feat(opencode): bridge global OTel tracer for AI SDK telemetry

The existing Effect Otlp.layerJson (merged via #21387) instruments Effect services but does not register a global OTel tracer provider. The AI SDK's experimental_telemetry reads from the global provider, so its spans were silently dropped. This adds a lightweight BasicTracerProvider bridge that registers globally when OTEL_EXPORTER_OTLP_ENDPOINT is set, using the same endpoint and headers the Effect layer already reads. AI SDK spans (ai.streamText, ai.toolCall, prompt/response content, token counts) now export alongside Effect service spans to any OTLP/HTTP collector. Also enables recordInputs/recordOutputs on both streamText and generateObject call sites so full message content is captured as span attributes.
2026-05-07 17:20:22 +08:00 · 2026-04-09 22:30:22 -04:00
6 changed files with 121 additions and 3 deletions
--- a/bun.lock
+++ b/bun.lock
@@ -358,6 +358,11 @@
        "@opencode-ai/sdk": "workspace:*",
        "@opencode-ai/util": "workspace:*",
        "@openrouter/ai-sdk-provider": "2.4.2",
+        "@opentelemetry/api": "1.9.1",
+        "@opentelemetry/exporter-trace-otlp-http": "0.214.0",
+        "@opentelemetry/resources": "2.6.1",
+        "@opentelemetry/sdk-trace-base": "2.6.1",
+        "@opentelemetry/semantic-conventions": "1.40.0",
        "@opentui/core": "0.1.97",
        "@opentui/solid": "0.1.97",
        "@parcel/watcher": "2.5.1",
@@ -627,6 +632,7 @@
  "trustedDependencies": [
    "esbuild",
    "tree-sitter-powershell",
+    "protobufjs",
    "electron",
    "web-tree-sitter",
    "tree-sitter-bash",
@@ -1541,7 +1547,27 @@

    "@openrouter/ai-sdk-provider": ["@openrouter/ai-sdk-provider@2.4.2", "", { "peerDependencies": { "ai": "^6.0.0", "zod": "^3.25.0 || ^4.0.0" } }, "sha512-uRQZ4da77gru1I7/lNGJhKbqEIY7o/sPsLlbCM97VY9muGDjM/TaJzuwqIviqKTtXLzF0WDj5qBAi6FhxjvlSg=="],

