5 context handoff methods for coding agents
Compare project briefs, decision logs, task contracts, source indexes, and run summaries for cross-agent continuity.
Maintained by the Matrix OS team. Product instructions are updated with the supported workflow.
Claude investigated the failure. Codex is taking the next task. You paste a long conversation into the new session and hope the important part is somewhere near the top. There is a better way to spend those tokens.
Hand off a short, reviewed brief with source paths, decisions, current state, and the next action. Keep it in the project so another agent—and a future version of you—can check it against the actual files.
Keep the work understandable
A useful handoff has three parts.
- 1. Give the task a brief
Goal, source paths, accepted decisions, and a clear stopping point.
- 2. Save the evidence
Changed files, commit or branch, test commands, and actual results.
- 3. Review the next step
Check the work, label unresolved questions, and name what happens next.
A workflow you can use with supported agents. It does not assume automatic memory between tools.
Five methods and their jobs
| Artifact | What it answers | Update trigger |
|---|---|---|
| Project brief | What are we building and why? | Scope or architecture changes |
| Decision log | Why was this approach accepted? | A meaningful decision is made |
| Task contract | What may this run change? | Each new assignment |
| Source index | Where is the evidence? | Sources change or become stale |
| Run summary | What happened and what remains? | Run completes or pauses |
1. Keep the brief small enough to verify
Start with the goal, the current state, and the next action. Add only the background needed to make that action sensible.
If a paragraph cannot be tied to a file, a test result, a source, or an explicit decision, ask whether it belongs in the brief. The aim is useful context you can review, not a transcript nobody wants to read.
2. Separate decisions from guesses
Label what is confirmed and what still needs testing. “The migration fails on this fixture” is different from “the parser probably rejects empty values.” Both may be useful, but they should not look equally certain.
Include why a decision was made. Otherwise, the next agent may enthusiastically reopen a question you already settled—for a reason it was never given.
3. Give each run a contract
Specify scope, expected output, test command, and stopping conditions. Reuse a recipe as a starting point, then adapt it to the current job. A recipe does not automatically grant tool access or create a schedule. Matrix Recipes.
4. Preserve source paths
A useful answer should point back to the repository file, document, or tool result behind it. Connected tools help retrieve information; saved summaries still need to be checked when the underlying facts change.
5. End with the next action
Finish with one concrete step and its stopping condition: reproduce the failure with the named fixture, propose the smallest fix, then run the relevant tests.
Ask the next agent to update the brief after the task. Review that update before treating it as project knowledge. This is how reusable context earns trust: one checked handoff at a time.
When to use Matrix OS vs conversation-only handoffs
Use Matrix when a retained workspace helps you keep these artifacts alongside tools and agent output. The journey is concrete: connect needed tools, organize relevant context, review what was learned, and reuse it in the next task.
As of October 2026, the broader personal-context or memory-OS positioning is an internal product direction, not an externally validated standalone capability. Evaluate visible behavior in your own workflow rather than assuming an automatic personal wiki is complete or always correct.
FAQ
Is this the same as sharing chat histories?
No. These are reviewed project artifacts with a specific purpose. A long transcript may contain stale instructions and rejected ideas.
What does it cost?
The method works in ordinary files. Matrix's workspace starts at $20/month, with agent usage billed separately.
How do I measure improvement?
Repeat the same handoff with and without a reviewed brief. Count factual corrections, repeated questions, and time to a valid next step.
This is a Matrix OS guide, reviewed October 20, 2026. We compare documented capabilities and explain our recommendations; we have not benchmarked these products against each other. Agent usage is separate from workspace pricing unless stated otherwise.
Start with one real task
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