GradeTV

Search channels

search_channels

Read-onlyIdempotent

Searches public channels (filters: q, country, category, language, network, quality, playable; kind=radio for radio stations, tag for a radio tag; sort=score orders by the health that a third party measures, sort=votes by the radio votes; online=1 returns only channels seen online in the last 48 h). This is the main entry point of the product. The response changes with the browser, the system and the country of the caller: each channel has social.your_fails, the result for YOUR environment, so the response is Cache-Control: private.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`q`	No	Free text in the channel name and its aliases (full-text search).
`tag`	No	Radio station tag (free vocabulary, for example `mpb` or `news`); see `GET /api/tags`.
`city`	No	City, catalog code.
`kind`	No	`tv` (default) is the TV catalog; `radio` is the radio stations; `all` is both. Without `kind`, radio never appears.	tv
`sort`	No	`score` orders by the health that a third party measures, best first; channels with no measurement go to the end. `votes` orders by the votes recorded for the station (radio). `name` is alphabetical order.	name
`guide`	No	`1` returns only channels with a TV guide (EPG).	0
`online`	No	`1` returns only channels that the source saw online in the 48 h before the last catalog reload (`health_ext.online`). When the catalog has not reloaded for more than 48 h, the filter returns no channel.	0
`country`	No	Country of the channel, ISO 3166-1 alpha-2.
`network`	No	Exact name of the network or broadcaster.
`quality`	No	Exact quality of the stream.
`category`	No	Category ID from the catalog.
`language`	No	Language of the channel, ISO 639-3.
`playable`	No	`0` also includes channels with no known usable stream.	1
`subdivision`	No	State or province, catalog code.

Schema Changelog

Changes observed during successful MCP inspections.

Changed14 schema fields changedOct 15, 2026

changedInput schema / properties / category / description

Previous value: -"ID de categoria do catálogo."New value: +"Category ID from the catalog."

changedInput schema / properties / city / description

Previous value: -"Cidade, código do catálogo."New value: +"City, catalog code."

changedInput schema / properties / country / description

Previous value: -"País do canal, ISO 3166-1 alpha-2."New value: +"Country of the channel, ISO 3166-1 alpha-2."

changedInput schema / properties / guide / description

Previous value: -"`1` traz só canal com grade de programação (EPG)."New value: +"`1` returns only channels with a TV guide (EPG)."

changedInput schema / properties / kind / description

Previous value: -"`tv` (padrão) é o catálogo de TV; `radio` são as estações de rádio; `all` junta os dois. Sem `kind`, rádio nunca aparece."New value: +"`tv` (default) is the TV catalog; `radio` is the radio stations; `all` is both. Without `kind`, radio never appears."

changedInput schema / properties / language / description

Previous value: -"Idioma do canal, ISO 639-3."New value: +"Language of the channel, ISO 639-3."

changedInput schema / properties / network / description

Previous value: -"Nome exato da rede/emissora."New value: +"Exact name of the network or broadcaster."

changedInput schema / properties / online / description

Previous value: -"`1` traz só canal visto online pela fonte nas 48 h anteriores à última recarga do catálogo (`health_ext.online`); com o catálogo parado há mais de 48 h o filtro não devolve ninguém."New value: +"`1` returns only channels that the source saw online in the 48 h before the last catalog reload (`health_ext.online`). When the catalog has not reloaded for more than 48 h, the filter returns no channel."

changedInput schema / properties / playable / description

Previous value: -"`0` inclui canal sem stream utilizável conhecido."New value: +"`0` also includes channels with no known usable stream."

changedInput schema / properties / q / description

Previous value: -"Texto livre no nome e nos apelidos do canal (busca full-text)."New value: +"Free text in the channel name and its aliases (full-text search)."

changedInput schema / properties / quality / description

Previous value: -"Qualidade exata do stream."New value: +"Exact quality of the stream."

