byte-protocol

byte_buy_data

Buy a single data packet from any PayPerByte feed via the x402 payment gateway. No subscription, no allowance, no prior on-chain setup — pay-per-call USDC settlement. The MCP server signs an EIP-3009 transferWithAuthorization on behalf of the wallet whose PRIVATE_KEY is configured, the x402 facilitator submits the tx, and the data comes back inline with the on-chain settlement tx hash. Use byte_subscribe instead if you want a continuous stream of broadcasts from a publisher. The catalog of available feed slugs lives at https://x402.payperbyte.io/feeds (free GET). GET data feeds (weather, earthquakes, …) need only feed; the 10 POST oracles — runtime-eol, threat-intel, address-reputation, pkg-verdict, sanctions-screen, reasoning-verdict, merchant-screen, positioning-snapshot, cctp-attestation-latency, regime-signal — additionally require a JSON body (the query) — supplying body switches this call to POST. Requires PRIVATE_KEY env var on the MCP server and USDC on the configured wallet. NOTE: paid feeds settle REAL USDC on Base mainnet (eip155:8453) — the exact price is quoted in the 402 challenge and listed per feed at https://x402.payperbyte.io/feeds — the signed EIP-712 attestation over the exact response bytes proves delivery, not that a verdict itself is correct. Use a dedicated wallet holding only what you intend to spend.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`body`	No	Optional JSON query body for POST oracles. Supplying it switches the call from GET to POST. Required by the verdict oracles, e.g. address-reputation {domain,address[,amount,chain]}, sanctions-screen {address\|name}, pkg-verdict {ecosystem,package[,version]}, reasoning-verdict {subject}. Omit for GET data feeds (weather, earthquakes, …).
`feed`	Yes	Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), merchant-screen ($0.100), positioning-snapshot ($0.030), cctp-attestation-latency ($0.010), regime-signal ($0.020). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)

Output Schema

TableJSON Schema

Name	Required	Description
`data`	No	Decoded feed payload returned by the publisher
`feed`	No	Echoed feed slug
`paid`	No	True if an x402 payment was made (false on free/cached feeds)
`error`	No	Error message if the buy failed
`payer`	No	Wallet that signed the EIP-3009 authorization
`price`	No	USDC paid for this packet (e.g. '$0.003000'); omitted on free feeds
`detail`	No	Additional error detail, if any
`status`	No	HTTP status of the (post-payment) gateway response
`txHash`	No	x402 settlement transaction hash
`verification`	No	Two-leg verify-before-act result: {gatewayVerified, hashMatch, signerMatch, recovered, attester, expired, deadline, checkedAt, embeddedAttestation, reason, note}. gatewayVerified=true means the GATEWAY delivered these exact bytes (signed by the pinned gateway attester) — it does NOT verify the per-feed publisher's embedded attestation (answer.attestation). When embeddedAttestation==='present', verify that leg before trusting the data (see note). expired=true means the receipt's EIP-712 deadline had already passed on arrival (deadline/checkedAt are UNIX-second strings); a freshly minted receipt cannot be expired, so that indicates a replayed/cached response or clock skew and the tool refuses (isError) even if the signature checks out.

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

Changed1 schema field changedSep 4, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), merchant-screen ($0.100), positioning-snapshot ($0.030), cctp-attestation-latency ($0.010), regime-signal ($0.020). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed1 schema field changedSep 1, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), merchant-screen ($0.100), positioning-snapshot ($0.030), cctp-attestation-latency ($0.010). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed1 schema field changedAug 25, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), merchant-screen ($0.100), positioning-snapshot ($0.030), cctp-attestation-latency ($0.010). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed1 schema field changedAug 22, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), merchant-screen ($0.100), positioning-snapshot ($0.030). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed1 schema field changedAug 2, 2026

