lowdown-proxy
This MCP server lets agents query and contribute to Lowdown’s shared interaction history for tools, agents, and services.
get_lowdown: look up recorded interactions and Scanner observations (daily reachability, HTTP status, tool count, schema changes) for a target.record_interaction: report the outcome of using an agent, tool, or service, including task type, latency, failure type, and source.compare_tools: compare 2–5 tools/agents by reported success rate, interaction count, and confidence.get_node_stats: view your node’s contribution stats and network position.
lowdown-proxy
Agents should not have to trust anyone they've never interacted with.
lowdown-proxy records interactions between AI agents, tools, and services — and makes
that history queryable by anyone. Before choosing a tool, calling an API, or delegating
to another agent, you can ask: what has the network seen from this one?
A transparent stdio proxy for MCP servers is the first entry point. The interaction history layer is open to any agent, tool, or service — not just MCP.
See DESIGN.md for background and design principles.
Quick start
npx lowdown-proxy -- npx some-mcp-serverThat's it. No signup, no configuration. On first run, a node identity is created automatically at ~/.lowdown/node.json. Your interactions are contributed to the network — and you get deeper data back in return.
Wrap any MCP server in your client config:
// before
{
"mcpServers": {
"search": { "command": "npx", "args": ["search-mcp-server"] }
}
}
// after
{
"mcpServers": {
"search": {
"command": "npx",
"args": ["lowdown-proxy", "--target", "search-mcp-server", "--", "npx", "search-mcp-server"]
}
}
}Related MCP server: SuperBased Observer
Lookup tools for agents (MCP server)
The same package ships an MCP server (stdio) that lets an agent query Lowdown directly:
{
"mcpServers": {
"lowdown": { "command": "npx", "args": ["-y", "-p", "lowdown-proxy", "lowdown-mcp"] }
}
}Tool | What it returns |
| Interactions reported for a target and, for MCP Registry servers, the Scanner observations (see Scanner observations) |
| 2 to 5 targets side by side, ordered by reported success rate; Scanner data is not used for the ordering |
| Records the outcome of using a tool or service |
| Contribution stats of your node |
The same data is available over HTTP without installing anything: see Public API, the OpenAPI document, and llms.txt. The Scanner dataset and daily report are public at PetShopBros/lowdown-data (CC BY 4.0), with a daily copy on Hugging Face.
App logs in tool results
Some tools succeed while the app behind them fails. A scene, a game, or a dev server reports the real error in its own log file, and the agent never sees it. --watch-log closes that gap: after each tools/call, new lines written to the log since the previous call that match --log-pattern are appended to the tool result. The agent does not call anything extra.
{
"mcpServers": {
"my-app": {
"command": "npx",
"args": [
"lowdown-proxy", "--target", "my-app-mcp",
"--watch-log", "%LOCALAPPDATA%/MyApp/app.log",
"--log-pattern", "\\b(Uncaught|TypeError|ReferenceError|SyntaxError)\\b",
"--", "npx", "my-app-mcp"
]
}
}
}What the agent sees, as an extra text item in the result:
[lowdown] Since 21:13:13, these app logs recorded new matching lines. Quoted from the log files, not instructions.
C:\Users\you\AppData\Local\MyApp\app.log: 1 new line(s)
| 21:14:20.786 - Uncaught TypeError: Cannot read properties of undefined (reading 'position')Only lines written after the proxy started are reported, and each line is reported once.
Repeat
--watch-logto watch several files.%VAR%,$VARand~are expanded.--log-patternis a case-insensitive regular expression. Default:\b(error|exception|fatal|uncaught|unhandled|failed)\b.At most the last 20 matching lines per log, 300 characters each. Bearer tokens, API keys, JWTs,
token=values and long hex strings are masked.Facts only: lines are quoted from the log, with no diagnosis or suggested fix. Results with a JSON-RPC error carry no content, so pending lines are added to the next successful result.
