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.
npx skills add Arenukvern/mcp_flutter --skill flutter-mcp-toolkit-intentcall-migrationgit clone --depth 1 https://github.com/Arenukvern/mcp_flutterWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-intentcall-migration)<a href="https://agentmods.dev/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-intentcall-migration"><img src="https://agentmods.dev/badge/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-intentcall-migration/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-intentcall-migration"><img src="https://agentmods.dev/badge/skills/arenukvern/mcp_flutter/flutter-mcp-toolkit-intentcall-migration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00058 | $0.01126 |
| Opus 5 | $0.00029 | $0.00563 |
| Sonnet 5 | $0.00012 | $0.00225 |
| Haiku 4.5 | $0.00006 | $0.00113 |
Grade A, and why
flutter-mcp-toolkit-intentcall-migration 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.
IntentCall migration — MCPCallEntry → AgentCallEntry
MCPCallEntry is removed from mcp_toolkit. App code must use
AgentCallEntry (from intentcall_core, re-exported by mcp_toolkit).
Canonical migration doc: migration_mcp_call_entry_to_agent_call_entry.md
When to use this skill
dart analyzereports undefinedMCPCallEntryafter upgradingmcp_toolkit- User asks to migrate custom tools/resources to the new API
- Before shipping a major
mcp_toolkitbump to consumers
CLI (preferred)
# Preview (exit 1 if changes pending)
flutter-mcp-toolkit migrate agent-entries --check lib/
# Apply
flutter-mcp-toolkit migrate agent-entries --write lib/
flutter-mcp-toolkit migrate agent-entries --write --namespace my_app lib/main.dart
Alias: migrate mcp-call-entry (same behavior).
After migration — registration
MCPToolkitBinding.addEntries(entries: Set<AgentCallEntry>)bootstrapFlutter(additionalEntries: { ... })addMcpTool(AgentCallEntry)— still a shortcut for a single entry
Handlers should return AgentResult (AgentResult.success / AgentResult.failure).
For legacy MCPCallResult + MCPToolDefinition handlers, use mcpToolkitTool /
mcpToolkitResource (see flutter-mcp-toolkit-custom-tools).
Legacy pattern (before — do not ship new code)
// BEFORE (removed in Phase 6b)
final tool = MCPCallEntry.tool(
handler: (request) async => MCPCallResult(
message: 'ok',
parameters: {'n': request['n']},
),
definition: MCPToolDefinition(
name: 'my_tool',
description: 'Example',
inputSchema: {'type': 'object', 'properties': {}},
),
);
Target pattern (after)
import 'package:mcp_toolkit/mcp_toolkit.dart';
final tool = AgentCallEntry.tool(
namespace: 'app',
name: 'my_tool',
description: 'Example',
inputSchema: const {
'type': 'object',
'additionalProperties': false,
'properties': {'n': {'type': 'string'}},
'required': ['n'],
},
handler: (final args) async {
final n = args['n']?.toString() ?? '';
return AgentResult.success(
message: 'ok',
data: {'n': n},
);
},
);
await MCPToolkitBinding.instance.addEntries(entries: {tool});
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.
- 6d ago First seen · 127 lines · 58 tokens per session scan A 5a8ac9dcca8d
flutter-mcp-toolkit-intentcall-migration is a skill published in the GitHub repository Arenukvern/mcp_flutter (376 stars, last pushed yesterday), licensed MIT. It adds 58 tokens to every session and 1,126 once invoked, about $0.0003 per session on Opus 5. 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 2026-09-03.
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