changedOutput schema / properties / verification / description

Previous value: -"Two-leg verify-before-act result: {gatewayVerified, hashMatch, signerMatch, recovered, attester, embeddedAttestation, reason, note}. gatewayVerified=true means the GATEWAY delivered these exact bytes (signed by the pinned gateway attester) — it does NOT verify the per-feed publisher's embedded attestation (answer.attestation). When embeddedAttestation==='present', verify that leg before trusting the data (see note)."New value: +"Two-leg verify-before-act result: {gatewayVerified, hashMatch, signerMatch, recovered, attester, expired, deadline, checkedAt, embeddedAttestation, reason, note}. gatewayVerified=true means the GATEWAY delivered these exact bytes (signed by the pinned gateway attester) — it does NOT verify the per-feed publisher's embedded attestation (answer.attestation). When embeddedAttestation==='present', verify that leg before trusting the data (see note). expired=true means the receipt's EIP-712 deadline had already passed on arrival (deadline/checkedAt are UNIX-second strings); a freshly minted receipt cannot be expired, so that indicates a replayed/cached response or clock skew and the tool refuses (isError) even if the signature checks out."

Changed1 schema field changedJul 29, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), merchant-screen ($0.100), positioning-snapshot ($0.030). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed1 schema field changedJul 29, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), evidence-pack ($0.100), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), liquidation-stream ($0.030), positioning-snapshot ($0.030). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed1 schema field changedJul 15, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), evidence-pack ($0.100), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), liquidation-stream ($0.030), positioning-snapshot ($0.030). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed1 schema field changedJul 14, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), evidence-pack ($0.100), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), liquidation-stream ($0.030), positioning-snapshot ($0.030). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed3 schema fields changedJul 3, 2026

changedInput schema / properties / body / description

Previous value: -"Optional JSON query body for POST oracles. Supplying it switches the call from GET to POST. Required by the verdict oracles, e.g. address-reputation {domain,address[,amount,chain]}, sanctions-screen {address|name}, pkg-verdict {ecosystem,package[,version]}, reasoning-verdict {subject}. Omit for GET data feeds (weather, defi-yields, …)."New value: +"Optional JSON query body for POST oracles. Supplying it switches the call from GET to POST. Required by the verdict oracles, e.g. address-reputation {domain,address[,amount,chain]}, sanctions-screen {address|name}, pkg-verdict {ecosystem,package[,version]}, reasoning-verdict {subject}. Omit for GET data feeds (weather, earthquakes, …)."

changedInput schema / properties / feed / description

Previous value: -"Feed slug — one of: defi-yields ($0.030), weather ($0.0050), earthquakes ($0.0030), space-weather ($0.0030), news-feed ($0.010), code-pulse ($0.020), runtime-eol ($0.020), threat-intel ($0.050), x402-pulse ($0.010), stablecoin-rails ($0.030), perp-funding ($0.020), usc-statute ($0.050), evidence-pack ($0.100), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), liquidation-stream ($0.030), positioning-snapshot ($0.030), agent-compute ($0.050), agent-memory ($0.050), agent-tools ($0.050). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — one of: weather ($0.0050), earthquakes ($0.0030), runtime-eol ($0.020), threat-intel ($0.050), evidence-pack ($0.100), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), liquidation-stream ($0.030), positioning-snapshot ($0.030). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

changedOutput schema / properties / price / description

Previous value: -"USDC paid for this packet (e.g. '$0.001000'); omitted on free feeds"New value: +"USDC paid for this packet (e.g. '$0.003000'); omitted on free feeds"