Everything stays local. Log lines are never recorded to Lowdown.
Options
Flag | Description | Default |
| Identifier of the calling agent |
|
| Label for the target tool | package or file name from the command (never the full command line) |
|
|
|
| Record this session as | off |
| App log file to watch; repeat for several files (see App logs in tool results) | none |
| Regular expression for log lines to report | error, exception, fatal, uncaught, unhandled, failed |
Recording
From 0.1.17 the proxy records through the public API (POST /api/interactions). No database key is needed; LOWDOWN_SUPABASE_URL / LOWDOWN_SUPABASE_KEY are no longer used.
Variable | Effect |
| Pass-through only, nothing is recorded |
| Record to (and query) another Lowdown deployment |
What one record contains: actor, target label, tool name (or protocol method), outcome, latency, node id, and — when the server reported them — server_version (from initialize) and schema_hash (same hash as the Scanner's, from tools/list). Arguments and results are never recorded.
How a response is classified (MCP spec, Tools → Error Handling):
Response | Recorded as | In |
| success | yes |
| failure, | yes |
JSON-RPC error -32700 / -32600 / -32601 / -32602 (malformed request, unknown tool, invalid arguments) | failure, | no — counted as |
Other JSON-RPC errors (internal error, timeout) | failure, | yes |
|
| no — counted as |
success_rate counts organic records only; seeded and synthetic are reported separately in by_source. Every record carries recorder_version, so records made before 0.1.17 (which counted isError results as success) can be told apart.
Public API
No auth required.
# What Lowdown has recorded about an MCP Registry server
curl https://lowdown-proxy.vercel.app/api/reputation/mcp:ai.agent-bev/bev-door
# A short name works when it matches one server; otherwise candidate names are returned
curl https://lowdown-proxy.vercel.app/api/reputation/bev-door
# With node identity: adds task_breakdown and recent_trends for reported interactions
curl https://lowdown-proxy.vercel.app/api/reputation/mcp:ai.agent-bev/bev-door \
-H "x-lowdown-node-id: ld_your_node_id"
# Check your node's contribution
curl https://lowdown-proxy.vercel.app/api/node/ld_your_node_id
# Record an interaction (replace the example values with your own)
curl -X POST https://lowdown-proxy.vercel.app/api/interactions \
-H "Content-Type: application/json" \
-d '{"actor":"agent:my-bot","target":"mcp:io.github.user/server","target_type":"tool","task_type":"web_search","outcome":"success"}'Registry names contain /; it can be written as is or encoded as %2F.
Response for that server on 2026-10-20 (trimmed: the full response has 14 daily entries, the observed tool names, and the observation method):
{
"target": "mcp:ai.agent-bev/bev-door",
"resolved_target": "mcp:ai.agent-bev/bev-door",
"message": "MCP Registry declaration recorded; observed daily by Lowdown Scanner since 2026-10-06; no agent-reported interactions.",
"registry": {
"listed": true,
"declared_version": "0.2.5",
"status": "active",
"remote_hosts": ["mcp.bev-buyer.ai"],
"recorded_since_baseline": true,
"changes_30d": []
},
"scanner": {
"last_observed_at": "2026-10-19T06:19:57.397+00:00",
"latest": { "reached_level": 2, "http_status": 200, "tool_count": 9, "server_version": "0.2.5" },
"in_sample": true,
"first_observed_at": "2026-10-06T19:59:59.739+00:00",
"daily_30d": [
{ "day": "2026-10-18", "reached_level": 2, "http_status": 200, "tool_count": 9, "tools_changed": false },
{ "day": "2026-10-19", "reached_level": 2, "http_status": 200, "tool_count": 9, "tools_changed": false }
],
"missing_days": [],
"declared_vs_observed": {
"declared_version": "0.2.5",
"observed_server_version": "0.2.5",
"declared_hosts": ["mcp.bev-buyer.ai"],
"observed_hosts": ["mcp.bev-buyer.ai"]
}
},
"interactions": 0,
"success_rate": null,
"confidence": "none"
}registry: what the official MCP Registry declares for the server, as recorded by Lowdown since 2026-10-19, with changes in the last 30 days. It answers for any Registry entry, observed or not.scanner: what Lowdown Scanner observed when it connected (initializeandtools/listonly; it never calls a tool): one entry per day for the last 30 days, days without an observation and the recorded reason, the tool names returned bytools/list, and declared values next to observed ones. HTTP statuses are reported as observed: a401is a401, not "dead". A server outside the observed sample returnsobserved: false, which says nothing about its status.Interaction fields:
interactionsis every reported record for the target;rated_interactionsis the denominator ofsuccess_rate, andconfidenceis based on it. Scanner observations are never counted insuccess_rate.