changedInput schema / properties / sort / description

Previous value: -"`score` ordena pela saúde medida por terceiro, melhor primeiro; canal não medido vai para o fim. `votes` ordena pelos votos registrados para a estação (rádio). `name` é a ordem alfabética."New value: +"`score` orders by the health that a third party measures, best first; channels with no measurement go to the end. `votes` orders by the votes recorded for the station (radio). `name` is alphabetical order."

changedInput schema / properties / subdivision / description

Previous value: -"Estado/província, código do catálogo."New value: +"State or province, catalog code."

changedInput schema / properties / tag / description

Previous value: -"Tag da estação de rádio (vocabulário livre, ex. `mpb`, `news`); veja `GET /api/tags`."New value: +"Radio station tag (free vocabulary, for example `mpb` or `news`); see `GET /api/tags`."

Changed7 schema fields changedSep 20, 2026

changedInput schema / properties / category / description

Previous value: -"ID de categoria do iptv-org."New value: +"ID de categoria do catálogo."

changedInput schema / properties / city / description

Previous value: -"Cidade, código do iptv-org."New value: +"Cidade, código do catálogo."

changedInput schema / properties / kind / description

Previous value: -"`tv` (padrão) é o catálogo de TV; `radio` são as estações do Radio Browser; `all` junta os dois. Sem `kind`, rádio nunca aparece."New value: +"`tv` (padrão) é o catálogo de TV; `radio` são as estações de rádio; `all` junta os dois. Sem `kind`, rádio nunca aparece."

changedInput schema / properties / online / description

Previous value: -"`1` traz só canal visto online pela fonte (IPTV Nexus para TV, Radio Browser para rádio) nas 48 h anteriores à última recarga do catálogo (`health_ext.online`); com o catálogo parado há mais de 48 h o filtro não devolve ninguém."New value: +"`1` traz só canal visto online pela fonte nas 48 h anteriores à última recarga do catálogo (`health_ext.online`); com o catálogo parado há mais de 48 h o filtro não devolve ninguém."

changedInput schema / properties / sort / description

Previous value: -"`score` ordena pela saúde medida por terceiro (IPTV Nexus), melhor primeiro; canal não medido vai para o fim. `votes` ordena pelos votos da comunidade do Radio Browser (rádio). `name` é a ordem alfabética."New value: +"`score` ordena pela saúde medida por terceiro, melhor primeiro; canal não medido vai para o fim. `votes` ordena pelos votos registrados para a estação (rádio). `name` é a ordem alfabética."

changedInput schema / properties / subdivision / description

Previous value: -"Estado/província, código do iptv-org."New value: +"Estado/província, código do catálogo."

changedInput schema / properties / tag / description

Previous value: -"Tag da estação de rádio (vocabulário livre do Radio Browser, ex. `mpb`, `news`); veja `GET /api/tags`."New value: +"Tag da estação de rádio (vocabulário livre, ex. `mpb`, `news`); veja `GET /api/tags`."

Changed1 schema field changedSep 17, 2026

removedInput schema / properties / nsfw

Removed value: -{
-  "default": "0",
-  "description": "`1` inclui conteúdo adulto; exige consentimento 18+ gravado, senão 403.",
-  "enum": [
-    "0",
-    "1"
-  ],
-  "type": "string"
-}

Changed25 schema fields changedSep 6, 2026

addedInput schema / properties / category / description
```
Added value: +"ID de categoria do iptv-org."
```
addedInput schema / properties / city / description
```
Added value: +"Cidade, código do iptv-org."
```

addedInput schema / properties / country / description

Added value: +"País do canal, ISO 3166-1 alpha-2."

addedInput schema / properties / guide / default
```
Added value: +"0"
```

addedInput schema / properties / guide / description

Added value: +"`1` traz só canal com grade de programação (EPG)."