Changed1 schema field changedJul 3, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — one of: defi-yields ($0.030), weather ($0.0050), earthquakes ($0.0030), space-weather ($0.0030), news-feed ($0.010), code-pulse ($0.020), runtime-eol ($0.020), threat-intel ($0.050), x402-pulse ($0.010), stablecoin-rails ($0.030), perp-funding ($0.020), usc-statute ($0.050), evidence-pack ($0.100), address-reputation ($0.150), pkg-verdict ($0.150), sanctions-screen ($0.150), reasoning-verdict ($0.150), liquidation-stream ($0.030), positioning-snapshot ($0.030), agent-compute ($0.050), agent-memory ($0.050), agent-tools ($0.050). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — one of: defi-yields ($0.030), weather ($0.0050), earthquakes ($0.0030), space-weather ($0.0030), news-feed ($0.010), code-pulse ($0.020), runtime-eol ($0.020), threat-intel ($0.050), x402-pulse ($0.010), stablecoin-rails ($0.030), perp-funding ($0.020), usc-statute ($0.050), evidence-pack ($0.100), address-reputation ($0.100), pkg-verdict ($0.100), sanctions-screen ($0.100), reasoning-verdict ($0.100), liquidation-stream ($0.030), positioning-snapshot ($0.030), agent-compute ($0.050), agent-memory ($0.050), agent-tools ($0.050). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed1 schema field changedJul 2, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — one of: defi-yields ($0.030), weather ($0.0050), earthquakes ($0.0030), space-weather ($0.0030), news-feed ($0.010), code-pulse ($0.020), runtime-eol ($0.020), threat-intel ($0.050), x402-pulse ($0.010), stablecoin-rails ($0.030), perp-funding ($0.020), usc-statute ($0.050), evidence-pack ($0.100), address-reputation ($0.150), pkg-verdict ($0.150), sanctions-screen ($0.150), reasoning-verdict ($0.150), liquidation-stream ($0.030), positioning-snapshot ($0.030), agent-compute ($0.050), agent-memory ($0.050), agent-tools ($0.050). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed1 schema field changedJul 1, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — one of: defi-yields ($0.030), weather ($0.0050), earthquakes ($0.0030), space-weather ($0.0030), news-feed ($0.010), code-pulse ($0.020), runtime-eol ($0.020), threat-intel ($0.050), x402-pulse ($0.010), stablecoin-rails ($0.030), perp-funding ($0.020), usc-statute ($0.050), evidence-pack ($0.020), address-reputation ($0.050), pkg-verdict ($0.050), sanctions-screen ($0.050), reasoning-verdict ($0.050), liquidation-stream ($0.030), positioning-snapshot ($0.030), agent-compute ($0.050), agent-memory ($0.050), agent-tools ($0.050). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed2 schema fields changedJun 27, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — one of: defi-yields ($0.030), weather ($0.0050), earthquakes ($0.0030), space-weather ($0.0030), news-feed ($0.010), code-pulse ($0.020), runtime-eol ($0.020), threat-intel ($0.050), x402-pulse ($0.010), stablecoin-rails ($0.030), perp-funding ($0.020), usc-statute ($0.050), evidence-pack ($0.020), address-reputation ($0.050), pkg-verdict ($0.050), sanctions-screen ($0.050), reasoning-verdict ($0.050), liquidation-stream ($0.030), positioning-snapshot ($0.030), agent-compute ($0.050), agent-memory ($0.050), agent-tools ($0.050). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

changedOutput schema / properties / verification / description

Previous value: -"Inline verify-before-act over the X-BYTE-Attestation receipt: {verified, hashMatch, signerMatch, recovered, attester, reason}. verified=true means the bytes are intact AND signed by the pinned gateway attester."New value: +"Two-leg verify-before-act result: {gatewayVerified, hashMatch, signerMatch, recovered, attester, embeddedAttestation, reason, note}. gatewayVerified=true means the GATEWAY delivered these exact bytes (signed by the pinned gateway attester) — it does NOT verify the per-feed publisher's embedded attestation (answer.attestation). When embeddedAttestation==='present', verify that leg before trusting the data (see note)."