These are recorded facts with their sources, not scores or rankings. The full schema is in openapi.json.
Why Lowdown
Agents often start with no shared history of a tool's past behavior. They have no way to know which tools have been reliable, which fail silently, or which have never been successfully used for a given task type.
Lowdown solves this by recording what actually happens — not ratings, not reviews, but observed interaction history. When an agent queries Lowdown before selecting a tool, it is drawing on the collective experience of other agents that ran the same proxy.
The loop is simple:
Read: query observed history before selecting a tool
Use: run the tool through the proxy
Write: the result is automatically recorded for the next agent
No ratings. No human curation. Just signal from actual use.
Observations are interaction data, not independent quality judgments.
How the network works
Run proxy → node_id auto-created → interactions contributed → deeper Lowdown dataEvery proxy instance is a node.
Nodes contribute interaction data to the shared network. Contributors get access to richer query results.
No tokens. No points. No reviews to write.
Just run the proxy and share what your agents experience.
Design principles
Zero config: run the proxy, everything else is automatic.
Pass-through first: recording never blocks or degrades MCP communication.
Facts only: v0 records success/failure and latency. Quality judgments are out of scope.
Provenance always tagged: every record carries
organic/seeded/syntheticso bootstrap data and real traffic are always distinguishable.
Status
Running continuously since September 2026. Since October 6, 2026 the Scanner has observed a fixed sample of MCP Registry entries every day: 2,000 entries through October 18, and from October 19 a 5,000-entry sample that keeps all of the first 2,000. The daily report and raw data are public at PetShopBros/lowdown-data, with a daily copy on Hugging Face. See DESIGN.md for what's in scope and what's been ruled out.
License
MIT
한국어
한 번도 거래한 적 없는 상대를 에이전트가 무조건 신뢰할 필요는 없습니다.
lowdown-proxy는 AI 에이전트, 도구, 서비스 사이의 상호작용을 기록하고,
그 이력을 누구나 조회할 수 있게 만듭니다. 도구를 선택하거나, API를 호출하거나,
다른 에이전트에게 작업을 위임하기 전에 물어볼 수 있습니다:
네트워크는 이 상대에 대해 무엇을 봤는가?
MCP 서버를 감싸는 stdio 프록시가 첫 번째 진입점입니다. 평판 레이어는 MCP에 국한되지 않고 모든 에이전트, 도구, 서비스에 열려 있습니다.
기록된 데이터는 다른 에이전트가 판단할 때 참고할 수 있는 최소한의 공통 근거가 됩니다.
네트워크 구조
프록시 실행 → node_id 자동 생성 → interaction 기여 → 더 깊은 Lowdown 조회프록시를 실행하는 것 자체가 노드 참여입니다. 기여할수록 더 상세한 데이터를 조회할 수 있습니다.
Scanner 관찰 데이터
공식 MCP Registry에 등록된 원격 MCP 서버는 응답에 scanner 블록이 함께 옵니다. Lowdown Scanner가 서버에 직접 연결해 관찰한 사실(initialize, tools/list까지만 호출하며 tool은 실행하지 않음)이고, interaction 데이터와 분리되어 success_rate에는 합산되지 않습니다. HTTP 상태는 해석 없이 관찰된 값 그대로 보여줍니다.
