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skills/docs/ingest-skill-contract.md
2026-08-27 13:36:35 -04:00

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# Ingest skill contract
## Contract
An ingest skill transforms an input into source understanding.
The general flow is:
```text
input -> source understanding -> response, optionally durable output
```
## Terms
### Input
Input is the source-specific content that the skill ingests.
Each ingest skill defines its accepted input shapes.
Examples include URLs, file paths, pasted text, active agent context, issue numbers, transcripts, and exported conversations.
### Source understanding
Source understanding is the main result of ingestion.
The agent can reason about the input.
The agent can answer questions about it.
The agent can use it in the current task.
Source understanding does not require writing files to disk.
A chat-only ingest satisfies the contract when the agent understands the source and gives a useful response.
### Response
Response is the agent message to the user.
The contract does not define a strict response format.
When the agent creates durable output, the response must say so and identify it.
When the agent creates temporary scratch files, the response must state their location.
### Durable output
Durable output is persisted output for longer-term use.
A source-specific skill or project convention chooses the artifact type.
Examples include Markdown files, other file formats, and database records.
## Write behavior
The agent creates durable output only in two cases:
1. The user requests durable output.
2. Active project or source-specific conventions require durable output.
When the user asks a chat-only question about a source, the ingest skill answers in chat.
When the user asks to save, write, create, or add an output, the ingest skill creates durable output.
When active project or source-specific conventions define durable output behavior, the ingest skill follows those conventions.
When no durable output convention exists, default to chat-only.
The user can ask for durable output afterward.
## Scope boundaries
This contract defines only the shared ingest flow.
Source-specific skills define extraction and analysis details for their source type.
Projects define their persistence conventions.