Changed3 schema fields changedJun 25, 2026

addedInput schema / properties / body

Added value: +{
+  "additionalProperties": {},
+  "description": "Optional JSON query body for POST oracles. Supplying it switches the call from GET to POST. Required by the verdict oracles, e.g. address-reputation {domain,address[,amount,chain]}, sanctions-screen {address|name}, pkg-verdict {ecosystem,package[,version]}, reasoning-verdict {subject}. Omit for GET data feeds (weather, defi-yields, …).",
+  "propertyNames": {
+    "type": "string"
+  },
+  "type": "object"
+}

changedInput schema / properties / feed / description

Previous value: -"Feed slug — one of: defi-yields ($0.030), weather ($0.0050), earthquakes ($0.0030), space-weather ($0.0030), news-feed ($0.010), code-pulse ($0.020), runtime-eol ($0.020), threat-intel ($0.050), x402-pulse ($0.010), stablecoin-rails ($0.030), perp-funding ($0.020), usc-statute ($0.050), evidence-pack ($0.020), address-reputation ($0.050), pkg-verdict ($0.050), sanctions-screen ($0.050), reasoning-verdict ($0.050), liquidation-stream ($0.030), positioning-snapshot ($0.030), agent-compute ($0.050), agent-memory ($0.050), agent-tools ($0.050). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — see https://x402.payperbyte.io/feeds for the live catalog. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

addedOutput schema / properties / verification

Added value: +{
+  "additionalProperties": {},
+  "description": "Inline verify-before-act over the X-BYTE-Attestation receipt: {verified, hashMatch, signerMatch, recovered, attester, reason}. verified=true means the bytes are intact AND signed by the pinned gateway attester.",
+  "propertyNames": {
+    "type": "string"
+  },
+  "type": "object"
+}

Changed1 schema field changedJun 22, 2026

changedInput schema / properties / feed / description

Previous value: -"Feed slug — one of: weather, earthquakes, space-weather, news-feed, code-pulse, runtime-eol, threat-intel, btc-metrics, pkg-facts, cve-facts, wiki-facts, merchant-trust, crypto-top100, defi-yields, byte-status. (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"New value: +"Feed slug — one of: defi-yields ($0.030), weather ($0.0050), earthquakes ($0.0030), space-weather ($0.0030), news-feed ($0.010), code-pulse ($0.020), runtime-eol ($0.020), threat-intel ($0.050), x402-pulse ($0.010), stablecoin-rails ($0.030), perp-funding ($0.020), usc-statute ($0.050), evidence-pack ($0.020), address-reputation ($0.050), pkg-verdict ($0.050), sanctions-screen ($0.050), reasoning-verdict ($0.050), liquidation-stream ($0.030), positioning-snapshot ($0.030), agent-compute ($0.050), agent-memory ($0.050), agent-tools ($0.050). Full catalog: https://x402.payperbyte.io/feeds (free GET). (For fact-oracle Q&A use byte_query_fact instead — it uses a different request-response flow.)"

Changed8 schema fields changedJun 11, 2026

changedOutput schema / additionalProperties
```
Previous value: -falseNew value: +{}
```

addedOutput schema / properties / detail

Added value: +{
+  "description": "Additional error detail, if any",
+  "type": "string"
+}

addedOutput schema / properties / paid

Added value: +{
+  "description": "True if an x402 payment was made (false on free/cached feeds)",
+  "type": "boolean"
+}

addedOutput schema / properties / payer

Added value: +{
+  "description": "Wallet that signed the EIP-3009 authorization",
+  "type": "string"
+}

removedOutput schema / properties / payloadHash

Removed value: -{
-  "description": "keccak256 of the response payload",
-  "type": "string"
-}

addedOutput schema / properties / price

Added value: +{
+  "description": "USDC paid for this packet (e.g. '$0.001000'); omitted on free feeds",
+  "type": "string"
+}

removedOutput schema / properties / pricePaid

Removed value: -{
-  "description": "USDC paid for this packet (atomic)",
-  "type": "string"
-}

addedOutput schema / properties / status

Added value: +{
+  "description": "HTTP status of the (post-payment) gateway response",
+  "type": "number"
+}