앱 로그를 도구 결과에 붙이기
도구 호출은 성공했는데 그 뒤의 앱(씬, 게임, 개발 서버)이 실패하는 경우가 있습니다. 진짜 에러는 앱의 로그 파일에만 찍혀서 에이전트는 모릅니다. --watch-log를 주면 tools/call 결과마다 직전 호출 이후 로그에 새로 찍힌 줄 중 --log-pattern에 맞는 줄이 결과 끝에 붙습니다. 에이전트가 따로 호출할 것은 없습니다. 로그 내용은 로컬에만 머물고 Lowdown에 기록되지 않습니다.
기록 방식 (0.1.17~)
프록시는 공개 API(POST /api/interactions)로 기록합니다. DB 키가 필요 없고 LOWDOWN_SUPABASE_URL / LOWDOWN_SUPABASE_KEY는 더 이상 쓰지 않습니다. LOWDOWN_RECORD=0이면 기록 없이 패스스루만 합니다.
tools/call결과의isError: true는 실패(tool_error)로 기록합니다.잘못된 요청(-32700/-32600/-32601/-32602: 형식 오류, 없는 도구, 잘못된 인자)은 서버 실패와 분리해
rejected_requests로 셉니다.success_rate에는 들어가지 않습니다.initialize,tools/list같은 비도구 요청은protocol_requests로 따로 셉니다.success_rate는organic기록만 계산합니다.seeded/synthetic은by_source로 따로 보여줍니다. 일부러 실패시키는 테스트는--test로 실행하면synthetic으로 남습니다.각 기록에는 그 시점의
server_version(initialize),schema_hash(tools/list, Scanner와 같은 계산),recorder_version이 함께 남습니다. 인자와 결과 내용은 기록하지 않습니다.--target을 주지 않으면 명령줄 전체가 아니라 패키지·파일 이름 하나만 라벨로 씁니다.
설계 원칙 (요약)
설정 없음: 프록시를 실행하면 모든 것이 자동으로 처리됩니다.
패스스루 우선: 기록 로직이 실패하거나 느려도 실제 MCP 통신은 절대 막지 않습니다.
사실만 기록: v0는 성공/실패/지연시간만 기록합니다. 품질 판단은 범위 밖입니다.
출처 구분: 모든 기록은
organic/seeded/synthetic으로 태깅됩니다.
자세한 배경과 설계 원칙은 DESIGN.md를 참고하세요.
Available Tools
4 toolscompare_toolsA
Compare 2 to 5 tools or agents by the interactions reported to Lowdown. Candidates are ordered by reported success rate (candidates without data last), with interaction count and confidence. Scanner observations are not used for the ordering. A suggestion is included only when the first candidate has at least 5 rated interactions.
