assumption auditor
A reliability layer for agents that extracts, grades, and verifies hidden assumptions before they lead to failure.
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assumption auditor
Example session with this skill installed
I'm going to run a script to migrate the 'user_meta' table to the new production DB instance. I'll use the credentials in the env file and notify the team on Slack once it's finished. Audit this.
- Read your context and instructions
- Compiled the assumption auditor
I have audited the migration plan. While the steps are clear, the plan relies on several high-risk 'Hoped' assumptions regarding production access and data integrity.
Assumption Ledger: Production Migration
| Assumption | Grade | Load-Bearing? | Blast Radius | Verified? |
|---|---|---|---|---|
| Credentials in .env have write access | Hoped | Yes | High (Deployment Blocked) | No |
| 'user_meta' schema matches new DB | Inferred | Yes | Critical (Data Corruption) | No |
| New DB instance is currently reachable | Hoped | Yes | High (Script Timeout) | No |
| Slack webhook URL is valid/active | Sourced | No | Low (Missed Notification) | No |
| Production DB has sufficient disk space | Hoped | Yes | Critical (System Crash) | No |
| The script handles partial failures | Hoped | Yes | High (Dirty State) | No |
| Migration is reversible via backup | Inferred | Yes | Critical (Permanent Loss) | No |
| 'Finished' means 0 errors in log | Hoped | Yes | Medium (False Success) | No |
Done-criterion: The 'user_meta' table is fully populated in the new instance with matching row counts and the Slack notification is confirmed as delivered.
Next steps
1.
Verify Credentials: Run a connection test with the .env credentials using a SELECT 1 query before starting the migration.
2.
Schema Check: Compare the DDL of the source 'user_meta' table against the target instance to ensure column compatibility.
3. Confirm Backup: Manually verify that a snapshot of the production DB was taken within the last 60 minutes.
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What you get
About this skill
The problem
AI agents often fail because they act on unexamined guesses about data schemas, API behaviors, or human availability. These silent failures happen when an agent assumes a "happy path" without verifying if the underlying context is still true or even exists.
What it does
- Extracts a minimum of 8 hidden assumptions from any proposed plan or answer.
- Grades every assumption based on evidence: Verified, Sourced, Inferred, or Hoped.
- Calculates the "blast radius" for load-bearing assumptions to prioritize verification efforts.
- Forces explicit definition of "done-criteria" and human-in-the-loop fallback procedures.
- Generates a persistent assumption ledger to track risk throughout the task execution.
Why this beats prompting it yourself
Standard prompting struggles to catch "silent" assumptions because agents are biased toward completion. This skill implements a rigorous auditing protocol that treats "probably fine" as a failure state, forcing the agent to prove its foundation before executing irreversible actions.
Use cases
- Pre-flight checks for complex multi-step agent workflows to prevent logic errors.
- Root-cause analysis for agents that provided "confidently wrong" answers.
- Risk assessment for agents handling destructive actions like database writes or API deletions.
- Validation of delegation contracts between a primary agent and its subagents.
Known limitations
This skill governs planning and factual assumptions, not user psychology. If a user explicitly forces an assumption, the auditor documents the risk but will not override the user's authority.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
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- 2
Unzip into your skills folder
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- 3
Ask your agent to use it
Restart the agent if it was already running. It picks the skill up automatically - no config needed.
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Click the path to copy it. Create the folder if it does not exist yet.
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