default

Documentation for the default agent in mini-swe-agent, including its configuration, control flow, and possible interruptions or limits.

In plain words
What is it for?
Use it when configuring, debugging, or extending mini-swe-agent's DefaultAgent and related execution behavior.
Why use it?
It helps developers understand how the default coding agent runs and what conditions can stop or alter its work.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/swe-agent/mini-swe-agent/default
Clone the repo
git clone --depth 1 https://github.com/SWE-agent/mini-swe-agent
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 181 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00181
Opus 5 $0.00000 $0.00090
Sonnet 5 $0.00000 $0.00036
Haiku 4.5 $0.00000 $0.00018

Measured 2d ago against content hash c8b07f99d6eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

default scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

docs/reference/agents/default.md · 31 lines

What it actually says

DefaultAgent

!!! note "DefaultAgent class"

- [Read on GitHub](https://github.com/swe-agent/mini-swe-agent/blob/main/src/minisweagent/agents/default.py)

??? note "Full source code"

    ```python
    --8<-- "src/minisweagent/agents/default.py"
    ```

!!! tip "Understanding the control flow"

Check out the [control flow guide](../../advanced/control_flow.md) for a visual explanation of the agent's control flow.

::: minisweagent.agents.default.AgentConfig

::: minisweagent.agents.default.DefaultAgent

::: minisweagent.exceptions.InterruptAgentFlow

::: minisweagent.exceptions.Submitted

::: minisweagent.exceptions.LimitsExceeded

::: minisweagent.exceptions.FormatError

::: minisweagent.exceptions.UserInterruption

{% include-markdown "../../_footer.md" %}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 31 lines · 0 tokens per session scan A c8b07f99d6eb

Subscribe to this mod's changes

default is an agent published in the GitHub repository SWE-agent/mini-swe-agent (6,860 stars, last pushed 8d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 181 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.