AgentBreakWatch
REMOTE · AGENTBREAKWATCH.COM
Audit AI Agent SDKs and MCP servers for breaking changes, schema drift, and migration fixes.
Available components
Last scanned (22 hours ago)
Scores higher than 79% of remote servers
Reachable. Last reached 4 Nov 2026.
Category Developer Tools
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability78
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 510 tokens (~127/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management33
- Stability observed for 10 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Oct 26 0
- Server version: 1.2.0 → 1.2.1 functional
- 27 Oct 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- Tool “check_stack_drift” rewrote its description, which is the text the model reads security
- 26 Oct 26 +7
- Authorization: unverified → partial ▲ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “check_stack_drift” rewrote its description, which is the text the model reads security
- Tool “get_archived_mcp_replacements” rewrote its description, which is the text the model reads security
- Tool “get_package_stability” rewrote its description, which is the text the model reads security
- Tool “list_volatile_packages” rewrote its description, which is the text the model reads security
- Schema quality: pass → fail ▼ functional
- Stability: unverified → 0.03 ▲ functional
- The server now declares the “prompts” capability functional
- The server now declares the “resources” capability functional
- Schema quality: good → excellent functional
- Server version: 1.1.0 → 1.2.0 functional
- 25 Oct 26 67
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 4 Nov 2026 · Probed https://agentbreakwatch.com/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=agentbreakwatch.com | CN=YR2,O=Let's Encrypt,C=US | 25 Oct 2026 | 23 Jan 2027 | RSA 2048 | SHA256-RSA | 635e723e36f3e520841c3fa14219a7f875f |
| SANs: agentbreakwatch.com | ||||||
| CN=YR2,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | 4ebd24947e24d394802d84a52fd5b319 |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of agentbreakwatch.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| agentbreakwatch.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://agentbreakwatch.com/api/mcp | Verified | 200 | |
| http (plaintext) | http://agentbreakwatch.com/api/mcp | HTTPS enforced | 308 | https://agentbreakwatch.com/api/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
check_stack_drift ~101
Read-only audit of a package.json, requirements.txt, or .mcp.json configuration string against 258 live AI Agent SDKs and MCP servers. Flags breaking major version deltas, unpinned @latest MCP servers, and outdated dependencies with exact pin commands. Requires no authentication and returns a structured JSON report.
| Name | Type | Req | Description |
|---|---|---|---|
| manifest | string | yes | Raw contents of .mcp.json, package.json, requirements.txt, or a newline-separated list of packages |
No output schema declared.
No examples provided.
get_archived_mcp_replacements ~52
Read-only lookup returning the complete migration matrix for archived or frozen @modelcontextprotocol/server-* reference packages and their official 2026 vendor-maintained replacements. Takes no parameters and requires no authentication.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_package_stability ~118
Read-only lookup of live npm or PyPI version, publish timestamp, 90-day release velocity, stability score (0-100), MCP tools/list schema drift risk, and before/after migration code for a single AI Agent SDK or MCP server. Prefer this over check_stack_drift when inspecting one specific package by name or slug.
| Name | Type | Req | Description |
|---|---|---|---|
| package | string | yes | Package name or slug (e.g. 'openai', '@modelcontextprotocol/sdk', '@playwright/mcp', 'fastmcp', 'mcp-clickhouse') |
No output schema declared.
No examples provided.
list_volatile_packages ~159
Read-only query that lists the fastest-changing or highest schema-drift-risk AI Agent SDKs and MCP servers from the live AgentBreakWatch telemetry index, sorted descending by 90-day release velocity. Supports filtering by kind ('sdk', 'mcp', 'all'), category hub slug, and result limit (1-50).
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Optional category hub slug (e.g. 'agent-sdks', 'aws-labs', 'database-backend', 'browser-automation', 'cloud-infra') |
| kind | string | – | Filter by Agent SDK ('sdk'), MCP server ('mcp'), or 'all' |
| limit | number | – | Maximum number of packages to return (default 15, max 50) |
No output schema declared.
No examples provided.
How do I install the AgentBreakWatch MCP server?
AgentBreakWatch is a hosted endpoint at https://agentbreakwatch.com/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · agentbreakwatch.com
claude mcp add --transport http joeyg6393-agentbreakwatch-mcp 'https://agentbreakwatch.com/api/mcp'
What is the AgentBreakWatch MCP server?
AgentBreakWatch is an MCP server listed in the public MCP registry as io.github.joeyg6393/agentbreakwatch-mcp. Audit AI Agent SDKs and MCP servers for breaking changes, schema drift, and migration fixes. This page covers its hosted endpoint (https://agentbreakwatch.com/api/mcp).
Is the AgentBreakWatch MCP server safe to use?
AgentBreakWatch scores 79 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the AgentBreakWatch MCP server expose?
AgentBreakWatch exposes 4 tools: check_stack_drift, get_package_stability, list_volatile_packages, get_archived_mcp_replacements. Their descriptions and schemas cost roughly 430 tokens of context every time the server is loaded.
Does the AgentBreakWatch MCP server require authentication?
No. We connected to AgentBreakWatch without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the AgentBreakWatch MCP server still maintained?
AgentBreakWatch is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.