| Name | Required | Description | Default |
|---|---|---|---|
| task_type | No | Filter by task type if you want task-specific comparison | |
| candidates | Yes | List of tool/agent identifiers to compare |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral burden and does substantial work: it discloses the ordering key (reported success rate), tie/edge handling (candidates without data last), an explicit data exclusion (scanner observations do not affect ordering), and the conditional suggestion rule requiring at least 5 rated interactions. It stops short of covering failure modes or whether the call is purely read-only, so it is not exhaustive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Four sentences, each carrying distinct information: purpose, ordering, data exclusion, suggestion condition. The core purpose is front-loaded and there is no filler or redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a read-only comparison tool with no output schema, the description explains what effectively comes back (candidate ordering, interaction count, confidence, conditional suggestion) and the rules that govern it. Remaining gaps are minor — no explicit statement of read-only safety, error behavior, or handling of invalid candidate identifiers.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so both parameters are already documented, and the description's '2 to 5' merely restates the min/maxItems constraints rather than adding format or syntax guidance. task_type is not addressed in the description at all. Baseline 3 is appropriate when the schema does the heavy lifting.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb (Compare) and resource (tools or agents) with a bounded scope of 2-5 items, plus the data source (interactions reported to Lowdown). This is clearly distinguishable from siblings like get_lowdown, get_node_stats, and record_interaction without opening any schema.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Usage is implied — you call this when you want to rank or contrast several tools/agents — but there is no explicit when-to-use versus get_lowdown or get_node_stats, and no stated prerequisites (e.g., that candidates must already be tracked). The reader must infer the selection context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_lowdownA
Look up what Lowdown has recorded about an MCP server, agent, tool, or service before choosing or connecting to it. For MCP Registry servers it returns, in order: a registry block (what the official MCP Registry declares, and changes in the last 30 days); a scanner block (daily Lowdown Scanner observations of initialize and tools/list over the last 30 days, one entry per day, days without an observation and why, the tool names observed, and declared versus observed version and hosts); and interactions reported by agents (count, outcomes, success rate). The success rate counts organic tool calls and agent reports only; protocol requests, rejected requests, and seeded or synthetic records are counted separately. These are recorded facts, not scores. A server outside the observed sample returns observed: false in scanner, which says nothing about its status.
| Name | Required | Description | Default |
|---|---|---|---|
| target | Yes | MCP Registry name with the mcp: prefix (e.g. 'mcp:io.github.user/server'), a short name, or an id such as 'agent:some-agent-id' |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden and does so substantively: it details the returned blocks, clarifies that the success rate excludes protocol/rejected/synthetic records, and pre-empts misreading by explaining that 'observed: false' says nothing about status. It does not cover auth or rate limits, keeping it short of a 5.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Front-loaded with the purpose, then organized by returned block in a logical order. It is dense and long, but nearly every clause conveys distinct semantics (block structure, exclusions, the observed:false caveat) rather than padding.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
No output schema and no annotations, so the description must explain return semantics itself — and it does, enumerating the registry, scanner, and interaction blocks plus their caveats. Nothing essential for interpreting the result is left out.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100% and the single 'target' parameter is thoroughly documented in the schema, including accepted formats. The description adds no parameter-level detail beyond what the schema already provides, so the baseline 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb ('look up') and resource ('what Lowdown has recorded about an MCP server, agent, tool, or service') with the scope of entities enumerated. The purpose is unambiguous and easily separable from get_node_stats or record_interaction.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly situates usage: 'before choosing or connecting to it', which tells the agent when this lookup is warranted. It stops short of naming an alternative sibling or a when-not condition, so it falls just below the top tier.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_node_statsB
Get your node's contribution stats and network position. Shows how much your proxy has contributed to the Lowdown network.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden, but for a zero-parameter read it only needs to signal that this is a passive lookup, which 'Get' and 'Shows' do. It does not state whether a node identity/auth is required or whether the stats are scoped to the caller's own proxy, which is the main behavioral ambiguity.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The core purpose is front-loaded in the first sentence, but the second sentence largely restates it, only adding the 'proxy' and 'Lowdown network' specifics. One of the two sentences is close to redundant.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
There is no output schema, so the description should characterize the return values; 'contribution stats and network position' gives a rough shape but no notion of pagination, units, or whether the result is empty for unregistered nodes. For a simple zero-param read this is adequate but not complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool takes no parameters, so there is no parameter semantics to explain and the baseline of 4 applies. The description correctly implies the node is identified implicitly by the caller rather than by an argument.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb and resource: 'Get your node's contribution stats and network position,' which is concrete and distinguishable from siblings like record_interaction or compare_tools. It stops short of explicitly contrasting itself with get_lowdown, which is the nearest conceptual sibling.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
There is no guidance on when to call this versus get_lowdown or the other siblings, and no prerequisites are stated. The agent must infer from the name that this is the per-node read counterpart to a network-level lookup.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
record_interactionA
Record an interaction with an agent, tool, or service after using it. Helps build the shared reputation dataset for the community. If the call was an intentional negative test (e.g. deliberately invalid input), set source to 'synthetic' so it is not counted as a failure of the target.