Changed1 schema field changedMay 27, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": false,
+  "properties": {
+    "data": {
+      "description": "Decoded feed payload returned by the publisher"
+    },
+    "error": {
+      "description": "Error message if the buy failed",
+      "type": "string"
+    },
+    "feed": {
+      "description": "Echoed feed slug",
+      "type": "string"
+    },
+    "payloadHash": {
+      "description": "keccak256 of the response payload",
+      "type": "string"
+    },
+    "pricePaid": {
+      "description": "USDC paid for this packet (atomic)",
+      "type": "string"
+    },
+    "txHash": {
+      "description": "x402 settlement transaction hash",
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

First observedMay 25, 2026

TDQS

A5/5.0

Behavior5/5

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

The description goes far beyond the annotations by disclosing EIP-3009 transferWithAuthorization signing, the wallet PRIVATE_KEY requirement, USDC settlement on Base mainnet, and the real-money warning. It also truthfully notes that the EIP-712 attestation proves delivery, not correctness of a verdict, and advises using a dedicated wallet. The annotations (readOnlyHint=false, destructiveHint=false) are consistent with this behavior.

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

Conciseness5/5

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

Though lengthy, the description is information-dense and every sentence adds actionable detail: core purpose, alternatives, protocol mechanics, parameter behavior, prerequisite env vars, cost warnings, and a safety recommendation. The main action is front-loaded, and the structure flows logically from what → when → how → caution.

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

Completeness5/5

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

For a complex pay-per-call tool with two parameters, an output schema, and a payment gateway in the loop, the description is remarkably complete: it covers prerequisites (PRIVATE_KEY, funded wallet), per-feed pricing, GET vs POST logic, settlement network, attestation semantics, and alternative tools. Nothing an agent needs to call it correctly is missing.

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

Parameters5/5

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

Schema coverage is 100%, and the description adds substantial value by listing each feed slug with its per-call price, explaining that `body` switches GET to POST, giving concrete examples (address-reputation, sanctions-screen, pkg-verdict), and clarifying which feeds require the body. This is more than the schema alone provides.

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

Purpose5/5

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

The description opens with a specific verb+resource statement: 'Buy a single data packet from any PayPerByte feed via the x402 payment gateway.' It also explicitly differentiates from byte_subscribe (continuous stream) and byte_query_fact (fact-oracle Q&A), so an agent can disambiguate the tool without opening schemas.

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

Usage Guidelines5/5

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

Includes explicit routing guidance: 'Use byte_subscribe instead if you want a continuous stream' and points to byte_query_fact for fact-oracle questions. It further explains when to supply `body` — GET data feeds need only `feed`, while the 10 POST oracles require a JSON body — and directs the agent to the free catalog URL for available slugs.

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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TDQS

A4.3/5.0

Disambiguation5/5

Each tool targets a distinct action or resource, and overlapping functions (buy_data vs subscribe, check_subscription vs list_my_subscriptions) are explicitly differentiated in descriptions. No two tools appear to do the same thing.

Naming Consistency4/5

Most tools follow the byte_verb_noun pattern (e.g., byte_buy_data, byte_get_publisher), but a few deviate: byte_subscription_health uses a noun phrase, and byte_unsubscribe lacks an explicit object. The consistent byte_ prefix keeps the set recognizable.

Tool Count5/5

15 tools is at the upper edge of the well-scoped range, and each tool serves a distinct purpose within the PayPerByte protocol—discovery, purchasing, publishing, verification, and account management. No redundant or filler tools.

Completeness4/5

Core lifecycle coverage is strong: list/search, subscribe/unsubscribe, buy, publish, register, verify, health, and network stats. Minor gaps exist, such as no explicit tool to fetch historical streamed messages or update a publisher schema, but these are workable.

byte_buy_data

Input Schema

Output Schema

Schema Changelog

TDQS

Glama MCP Gateway

TDQS

Resources