DC pctx
MCP aggregation and Code Mode execution layer for token-efficient agent workflows. Wraps portofcontext/pctx — connects agents to Linear, GitHub, and other MCP servers via a single local endpoint. Use when agents need to call MCP tools or batch multiple tool calls into a single TypeScript execution to reduce token cost.
As a process C 51/100 · Has gaps — weak spots: result and completion, when it triggers, inputs and preconditions
What is at stake
The skill contains fragments that, in the wrong hands, cost money or data. Below: what the installer risks and what the author should do.
The skill contains commands that delete files, rewrite disks or execute code fetched from the network. The agent may run them without asking if it believes the instructions require it.
Replace destructive commands with safe equivalents that ask for confirmation, scope them to one folder, and stop piping curl into a shell: pin a version and a checksum.
How to improve
- Address the high-severity findings: each costs 18 safety points. If one is a false positive, add the rule id to guard.allow in spec.yaml.
- Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
- A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.
Guard findings · 5
-
high Dangerous commands
cmd-persistenceinstall.sh:82Persistence mechanism (cron / launchd / scheduled task / autorun registry)launchctl load "$PCTX_PLIST"
-
high Dangerous commands
cmd-persistencepctx-skill.sh:90Persistence mechanism (cron / launchd / scheduled task / autorun registry)launchctl load "$PCTX_PLIST" 2>&1 || true
-
high Dangerous commands
cmd-persistenceSKILL.md:191Persistence mechanism (cron / launchd / scheduled task / autorun registry)rm -rf ~/.config/pctx/ ~/Library/LaunchAgents/ai.openclaw.pctx.plist
Medium and low: 2
-
medium Dangerous commands
cmd-persistenceinstall.sh:7Persistence mechanism (cron / launchd / scheduled task / autorun registry) (string literal in code, not executed)PCTX_PLIST="$HOME/Library/LaunchAgents/ai.openclaw.pctx.plist"
code literal -
medium Dangerous commands
cmd-persistencepctx-skill.sh:7Persistence mechanism (cron / launchd / scheduled task / autorun registry) (string literal in code, not executed)PCTX_PLIST="$HOME/Library/LaunchAgents/ai.openclaw.pctx.plist"
code literal
Files scanned: 5. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- note
frontmatter-keyunknown frontmatter key "homepage"
Process rating: all ten parameters 51/100
- 0Result and completion. Does not say what the result is
- 0Inputs and preconditions. Does not say what the process needs to start
- 20When it triggers. No condition that starts the skill
- 50Failures and branches. 0 branches, has a failure section
- 60Tools and files. Uses tools (web) that frontmatter does not declare
- 85Steps. 10 steps, 1 vague phrases
- 100Consistency. Name and required fields are in place
- 100Execution cost. Instruction body is 1533 tokens
- 100Running it twice. Mutating operations check current state
- 100Progress reporting. Reports progress
Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.
Quality signals
- +5Description has no quoted example phrases that should trigger the skill
- +4Description does not say when NOT to use the skill (false activations)
- +3Output format is not stated: the model decides each time
- -2localhost URLs: will not work for another user
- +1No license
- +2Single-language instructions
- +3Description length 320: enough signal without eating the budget
- +4Structure: 17 headings
- +3Step-by-step instructions: 10 items
- +4Has examples (10 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 81.