-    "@opentelemetry/api": ["@opentelemetry/api@1.9.0", "", {}, "sha512-3giAOQvZiH5F9bMlMiv8+GSPMeqg0dbaeo58/0SlA9sxSqZhnUtxzX9/2FzyhS9sWQf5S0GJE0AKBrFqjpeYcg=="],
+    "@opentelemetry/api": ["@opentelemetry/api@1.9.1", "", {}, "sha512-gLyJlPHPZYdAk1JENA9LeHejZe1Ti77/pTeFm/nMXmQH/HFZlcS/O2XJB+L8fkbrNSqhdtlvjBVjxwUYanNH5Q=="],
+
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+
+    "@opentelemetry/core": ["@opentelemetry/core@2.6.1", "", { "dependencies": { "@opentelemetry/semantic-conventions": "^1.29.0" }, "peerDependencies": { "@opentelemetry/api": ">=1.0.0 <1.10.0" } }, "sha512-8xHSGWpJP9wBxgBpnqGL0R3PbdWQndL1Qp50qrg71+B28zK5OQmUgcDKLJgzyAAV38t4tOyLMGDD60LneR5W8g=="],
+
+    "@opentelemetry/exporter-trace-otlp-http": ["@opentelemetry/exporter-trace-otlp-http@0.214.0", "", { "dependencies": { "@opentelemetry/core": "2.6.1", "@opentelemetry/otlp-exporter-base": "0.214.0", "@opentelemetry/otlp-transformer": "0.214.0", "@opentelemetry/resources": "2.6.1", "@opentelemetry/sdk-trace-base": "2.6.1" }, "peerDependencies": { "@opentelemetry/api": "^1.3.0" } }, "sha512-kIN8nTBMgV2hXzV/a20BCFilPZdAIMYYJGSgfMMRm/Xa+07y5hRDS2Vm12A/z8Cdu3Sq++ZvJfElokX2rkgGgw=="],
+
+    "@opentelemetry/otlp-exporter-base": ["@opentelemetry/otlp-exporter-base@0.214.0", "", { "dependencies": { "@opentelemetry/core": "2.6.1", "@opentelemetry/otlp-transformer": "0.214.0" }, "peerDependencies": { "@opentelemetry/api": "^1.3.0" } }, "sha512-u1Gdv0/E9wP+apqWf7Wv2npXmgJtxsW2XL0TEv9FZloTZRuMBKmu8cYVXwS4Hm3q/f/3FuCnPTgiwYvIqRSpRg=="],
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+
+    "@opentelemetry/resources": ["@opentelemetry/resources@2.6.1", "", { "dependencies": { "@opentelemetry/core": "2.6.1", "@opentelemetry/semantic-conventions": "^1.29.0" }, "peerDependencies": { "@opentelemetry/api": ">=1.3.0 <1.10.0" } }, "sha512-lID/vxSuKWXM55XhAKNoYXu9Cutoq5hFdkbTdI/zDKQktXzcWBVhNsOkiZFTMU9UtEWuGRNe0HUgmsFldIdxVA=="],
+
+    "@opentelemetry/sdk-logs": ["@opentelemetry/sdk-logs@0.214.0", "", { "dependencies": { "@opentelemetry/api-logs": "0.214.0", "@opentelemetry/core": "2.6.1", "@opentelemetry/resources": "2.6.1", "@opentelemetry/semantic-conventions": "^1.29.0" }, "peerDependencies": { "@opentelemetry/api": ">=1.4.0 <1.10.0" } }, "sha512-zf6acnScjhsaBUU22zXZ/sLWim1dfhUAbGXdMmHmNG3LfBnQ3DKsOCITb2IZwoUsNNMTogqFKBnlIPPftUgGwA=="],
+
+    "@opentelemetry/sdk-metrics": ["@opentelemetry/sdk-metrics@2.6.1", "", { "dependencies": { "@opentelemetry/core": "2.6.1", "@opentelemetry/resources": "2.6.1" }, "peerDependencies": { "@opentelemetry/api": ">=1.9.0 <1.10.0" } }, "sha512-9t9hJHX15meBy2NmTJxL+NJfXmnausR2xUDvE19XQce0Qi/GBtDGamU8nS1RMbdgDmhgpm3VaOu2+fiS/SfTpQ=="],
+
+    "@opentelemetry/sdk-trace-base": ["@opentelemetry/sdk-trace-base@2.6.1", "", { "dependencies": { "@opentelemetry/core": "2.6.1", "@opentelemetry/resources": "2.6.1", "@opentelemetry/semantic-conventions": "^1.29.0" }, "peerDependencies": { "@opentelemetry/api": ">=1.3.0 <1.10.0" } }, "sha512-r86ut4T1e8vNwB35CqCcKd45yzqH6/6Wzvpk2/cZB8PsPLlZFTvrh8yfOS3CYZYcUmAx4hHTZJ8AO8Dj8nrdhw=="],
+
+    "@opentelemetry/semantic-conventions": ["@opentelemetry/semantic-conventions@1.40.0", "", {}, "sha512-cifvXDhcqMwwTlTK04GBNeIe7yyo28Mfby85QXFe1Yk8nmi36Ab/5UQwptOx84SsoGNRg+EVSjwzfSZMy6pmlw=="],