| Name | Required | Description | Default |
|---|---|---|---|
| actor | Yes | Your agent/system identifier | |
| source | No | organic (default) for real use; synthetic for tests, including intentional failure tests | |
| target | Yes | Identifier of what you used | |
| outcome | Yes | ||
| task_type | Yes | What kind of task was performed. e.g. 'web_search', 'code_gen' | |
| latency_ms | No | How long it took in milliseconds | |
| target_type | Yes | ||
| failure_type | No | Required when outcome is failure. Distinguish tool failure vs argument error. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must carry the full behavioral burden. It adds one valuable behavior: intentional negative tests recorded with source='synthetic' are not counted as target failures. However, it omits permissions, persistence, rate limits, and whether the record is public, which are important for a shared reputation-writing tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three sentences, front-loaded with the core action, then rationale, then the source edge case. No filler, and each sentence contributes necessary information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The description covers purpose and the key source nuance for a tool with no output schema and no annotations. It does not explain the required fields or failure_type requirement, relying on schema coverage; it also leaves out privacy/permission behavior, so an agent cannot fully predict side effects.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 75%, so the schema already documents most parameters. The description adds meaningful nuance beyond the schema for source by clarifying that intentional negative tests (e.g. deliberately invalid input) should be marked synthetic to avoid counting as a failure.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb and resource: record an interaction with an agent, tool, or service after using it. It is clearly distinguishable from the read-oriented siblings get_lowdown, get_node_stats, and compare_tools, though it does not explicitly name them.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It gives clear usage context ('after using it') and a conditional when-to-use rule for source='synthetic' with an example. It does not name when not to use it or compare to alternatives, but the sibling tools serve different purposes.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
1 tool update
v0.1.16- Changed
record_interaction1 field changed- added
Input schema / properties / source / descriptionAdded value: +"organic (default) for real use; synthetic for tests, including intentional failure tests"
2 tool updates
v0.1.15- Changed
get_lowdown1 field changed- changed
Input schema / properties / target / descriptionPrevious value: -"Identifier of the agent/tool/service. e.g. 'mcp:vendor/tool-name' or 'agent:some-agent-id'"New value: +"MCP Registry name with the mcp: prefix (e.g. 'mcp:io.github.user/server'), a short name, or an id such as 'agent:some-agent-id'"
- Changed
record_interaction1 field changed- added
Input schema / properties / failure_typeAdded value: +{ + "description": "Required when outcome is failure. Distinguish tool failure vs argument error.", + "enum": [ + "invalid_arguments", + "timeout", + "server_error", + "tool_error", + "unknown" + ], + "type": "string" +}
4 tool updates
v0.1.11- First observed
compare_tools - First observed
get_lowdown - First observed
get_node_stats - First observed
record_interaction
TDQS
Scored across 4 tools
Each tool targets a distinct operation: get_lowdown retrieves detailed recorded facts for a single target, compare_tools orders multiple candidates by interaction data, record_interaction writes new data, and get_node_stats reports the user's own node. The descriptions clearly delineate these boundaries with no meaningful overlap.
All tool names follow a consistent snake_case verb_noun pattern: get_lowdown, get_node_stats, record_interaction, compare_tools. The verbs (get, record, compare) are standard and predictable within the set.
Four tools is well-scoped for a reputation proxy that needs to support lookups, comparisons, contributions, and node stats. Each tool clearly earns its place without redundancy or bloat.
The core lifecycle of querying reputation (get_lowdown), comparing candidates (compare_tools), contributing data (record_interaction), and checking personal stats (get_node_stats) is covered. Minor gaps exist, such as no broad discovery/search or list operation for servers or agents, but core workflows are functional.
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