addedInput schema / properties / guide / enum
```
Added value: +[
+  "0",
+  "1"
+]
```
addedInput schema / properties / kind / default
```
Added value: +"tv"
```

addedInput schema / properties / kind / description

Added value: +"`tv` (padrão) é o catálogo de TV; `radio` são as estações do Radio Browser; `all` junta os dois. Sem `kind`, rádio nunca aparece."

addedInput schema / properties / language / description
```
Added value: +"Idioma do canal, ISO 639-3."
```
addedInput schema / properties / network / description
```
Added value: +"Nome exato da rede/emissora."
```
addedInput schema / properties / nsfw / default
```
Added value: +"0"
```

addedInput schema / properties / nsfw / description

Added value: +"`1` inclui conteúdo adulto; exige consentimento 18+ gravado, senão 403."

addedInput schema / properties / nsfw / enum
```
Added value: +[
+  "0",
+  "1"
+]
```
addedInput schema / properties / online / default
```
Added value: +"0"
```

addedInput schema / properties / online / description

Added value: +"`1` traz só canal visto online pela fonte (IPTV Nexus para TV, Radio Browser para rádio) nas 48 h anteriores à última recarga do catálogo (`health_ext.online`); com o catálogo parado há mais de 48 h o filtro não devolve ninguém."

addedInput schema / properties / online / enum
```
Added value: +[
+  "0",
+  "1"
+]
```
addedInput schema / properties / playable / default
```
Added value: +"1"
```

addedInput schema / properties / playable / description

Added value: +"`0` inclui canal sem stream utilizável conhecido."

addedInput schema / properties / playable / enum
```
Added value: +[
+  "0",
+  "1"
+]
```

addedInput schema / properties / q / description

Added value: +"Texto livre no nome e nos apelidos do canal (busca full-text)."

addedInput schema / properties / quality / description
```
Added value: +"Qualidade exata do stream."
```
addedInput schema / properties / sort / default
```
Added value: +"name"
```

addedInput schema / properties / sort / description

Added value: +"`score` ordena pela saúde medida por terceiro (IPTV Nexus), melhor primeiro; canal não medido vai para o fim. `votes` ordena pelos votos da comunidade do Radio Browser (rádio). `name` é a ordem alfabética."

addedInput schema / properties / subdivision / description

Added value: +"Estado/província, código do iptv-org."

addedInput schema / properties / tag / description

Added value: +"Tag da estação de rádio (vocabulário livre do Radio Browser, ex. `mpb`, `news`); veja `GET /api/tags`."

First observedSep 6, 2026

TDQS

A3.6/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already cover the read-only, idempotent, non-destructive profile, so the bar is lower. The description goes beyond them with genuinely useful behavior: the response varies by the caller's browser, system and country, each channel carries `social.your_fails` for the caller's environment, and the response is `Cache-Control: private`. That is real context an agent could not derive from the annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the verb and resource, then three compact sentences. The large parenthetical packing most filters is dense but information-bearing rather than padding, so it earns its space despite being a run-on list.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 14-parameter tool with no output schema, the description does well to disclose the environment-dependent response and the `social.your_fails` field. It stops short of describing the response shape, pagination, or default result set size, which leaves gaps for a tool of this complexity.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents all 14 parameters and the 3 baseline applies. The description largely restates filter semantics (q, country, category, language, network, quality, playable, kind, sort, online) that the schema already provides, adding only minor nuance such as sort=score ordering rationale.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ("Searches public channels") and positions itself as "the main entry point of the product," which helps an agent distinguish it from single-channel siblings like get_channel. It enumerates the filter vocabulary, but never explicitly contrasts itself with siblings (e.g., get_channel, channel_health), so sibling differentiation is implied rather than stated.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The claim that it is "the main entry point of the product" is a light usage cue, and the note that "without kind, radio never appears" plus the online-filter 48h caveat tells the agent how filters behave. However, there is no explicit when-to-use/when-not-to-use guidance and no named alternative tool for narrower needs (single channel lookup, tag listing).

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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