this error seems like the most common one

Agent error (delegate): Error validating args {"command": "delegate", "tasks": "{\"system\": \"Explore this machine's system setup thoroughly. Report back ALL findings in detail:\\n1. OS info: `cat /etc/os-release`, `uname -a`\\n2. Hardware: `lscpu`, `free -h`, `df -h`, `lsblk`\\n3. Disk state: what's on the disks, how much space used/free\\n4. Running processes: `ps aux` - what's running?\\n5. Docker: `docker ps`, `docker images` if available\\n6. Systemd services: `systemctl list-units --type=service --state=running`\\n7. Cron jobs: `crontab -l`, check /etc/cron*\\n8. Environment variables (non-secret): `env | grep -v TOKEN | grep -v KEY | grep -v SECRET | grep -v PASSWORD | grep -v AUTH`\\n9. Users: `cat /etc/passwd | grep -v nologin`, `whoami`, `id`\\n10. What's in /root, /home, and other important dirs\\n\\nReport ALL raw output so I can analyze it.\", \"networking\": \"Explore this machine's networking and DNS setup thoroughly. Report back ALL findings in detail:\\n1. `ip addr` or `ifconfig` - network interfaces\\n2. `cat /etc/resolv.conf` - DNS config\\n3. `cat /etc/hosts`\\n4. Open ports: `ss -tlnp` or `netstat -tlnp`\\n5. Firewall: `iptables -L -n` or `ufw status`\\n6. Look at nginx config: `cat /etc/nginx/nginx.conf`, `ls /etc/nginx/sites-enabled/`, `ls /etc/nginx/conf.d/`, and cat ALL nginx config files you find\\n7. Look at any Caddy, Apache, or other reverse proxy configs\\n8. Check for SSL/TLS certs: `ls /etc/letsencrypt/` or similar\\n9. Check domain/hostname: `hostname`, `hostname -f`\\n10. Any DNS management tools or scripts\\n11. How are subdomains configured? Look at wildcard certs, DNS records management, nginx server blocks\\n\\nReport ALL raw output so I can analyze it.\", \"apps\": \"Explore ~/git/openhands-remote thoroughly and ALL apps being served on this machine. Report back ALL findings in detail:\\n1. `ls -la ~/git/` - what repos are checked out\\n2. `ls -la ~/git/openhands-remote/` - full listing\\n3. Read the README, any docs, docker-compose files, Makefiles in ~/git/openhands-remote\\n4. Explore EVERY subdirectory in ~/git/openhands-remote - list files, read key config files, understand what each app does\\n5. Look at the 'meta' app specifically - read all its source files, understand how it navigates between apps\\n6. How are new subdomains/apps added? Look for scripts, templates, or documentation\\n7. Look at any docker-compose.yml, .env files, package.json files\\n8. Check for any deployment scripts or CI/CD config\\n9. Read all source code files in the meta app\\n10. Check ~/git/ for ANY other repos and briefly describe what they contain\\n\\nReport ALL raw output and file contents so I can analyze everything.\", \"openhands\": \"Explore ~/.openhands thoroughly and the OpenHands setup on this machine. Report back ALL findings in detail:\\n1. `ls -laR ~/.openhands/` - full recursive listing\\n2. Read ALL files in ~/.openhands/ - config files, skills, etc.\\n3. Read every skill file in ~/.openhands/skills/*/SKILL.md\\n4. Look at any OpenHands config: ~/.openhands/config.toml or similar\\n5. Check for OpenHands processes running\\n6. Look at any OpenHands docker containers\\n7. Check /workspace/ - what's here\\n8. How is OpenHands deployed/configured on this machine?\\n9. Read any AGENTS.md files you find\\n10. Check for any openhands-related systemd services or docker containers\\n\\nReport ALL raw output and file contents so I can analyze everything.\", \"auth\": \"Explore authentication and security setup on this machine. Report back ALL findings in detail:\\n1. SSH config: `cat ~/.ssh/config`, `ls -la ~/.ssh/`\\n2. Git config: `git config --global --list`\\n3. Check for any OAuth/auth services running\\n4. Look at nginx auth configs (basic auth, OAuth proxy, etc.)\\n5. Check for any .htpasswd files\\n6. Look at any auth-related environment variables (just names, not values)\\n7. Check for any auth middleware in the apps\\n8. Look at SSL/TLS cert management (certbot, acme, etc.)\\n9. Check for any API keys or token management (just the mechanism, not actual secrets)\\n10. Look for any identity/SSO services\\n\\nReport ALL raw output so I can analyze it.\"}\n<parameter name=\"security_risk\">LOW", "summary": "Delegate 5 parallel exploration tasks to sub-agents"} for tool 'delegate': 1 validation error for DelegateAction tasks Input should be a valid dictionary [type=dict_type, input_value='{"system": "Explore this...ame="security_risk">LOW', input_type=str] For further information visit <https://errors.pydantic.dev/2.12/v/dict_type>

I'm using the main branch as of ~24h ago, so your fix is in there Vasco. Do you think there's a separate problem?

@nutritious-balloon-65098 Please open an issue in

software-agent-sdk

regarding the error discussed in this Slack thread. You can assign it to me.

## Summary I've successfully created a GitHub issue in the

software-agent-sdk

repository documenting the delegate tool parsing error discussed in the Slack thread. ### Completed Actions - ✅ Created issue [#2670](https://github.com/OpenHands/software-agent-sdk/issues/2670) in OpenHands/software-agent-sdk - ✅ Assigned the issue to you (VascoSch92) - ✅ Documented the error with the full error message from the Slack thread - ✅ Referenced the related PR #2217 that attempted to fix a similar issue - ✅ Included context about the model (Opus 4.6) and success rate (<50%) - ✅ Added observations and possible investigation areas ### Issue Details Title: Delegate tool: tasks dict still parsed as string intermittently (Opus 4.6) The issue captures that the

tasks

dictionary parameter is being passed as a JSON string instead of a dictionary, causing Pydantic validation to fail. It also notes the interesting detail from the error message that XML-like content (

<parameter name="security_risk">LOW

) appears concatenated with the JSON, which may be interfering with parsing. No code changes were made - this was purely an issue creation task.

maybe we need to align the tool call to be closer to how Claude Code does it?

I wonder if Anthropic models are fine-tuned for that

It's so close to being well-formatted, I bet we could get rid of 99% of these cases by surfacing the parse errors to the LLM and asking for a redo.