    "@opentui/core": ["@opentui/core@0.1.97", "", { "dependencies": { "bun-ffi-structs": "0.1.2", "diff": "8.0.2", "jimp": "1.6.0", "marked": "17.0.1", "yoga-layout": "3.2.1" }, "optionalDependencies": { "@dimforge/rapier2d-simd-compat": "^0.17.3", "@opentui/core-darwin-arm64": "0.1.97", "@opentui/core-darwin-x64": "0.1.97", "@opentui/core-linux-arm64": "0.1.97", "@opentui/core-linux-x64": "0.1.97", "@opentui/core-win32-arm64": "0.1.97", "@opentui/core-win32-x64": "0.1.97", "bun-webgpu": "0.1.5", "planck": "^1.4.2", "three": "0.177.0" }, "peerDependencies": { "web-tree-sitter": "0.25.10" } }, "sha512-2ENH0Dc4NUAeHeeQCQhF1lg68RuyntOUP68UvortvDqTz/hqLG0tIwF+DboCKtWi8Nmao4SAQEJ7lfmyQNEDOQ=="],

@@ -1697,6 +1723,26 @@

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+    "@protobufjs/aspromise": ["@protobufjs/aspromise@1.1.2", "", {}, "sha512-j+gKExEuLmKwvz3OgROXtrJ2UG2x8Ch2YZUxahh+s1F2HZ+wAceUNLkvy6zKCPVRkU++ZWQrdxsUeQXmcg4uoQ=="],
+
+    "@protobufjs/base64": ["@protobufjs/base64@1.1.2", "", {}, "sha512-AZkcAA5vnN/v4PDqKyMR5lx7hZttPDgClv83E//FMNhR2TMcLUhfRUBHCmSl0oi9zMgDDqRUJkSxO3wm85+XLg=="],
+
+    "@protobufjs/codegen": ["@protobufjs/codegen@2.0.4", "", {}, "sha512-YyFaikqM5sH0ziFZCN3xDC7zeGaB/d0IUb9CATugHWbd1FRFwWwt4ld4OYMPWu5a3Xe01mGAULCdqhMlPl29Jg=="],
+
+    "@protobufjs/eventemitter": ["@protobufjs/eventemitter@1.1.0", "", {}, "sha512-j9ednRT81vYJ9OfVuXG6ERSTdEL1xVsNgqpkxMsbIabzSo3goCjDIveeGv5d03om39ML71RdmrGNjG5SReBP/Q=="],
+
+    "@protobufjs/fetch": ["@protobufjs/fetch@1.1.0", "", { "dependencies": { "@protobufjs/aspromise": "^1.1.1", "@protobufjs/inquire": "^1.1.0" } }, "sha512-lljVXpqXebpsijW71PZaCYeIcE5on1w5DlQy5WH6GLbFryLUrBD4932W/E2BSpfRJWseIL4v/KPgBFxDOIdKpQ=="],
+
+    "@protobufjs/float": ["@protobufjs/float@1.0.2", "", {}, "sha512-Ddb+kVXlXst9d+R9PfTIxh1EdNkgoRe5tOX6t01f1lYWOvJnSPDBlG241QLzcyPdoNTsblLUdujGSE4RzrTZGQ=="],
+
+    "@protobufjs/inquire": ["@protobufjs/inquire@1.1.0", "", {}, "sha512-kdSefcPdruJiFMVSbn801t4vFK7KB/5gd2fYvrxhuJYg8ILrmn9SKSX2tZdV6V+ksulWqS7aXjBcRXl3wHoD9Q=="],
+
+    "@protobufjs/path": ["@protobufjs/path@1.1.2", "", {}, "sha512-6JOcJ5Tm08dOHAbdR3GrvP+yUUfkjG5ePsHYczMFLq3ZmMkAD98cDgcT2iA1lJ9NVwFd4tH/iSSoe44YWkltEA=="],
+
+    "@protobufjs/pool": ["@protobufjs/pool@1.1.0", "", {}, "sha512-0kELaGSIDBKvcgS4zkjz1PeddatrjYcmMWOlAuAPwAeccUrPHdUqo/J6LiymHHEiJT5NrF1UVwxY14f+fy4WQw=="],
+
+    "@protobufjs/utf8": ["@protobufjs/utf8@1.1.0", "", {}, "sha512-Vvn3zZrhQZkkBE8LSuW3em98c0FwgO4nxzv6OdSxPKJIEKY2bGbHn+mhGIPerzI4twdxaP8/0+06HBpwf345Lw=="],
+
    "@radix-ui/colors": ["@radix-ui/colors@1.0.1", "", {}, "sha512-xySw8f0ZVsAEP+e7iLl3EvcBXX7gsIlC1Zso/sPBW9gIWerBTgz6axrjU+MZ39wD+WFi5h5zdWpsg3+hwt2Qsg=="],

