Software Engineering Agent
Reference solution for taking one software change request through task understanding, repository inspection, implementation planning, code generation and editing, validation, optional repair passes, and final review.
Unit event
Engineering Task
ENGINEERING_TASKOne software change request taken through task understanding, repository inspection, implementation planning, code generation/editing, validation, optional repair passes, and final review.
Design variant
Focused repository inspection, one planning pass, one implementation pass, one validation pass, no repair, one review.
Scenario inputs
Every value this design resolves, and who owns it. Change an editable value and the figures recalculate. The pricing engine answers, not this page: nothing here multiplies anything, and until it answers the figures beside you are the ones you were already looking at, labelled as such.
63 fields
Understand Engineering Task8 fields
Input tokens eligible for cached-input treatment.
Estimated tokens of supplied engineering context.
Estimated tokens in the change request.
Estimated generated plan-seed tokens.
Estimated system/policy prompt tokens.
Inspect Repository & Context5 fields
Estimated tokens of assembled repository context.
How many files this step reads. A workload fact; it reaches no meter.
How many repository searches this step issues. A workload fact; it reaches no meter.
Plan Change9 fields
Input tokens eligible for cached-input treatment.
How much of the plan seed this step reads.
Estimated generated planning tokens.
How much of the normalized task this step reads.
Estimated planning instruction tokens.
How much of the repository context this step reads.
Implement Change9 fields
Input tokens eligible for cached-input treatment.
Estimated generated code-change tokens.
Estimated implementation instruction tokens.
How much of the implementation plan this step reads.
How much of the normalized task this step reads.
How much of the repository context this step reads.
Validate & Repair21 fields
Input tokens eligible for cached-input treatment.
How much of the code change, per occurrence this step reads.
Code Execution sessions this occurrence runs. One per occurrence; it is the Service's billed quantity.
Estimated generated assessment tokens.
How much of the normalized task this step reads.
How much of the repository context, per occurrence this step reads.
Estimated validation instruction tokens.
Estimated tokens of execution output read back.
Input tokens eligible for cached-input treatment.
How much of the code change, per occurrence this step reads.
Estimated generated repair tokens.
How much of the normalized task this step reads.
Estimated repair instruction tokens.
How much of the repository context, per occurrence this step reads.
How much of the validation assessment, per occurrence this step reads.
Finalize Change11 fields
Input tokens eligible for cached-input treatment.
How much of the code change this step reads.
Estimated generated summary tokens.
Estimated final-review instruction tokens.
How much of the normalized task this step reads.
How much accumulated repair context this step reads; zero when no repair Activity ran.
How much of the repository context this step reads.
How much of the validation assessment this step reads.
Cost by operation
Where the direct unit cost comes from. Expand an operation for the activities inside it and how each one resolved.
Understand Engineering TaskComplete1 activity, 1 priced0.0016165 USD3% of direct total
Interpret the change request and seed a plan.
Interpret Engineering Task
PricedInterpret the change request and produce a normalized task and a plan seed.
A pricing request was made and returned an amount.
Inspect Repository & ContextComplete1 activity, 0 pricedNo amount
Search and read the repository. Local tooling: real work, nobody bills for it.
Inspect Repository Context
No pricing requestSearch the repository and read the files the task touches. Deterministic tooling in V1: the catalogue has a priced Remote Tool Access Service and this fixture does not assert that ordinary local search and file reads are it.
This activity does not price. No request was made, so there is no amount — not an amount of zero.
Plan ChangeComplete1 activity, 1 priced0.004431 USD9% of direct total
Turn the request and the repository context into an implementation plan.
Plan Engineering Change
PricedTurn the task, the plan seed and the repository context into an implementation plan.
A pricing request was made and returned an amount.
Implement ChangeComplete1 activity, 1 priced0.008666 USD17% of direct total
Generate and edit the code change.
Generate Code Change
PricedGenerate and edit the code change from the plan.
A pricing request was made and returned an amount.
Validate & RepairComplete2 activities, 1 priced0.033235 USD65% of direct total
Execute the change, inspect the result, and repair where the variant calls for it.
Validate Change and Inspect Result
PricedExecute the change once and inspect what came back. One Code Execution session and one model pass, deliberately one Activity so that one occurrence still maps to at most one PricingEngineRequest.
A pricing request was made and returned an amount.
Generate Repair
Inactive×0Generate a repair from the validation assessment.
The activity is switched off in this configuration, so it contributes nothing.
Finalize ChangeComplete1 activity, 1 priced0.003498 USD7% of direct total
Review the change and write the summary.
Final Review and Summary
PricedReview the change and write the engineering result.
A pricing request was made and returned an amount.
Direct unit total
0.0514465 USDBars show each operation’s share of the stated direct unit total. An operation with no priced activity shows no amount, which is not an amount of zero.
Assumptions, issues and reproducibility
Activity states not exercised by this configuration
The read model reports these so their absence reads as absence rather than as coverage.
Issues
The runtime reported none for this configuration.
Technical detail and reproducibility
- Result source
- REFERENCE_PREFETCH
- Scenario configuration
- scenario:software-engineering:assisted:audited-2026-09-20
- Pricing effective at
- 2026-09-20T00:00:00Z
- Definition fingerprint
- 354caf273aaf86cb500c3dd1ecac2014ce8647d2cc779a27683e527890e13e0d
- Catalogue fingerprint
- fb4a33fb254bba125309001aadb10f470d9bf9f219404324ba86b2ad91c206f1
- Pricing engine version
- 0.7.0
- Pricing orchestration contract version
- v4
- Pricing rule registry version
- daf63fc55107b886370c9744e36b7276da8f235e6e5f8eb56a1d2214151568f5
- Scenario contract version
- v1
- Variant definition fingerprint
- 354caf273aaf86cb500c3dd1ecac2014ce8647d2cc779a27683e527890e13e0d