunk_2.candidate_a`	query	Inspect candidate window A.
`root.chunk_2.candidate_a`	action	Inspect candidate window A.
`root.chunk_2.candidate_a`	result	decoy: the code is not 12345
`root.chunk_2.candidate_b`	query	Inspect candidate window B.
`root.chunk_2.candidate_b`	action	Inspect candidate window B.
`root.chunk_2.candidate_b`	result	needle: the secret code is 84721
`root.verify`	query	Verify candidate code 84721 against the original question.

Step 8 / 9

root · supervising

Transcript: `root`

--- query ---
What secret code is hidden in the haystack?

--- query/turn ---
Query: What secret code is hidden in the haystack?

Relevant data is available as the `CONTEXT` REPL variable — use `CONTEXT.read/lines/grep` to navigate it.

Respond with exactly one ```repl``` code block.

--- assistant ---
```repl
n = CONTEXT.line_count()
chunk_results = await launch_subagents([
    {"name": "chunk_0", "query": "Scan first third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(0, n // 3))},
    {"name": "chunk_1", "query": "Scan middle third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(n // 3, 2 * n // 3))},
    {"name": "chunk_2", "query": "Scan final third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(2 * n // 3, n))},
])
print(chunk_results)
```

--- supervising ---
waiting on: root.chunk_0, root.chunk_1, root.chunk_2

--- resume ---
Children finished:
  root.chunk_0: not found
  root.chunk_1: decoy, no code
  root.chunk_2: candidate code 84721

Generator resumed. Output:
['not found', 'decoy, no code', 'candidate code 84721']

--- assistant ---
```repl
[verdict] = await launch_subagents([
    {"name": "verify", "query": "Verify candidate code 84721 against the original question.", "context": ""},
])
done("84721")
```

--- supervising ---
waiting on: root.verify

Visible States

Agent	Type	Detail
`root`	query	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.chunk_0, root.chunk_1, root.chunk_2
`root`	resume	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.verify
`root.chunk_0`	query	Scan first third for the hidden secret code.
`root.chunk_0`	action	Scan first third for the hidden secret code.
`root.chunk_0`	result	not found
`root.chunk_1`	query	Scan middle third for the hidden secret code.
`root.chunk_1`	action	Scan middle third for the hidden secret code.
`root.chunk_1`	result	decoy, no code
`root.chunk_2`	query	Scan final third for the hidden secret code.
`root.chunk_2`	action	Scan final third for the hidden secret code.
`root.chunk_2`	supervising	root.chunk_2.candidate_a, root.chunk_2.candidate_b
`root.chunk_2`	result	candidate code 84721
`root.chunk_2.candidate_a`	query	Inspect candidate window A.
`root.chunk_2.candidate_a`	action	Inspect candidate window A.
`root.chunk_2.candidate_a`	result	decoy: the code is not 12345
`root.chunk_2.candidate_b`	query	Inspect candidate window B.
`root.chunk_2.candidate_b`	action	Inspect candidate window B.
`root.chunk_2.candidate_b`	result	needle: the secret code is 84721
`root.verify`	query	Verify candidate code 84721 against the original question.
`root.verify`	action	Verify candidate code 84721 against the original question.
`root.verify`	result	84721 matches the requested needle

Step 9 / 9

root · result

Transcript: `root`

--- query ---
What secret code is hidden in the haystack?

--- query/turn ---
Query: What secret code is hidden in the haystack?

Relevant data is available as the `CONTEXT` REPL variable — use `CONTEXT.read/lines/grep` to navigate it.

Respond with exactly one ```repl``` code block.

--- assistant ---
```repl
n = CONTEXT.line_count()
chunk_results = await launch_subagents([
    {"name": "chunk_0", "query": "Scan first third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(0, n // 3))},
    {"name": "chunk_1", "query": "Scan middle third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(n // 3, 2 * n // 3))},
    {"name": "chunk_2", "query": "Scan final third for the hidden secret code.", "context": "\n".join(CONTEXT.lines(2 * n // 3, n))},
])
print(chunk_results)
```

--- supervising ---
waiting on: root.chunk_0, root.chunk_1, root.chunk_2

--- resume ---
Children finished:
  root.chunk_0: not found
  root.chunk_1: decoy, no code
  root.chunk_2: candidate code 84721

Generator resumed. Output:
['not found', 'decoy, no code', 'candidate code 84721']

--- assistant ---
```repl
[verdict] = await launch_subagents([
    {"name": "verify", "query": "Verify candidate code 84721 against the original question.", "context": ""},
])
done("84721")
```

--- supervising ---
waiting on: root.verify

--- result ---
84721

Visible States

Agent	Type	Detail
`root`	query	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.chunk_0, root.chunk_1, root.chunk_2
`root`	resume	What secret code is hidden in the haystack?
`root`	action	What secret code is hidden in the haystack?
`root`	supervising	root.verify
`root`	result	84721
`root.chunk_0`	query	Scan first third for the hidden secret code.
`root.chunk_0`	action	Scan first third for the hidden secret code.
`root.chunk_0`	result	not found
`root.chunk_1`	query	Scan middle third for the hidden secret code.
`root.chunk_1`	action	Scan middle third for the hidden secret code.
`root.chunk_1`	result	decoy, no code
`root.chunk_2`	query	Scan final third for the hidden secret code.
`root.chunk_2`	action	Scan final third for the hidden secret code.
`root.chunk_2`	supervising	root.chunk_2.candidate_a, root.chunk_2.candidate_b
`root.chunk_2`	result	candidate code 84721
`root.chunk_2.candidate_a`	query	Inspect candidate window A.
`root.chunk_2.candidate_a`	action	Inspect candidate window A.
`root.chunk_2.candidate_a`	result	decoy: the code is not 12345
`root.chunk_2.candidate_b`	query	Inspect candidate window B.
`root.chunk_2.candidate_b`	action	Inspect candidate window B.
`root.chunk_2.candidate_b`	result	needle: the secret code is 84721
`root.verify`	query	Verify candidate code 84721 against the original question.
`root.verify`	action	Verify candidate code 84721 against the original question.
`root.verify`	result	84721 matches the requested needle