    "@radix-ui/primitive": ["@radix-ui/primitive@1.0.1", "", { "dependencies": { "@babel/runtime": "^7.13.10" } }, "sha512-yQ8oGX2GVsEYMWGxcovu1uGWPCxV5BFfeeYxqPmuAzUyLT9qmaMXSAhXpb0WrspIeqYzdJpkh2vHModJPgRIaw=="],
@@ -4165,6 +4211,8 @@

    "proto-list": ["proto-list@1.2.4", "", {}, "sha512-vtK/94akxsTMhe0/cbfpR+syPuszcuwhqVjJq26CuNDgFGj682oRBXOP5MJpv2r7JtE8MsiepGIqvvOTBwn2vA=="],

+    "protobufjs": ["protobufjs@7.5.4", "", { "dependencies": { "@protobufjs/aspromise": "^1.1.2", "@protobufjs/base64": "^1.1.2", "@protobufjs/codegen": "^2.0.4", "@protobufjs/eventemitter": "^1.1.0", "@protobufjs/fetch": "^1.1.0", "@protobufjs/float": "^1.0.2", "@protobufjs/inquire": "^1.1.0", "@protobufjs/path": "^1.1.2", "@protobufjs/pool": "^1.1.0", "@protobufjs/utf8": "^1.1.0", "@types/node": ">=13.7.0", "long": "^5.0.0" } }, "sha512-CvexbZtbov6jW2eXAvLukXjXUW1TzFaivC46BpWc/3BpcCysb5Vffu+B3XHMm8lVEuy2Mm4XGex8hBSg1yapPg=="],
+
    "proxy-addr": ["proxy-addr@2.0.7", "", { "dependencies": { "forwarded": "0.2.0", "ipaddr.js": "1.9.1" } }, "sha512-llQsMLSUDUPT44jdrU/O37qlnifitDP+ZwrmmZcoSKyLKvtZxpyV0n2/bD/N4tBAAZ/gJEdZU7KMraoK1+XYAg=="],

    "proxy-from-env": ["proxy-from-env@2.1.0", "", {}, "sha512-cJ+oHTW1VAEa8cJslgmUZrc+sjRKgAKl3Zyse6+PV38hZe/V6Z14TbCuXcan9F9ghlz4QrFr2c92TNF82UkYHA=="],
@@ -5551,6 +5599,8 @@

    "ai/@ai-sdk/gateway": ["@ai-sdk/gateway@3.0.91", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@ai-sdk/provider-utils": "4.0.23", "@vercel/oidc": "3.1.0" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-J39Dh6Gyg6HjG3A7OFKnJMp3QyZ3Eex+XDiX8aFBdRwwZm3jGWaMhkCxQPH7yiQ9kRiErZwHXX/Oexx4SyGGGA=="],

+    "ai/@opentelemetry/api": ["@opentelemetry/api@1.9.0", "", {}, "sha512-3giAOQvZiH5F9bMlMiv8+GSPMeqg0dbaeo58/0SlA9sxSqZhnUtxzX9/2FzyhS9sWQf5S0GJE0AKBrFqjpeYcg=="],
+
    "ai-gateway-provider/@openrouter/ai-sdk-provider": ["@openrouter/ai-sdk-provider@2.3.3", "", { "peerDependencies": { "ai": "^6.0.0", "zod": "^3.25.0 || ^4.0.0" } }, "sha512-4fVteGkVedc7fGoA9+qJs4tpYwALezMq14m2Sjub3KmyRlksCbK+WJf67NPdGem8+NZrV2tAN42A1NU3+SiV3w=="],

    "ajv-keywords/ajv": ["ajv@6.14.0", "", { "dependencies": { "fast-deep-equal": "^3.1.1", "fast-json-stable-stringify": "^2.0.0", "json-schema-traverse": "^0.4.1", "uri-js": "^4.2.2" } }, "sha512-IWrosm/yrn43eiKqkfkHis7QioDleaXQHdDVPKg0FSwwd/DuvyX79TZnFOnYpB7dcsFAMmtFztZuXPDvSePkFw=="],
@@ -6183,6 +6233,8 @@

    "@aws-sdk/xml-builder/fast-xml-parser/strnum": ["strnum@2.2.2", "", {}, "sha512-DnR90I+jtXNSTXWdwrEy9FakW7UX+qUZg28gj5fk2vxxl7uS/3bpI4fjFYVmdK9etptYBPNkpahuQnEwhwECqA=="],

+    "@azure/core-http/@azure/core-tracing/@opentelemetry/api": ["@opentelemetry/api@1.9.0", "", {}, "sha512-3giAOQvZiH5F9bMlMiv8+GSPMeqg0dbaeo58/0SlA9sxSqZhnUtxzX9/2FzyhS9sWQf5S0GJE0AKBrFqjpeYcg=="],
+
    "@azure/core-http/xml2js/sax": ["sax@1.6.0", "", {}, "sha512-6R3J5M4AcbtLUdZmRv2SygeVaM7IhrLXu9BmnOGmmACak8fiUtOsYNWUS4uK7upbmHIBbLBeFeI//477BKLBzA=="],

    "@azure/core-xml/fast-xml-parser/strnum": ["strnum@2.2.2", "", {}, "sha512-DnR90I+jtXNSTXWdwrEy9FakW7UX+qUZg28gj5fk2vxxl7uS/3bpI4fjFYVmdK9etptYBPNkpahuQnEwhwECqA=="],
--- a/packages/opencode/package.json
+++ b/packages/opencode/package.json
@@ -117,6 +117,11 @@
    "@opencode-ai/sdk": "workspace:*",
    "@opencode-ai/util": "workspace:*",
    "@openrouter/ai-sdk-provider": "2.4.2",
+    "@opentelemetry/api": "1.9.1",
+    "@opentelemetry/exporter-trace-otlp-http": "0.214.0",
+    "@opentelemetry/resources": "2.6.1",
+    "@opentelemetry/sdk-trace-base": "2.6.1",
+    "@opentelemetry/semantic-conventions": "1.40.0",
    "@opentui/core": "0.1.97",
    "@opentui/solid": "0.1.97",
    "@parcel/watcher": "2.5.1",
--- a/packages/opencode/src/agent/agent.ts
+++ b/packages/opencode/src/agent/agent.ts
@@ -13,6 +13,7 @@ import PROMPT_COMPACTION from "./prompt/compaction.txt"
 import PROMPT_EXPLORE from "./prompt/explore.txt"
 import PROMPT_SUMMARY from "./prompt/summary.txt"
 import PROMPT_TITLE from "./prompt/title.txt"
+import { Flag } from "@/flag/flag"
 import { Permission } from "@/permission"
 import { mergeDeep, pipe, sortBy, values } from "remeda"
 import { Global } from "@/global"
@@ -347,7 +348,9 @@ export namespace Agent {

          const params = {
            experimental_telemetry: {
-              isEnabled: cfg.experimental?.openTelemetry,
+              isEnabled: cfg.experimental?.openTelemetry || !!Flag.OTEL_EXPORTER_OTLP_ENDPOINT,
+              recordInputs: true,
+              recordOutputs: true,
              metadata: {
                userId: cfg.username ?? "unknown",
              },
--- a/packages/opencode/src/index.ts
+++ b/packages/opencode/src/index.ts
@@ -1,3 +1,4 @@
+import "./otel-bridge.js"
 import yargs from "yargs"
 import { hideBin } from "yargs/helpers"
 import { RunCommand } from "./cli/cmd/run"
--- a/packages/opencode/src/otel-bridge.ts
+++ b/packages/opencode/src/otel-bridge.ts
@@ -0,0 +1,55 @@
+/**
+ * Registers a global OTel tracer provider so the AI SDK's
+ * `experimental_telemetry` spans are exported alongside Effect's own spans.
+ *
+ * Effect's Otlp.layerJson (in effect/oltp.ts) handles Effect-service tracing
+ * but does NOT register a global provider — the AI SDK only talks to the
+ * global one. This bridge fills the gap with a lightweight BasicTracerProvider.
+ *
+ * Import this module as the FIRST import in the entry point so the provider
+ * is registered before any AI SDK code runs.
+ */
+import { Flag } from "@/flag/flag"
+
+const endpoint = Flag.OTEL_EXPORTER_OTLP_ENDPOINT
+if (endpoint) {
+  const { trace } = await import("@opentelemetry/api")
+  const { BasicTracerProvider, BatchSpanProcessor } = await import("@opentelemetry/sdk-trace-base")
+  const { OTLPTraceExporter } = await import("@opentelemetry/exporter-trace-otlp-http")
+  const { resourceFromAttributes } = await import("@opentelemetry/resources")
+  const { ATTR_SERVICE_NAME, ATTR_SERVICE_VERSION } = await import("@opentelemetry/semantic-conventions")
+
+  const { CHANNEL, VERSION } = await import("@/installation/meta")
+
+  const provider = new BasicTracerProvider({
+    resource: resourceFromAttributes({
+      [ATTR_SERVICE_NAME]: "opencode",
+      [ATTR_SERVICE_VERSION]: VERSION,
+      "deployment.environment.name": CHANNEL === "local" ? "local" : CHANNEL,
+    }),
+    spanProcessors: [
+      new BatchSpanProcessor(
+        new OTLPTraceExporter({
+          url: `${endpoint.replace(/\/$/, "")}/v1/traces`,
+          headers: Flag.OTEL_EXPORTER_OTLP_HEADERS
+            ? Flag.OTEL_EXPORTER_OTLP_HEADERS.split(",").reduce(
+                (acc, x) => {
+                  const [key, ...rest] = x.split("=")
+                  acc[key] = rest.join("=")
+                  return acc
+                },
+                {} as Record<string, string>,
+              )
+            : undefined,
+        }),
+      ),
+    ],
+  })
+
+  trace.setGlobalTracerProvider(provider)
+
+  const shutdown = () => provider.shutdown().catch(() => {})
+  process.on("beforeExit", shutdown)
+  process.on("SIGINT", shutdown)
+  process.on("SIGTERM", shutdown)
+}
--- a/packages/opencode/src/session/llm.ts
+++ b/packages/opencode/src/session/llm.ts
@@ -385,7 +385,9 @@ export namespace LLM {
        ],
      }),
      experimental_telemetry: {
-        isEnabled: cfg.experimental?.openTelemetry,
+        isEnabled: cfg.experimental?.openTelemetry || !!Flag.OTEL_EXPORTER_OTLP_ENDPOINT,
+        recordInputs: true,
+        recordOutputs: true,
        metadata: {
          userId: cfg.username ?? "unknown",
          sessionId: input.sessionID,